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Topic: rotate where? (Read 377 times) |
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st33d
 
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rotate where?
« on: Mar 30th, 2005, 1:28am » |
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I want to have a string of text operate like an x,y,z line. I'm assuming rotateX,Y,Z will do this for me if I pack it in with a function to put the text to a translated point. But it doesn't. I haven't got the slightest clue in what direction I need to point the text. I've tried pretty much every atan2 combination I can think of and I'm still getting nowhere.
Code:
void setup(){
size(400,400);
fill(0);
}
void loop(){
background(255);
translate(200,200);
rotateY((PI/width)*mouseX);
rotateX((PI/width)*mouseY);
line(0,0,0,200,200,200);
textLine(0,0,0,200,200,200);
}
void textLine(float x1, float y1, float z1, float x2, float y2, float z2){
push();
float dx = x2-x1;
float dy = y2-y1;
float dz = z2-z1;
translate(x1,y1,z1);
/*
dx,dy
dy,dx
dx,dz
dz,dx
dy,dz
dz,dy
*/
float thetaX = atan2(dy,dz);
float thetaY = atan2(dz,dx);
float thetaZ = atan2(dy,dx);
rotateX(thetaX);
rotateY(thetaY);
rotateZ(thetaZ);
//text(message,0,0);
rect(0,0,200,4);
pop();
}
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Please help.
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| « Last Edit: Mar 30th, 2005, 1:50am by st33d » |
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I could murder a pint.
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