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37 lines
805 B
Plaintext
37 lines
805 B
Plaintext
/**
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* TRIANGLE_STRIP Mode
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* by Ira Greenberg.
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*
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* Generate a closed ring using vertex()
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* function and beginShape(TRIANGLE_STRIP)
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* mode. outerRad and innerRad variables
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* control ring's outer/inner radii respectively.
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* Trig functions generate ring.
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*/
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size(200, 200);
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background(204);
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smooth();
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int x = width/2;
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int y = height/2;
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float outerRad = min(width, height) * 0.4;
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float innerRad = outerRad * 0.6;
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float px = 0, py = 0, angle = 0;
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float pts = 36;
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float rot = 360.0/pts;
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beginShape(TRIANGLE_STRIP);
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for (int i = 0; i < pts; i++) {
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px = x + cos(radians(angle))*outerRad;
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py = y + sin(radians(angle))*outerRad;
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angle += rot;
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vertex(px, py);
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px = x + cos(radians(angle))*innerRad;
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py = y + sin(radians(angle))*innerRad;
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vertex(px, py);
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angle += rot;
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}
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endShape();
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