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Topic: more of a 'feature' than a bug (ellipse -y) (Read 440 times) |
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alexic
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more of a 'feature' than a bug (ellipse -y)
« on: Jan 29th, 2005, 9:57am » |
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using an ellipse with an inverse radius and an offset will give you a decent n-gon, much easier than doing it mathematically. it might be a bug, but i'm not that adept to know where it comes from, and it would be a decent cheat if you could use the same code to produce the effect 'legally'.
quote:
// oddity: n-gons with negative ellipse radius //
int dim = 600;
int r=200;
int xpos=dim/2;
int ypos=dim/2;
void setup() {
size(dim,dim);
ellipseMode(CENTER_RADIUS);
}
void draw() {
background(0);
color bg = color(33, 66, 66, 66);
fill(bg);
noStroke();
translate(xpos,ypos);
ellipse(0, 0, r, -r +0.0); // 4-gon
ellipse(0, 0, r, -r +0.3); // 5-gon
ellipse(0, 0, r, -r +0.5); // 6-gon
ellipse(0, 0, r, -r +1.0); // 7-gon
ellipse(0, 0, r, -r +2.0); // 8-gon etc.
}
:endquote
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