OpenGLUT Documentation

Geometric Rendering
[OpenGLUT API Reference]

Functions

void glutSolidCone (GLdouble base, GLdouble height, GLint slices, GLint stacks)

void glutSolidCube (GLdouble width)

void glutSolidCylinder (GLdouble radius, GLdouble height, GLint slices, GLint stacks)

void glutSolidDodecahedron (void)

void glutSolidIcosahedron (void)

void glutSolidOctahedron (void)

void glutSolidRhombicDodecahedron (void)

void glutSolidSierpinskiSponge (int num_levels, const GLdouble offset[3], GLdouble scale)

void glutSolidSphere (GLdouble radius, GLint slices, GLint stacks)

void glutSolidTeapot (GLdouble size)

void glutSolidTetrahedron (void)

void glutSolidTorus (GLdouble dInnerRadius, GLdouble dOuterRadius, GLint nSides, GLint nRings)

void glutWireCone (GLdouble base, GLdouble height, GLint slices, GLint stacks)

void glutWireCube (GLdouble width)

void glutWireCylinder (GLdouble radius, GLdouble height, GLint slices, GLint stacks)

void glutWireDodecahedron (void)

void glutWireIcosahedron (void)

void glutWireOctahedron (void)

void glutWireRhombicDodecahedron (void)

void glutWireSierpinskiSponge (int num_levels, const GLdouble offset[3], GLdouble scale)

void glutWireSphere (GLdouble radius, GLint slices, GLint stacks)

void glutWireTeapot (GLdouble size)

void glutWireTetrahedron (void)

void glutWireTorus (GLdouble dInnerRadius, GLdouble dOuterRadius, GLint nSides, GLint nRings)

Detailed Description

This subset of OpenGLUT provides some elementary objects that are more or less standard fare for computer graphics. The objects all provide coordinates and surface normals.

Function Documentation

void glutSolidCone ( GLdouble base,

GLdouble height,

GLint slices,

GLint stacks

)

Draw a solid cone.

Parameters:: base Cone radius at the base in the xy plane.

height Height of cone in positive z direction.

slices The number of divisions around the z axis. (latitudal)

stacks The number of divisions along the z axis. (longitudal)

The glutSolidCone() function draws a shaded cone with a base in the xy-plane, oriented in the positive z direction.

Note:: The number of polygons representing the conical surface is proportional to (slices*stacks).

See also:: glutWireCone()

void glutSolidCube ( GLdouble width )

Draw a solid cube centered at the origin.

Parameters:: width The width, height and depth of the cube.

The glutSolidCube() function draws a solid-shaded cube with side-length given by width. The vertices of the cube are at (+/- width/2, +/- width/2, +/- width/2), so that the cube is centered at the origin.

Author:: Code contributed by Andreas Umbach <marvin@dataway.ch>

See also:: glutWireCube()

void glutSolidCylinder ( GLdouble radius,

GLdouble height,

GLint slices,

GLint stacks

)

Draw a solid cylinder.

Parameters:: radius Radius of the cylinder.

height Z height.

slices Divisions around z axis.

stacks Divisions along z axis.

glutSolidCylinder() draws a shaded cylinder, the center of whose base is at the origin and whose axis is along the positive z axis.

See also:: glutWireCylinder()

void glutSolidDodecahedron ( void )

Draw a solid dodecahedron.

This function draws a regular, solid, 12-sided polyhedron centered at the origin. The distance from the origin to the vertices is sqrt(3). The facets are pentagons.

See also:: glutWireDodecahedron(), glutSolidRhombicDodecahedron(), glutWireRhombicDodecahedron()

void glutSolidIcosahedron ( void )

Draw a solid icosahedron.

This function draws a regular, solid 20-sided polyhedron centered at the origin. The distance from the origin to the vertices is 1.

See also:: glutWireIcosahedron()

void glutSolidOctahedron ( void )

Draw a solid octahedron.

This function draws a regular, solid 8-sided polyhedron centered at the origin. The vertices are at (+/-1, 0, 0), (0, +/-1, 0), (0, 0, +/-1).

Note:: We visit the same vertices the same number of times as in the wire octahedron, but the order is different.

See also:: glutWireOctahedron()

void glutSolidRhombicDodecahedron ( void )

Draw a solid rhombic dodecahedron.

This function draws a solid-shaded dodecahedron whose facets are rhombic and whose vertices are at unit radius. No facet lies normal to any coordinate axes. The polyhedron is centered at the origin.

See also:: glutWireRhombicDodecahedron(), glutWireDodecahedron(), glutSolidDodecahedron()

void glutSolidSierpinskiSponge ( int num_levels,

const GLdouble offset[3],

GLdouble scale

)

Draw a solid Spierspinski's sponge.

Parameters:: num_levels Recursive depth.

offset Location vector.

scale Relative size.

This function recursively draws a few levels of a solid-shaded Sierpinski's Sponge. If num_levels is 0, draws 1 tetrahedron. The offset is a translation. The z axis is normal to the base. The sponge is centered at the origin.

Note:: Runtime is exponential in num_levels .

Todo:: Consider removing the offset parameter from the API (use a helper function).

See also:: glutWireSierpinskiSponge()

void glutSolidSphere ( GLdouble radius,

GLint slices,

GLint stacks

)

Draw a solid sphere centered at the origin.

Parameters:: radius Sphere radius.

slices The number of divisions around the z axis. (latitudal)

stacks The number of divisions along the z axis. (longitudal)

The glutSolidSphere() function draws a shaded sphere centered at the origin. The surface is created from quadrangles (except for triangles as degenerate quads at the poles) in a longitude/latitude pattern. The equatorial great circle lies in the xy-plane and is centered on the origin.

Note:: The number of polygons representing the spherical surface is proportional to (slices*stacks).

See also:: glutWireSphere()

void glutSolidTeapot ( GLdouble size )

Draw a solid teapot.

Parameters:: size Scale factor.

Draws the standard Teapot, solid shaded, using OpenGL evaluators. This is the classic "Utah Teapot" of computer graphics. The base should lie in the xy-plane with "up" being along the positive z axis.

This is derived from SGI code. It should also be the same as the teapot modeled by Martin Newell in 1975.

See also:: glutWireTeapot()

void glutSolidTetrahedron ( void )

Draw a solid tetrahedron.

This function draws a regular, solid 4-sided polyhedron centered at the origin. The distance from the origin to the vertices is 1.

Todo:: See todo-list on glutWireTetrahedron().

See also:: glutWireTetrahedron()

void glutSolidTorus ( GLdouble dInnerRadius,

GLdouble dOuterRadius,

GLint nSides,

GLint nRings

)

Draw a solid torus.

Parameters:: dInnerRadius Radius of ``tube''

dOuterRadius Radius of ``path''

nSides Facets around ``tube''

nRings Joints along ``path''

This function effectively wraps a cylinder with nSides slats and bends it at nRings facets around a circular path, forming a torus, or ``donut''. The center is at the origin and the ``path'' rings around the z axis.

The torus parameters can be explored interactively with the OpenGLUT shapes demo.

Note:: dInnerRadius and dOuterRadius are not analogous to similar measurements of an anulus.

See also:: glutWireTorus()

void glutWireCone ( GLdouble base,

GLdouble height,

GLint slices,

GLint stacks

)

Draw a wireframe cone.

Parameters:: base Cone radius at the base in the xy plane.

height Height of cone in positive z direction.

slices The number of divisions around the z axis. (latitudal)

stacks The number of divisions along the z axis. (longitudal)

The glutWireCone() function draws a wireframe cone with a base in the xy plane oriented in positive z.

Note:: The number of line segments representing the conical surface is proportional to (slices*stacks).

See also:: glutSolidCone()

void glutWireCube ( GLdouble width )

Draw a wireframe cube centered at the origin.

Author:: Code contributed by Andreas Umbach <marvin@dataway.ch>

Parameters:: width The width, height and depth of the cube.

The glutWireCube() function draws an axis-aligned wireframe cube with a specified width, height and depth. The vertices of the cube are at (+/- width/2, +/- width/2, +/- width/2), so that the cube is centered at the origin.

See also:: glutSolidCube()

void glutWireCylinder ( GLdouble radius,

GLdouble height,

GLint slices,

GLint stacks

)

Draw a wireframe cylinder.

Parameters:: radius Radius of cylinder.

height Z height.

slices Number of divisions around the z axis.

stacks Number of divisions along the z axis.

glutWireCylinder() draws a wireframe of a cylinder, the center of whose base is at the origin, and whose axis parallels the z axis.

See also:: glutSolidCylinder()

void glutWireDodecahedron ( void )

Draw a wireframe dodecahedron.

This function draws a regular, wireframe 12-sided polyhedron centered at the origin. The distance from the origin to the vertices is sqrt(3). The facets are pentagons. No facet is normal any of the x, y, or z axes.

See also:: glutSolidDodecahedron(), glutWireRhombicDodecahedron(), glutSolidRhombicDodecahedron()

void glutWireIcosahedron ( void )

Draw a wireframe icosahedron.

This function draws a regular, solid 20-sided polyhedron centered at the origin. The distance from the origin to the vertices is 1. No facet is normal to any of the x, y, or z axes.

See also:: glutSolidIcosahedron()

void glutWireOctahedron ( void )

Draw a wireframe octahedron.

This function draws a regular wireframe 8-sided polyhedron centered at the origin. The vertices are at (+/-1, 0, 0), (0, +/-1, 0), (0, 0, +/-1).

Note:

We visit the same vertices the same number of times as for the solid octahedron, but the order is different.

Draws every edge twice.

The lines have normals, but the normals are from the facets, rather than upon the edge. If you squint too hard, the lighting on a wireframe octahedron does not look quite right.

Todo:: It may be faster (and look better) to draw each edge once, setting the Normal at each edge. (I don't think that this matters all that much, but a lineloop was proposed for the wire Cube for speed.)

See also:: glutSolidOctahedron()

void glutWireRhombicDodecahedron ( void )

Draw a wireframe rhombic dodecahedron.

This function draws a wireframe dodecahedron whose facets are rhombic and whose vertices are at unit radius. No facet lies normal to any coordinate axes. The polyhedron is centered at the origin.

See also:: glutSolidRhombicDodecahedron(), glutWireDodecahedron(), glutSolidDodecahedron()

void glutWireSierpinskiSponge ( int num_levels,

const GLdouble offset[3],

GLdouble scale

)

Draw a wireframe Spierspinski's sponge.

Parameters:: num_levels Recursive depth.

offset Location vector.

scale Relative size.

This function recursively draws a few levels of Sierpinski's Sponge in wireframe. If num_levels is 0, draws 1 tetrahedron. The offset is a translation. The z axis is normal to the base. The sponge is centered at the origin.

Note:: Runtime is exponential in num_levels .

See also:: glutSolidSierpinskiSponge()

void glutWireSphere ( GLdouble radius,

GLint slices,

GLint stacks

)

Draw a wireframe sphere centered at the origin.

Parameters:: radius Sphere radius.

slices The number of divisions around the z axis. (latitudal)

stacks The number of divisions along the z axis. (longitudal)

The glutWireSphere() function draws a wireframe sphere centered at the origin. The "equatorial" great circle lies in the xy-plane.

Note:: The number of line segments representing the spherical surface is proportional to (slices*stacks).

See also:: glutSolidSphere().

void glutWireTeapot ( GLdouble size )

Draw a wireframe teapot.

Parameters:: size Scale factor.

This function draws the standard Teapot in wireframe using OpenGL evaluators. This is the classic "Utah Teapot" of computer graphics. The base should lie in the xy-plane with "up" being along the positive z axis.

This is derived from SGI code. It should also be the same as the teapot modeled by Martin Newell in 1975.

See also:: glutSolidTeapot()

void glutWireTetrahedron ( void )

Draw a wireframe tetrahedron.

This function draws a regular, wireframe 4-sided polyhedron centered at the origin. The distance from the origin to the vertices is 1.

Todo:

Merge r0 r1 r2 and r3 into one array.

Put the normals into the (or an) array.

Make the array static const, with file scope, and share with glutSolidTetrahedron().

Maybe consolidate with the SierpinskySponge?

See also:: glutSolidTetrahedron()

void glutWireTorus ( GLdouble dInnerRadius,

GLdouble dOuterRadius,

GLint nSides,

GLint nRings

)

Draw a wireframe torus.

Parameters:: dInnerRadius Radius of ``tube''

dOuterRadius Radius of ``path''

nSides Facets around ``tube''

nRings Joints along ``path''

The torus parameters can be explored interactively with the OpenGLUT shapes demo.

Note:: dInnerRadius and dOuterRadius are not analogous to similar measurements of an anulus.

See also:: glutSolidTorus()

OpenGLUT Development @ Sourceforge

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The OpenGLUT project is hosted by sourceforge.net.

Geometric Rendering [OpenGLUT API Reference]

Functions

Detailed Description

Function Documentation

Geometric Rendering
[OpenGLUT API Reference]