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Author |
Topic: circular arcs (Read 729 times) |
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REAS
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Re: circular arcs
« Reply #1 on: Dec 4th, 2002, 8:50pm » |
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hello ed,
this is not the best way but it's one way and i think it is clear. in this code, you specify the beginning and end points of the arc using degree values (0-360).
Code:
void setup()
{
size(300, 300);
}
void loop()
{
arc_degrees(width/2, height/2, 0, 270, 100);
}
void arc_degrees(int x, int y, int begin, int end, int radius)
{
if (begin > end) {
int temp = begin;
begin = end;
end = temp;
}
beginShape(LINE_STRIP);
for(int i=begin; i<=end; i++) {
float xval = radians(i);
float yval = radians(i);
vertex(x + cos(xval)*radius, y - sin(yval)*radius);
}
endShape();
}
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| « Last Edit: Dec 4th, 2002, 11:20pm by REAS » |
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