Reference for Processing version 1.2. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.
| Name | QUARTER_PI (0.78539...) |
|---|---|
| Examples | float angle = 0.0;
beginShape(POLYGON);
vertex(width/2, height/2);
while(angle QUARTER_PI) {
vertex(width/2 + cos(angle)*40, height/2 + sin(angle)*40);
angle += PI/12.0;
}
endShape(CLOSE); |
| Description | QUARTER_PI is a mathematical constant with the value 0.7853982. It is one quarter the ratio of the circumference of a circle to its diameter. It is useful in combination with the trigonometric functions sin() and cos(). |
| Usage | Web & Application |
| Related | PI TWO_PI HALF_PI |
