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draw an arrow method for Processing
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| void setup() { | |
| size(400, 400); | |
| stroke(255); | |
| noLoop(); | |
| } | |
| void draw() { | |
| background(255); | |
| stroke(255, 0, 0); | |
| fill(255, 0, 0); | |
| for (int i = 0; i < 100; i++) { | |
| drawArrow(width / 2, height / 2, (float)random(width), (float)random(height)); | |
| } | |
| } | |
| void drawArrow(float x1, float y1, float x2, float y2) { | |
| float a = dist(x1, y1, x2, y2) / 50; | |
| pushMatrix(); | |
| translate(x2, y2); | |
| rotate(atan2(y2 - y1, x2 - x1)); | |
| triangle(- a * 2 , - a, 0, 0, - a * 2, a); | |
| popMatrix(); | |
| line(x1, y1, x2, y2); | |
| } |
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