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a -p flag is added on commandline to run .pde scripts directly it makes use of the included processing.js glue a new scripts/processing directory is added with some examples to experiment with so far only a few processing scripts work
50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
// All Examples Written by Casey Reas and Ben Fry
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// unless otherwise stated.
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int xspacing = 8; // How far apart should each horizontal location be spaced
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int w; // Width of entire wave
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float theta = 0.0; // Start angle at 0
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float amplitude = 75.0; // Height of wave
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float period = 500.0; // How many pixels before the wave repeats
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float dx; // Value for incrementing X, to be calculated as a function of period and xspacing
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float[] yvalues; // Using an array to store height values for the wave (not entirely necessary)
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void setup() {
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size(400,300);
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frameRate(30);
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colorMode(RGB,255,255,255,100);
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smooth();
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w = width+16;
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dx = (TWO_PI / period) * xspacing;
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yvalues = new float[w/xspacing];
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}
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void draw() {
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background(0);
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calcWave();
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renderWave();
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}
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void calcWave() {
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// Increment theta (try different values for 'angular velocity' here
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theta += 0.02;
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// For every x value, calculate a y value with sine function
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float x = theta;
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for (int i = 0; i < yvalues.length; i++) {
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yvalues[i] = sin(x)*amplitude;
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x+=dx;
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}
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}
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void renderWave() {
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// A simple way to draw the wave with an ellipse at each location
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for (int x = 0; x < yvalues.length; x++) {
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noStroke();
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fill(255,50);
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ellipseMode(CENTER);
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ellipse(x*xspacing,width/2+yvalues[x],16,16);
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}
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}
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