[Groovy and Processing] 투시 투영 투영법

package episode016

import processing.core.PApplet

class DisplayTest extends PApplet {

    def z = 0
    def speed = 0
    def points = []

    def void setup() {
        size(640, 480, P3D)
        frameRate(60)

        10000.times {
            points << [x: random(width), y: random(height), z: random(200) - 200]
        }
    }

    def void draw() {
        background(0, 0, 0)

        perspective(30, width / height, 0.01, 200)

        z += speed
        translate(0, 0, z)

        noSmooth()
        stroke(255, 255, 255)
        strokeWeight(1)
        points.each {
            point((float)it.x, (float)it.y, (float)it.z)
        }
    }

    def void keyPressed() {
        if (keyCode == UP) {
            speed += 1
        }
        if (keyCode == DOWN) {
            speed -= 1
        }
        if (key == ' ') {
            speed = 0
        }
        if (key == 'c') {
            speed = 0
            z = 0
        }
    }

    def static void main(args) {
        PApplet.main('episode016.DisplayTest')
    }
}