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Topic: Re: Round in circles (Read 1599 times) |
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kurol
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Re: Round in circles
« on: Mar 29th, 2005, 12:00pm » |
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LOOKIE WHAT I MADE, MOMMY!!!
I'm not quite sure what your intention is, because you said, "I'm trying to get a line draw working within the confines of a circle," and the example code kind of usually sticks to the outside. But here's one thing:
Code:| if (sqrt(sq(width/2-xl) + sq(height/2 - yl)) > cDia/2) { |
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can be replaced by
Code:| if (dist(width/2,height/2,xl,yl) > cDia/2) { |
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I hate programming . . .  
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Mark Hill
 
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Re: Round in circles
« Reply #1 on: Mar 29th, 2005, 12:15pm » |
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Thanks for the input.
I know what the code produces, which is I why I posted the question in the first place.
I'm interested in registering an influence of the confining shape upon the line being drawn.
Restricting the drawing to within the confines of a circle is achieved thus:
Code:
xl = mouseX-width/2;
yl = mouseY-height/2;
i = atan2(mouseY-height/2, mouseX-width/2);
if (dist(0,0,xl,yl) > r) { // yep, it works!
xl = r * cos(i);
yl = r * sin(i);
}
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Mark Hill
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Round in circles
« Reply #2 on: Mar 29th, 2005, 12:22pm » |
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Deleted original post instead of modify, sorry.
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| « Last Edit: Mar 29th, 2005, 12:22pm by Mark Hill » |
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