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processing.opengl

Class PGraphicsOpenGL

    • Field Detail

      • pgl

        public PGL pgl
        Interface between Processing and OpenGL

      • currentPG

        public PGraphicsOpenGL currentPG
        The renderer currently in use.

      • initialized

        public boolean initialized
        Whether the PGraphics object is ready to render or not.

      • npotTexSupported

        public static boolean npotTexSupported
        Extensions used by Processing

      • autoMipmapGenSupported

        public static boolean autoMipmapGenSupported

      • fboMultisampleSupported

        public static boolean fboMultisampleSupported

      • packedDepthStencilSupported

        public static boolean packedDepthStencilSupported

      • anisoSamplingSupported

        public static boolean anisoSamplingSupported

      • blendEqSupported

        public static boolean blendEqSupported

      • readBufferSupported

        public static boolean readBufferSupported

      • drawBufferSupported

        public static boolean drawBufferSupported

      • maxTextureSize

        public static int maxTextureSize
        Some hardware limits

      • maxSamples

        public static int maxSamples

      • maxAnisoAmount

        public static float maxAnisoAmount

      • depthBits

        public static int depthBits

      • stencilBits

        public static int stencilBits

      • OPENGL_VENDOR

        public static java.lang.String OPENGL_VENDOR
        OpenGL information strings

      • OPENGL_RENDERER

        public static java.lang.String OPENGL_RENDERER

      • OPENGL_VERSION

        public static java.lang.String OPENGL_VERSION

      • OPENGL_EXTENSIONS

        public static java.lang.String OPENGL_EXTENSIONS

      • GLSL_VERSION

        public static java.lang.String GLSL_VERSION

      • cameraFOV

        public float cameraFOV
        Camera field of view.

      • cameraX

        public float cameraX
        Default position of the camera.

      • cameraY

        public float cameraY
        Default position of the camera.

      • cameraZ

        public float cameraZ
        Default position of the camera.

      • cameraNear

        public float cameraNear
        Distance of the near and far planes.

      • cameraFar

        public float cameraFar
        Distance of the near and far planes.

      • cameraAspect

        public float cameraAspect
        Aspect ratio of camera's view.

      • defCameraFOV

        public float defCameraFOV
        Default camera properties.

      • defCameraX

        public float defCameraX

      • defCameraY

        public float defCameraY

      • defCameraZ

        public float defCameraZ

      • defCameraNear

        public float defCameraNear

      • defCameraFar

        public float defCameraFar

      • defCameraAspect

        public float defCameraAspect

      • projmodelview

        public PMatrix3D projmodelview

      • lights

        public boolean lights

      • lightCount

        public int lightCount

      • lightType

        public int[] lightType
        Light types

      • lightPosition

        public float[] lightPosition
        Light positions

      • lightNormal

        public float[] lightNormal
        Light direction (normalized vector)

      • lightAmbient

        public float[] lightAmbient
        Ambient colors for lights.

      • lightDiffuse

        public float[] lightDiffuse
        Diffuse colors for lights.

      • lightSpecular

        public float[] lightSpecular
        Specular colors for lights. Internally these are stored as numbers between 0 and 1.

      • lightFalloffCoefficients

        public float[] lightFalloffCoefficients
        Light falloff

      • lightSpotParameters

        public float[] lightSpotParameters
        Light spot parameters: Cosine of light spot angle and concentration

      • currentLightSpecular

        public float[] currentLightSpecular
        Current specular color for lighting

      • currentLightFalloffConstant

        public float currentLightFalloffConstant
        Current light falloff

      • currentLightFalloffLinear

        public float currentLightFalloffLinear

      • currentLightFalloffQuadratic

        public float currentLightFalloffQuadratic

    • Constructor Detail

      • PGraphicsOpenGL

        public PGraphicsOpenGL()

    • Method Detail

      • setPrimary

        public void setPrimary(boolean primary)
        Description copied from class: PGraphics
        Set (or unset) this as the main drawing surface. Meaning that it can safely be set to opaque (and given a default gray background), or anything else that goes along with that.
        Overrides:
        setPrimary in class PGraphics

      • setSize

        public void setSize(int iwidth,
 int iheight)
        Description copied from class: PGraphics
        The final step in setting up a renderer, set its size of this renderer. This was formerly handled by the constructor, but instead it's been broken out so that setParent/setPrimary/setPath can be handled differently. Important: this is ignored by the Methods task because otherwise it will override setSize() in PApplet/Applet/Component, which will 1) not call super.setSize(), and 2) will cause the renderer to be resized from the event thread (EDT), causing a nasty crash as it collides with the animation thread.
        Overrides:
        setSize in class PGraphics

      • dispose

        public void dispose()
        Description copied from class: PGraphics
        Handle any takedown for this graphics context.

        This is called when a sketch is shut down and this renderer was specified using the size() command, or inside endRecord() and endRaw(), in order to shut things off.

        Overrides:
        dispose in class PGraphics

      • saveImpl

        public boolean saveImpl(java.lang.String filename)

      • setCache

        public void setCache(PImage image,
 java.lang.Object storage)
        Description copied from class: PGraphics
        Store data of some kind for the renderer that requires extra metadata of some kind. Usually this is a renderer-specific representation of the image data, for instance a BufferedImage with tint() settings applied for PGraphicsJava2D, or resized image data and OpenGL texture indices for PGraphicsOpenGL.
        Overrides:
        setCache in class PGraphics
        Parameters:
        image - The image to be stored
        storage - The metadata required by the renderer

      • getCache

        public java.lang.Object getCache(PImage image)
        Description copied from class: PGraphics
        Get cache storage data for the specified renderer. Because each renderer will cache data in different formats, it's necessary to store cache data keyed by the renderer object. Otherwise, attempting to draw the same image to both a PGraphicsJava2D and a PGraphicsOpenGL will cause errors.
        Overrides:
        getCache in class PGraphics
        Returns:
        metadata stored for the specified renderer

      • removeCache

        public void removeCache(PImage image)
        Description copied from class: PGraphics
        Remove information associated with this renderer from the cache, if any.
        Overrides:
        removeCache in class PGraphics
        Parameters:
        image - The image whose cache data should be removed

      • beginDraw

        public void beginDraw()
        Description copied from class: PGraphics
        ( begin auto-generated from PGraphics_beginDraw.xml ) Sets the default properties for a PGraphics object. It should be called before anything is drawn into the object. ( end auto-generated )

        Advanced

        When creating your own PGraphics, you should call this before drawing anything.
        Overrides:
        beginDraw in class PGraphics

      • endDraw

        public void endDraw()
        Description copied from class: PGraphics
        ( begin auto-generated from PGraphics_endDraw.xml ) Finalizes the rendering of a PGraphics object so that it can be shown on screen. ( end auto-generated )

        Advanced

        When creating your own PGraphics, you should call this when you're finished drawing.

        Overrides:
        endDraw in class PGraphics

      • updateProjmodelview

        public void updateProjmodelview()

      • hint

        public void hint(int which)
        Description copied from class: PGraphics
        ( begin auto-generated from hint.xml ) Set various hints and hacks for the renderer. This is used to handle obscure rendering features that cannot be implemented in a consistent manner across renderers. Many options will often graduate to standard features instead of hints over time.

        hint(ENABLE_OPENGL_4X_SMOOTH) - Enable 4x anti-aliasing for P3D. This can help force anti-aliasing if it has not been enabled by the user. On some graphics cards, this can also be set by the graphics driver's control panel, however not all cards make this available. This hint must be called immediately after the size() command because it resets the renderer, obliterating any settings and anything drawn (and like size(), re-running the code that came before it again).

        hint(DISABLE_OPENGL_2X_SMOOTH) - In Processing 1.0, Processing always enables 2x smoothing when the P3D renderer is used. This hint disables the default 2x smoothing and returns the smoothing behavior found in earlier releases, where smooth() and noSmooth() could be used to enable and disable smoothing, though the quality was inferior.

        hint(ENABLE_NATIVE_FONTS) - Use the native version fonts when they are installed, rather than the bitmapped version from a .vlw file. This is useful with the default (or JAVA2D) renderer setting, as it will improve font rendering speed. This is not enabled by default, because it can be misleading while testing because the type will look great on your machine (because you have the font installed) but lousy on others' machines if the identical font is unavailable. This option can only be set per-sketch, and must be called before any use of textFont().

        hint(DISABLE_DEPTH_TEST) - Disable the zbuffer, allowing you to draw on top of everything at will. When depth testing is disabled, items will be drawn to the screen sequentially, like a painting. This hint is most often used to draw in 3D, then draw in 2D on top of it (for instance, to draw GUI controls in 2D on top of a 3D interface). Starting in release 0149, this will also clear the depth buffer. Restore the default with hint(ENABLE_DEPTH_TEST), but note that with the depth buffer cleared, any 3D drawing that happens later in draw() will ignore existing shapes on the screen.

        hint(ENABLE_DEPTH_SORT) - Enable primitive z-sorting of triangles and lines in P3D and OPENGL. This can slow performance considerably, and the algorithm is not yet perfect. Restore the default with hint(DISABLE_DEPTH_SORT).

        hint(DISABLE_OPENGL_ERROR_REPORT) - Speeds up the P3D renderer setting by not checking for errors while running. Undo with hint(ENABLE_OPENGL_ERROR_REPORT).

        hint(ENABLE_BUFFER_READING) - Depth and stencil buffers in P2D/P3D will be downsampled to make PGL#readPixels work with multisampling. Enabling this introduces some overhead, so if you experience bad performance, disable multisampling with noSmooth() instead. This hint is not intended to be enabled and disabled repeatedely, so call this once in setup() or after creating your PGraphics2D/3D. You can restore the default with hint(DISABLE_BUFFER_READING) if you don't plan to read depth from this PGraphics anymore.

        hint(ENABLE_KEY_REPEAT) - Auto-repeating key events are discarded by default (works only in P2D/P3D); use this hint to get all the key events (including auto-repeated). Call hint(DISABLE_KEY_REPEAT) to get events only when the key goes physically up or down.

        hint(DISABLE_ASYNC_SAVEFRAME) - P2D/P3D only - save() and saveFrame() will not use separate threads for saving and will block until the image is written to the drive. This was the default behavior in 3.0b7 and before. To enable, call hint(ENABLE_ASYNC_SAVEFRAME).

        As of release 0149, unhint() has been removed in favor of adding additional ENABLE/DISABLE constants to reset the default behavior. This prevents the double negatives, and also reinforces which hints can be enabled or disabled. ( end auto-generated )
        Overrides:
        hint in class PGraphics
        Parameters:
        which - name of the hint to be enabled or disabled
        See Also:
        PGraphics, PApplet.createGraphics(int, int, String, String), PApplet.size(int, int)

      • beginShape

        public void beginShape(int kind)
        Description copied from class: PGraphics
        ( begin auto-generated from beginShape.xml ) Using the beginShape() and endShape() functions allow creating more complex forms. beginShape() begins recording vertices for a shape and endShape() stops recording. The value of the MODE parameter tells it which types of shapes to create from the provided vertices. With no mode specified, the shape can be any irregular polygon. The parameters available for beginShape() are POINTS, LINES, TRIANGLES, TRIANGLE_FAN, TRIANGLE_STRIP, QUADS, and QUAD_STRIP. After calling the beginShape() function, a series of vertex() commands must follow. To stop drawing the shape, call endShape(). The vertex() function with two parameters specifies a position in 2D and the vertex() function with three parameters specifies a position in 3D. Each shape will be outlined with the current stroke color and filled with the fill color.

        Transformations such as translate(), rotate(), and scale() do not work within beginShape(). It is also not possible to use other shapes, such as ellipse() or rect() within beginShape().

        The P3D renderer settings allow stroke() and fill() settings to be altered per-vertex, however the default P2D renderer does not. Settings such as strokeWeight(), strokeCap(), and strokeJoin() cannot be changed while inside a beginShape()/endShape() block with any renderer. ( end auto-generated )
        Overrides:
        beginShape in class PGraphics
        Parameters:
        kind - Either POINTS, LINES, TRIANGLES, TRIANGLE_FAN, TRIANGLE_STRIP, QUADS, or QUAD_STRIP
        See Also:
        PShape, PGraphics.endShape(), PGraphics.vertex(float, float, float, float, float), PGraphics.curveVertex(float, float, float), PGraphics.bezierVertex(float, float, float, float, float, float, float, float, float)

      • endShape

        public void endShape(int mode)
        Description copied from class: PGraphics
        ( begin auto-generated from endShape.xml ) The endShape() function is the companion to beginShape() and may only be called after beginShape(). When endshape() is called, all of image data defined since the previous call to beginShape() is written into the image buffer. The constant CLOSE as the value for the MODE parameter to close the shape (to connect the beginning and the end). ( end auto-generated )
        Overrides:
        endShape in class PGraphics
        Parameters:
        mode - use CLOSE to close the shape
        See Also:
        PShape, PGraphics.beginShape(int)

      • textureSampling

        public void textureSampling(int sampling)

      • vertex

        public void vertex(float x,
 float y)
        Overrides:
        vertex in class PGraphics

      • vertex

        public void vertex(float x,
 float y,
 float u,
 float v)
        Overrides:
        vertex in class PGraphics

      • vertex

        public void vertex(float x,
 float y,
 float z)
        Overrides:
        vertex in class PGraphics

      • attribPosition

        public void attribPosition(java.lang.String name,
 float x,
 float y,
 float z)
        Overrides:
        attribPosition in class PGraphics

      • attribNormal

        public void attribNormal(java.lang.String name,
 float nx,
 float ny,
 float nz)
        Overrides:
        attribNormal in class PGraphics

      • attribColor

        public void attribColor(java.lang.String name,
 int color)
        Overrides:
        attribColor in class PGraphics

      • attrib

        public void attrib(java.lang.String name,
 float... values)
        Overrides:
        attrib in class PGraphics

      • attrib

        public void attrib(java.lang.String name,
 int... values)
        Overrides:
        attrib in class PGraphics

      • attrib

        public void attrib(java.lang.String name,
 boolean... values)
        Overrides:
        attrib in class PGraphics

      • noClip

        public void noClip()
        Description copied from class: PGraphics
        ( begin auto-generated from noClip.xml ) Disables the clipping previously started by the clip() function. ( end auto-generated )
        Overrides:
        noClip in class PGraphics

      • bezierVertex

        public void bezierVertex(float x2,
 float y2,
 float x3,
 float y3,
 float x4,
 float y4)
        Overrides:
        bezierVertex in class PGraphics

      • bezierVertex

        public void bezierVertex(float x2,
 float y2,
 float z2,
 float x3,
 float y3,
 float z3,
 float x4,
 float y4,
 float z4)
        Description copied from class: PGraphics
        ( begin auto-generated from bezierVertex.xml ) Specifies vertex coordinates for Bezier curves. Each call to bezierVertex() defines the position of two control points and one anchor point of a Bezier curve, adding a new segment to a line or shape. The first time bezierVertex() is used within a beginShape() call, it must be prefaced with a call to vertex() to set the first anchor point. This function must be used between beginShape() and endShape() and only when there is no MODE parameter specified to beginShape(). Using the 3D version requires rendering with P3D (see the Environment reference for more information). ( end auto-generated )
        Overrides:
        bezierVertex in class PGraphics
        Parameters:
        x2 - the x-coordinate of the 1st control point
        y2 - the y-coordinate of the 1st control point
        z2 - the z-coordinate of the 1st control point
        x3 - the x-coordinate of the 2nd control point
        y3 - the y-coordinate of the 2nd control point
        z3 - the z-coordinate of the 2nd control point
        x4 - the x-coordinate of the anchor point
        y4 - the y-coordinate of the anchor point
        z4 - the z-coordinate of the anchor point
        See Also:
        PGraphics.curveVertex(float, float, float), PGraphics.vertex(float, float, float, float, float), PGraphics.quadraticVertex(float, float, float, float, float, float), PGraphics.bezier(float, float, float, float, float, float, float, float, float, float, float, float)

      • quadraticVertex

        public void quadraticVertex(float cx,
 float cy,
 float cz,
 float x3,
 float y3,
 float z3)
        Overrides:
        quadraticVertex in class PGraphics
        cz - the z-coordinate of the control point
        z3 - the z-coordinate of the anchor point

      • curveVertex

        public void curveVertex(float x,
 float y,
 float z)
        Overrides:
        curveVertex in class PGraphics
        z - the z-coordinate of the vertex

      • point

        public void point(float x,
 float y)
        Description copied from class: PGraphics
        ( begin auto-generated from point.xml ) Draws a point, a coordinate in space at the dimension of one pixel. The first parameter is the horizontal value for the point, the second value is the vertical value for the point, and the optional third value is the depth value. Drawing this shape in 3D with the z parameter requires the P3D parameter in combination with size() as shown in the above example. ( end auto-generated )
        Overrides:
        point in class PGraphics
        Parameters:
        x - x-coordinate of the point
        y - y-coordinate of the point
        See Also:
        PGraphics.stroke(int)

      • point

        public void point(float x,
 float y,
 float z)
        Overrides:
        point in class PGraphics
        z - z-coordinate of the point

      • line

        public void line(float x1,
 float y1,
 float x2,
 float y2)
        Description copied from class: PGraphics
        ( begin auto-generated from line.xml ) Draws a line (a direct path between two points) to the screen. The version of line() with four parameters draws the line in 2D. To color a line, use the stroke() function. A line cannot be filled, therefore the fill() function will not affect the color of a line. 2D lines are drawn with a width of one pixel by default, but this can be changed with the strokeWeight() function. The version with six parameters allows the line to be placed anywhere within XYZ space. Drawing this shape in 3D with the z parameter requires the P3D parameter in combination with size() as shown in the above example. ( end auto-generated )
        Overrides:
        line in class PGraphics
        Parameters:
        x1 - x-coordinate of the first point
        y1 - y-coordinate of the first point
        x2 - x-coordinate of the second point
        y2 - y-coordinate of the second point
        See Also:
        PGraphics.strokeWeight(float), PGraphics.strokeJoin(int), PGraphics.strokeCap(int), PGraphics.beginShape()

      • line

        public void line(float x1,
 float y1,
 float z1,
 float x2,
 float y2,
 float z2)
        Overrides:
        line in class PGraphics
        z1 - z-coordinate of the first point
        z2 - z-coordinate of the second point

      • triangle

        public void triangle(float x1,
 float y1,
 float x2,
 float y2,
 float x3,
 float y3)
        Description copied from class: PGraphics
        ( begin auto-generated from triangle.xml ) A triangle is a plane created by connecting three points. The first two arguments specify the first point, the middle two arguments specify the second point, and the last two arguments specify the third point. ( end auto-generated )
        Overrides:
        triangle in class PGraphics
        Parameters:
        x1 - x-coordinate of the first point
        y1 - y-coordinate of the first point
        x2 - x-coordinate of the second point
        y2 - y-coordinate of the second point
        x3 - x-coordinate of the third point
        y3 - y-coordinate of the third point
        See Also:
        PApplet.beginShape()

      • quad

        public void quad(float x1,
 float y1,
 float x2,
 float y2,
 float x3,
 float y3,
 float x4,
 float y4)
        Description copied from class: PGraphics
        ( begin auto-generated from quad.xml ) A quad is a quadrilateral, a four sided polygon. It is similar to a rectangle, but the angles between its edges are not constrained to ninety degrees. The first pair of parameters (x1,y1) sets the first vertex and the subsequent pairs should proceed clockwise or counter-clockwise around the defined shape. ( end auto-generated )
        Overrides:
        quad in class PGraphics
        Parameters:
        x1 - x-coordinate of the first corner
        y1 - y-coordinate of the first corner
        x2 - x-coordinate of the second corner
        y2 - y-coordinate of the second corner
        x3 - x-coordinate of the third corner
        y3 - y-coordinate of the third corner
        x4 - x-coordinate of the fourth corner
        y4 - y-coordinate of the fourth corner

      • ellipseImpl

        public void ellipseImpl(float a,
 float b,
 float c,
 float d)

      • box

        public void box(float w,
 float h,
 float d)
        Overrides:
        box in class PGraphics
        Parameters:
        w - dimension of the box in the x-dimension
        h - dimension of the box in the y-dimension
        d - dimension of the box in the z-dimension

      • sphere

        public void sphere(float r)
        Description copied from class: PGraphics
        ( begin auto-generated from sphere.xml ) A sphere is a hollow ball made from tessellated triangles. ( end auto-generated )

        Advanced

        Implementation notes:

        cache all the points of the sphere in a static array top and bottom are just a bunch of triangles that land in the center point

        sphere is a series of concentric circles who radii vary along the shape, based on, er.. cos or something 

         [toxi 031031] new sphere code. removed all multiplies with
 radius, as scale() will take care of that anyway
 [toxi 031223] updated sphere code (removed modulos)
 and introduced sphereAt(x,y,z,r)
 to avoid additional translate()'s on the user/sketch side
 [davbol 080801] now using separate sphereDetailU/V
        Overrides:
        sphere in class PGraphics
        Parameters:
        r - the radius of the sphere
        See Also:
        PGraphics.sphereDetail(int)

      • textAscent

        public float textAscent()
        Description copied from class: PGraphics
        ( begin auto-generated from textAscent.xml ) Returns ascent of the current font at its current size. This information is useful for determining the height of the font above the baseline. For example, adding the textAscent() and textDescent() values will give you the total height of the line. ( end auto-generated )
        Overrides:
        textAscent in class PGraphics
        See Also:
        PGraphics.textDescent()

      • textDescent

        public float textDescent()
        Description copied from class: PGraphics
        ( begin auto-generated from textDescent.xml ) Returns descent of the current font at its current size. This information is useful for determining the height of the font below the baseline. For example, adding the textAscent() and textDescent() values will give you the total height of the line. ( end auto-generated )
        Overrides:
        textDescent in class PGraphics
        See Also:
        PGraphics.textAscent()

      • popMatrix

        public void popMatrix()
        Description copied from class: PGraphics
        ( begin auto-generated from popMatrix.xml ) Pops the current transformation matrix off the matrix stack. Understanding pushing and popping requires understanding the concept of a matrix stack. The pushMatrix() function saves the current coordinate system to the stack and popMatrix() restores the prior coordinate system. pushMatrix() and popMatrix() are used in conjuction with the other transformation functions and may be embedded to control the scope of the transformations. ( end auto-generated )
        Overrides:
        popMatrix in class PGraphics
        See Also:
        PGraphics.pushMatrix()

      • translate

        public void translate(float tx,
 float ty)
        Description copied from class: PGraphics
        ( begin auto-generated from translate.xml ) Specifies an amount to displace objects within the display window. The x parameter specifies left/right translation, the y parameter specifies up/down translation, and the z parameter specifies translations toward/away from the screen. Using this function with the z parameter requires using P3D as a parameter in combination with size as shown in the above example. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling translate(50, 0) and then translate(20, 0) is the same as translate(70, 0). If translate() is called within draw(), the transformation is reset when the loop begins again. This function can be further controlled by the pushMatrix() and popMatrix(). ( end auto-generated )
        Overrides:
        translate in class PGraphics
        Parameters:
        tx - left/right translation
        ty - up/down translation
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.rotate(float), PGraphics.rotateX(float), PGraphics.rotateY(float), PGraphics.rotateZ(float), PGraphics.scale(float, float, float)

      • translate

        public void translate(float tx,
 float ty,
 float tz)
        Overrides:
        translate in class PGraphics
        tz - forward/backward translation

      • rotateX

        public void rotateX(float angle)
        Description copied from class: PGraphics
        ( begin auto-generated from rotateX.xml ) Rotates a shape around the x-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to PI*2) or converted to radians with the radians() function. Objects are always rotated around their relative position to the origin and positive numbers rotate objects in a counterclockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling rotateX(PI/2) and then rotateX(PI/2) is the same as rotateX(PI). If rotateX() is called within the draw(), the transformation is reset when the loop begins again. This function requires using P3D as a third parameter to size() as shown in the example above. ( end auto-generated )
        Overrides:
        rotateX in class PGraphics
        Parameters:
        angle - angle of rotation specified in radians
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.rotate(float), PGraphics.rotateY(float), PGraphics.rotateZ(float), PGraphics.scale(float, float, float), PGraphics.translate(float, float, float)

      • rotateY

        public void rotateY(float angle)
        Description copied from class: PGraphics
        ( begin auto-generated from rotateY.xml ) Rotates a shape around the y-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to PI*2) or converted to radians with the radians() function. Objects are always rotated around their relative position to the origin and positive numbers rotate objects in a counterclockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling rotateY(PI/2) and then rotateY(PI/2) is the same as rotateY(PI). If rotateY() is called within the draw(), the transformation is reset when the loop begins again. This function requires using P3D as a third parameter to size() as shown in the examples above. ( end auto-generated )
        Overrides:
        rotateY in class PGraphics
        Parameters:
        angle - angle of rotation specified in radians
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.rotate(float), PGraphics.rotateX(float), PGraphics.rotateZ(float), PGraphics.scale(float, float, float), PGraphics.translate(float, float, float)

      • rotateZ

        public void rotateZ(float angle)
        Description copied from class: PGraphics
        ( begin auto-generated from rotateZ.xml ) Rotates a shape around the z-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to PI*2) or converted to radians with the radians() function. Objects are always rotated around their relative position to the origin and positive numbers rotate objects in a counterclockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling rotateZ(PI/2) and then rotateZ(PI/2) is the same as rotateZ(PI). If rotateZ() is called within the draw(), the transformation is reset when the loop begins again. This function requires using P3D as a third parameter to size() as shown in the examples above. ( end auto-generated )
        Overrides:
        rotateZ in class PGraphics
        Parameters:
        angle - angle of rotation specified in radians
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.rotate(float), PGraphics.rotateX(float), PGraphics.rotateY(float), PGraphics.scale(float, float, float), PGraphics.translate(float, float, float)

      • rotate

        public void rotate(float angle,
 float v0,
 float v1,
 float v2)
        Rotate around an arbitrary vector, similar to glRotate(), except that it takes radians (instead of degrees).
        Overrides:
        rotate in class PGraphics

      • scale

        public void scale(float sx,
 float sy)
        Same as scale(sx, sy, 1).
        Overrides:
        scale in class PGraphics
        Parameters:
        sx - percentage to scale the object in the x-axis
        sy - percentage to scale the object in the y-axis

      • scale

        public void scale(float sx,
 float sy,
 float sz)
        Scale in three dimensions.
        Overrides:
        scale in class PGraphics
        sz - percentage to scale the object in the z-axis

      • shearX

        public void shearX(float angle)
        Description copied from class: PGraphics
        ( begin auto-generated from shearX.xml ) Shears a shape around the x-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to PI*2) or converted to radians with the radians() function. Objects are always sheared around their relative position to the origin and positive numbers shear objects in a clockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling shearX(PI/2) and then shearX(PI/2) is the same as shearX(PI). If shearX() is called within the draw(), the transformation is reset when the loop begins again.

        Technically, shearX() multiplies the current transformation matrix by a rotation matrix. This function can be further controlled by the pushMatrix() and popMatrix() functions. ( end auto-generated )
        Overrides:
        shearX in class PGraphics
        Parameters:
        angle - angle of shear specified in radians
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.shearY(float), PGraphics.scale(float, float, float), PGraphics.translate(float, float, float), PApplet.radians(float)

      • shearY

        public void shearY(float angle)
        Description copied from class: PGraphics
        ( begin auto-generated from shearY.xml ) Shears a shape around the y-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to PI*2) or converted to radians with the radians() function. Objects are always sheared around their relative position to the origin and positive numbers shear objects in a clockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect. For example, calling shearY(PI/2) and then shearY(PI/2) is the same as shearY(PI). If shearY() is called within the draw(), the transformation is reset when the loop begins again.

        Technically, shearY() multiplies the current transformation matrix by a rotation matrix. This function can be further controlled by the pushMatrix() and popMatrix() functions. ( end auto-generated )
        Overrides:
        shearY in class PGraphics
        Parameters:
        angle - angle of shear specified in radians
        See Also:
        PGraphics.popMatrix(), PGraphics.pushMatrix(), PGraphics.shearX(float), PGraphics.scale(float, float, float), PGraphics.translate(float, float, float), PApplet.radians(float)

      • applyMatrix

        public void applyMatrix(float n00,
 float n01,
 float n02,
 float n10,
 float n11,
 float n12)
        Overrides:
        applyMatrix in class PGraphics
        Parameters:
        n00 - numbers which define the 4x4 matrix to be multiplied
        n01 - numbers which define the 4x4 matrix to be multiplied
        n02 - numbers which define the 4x4 matrix to be multiplied
        n10 - numbers which define the 4x4 matrix to be multiplied
        n11 - numbers which define the 4x4 matrix to be multiplied
        n12 - numbers which define the 4x4 matrix to be multiplied

      • applyMatrix

        public void applyMatrix(float n00,
 float n01,
 float n02,
 float n03,
 float n10,
 float n11,
 float n12,
 float n13,
 float n20,
 float n21,
 float n22,
 float n23,
 float n30,
 float n31,
 float n32,
 float n33)
        Apply a 4x4 transformation matrix to the modelview stack.
        Overrides:
        applyMatrix in class PGraphics
        n03 - numbers which define the 4x4 matrix to be multiplied
        n13 - numbers which define the 4x4 matrix to be multiplied
        n20 - numbers which define the 4x4 matrix to be multiplied
        n21 - numbers which define the 4x4 matrix to be multiplied
        n22 - numbers which define the 4x4 matrix to be multiplied
        n23 - numbers which define the 4x4 matrix to be multiplied
        n30 - numbers which define the 4x4 matrix to be multiplied
        n31 - numbers which define the 4x4 matrix to be multiplied
        n32 - numbers which define the 4x4 matrix to be multiplied
        n33 - numbers which define the 4x4 matrix to be multiplied

      • getMatrix

        public PMatrix3D getMatrix(PMatrix3D target)
        Description copied from class: PGraphics
        Copy the current transformation matrix into the specified target. Pass in null to create a new matrix.
        Overrides:
        getMatrix in class PGraphics

      • setMatrix

        public void setMatrix(PMatrix2D source)
        Description copied from class: PGraphics
        Set the current transformation to the contents of the specified source.
        Overrides:
        setMatrix in class PGraphics

      • setMatrix

        public void setMatrix(PMatrix3D source)
        Set the current transformation to the contents of the specified source.
        Overrides:
        setMatrix in class PGraphics

      • pushProjection

        public void pushProjection()

      • popProjection

        public void popProjection()

      • resetProjection

        public void resetProjection()

      • applyProjection

        public void applyProjection(PMatrix3D mat)

      • applyProjection

        public void applyProjection(float n00,
 float n01,
 float n02,
 float n03,
 float n10,
 float n11,
 float n12,
 float n13,
 float n20,
 float n21,
 float n22,
 float n23,
 float n30,
 float n31,
 float n32,
 float n33)

      • setProjection

        public void setProjection(PMatrix3D mat)

      • beginCamera

        public void beginCamera()
        Set matrix mode to the camera matrix (instead of the current transformation matrix). This means applyMatrix, resetMatrix, etc. will affect the camera.

        Note that the camera matrix is *not* the perspective matrix, it contains the values of the modelview matrix immediatly after the latter was initialized with ortho() or camera(), or the modelview matrix as result of the operations applied between beginCamera()/endCamera().

        beginCamera() specifies that all coordinate transforms until endCamera() should be pre-applied in inverse to the camera transform matrix. Note that this is only challenging when a user specifies an arbitrary matrix with applyMatrix(). Then that matrix will need to be inverted, which may not be possible. But take heart, if a user is applying a non-invertible matrix to the camera transform, then he is clearly up to no good, and we can wash our hands of those bad intentions.

        begin/endCamera clauses do not automatically reset the camera transform matrix. That's because we set up a nice default camera transform in setup(), and we expect it to hold through draw(). So we don't reset the camera transform matrix at the top of draw(). That means that an innocuous-looking clause like 

         beginCamera();
 translate(0, 0, 10);
 endCamera();
        at the top of draw(), will result in a runaway camera that shoots infinitely out of the screen over time. In order to prevent this, it is necessary to call some function that does a hard reset of the camera transform matrix inside of begin/endCamera. Two options are 
         camera(); // sets up the nice default camera transform
 resetMatrix(); // sets up the identity camera transform
        So to rotate a camera a constant amount, you might try 
         beginCamera();
 camera();
 rotateY(PI / 8);
 endCamera();
        Overrides:
        beginCamera in class PGraphics
        See Also:
        PGraphics.camera(), PGraphics.endCamera(), PGraphics.applyMatrix(PMatrix), PGraphics.resetMatrix(), PGraphics.translate(float, float, float), PGraphics.scale(float, float, float)

      • camera

        public void camera()
        Set camera to the default settings.

        Processing camera behavior:

        Camera behavior can be split into two separate components, camera transformation, and projection. The transformation corresponds to the physical location, orientation, and scale of the camera. In a physical camera metaphor, this is what can manipulated by handling the camera body (with the exception of scale, which doesn't really have a physcial analog). The projection corresponds to what can be changed by manipulating the lens.

        We maintain separate matrices to represent the camera transform and projection. An important distinction between the two is that the camera transform should be invertible, where the projection matrix should not, since it serves to map three dimensions to two. It is possible to bake the two matrices into a single one just by multiplying them together, but it isn't a good idea, since lighting, z-ordering, and z-buffering all demand a true camera z coordinate after modelview and camera transforms have been applied but before projection. If the camera transform and projection are combined there is no way to recover a good camera-space z-coordinate from a model coordinate.

        Fortunately, there are no functions that manipulate both camera transformation and projection.

        camera() sets the camera position, orientation, and center of the scene. It replaces the camera transform with a new one.

        The transformation functions are the same ones used to manipulate the modelview matrix (scale, translate, rotate, etc.). But they are bracketed with beginCamera(), endCamera() to indicate that they should apply (in inverse), to the camera transformation matrix.

        Overrides:
        camera in class PGraphics
        See Also:
        PGraphics.beginCamera(), PGraphics.endCamera(), PGraphics.frustum(float, float, float, float, float, float)

      • camera

        public void camera(float eyeX,
 float eyeY,
 float eyeZ,
 float centerX,
 float centerY,
 float centerZ,
 float upX,
 float upY,
 float upZ)
        More flexible method for dealing with camera().

        The actual call is like gluLookat. Here's the real skinny on what does what: 

         camera(); or
 camera(ex, ey, ez, cx, cy, cz, ux, uy, uz);
        do not need to be called from with beginCamera();/endCamera(); That's because they always apply to the camera transformation, and they always totally replace it. That means that any coordinate transforms done before camera(); in draw() will be wiped out. It also means that camera() always operates in untransformed world coordinates. Therefore it is always redundant to call resetMatrix(); before camera(); This isn't technically true of gluLookat, but it's pretty much how it's used.

        Now, beginCamera(); and endCamera(); are useful if you want to move the camera around using transforms like translate(), etc. They will wipe out any coordinate system transforms that occur before them in draw(), but they will not automatically wipe out the camera transform. This means that they should be at the top of draw(). It also means that the following: 

         beginCamera();
 rotateY(PI / 8);
 endCamera();
        will result in a camera that spins without stopping. If you want to just rotate a small constant amount, try this: 
         beginCamera();
 camera(); // sets up the default view
 rotateY(PI / 8);
 endCamera();
        That will rotate a little off of the default view. Note that this is entirely equivalent to 
         camera(); // sets up the default view
 beginCamera();
 rotateY(PI / 8);
 endCamera();
        because camera() doesn't care whether or not it's inside a begin/end clause. Basically it's safe to use camera() or camera(ex, ey, ez, cx, cy, cz, ux, uy, uz) as naked calls because they do all the matrix resetting automatically.
        Overrides:
        camera in class PGraphics
        Parameters:
        eyeX - x-coordinate for the eye
        eyeY - y-coordinate for the eye
        eyeZ - z-coordinate for the eye
        centerX - x-coordinate for the center of the scene
        centerY - y-coordinate for the center of the scene
        centerZ - z-coordinate for the center of the scene
        upX - usually 0.0, 1.0, or -1.0
        upY - usually 0.0, 1.0, or -1.0
        upZ - usually 0.0, 1.0, or -1.0

      • ortho

        public void ortho()
        Calls ortho() with the proper parameters for Processing's standard orthographic projection.
        Overrides:
        ortho in class PGraphics

      • ortho

        public void ortho(float left,
 float right,
 float bottom,
 float top)
        Calls ortho() with the specified size of the viewing volume along the X and Z directions.
        Overrides:
        ortho in class PGraphics
        Parameters:
        left - left plane of the clipping volume
        right - right plane of the clipping volume
        bottom - bottom plane of the clipping volume
        top - top plane of the clipping volume

      • ortho

        public void ortho(float left,
 float right,
 float bottom,
 float top,
 float near,
 float far)
        Sets an orthographic projection.
        Overrides:
        ortho in class PGraphics
        near - maximum distance from the origin to the viewer
        far - maximum distance from the origin away from the viewer

      • perspective

        public void perspective()
        Calls perspective() with Processing's standard coordinate projection.

        Projection functions:

        • frustrum()
        • ortho()
        • perspective()
        Each of these three functions completely replaces the projection matrix with a new one. They can be called inside setup(), and their effects will be felt inside draw(). At the top of draw(), the projection matrix is not reset. Therefore the last projection function to be called always dominates. On resize, the default projection is always established, which has perspective.

        This behavior is pretty much familiar from OpenGL, except where functions replace matrices, rather than multiplying against the previous.

        Overrides:
        perspective in class PGraphics

      • perspective

        public void perspective(float fov,
 float aspect,
 float zNear,
 float zFar)
        Similar to gluPerspective(). Implementation based on Mesa's glu.c
        Overrides:
        perspective in class PGraphics
        Parameters:
        fov - field-of-view angle (in radians) for vertical direction
        aspect - ratio of width to height
        zNear - z-position of nearest clipping plane
        zFar - z-position of farthest clipping plane

      • screenX

        public float screenX(float x,
 float y,
 float z)
        Overrides:
        screenX in class PGraphics
        z - 3D z-coordinate to be mapped

      • screenY

        public float screenY(float x,
 float y,
 float z)
        Overrides:
        screenY in class PGraphics
        z - 3D z-coordinate to be mapped

      • screenZ

        public float screenZ(float x,
 float y,
 float z)
        Description copied from class: PGraphics
        ( begin auto-generated from screenZ.xml ) Takes a three-dimensional X, Y, Z position and returns the Z value for where it will appear on a (two-dimensional) screen. ( end auto-generated )
        Overrides:
        screenZ in class PGraphics
        Parameters:
        x - 3D x-coordinate to be mapped
        y - 3D y-coordinate to be mapped
        z - 3D z-coordinate to be mapped
        See Also:
        PGraphics.screenX(float, float, float), PGraphics.screenY(float, float, float)

      • modelX

        public float modelX(float x,
 float y,
 float z)
        Description copied from class: PGraphics
        ( begin auto-generated from modelX.xml ) Returns the three-dimensional X, Y, Z position in model space. This returns the X value for a given coordinate based on the current set of transformations (scale, rotate, translate, etc.) The X value can be used to place an object in space relative to the location of the original point once the transformations are no longer in use.

        In the example, the modelX(), modelY(), and modelZ() functions record the location of a box in space after being placed using a series of translate and rotate commands. After popMatrix() is called, those transformations no longer apply, but the (x, y, z) coordinate returned by the model functions is used to place another box in the same location. ( end auto-generated )
        Overrides:
        modelX in class PGraphics
        Parameters:
        x - 3D x-coordinate to be mapped
        y - 3D y-coordinate to be mapped
        z - 3D z-coordinate to be mapped
        See Also:
        PGraphics.modelY(float, float, float), PGraphics.modelZ(float, float, float)

      • modelY

        public float modelY(float x,
 float y,
 float z)
        Description copied from class: PGraphics
        ( begin auto-generated from modelY.xml ) Returns the three-dimensional X, Y, Z position in model space. This returns the Y value for a given coordinate based on the current set of transformations (scale, rotate, translate, etc.) The Y value can be used to place an object in space relative to the location of the original point once the transformations are no longer in use.

        In the example, the modelX(), modelY(), and modelZ() functions record the location of a box in space after being placed using a series of translate and rotate commands. After popMatrix() is called, those transformations no longer apply, but the (x, y, z) coordinate returned by the model functions is used to place another box in the same location. ( end auto-generated )
        Overrides:
        modelY in class PGraphics
        Parameters:
        x - 3D x-coordinate to be mapped
        y - 3D y-coordinate to be mapped
        z - 3D z-coordinate to be mapped
        See Also:
        PGraphics.modelX(float, float, float), PGraphics.modelZ(float, float, float)

      • modelZ

        public float modelZ(float x,
 float y,
 float z)
        Description copied from class: PGraphics
        ( begin auto-generated from modelZ.xml ) Returns the three-dimensional X, Y, Z position in model space. This returns the Z value for a given coordinate based on the current set of transformations (scale, rotate, translate, etc.) The Z value can be used to place an object in space relative to the location of the original point once the transformations are no longer in use.

        In the example, the modelX(), modelY(), and modelZ() functions record the location of a box in space after being placed using a series of translate and rotate commands. After popMatrix() is called, those transformations no longer apply, but the (x, y, z) coordinate returned by the model functions is used to place another box in the same location. ( end auto-generated )
        Overrides:
        modelZ in class PGraphics
        Parameters:
        x - 3D x-coordinate to be mapped
        y - 3D y-coordinate to be mapped
        z - 3D z-coordinate to be mapped
        See Also:
        PGraphics.modelX(float, float, float), PGraphics.modelY(float, float, float)

      • popStyle

        public void popStyle()
        Description copied from class: PGraphics
        ( begin auto-generated from popStyle.xml ) The pushStyle() function saves the current style settings and popStyle() restores the prior settings; these functions are always used together. They allow you to change the style settings and later return to what you had. When a new style is started with pushStyle(), it builds on the current style information. The pushStyle() and popStyle() functions can be embedded to provide more control (see the second example above for a demonstration.) ( end auto-generated )
        Overrides:
        popStyle in class PGraphics
        See Also:
        PGraphics.pushStyle()

      • strokeWeight

        public void strokeWeight(float weight)
        Description copied from class: PGraphics
        ( begin auto-generated from strokeWeight.xml ) Sets the width of the stroke used for lines, points, and the border around shapes. All widths are set in units of pixels.

        When drawing with P3D, series of connected lines (such as the stroke around a polygon, triangle, or ellipse) produce unattractive results when a thick stroke weight is set (see Issue 123). With P3D, the minimum and maximum values for strokeWeight() are controlled by the graphics card and the operating system's OpenGL implementation. For instance, the thickness may not go higher than 10 pixels. ( end auto-generated )
        Overrides:
        strokeWeight in class PGraphics
        Parameters:
        weight - the weight (in pixels) of the stroke
        See Also:
        PGraphics.stroke(int, float), PGraphics.strokeJoin(int), PGraphics.strokeCap(int)

      • strokeJoin

        public void strokeJoin(int join)
        Description copied from class: PGraphics
        ( begin auto-generated from strokeJoin.xml ) Sets the style of the joints which connect line segments. These joints are either mitered, beveled, or rounded and specified with the corresponding parameters MITER, BEVEL, and ROUND. The default joint is MITER.

        This function is not available with the P3D renderer, (see Issue 123). More information about the renderers can be found in the size() reference. ( end auto-generated )
        Overrides:
        strokeJoin in class PGraphics
        Parameters:
        join - either MITER, BEVEL, ROUND
        See Also:
        PGraphics.stroke(int, float), PGraphics.strokeWeight(float), PGraphics.strokeCap(int)

      • lights

        public void lights()
        Sets up an ambient and directional light using OpenGL. API taken from PGraphics3D. 
         The Lighting Skinny:
 The way lighting works is complicated enough that it's worth
 producing a document to describe it. Lighting calculations proceed
 pretty much exactly as described in the OpenGL red book.
 Light-affecting material properties:
 AMBIENT COLOR
 - multiplies by light's ambient component
 - for believability this should match diffuse color
 DIFFUSE COLOR
 - multiplies by light's diffuse component
 SPECULAR COLOR
 - multiplies by light's specular component
 - usually less colored than diffuse/ambient
 SHININESS
 - the concentration of specular effect
 - this should be set pretty high (20-50) to see really
 noticeable specularity
 EMISSIVE COLOR
 - constant additive color effect
 Light types:
 AMBIENT
 - one color
 - no specular color
 - no direction
 - may have falloff (constant, linear, and quadratic)
 - may have position (which matters in non-constant falloff case)
 - multiplies by a material's ambient reflection
 DIRECTIONAL
 - has diffuse color
 - has specular color
 - has direction
 - no position
 - no falloff
 - multiplies by a material's diffuse and specular reflections
 POINT
 - has diffuse color
 - has specular color
 - has position
 - no direction
 - may have falloff (constant, linear, and quadratic)
 - multiplies by a material's diffuse and specular reflections
 SPOT
 - has diffuse color
 - has specular color
 - has position
 - has direction
 - has cone angle (set to half the total cone angle)
 - has concentration value
 - may have falloff (constant, linear, and quadratic)
 - multiplies by a material's diffuse and specular reflections
 Normal modes:
 All of the primitives (rect, box, sphere, etc.) have their normals
 set nicely. During beginShape/endShape normals can be set by the user.
 AUTO-NORMAL
 - if no normal is set during the shape, we are in auto-normal mode
 - auto-normal calculates one normal per triangle (face-normal mode)
 SHAPE-NORMAL
 - if one normal is set during the shape, it will be used for
 all vertices
 VERTEX-NORMAL
 - if multiple normals are set, each normal applies to
 subsequent vertices
 - (except for the first one, which applies to previous
 and subsequent vertices)
 Efficiency consequences:
 There is a major efficiency consequence of position-dependent
 lighting calculations per vertex. (See below for determining
 whether lighting is vertex position-dependent.) If there is no
 position dependency then the only factors that affect the lighting
 contribution per vertex are its colors and its normal.
 There is a major efficiency win if
 1) lighting is not position dependent
 2) we are in AUTO-NORMAL or SHAPE-NORMAL mode
 because then we can calculate one lighting contribution per shape
 (SHAPE-NORMAL) or per triangle (AUTO-NORMAL) and simply multiply it
 into the vertex colors. The converse is our worst-case performance when
 1) lighting is position dependent
 2) we are in AUTO-NORMAL mode
 because then we must calculate lighting per-face * per-vertex.
 Each vertex has a different lighting contribution per face in
 which it appears. Yuck.
 Determining vertex position dependency:
 If any of the following factors are TRUE then lighting is
 vertex position dependent:
 1) Any lights uses non-constant falloff
 2) There are any point or spot lights
 3) There is a light with specular color AND there is a
 material with specular color
 So worth noting is that default lighting (a no-falloff ambient
 and a directional without specularity) is not position-dependent.
 We should capitalize.
 Simon Greenwold, April 2005
        Overrides:
        lights in class PGraphics
        See Also:
        PGraphics.ambientLight(float, float, float, float, float, float), PGraphics.directionalLight(float, float, float, float, float, float), PGraphics.pointLight(float, float, float, float, float, float), PGraphics.spotLight(float, float, float, float, float, float, float, float, float, float, float), PGraphics.noLights()

      • ambientLight

        public void ambientLight(float r,
 float g,
 float b,
 float x,
 float y,
 float z)
        Add an ambient light based on the current color mode. This version includes an (x, y, z) position for situations where the falloff distance is used.
        Overrides:
        ambientLight in class PGraphics
        x - x-coordinate of the light
        y - y-coordinate of the light
        z - z-coordinate of the light

      • directionalLight

        public void directionalLight(float r,
 float g,
 float b,
 float dx,
 float dy,
 float dz)
        Description copied from class: PGraphics
        ( begin auto-generated from directionalLight.xml ) Adds a directional light. Directional light comes from one direction and is stronger when hitting a surface squarely and weaker if it hits at a a gentle angle. After hitting a surface, a directional lights scatters in all directions. Lights need to be included in the draw() to remain persistent in a looping program. Placing them in the setup() of a looping program will cause them to only have an effect the first time through the loop. The affect of the v1, v2, and v3 parameters is determined by the current color mode. The nx, ny, and nz parameters specify the direction the light is facing. For example, setting ny to -1 will cause the geometry to be lit from below (the light is facing directly upward). ( end auto-generated )
        Overrides:
        directionalLight in class PGraphics
        Parameters:
        r - red or hue value (depending on current color mode)
        g - green or saturation value (depending on current color mode)
        b - blue or brightness value (depending on current color mode)
        dx - direction along the x-axis
        dy - direction along the y-axis
        dz - direction along the z-axis
        See Also:
        PGraphics.lights(), PGraphics.ambientLight(float, float, float, float, float, float), PGraphics.pointLight(float, float, float, float, float, float), PGraphics.spotLight(float, float, float, float, float, float, float, float, float, float, float)

      • spotLight

        public void spotLight(float r,
 float g,
 float b,
 float x,
 float y,
 float z,
 float dx,
 float dy,
 float dz,
 float angle,
 float concentration)
        Description copied from class: PGraphics
        ( begin auto-generated from spotLight.xml ) Adds a spot light. Lights need to be included in the draw() to remain persistent in a looping program. Placing them in the setup() of a looping program will cause them to only have an effect the first time through the loop. The affect of the v1, v2, and v3 parameters is determined by the current color mode. The x, y, and z parameters specify the position of the light and nx, ny, nz specify the direction or light. The angle parameter affects angle of the spotlight cone. ( end auto-generated )
        Overrides:
        spotLight in class PGraphics
        Parameters:
        r - red or hue value (depending on current color mode)
        g - green or saturation value (depending on current color mode)
        b - blue or brightness value (depending on current color mode)
        x - x-coordinate of the light
        y - y-coordinate of the light
        z - z-coordinate of the light
        dx - direction along the x axis
        dy - direction along the y axis
        dz - direction along the z axis
        angle - angle of the spotlight cone
        concentration - exponent determining the center bias of the cone
        See Also:
        PGraphics.lights(), PGraphics.directionalLight(float, float, float, float, float, float), PGraphics.pointLight(float, float, float, float, float, float), PGraphics.ambientLight(float, float, float, float, float, float)

      • isGL

        public boolean isGL()
        Description copied from class: PGraphics
        Return true if this renderer does rendering through OpenGL. Defaults to false.
        Overrides:
        isGL in class PGraphics

      • loadPixels

        public void loadPixels()
        Description copied from class: PImage
        ( begin auto-generated from PImage_loadPixels.xml ) Loads the pixel data for the image into its pixels[] array. This function must always be called before reading from or writing to pixels[].

        renderers may or may not seem to require loadPixels() or updatePixels(). However, the rule is that any time you want to manipulate the pixels[] array, you must first call loadPixels(), and after changes have been made, call updatePixels(). Even if the renderer may not seem to use this function in the current Processing release, this will always be subject to change. ( end auto-generated )

        Advanced

        Call this when you want to mess with the pixels[] array.

        For subclasses where the pixels[] buffer isn't set by default, this should copy all data into the pixels[] array

        Overrides:
        loadPixels in class PImage

      • get

        public int get(int x,
 int y)
        Description copied from class: PImage
        ( begin auto-generated from PImage_get.xml ) Reads the color of any pixel or grabs a section of an image. If no parameters are specified, the entire image is returned. Use the x and y parameters to get the value of one pixel. Get a section of the display window by specifying an additional width and height parameter. When getting an image, the x and y parameters define the coordinates for the upper-left corner of the image, regardless of the current imageMode().

        If the pixel requested is outside of the image window, black is returned. The numbers returned are scaled according to the current color ranges, but only RGB values are returned by this function. For example, even though you may have drawn a shape with colorMode(HSB), the numbers returned will be in RGB format.

        Getting the color of a single pixel with get(x, y) is easy, but not as fast as grabbing the data directly from pixels[]. The equivalent statement to get(x, y) using pixels[] is pixels[y*width+x]. See the reference for pixels[] for more information. ( end auto-generated )

        Advanced

        Returns an ARGB "color" type (a packed 32 bit int with the color. If the coordinate is outside the image, zero is returned (black, but completely transparent).

        If the image is in RGB format (i.e. on a PVideo object), the value will get its high bits set, just to avoid cases where they haven't been set already.

        If the image is in ALPHA format, this returns a white with its alpha value set.

        This function is included primarily for beginners. It is quite slow because it has to check to see if the x, y that was provided is inside the bounds, and then has to check to see what image type it is. If you want things to be more efficient, access the pixels[] array directly.

        Overrides:
        get in class PImage
        Parameters:
        x - x-coordinate of the pixel
        y - y-coordinate of the pixel
        See Also:
        PApplet.set(int, int, int), PApplet.pixels, PApplet.copy(PImage, int, int, int, int, int, int, int, int)

      • set

        public void set(int x,
 int y,
 int argb)
        Description copied from class: PImage
        ( begin auto-generated from PImage_set.xml ) Changes the color of any pixel or writes an image directly into the display window.

        The x and y parameters specify the pixel to change and the color parameter specifies the color value. The color parameter is affected by the current color mode (the default is RGB values from 0 to 255). When setting an image, the x and y parameters define the coordinates for the upper-left corner of the image, regardless of the current imageMode().

        Setting the color of a single pixel with set(x, y) is easy, but not as fast as putting the data directly into pixels[]. The equivalent statement to set(x, y, #000000) using pixels[] is pixels[y*width+x] = #000000. See the reference for pixels[] for more information. ( end auto-generated )
        Overrides:
        set in class PImage
        Parameters:
        x - x-coordinate of the pixel
        y - y-coordinate of the pixel
        argb - any value of the color datatype
        See Also:
        PImage.get(int, int, int, int), PImage.pixels, PImage.copy(PImage, int, int, int, int, int, int, int, int)

      • save

        public boolean save(java.lang.String filename)
        Description copied from class: PImage
        ( begin auto-generated from PImage_save.xml ) Saves the image into a file. Append a file extension to the name of the file, to indicate the file format to be used: either TIFF (.tif), TARGA (.tga), JPEG (.jpg), or PNG (.png). If no extension is included in the filename, the image will save in TIFF format and .tif will be added to the name. These files are saved to the sketch's folder, which may be opened by selecting "Show sketch folder" from the "Sketch" menu.

        To save an image created within the code, rather than through loading, it's necessary to make the image with the createImage() function so it is aware of the location of the program and can therefore save the file to the right place. See the createImage() reference for more information. ( end auto-generated )

        Advanced

        Save this image to disk.

        As of revision 0100, this function requires an absolute path, in order to avoid confusion. To save inside the sketch folder, use the function savePath() from PApplet, or use saveFrame() instead. As of revision 0116, savePath() is not needed if this object has been created (as recommended) via createImage() or createGraphics() or one of its neighbors.

        As of revision 0115, when using Java 1.4 and later, you can write to several formats besides tga and tiff. If Java 1.4 is installed and the extension used is supported (usually png, jpg, jpeg, bmp, and tiff), then those methods will be used to write the image. To get a list of the supported formats for writing, use:
        println(javax.imageio.ImageIO.getReaderFormatNames())

        To use the original built-in image writers, use .tga or .tif as the extension, or don't include an extension. When no extension is used, the extension .tif will be added to the file name.

        The ImageIO API claims to support wbmp files, however they probably require a black and white image. Basic testing produced a zero-length file with no error.

        Overrides:
        save in class PGraphics
        Parameters:
        filename - a sequence of letters and numbers

      • loadTexture

        public void loadTexture()

      • updateTexture

        public void updateTexture()

      • updateTexture

        public void updateTexture(int x,
 int y,
 int w,
 int h)

      • updateDisplay

        public void updateDisplay()

      • mask

        public void mask(PImage alpha)
        Description copied from class: PImage
        ( begin auto-generated from PImage_mask.xml ) Masks part of an image from displaying by loading another image and using it as an alpha channel. This mask image should only contain grayscale data, but only the blue color channel is used. The mask image needs to be the same size as the image to which it is applied.

        In addition to using a mask image, an integer array containing the alpha channel data can be specified directly. This method is useful for creating dynamically generated alpha masks. This array must be of the same length as the target image's pixels array and should contain only grayscale data of values between 0-255. ( end auto-generated )

        Advanced

        Set alpha channel for an image. Black colors in the source image will make the destination image completely transparent, and white will make things fully opaque. Gray values will be in-between steps.

        Strictly speaking the "blue" value from the source image is used as the alpha color. For a fully grayscale image, this is correct, but for a color image it's not 100% accurate. For a more accurate conversion, first use filter(GRAY) which will make the image into a "correct" grayscale by performing a proper luminance-based conversion.

        Overrides:
        mask in class PImage
        Parameters:
        alpha - image to use as the mask

      • filter

        public void filter(int kind)
        This is really inefficient and not a good idea in OpenGL. Use get() and set() with a smaller image area, or call the filter on an image instead, and then draw that.
        Overrides:
        filter in class PImage

      • filter

        public void filter(int kind,
 float param)
        This is really inefficient and not a good idea in OpenGL. Use get() and set() with a smaller image area, or call the filter on an image instead, and then draw that.
        Overrides:
        filter in class PImage
        Parameters:
        kind - Either THRESHOLD, GRAY, OPAQUE, INVERT, POSTERIZE, BLUR, ERODE, or DILATE
        param - unique for each, see above

      • filter

        public void filter(PShader shader)
        Overrides:
        filter in class PGraphics
        Parameters:
        shader - the fragment shader to apply

      • copy

        public void copy(int sx,
 int sy,
 int sw,
 int sh,
 int dx,
 int dy,
 int dw,
 int dh)
        Description copied from class: PImage
        ( begin auto-generated from PImage_copy.xml ) Copies a region of pixels from one image into another. If the source and destination regions aren't the same size, it will automatically resize source pixels to fit the specified target region. No alpha information is used in the process, however if the source image has an alpha channel set, it will be copied as well.

        As of release 0149, this function ignores imageMode(). ( end auto-generated )
        Overrides:
        copy in class PImage
        Parameters:
        sx - X coordinate of the source's upper left corner
        sy - Y coordinate of the source's upper left corner
        sw - source image width
        sh - source image height
        dx - X coordinate of the destination's upper left corner
        dy - Y coordinate of the destination's upper left corner
        dw - destination image width
        dh - destination image height
        See Also:
        PGraphics.alpha(int), PImage.blend(PImage, int, int, int, int, int, int, int, int, int)

      • copy

        public void copy(PImage src,
 int sx,
 int sy,
 int sw,
 int sh,
 int dx,
 int dy,
 int dw,
 int dh)
        Overrides:
        copy in class PImage
        Parameters:
        src - an image variable referring to the source image.

      • getTexture

        public Texture getTexture()
        Not an approved function, this will change or be removed in the future. This utility method returns the texture associated to the renderer's. drawing surface, making sure is updated to reflect the current contents off the screen (or offscreen drawing surface).

      • getTexture

        public Texture getTexture(boolean load)
        Not an approved function either, don't use it.

      • getTexture

        public Texture getTexture(PImage img)
        Not an approved function, this will change or be removed in the future. This utility method returns the texture associated to the image. creating and/or updating it if needed.
        Parameters:
        img - the image to have a texture metadata associated to it

      • getFrameBuffer

        public FrameBuffer getFrameBuffer()
        Not an approved function, test its use in libraries to grab the FB objects for offscreen PGraphics.

      • getFrameBuffer

        public FrameBuffer getFrameBuffer(boolean multi)

      • resize

        public void resize(int wide,
 int high)
        Description copied from class: PImage
        ( begin auto-generated from PImage_resize.xml ) Resize the image to a new width and height. To make the image scale proportionally, use 0 as the value for the wide or high parameter. For instance, to make the width of an image 150 pixels, and change the height using the same proportion, use resize(150, 0).

        Even though a PGraphics is technically a PImage, it is not possible to rescale the image data found in a PGraphics. (It's simply not possible to do this consistently across renderers: technically infeasible with P3D, or what would it even do with PDF?) If you want to resize PGraphics content, first get a copy of its image data using the get() method, and call resize() on the PImage that is returned. ( end auto-generated )
        Overrides:
        resize in class PImage
        Parameters:
        wide - the resized image width
        high - the resized image height
        See Also:
        PImage.get(int, int, int, int)

      • loadShader

        public PShader loadShader(java.lang.String fragFilename)
        Description copied from class: PGraphics
        ( begin auto-generated from loadShader.xml ) This is a new reference entry for Processing 2.0. It will be updated shortly. ( end auto-generated )
        Overrides:
        loadShader in class PGraphics
        Parameters:
        fragFilename - name of fragment shader file

      • loadShader

        public PShader loadShader(java.lang.String fragFilename,
 java.lang.String vertFilename)
        Overrides:
        loadShader in class PGraphics
        vertFilename - name of vertex shader file

      • shader

        public void shader(PShader shader)
        Description copied from class: PGraphics
        ( begin auto-generated from shader.xml ) This is a new reference entry for Processing 2.0. It will be updated shortly. ( end auto-generated )
        Overrides:
        shader in class PGraphics
        Parameters:
        shader - name of shader file

      • shader

        public void shader(PShader shader,
 int kind)
        Overrides:
        shader in class PGraphics
        kind - type of shader, either POINTS, LINES, or TRIANGLES

      • resetShader

        public void resetShader()
        Description copied from class: PGraphics
        ( begin auto-generated from resetShader.xml ) This is a new reference entry for Processing 2.0. It will be updated shortly. ( end auto-generated )
        Overrides:
        resetShader in class PGraphics

      • resetShader

        public void resetShader(int kind)
        Overrides:
        resetShader in class PGraphics
        Parameters:
        kind - type of shader, either POINTS, LINES, or TRIANGLES
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