Commit 2a9d681

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Merge pull request #10 from CodingTrain/shiffman-patch-4

updating 3D Projection code

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+11

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Lines changed: 11 additions & 13 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,19 +1,13 @@`
`1`		`-// Daniel Shiffman`
`2`		`-// http://youtube.com/thecodingtrain`
`3`		`-// http://codingtra.in`
`4`		`-`
	`1`	`+// Daniel Shiffman / Coding Train`
`5`	`2`	`// Coding Challenge #112: 3D Rendering with Rotation and Projection`
	`3`	`+// https://thecodingtrain.com/challenges/112-3d-rendering-with-rotation-and-projection`
`6`	`4`	`// https://youtu.be/p4Iz0XJY-Qk`
	`5`	`+// p5: https://editor.p5js.org/codingtrain/sketches/r8l8XXD2A`
`7`	`6`
`8`	`7`	`float angle = 0;`
`9`	`8`
`10`	`9`	`PVector[] points = new PVector[8];`
`11`	`10`
`12`		`-float[][] projection = {`
`13`		`- {1, 0, 0},`
`14`		`- {0, 1, 0}`
`15`		`-};`
`16`		`-`
`17`	`11`	`void setup() {`
`18`	`12`	`size(600, 400);`
`19`	`13`
`@@ -57,6 +51,14 @@ void draw() {`
`57`	`51`	`PVector rotated = matmul(rotationY, v);`
`58`	`52`	`rotated = matmul(rotationX, rotated);`
`59`	`53`	`rotated = matmul(rotationZ, rotated);`
	`54`	`+`
	`55`	`+ float distance = 2;`
	`56`	`+ float z = 1 / (distance - rotated.z);`
	`57`	`+ float[][] projection = {`
	`58`	`+ {z, 0, 0},`
	`59`	`+ {0, z, 0}`
	`60`	`+ };`
	`61`	`+`
`60`	`62`	`PVector projected2d = matmul(projection, rotated);`
`61`	`63`	`projected2d.mult(200);`
`62`	`64`	`projected[index] = projected2d;`
`@@ -78,10 +80,6 @@ void draw() {`
`78`	`80`	`connect(i, i+4, projected);`
`79`	`81`	`}`
`80`	`82`
`81`		`-`
`82`		`-`
`83`		`-`
`84`		`-`
`85`	`83`	`angle += 0.03;`
`86`	`84`	`}`
`87`	`85`

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