a port of the Processing Visualization Language

Name | ## HALF_PI (1.57079...) |
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Examples | float f = 0.0; beginShape(POLYGON); while(f < HALF_PI) { vertex(width/2 + cos(f)*40, height/2 + sin(f)*40); f += PI/12.0; } endShape(); |
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Description | HALF_PI is a mathematical constant with the value 1.57079632679489661923. It is half the ratio of the circumference of a circle to its diameter. It is useful in combination with the trigonometric functions sin() and cos(). |
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Syntax | HALF_PI |
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Parameters | |||

Usage | Web & Application | ||

Related | PI TWO_PI |