Click to randomize and reset animation. Press “A” to toggle autoplay – autoplay will automatically clear and redraw the screen when it is full. Press “R” to reset the draw color to white. Press “C” to randomize the current draw color.
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ArrayList<PVector> allVectors; float wanderSpeed = 0.7; int numSteps = 10; float lineHue = 1.0; float lineSat = 0.0; float lineBright = 1.0; float colorTrigger = 0.999; boolean autoplay = false; void setup() { size(940, 540); colorMode(HSB, 1.0, 1.0, 1.0, 1.0); background(0.0); noFill(); createLine(); randomizeColor(); } void draw() { strokeWeight(1.01); // randomize color if neccesary if (random(0, 1) > colorTrigger) randomizeColor(); stroke(lineHue, lineSat, lineBright, 0.05); fill(255); // draw top line beginShape(); for (int i=0; i<allVectors.size (); i++) { PVector vector = allVectors.get(i); if (i == 0) curveVertex(vector.x, vector.y); curveVertex(vector.x, vector.y); if (i == allVectors.size()-1) curveVertex(vector.x, vector.y); } endShape(); // draw bottom line beginShape(); for (int i=0; i<allVectors.size (); i++) { PVector vector = allVectors.get(i); if (i == 0)curveVertex(vector.x, height-vector.y); curveVertex(vector.x, height-vector.y); if (i == allVectors.size()-1) curveVertex(vector.x, height-vector.y); vector.x += random(-wanderSpeed, wanderSpeed); vector.y += random(-wanderSpeed, wanderSpeed); vector.y += 0.1; if (i == 0) vector.x = 0; if (i == allVectors.size()-1) vector.x = width; } endShape(); checkAutoplay(); } void checkAutoplay() { if (autoplay) { // reset if line has left screen for (int i=0; i<allVectors.size (); i++) { PVector vector = allVectors.get(i); if (vector.y < height) return; } // reset if boundary check didn't exit functiion reset(); } } void createLine() { allVectors = new ArrayList<PVector>(); for (int i=0; i<=numSteps; i++) { PVector vector = new PVector(i * width/numSteps, height/2); allVectors.add(vector); } } void randomizeColor() { lineHue = random(0, 1); lineSat = random(0, 1); } void reset() { background(0.0); createLine(); randomizeColor(); wanderSpeed = random(0.3, 2.0); numSteps = (int)random(1, 20); colorTrigger = random(0.99, 0.9999); } void mousePressed() { reset(); } void keyPressed() { if (key == 'c') { randomizeColor(); } if (key == 'r') { lineHue = 1.0; lineSat = 0.0; lineBright = 1.0; } if (key == 'a') { autoplay = !autoplay; } } |