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Topic: shape methods (Read 315 times) |
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benelek
 
 
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shape methods
« on: Mar 9th, 2003, 1:04am » |
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wouldnt mind being able to do this:
Code:
beginShape(LINE_LOOP);
vertex(0,0);
vertex(80,0);
rotate(radians(30));
vertex(80,0);
rotate(radians(30));
vertex(80,0);
endShape();
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-bnlk
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fry
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Re: shape methods
« Reply #1 on: Mar 25th, 2003, 4:23pm » |
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yeouch. not even opengl lets you do this 
though you're right, it is nice in your example. for something like that in the meantime, you can also just use cos/sin.
Code:beginShape(LINE_LOOP);
vertex(0, 0);
vertex(80*cos(radians(0)), 80*sin(radians(0)));
vertex(80*cos(radians(30)), 80*sin(radians(30)));
vertex(80*cos(radians(60)), 80*sin(radians(60)));
endShape(); |
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or something like that..
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benelek
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Re: shape methods
« Reply #2 on: Mar 26th, 2003, 1:12pm » |
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actually, ive been wondering about that for a while - which would be faster, generating the x,y,z coordinates of something to draw (using cos/sin/tan etc), or using the rotate methods in conjunction with push/pop to move to those points and then draw?
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benelek
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Re: shape methods
« Reply #3 on: Mar 26th, 2003, 1:13pm » |
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uh, perhaps i should rephrase - which would be more efficient?
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fry
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Re: shape methods
« Reply #4 on: Mar 26th, 2003, 1:36pm » |
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at least for individual points, doing sin/cos yourself is more efficient. rotate() involves more math internally. plus sin/cos are fun!
for groups of points/shapes it's better to use rotate() and company.
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