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53 lines
1.0 KiB
Plaintext
53 lines
1.0 KiB
Plaintext
/**
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* Smoke Particle System
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* by Daniel Shiffman.
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*
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* A basic smoke effect using a particle system.
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* Each particle is rendered as an alpha masked image.
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*/
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ParticleSystem ps;
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Random generator;
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void setup() {
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size(640, 200);
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colorMode(RGB, 255, 255, 255, 100);
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// Using a Java random number generator for Gaussian random numbers
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generator = new Random();
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// Create an alpha masked image to be applied as the particle's texture
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PImage msk = loadImage("texture.gif");
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PImage img = new PImage(msk.width,msk.height);
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for (int i = 0; i < img.pixels.length; i++) img.pixels[i] = color(255);
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img.mask(msk);
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ps = new ParticleSystem(0,new Vector3D(width/2,height-20),img);
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smooth();
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}
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void draw() {
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background(75);
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// Calculate a "wind" force based on mouse horizontal position
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float dx = (mouseX - width/2) / 1000.0;
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Vector3D wind = new Vector3D(dx,0,0);
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wind.display(width/2,50,500);
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ps.add_force(wind);
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ps.run();
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for (int i = 0; i < 2; i++) {
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ps.addParticle();
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}
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}
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