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Index › Programming Questions & Help › Syntax Questions › conditionals question!
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conditionals question! (Read 435 times)
brt
conditionals question!
May 30th, 2009, 6:32am  
so what i want to do is make random circles apear in my canvas and depending on their position change color! i know how to do it in simple and regular shapes, but imagine i want it to form a logo? Code:
void setup(){
  size(400,400);
}
void draw(){
float xpos = random(width);
float ypos = random(height);
if(xpos < 100 || xpos >300 || ypos < 100 || ypos >300  ){
  fill (200,0,0);
}else{
  fill(0,0,200);
}
ellipse(xpos,ypos, 10, 10);
}
something like this! is it possible to import a SVG logo and program something like, "if a collision exists change fill? or if its over that shape change fill? or do i have to list all single existing position on my logo and write in in if(xpos<100 ) and so on?
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PhiLho 
Re: conditionals question!
Reply #1 - May 30th, 2009, 8:15am  
You can look at the color of the pixel at the draw coordinates (using get() for example) and depending on its color (or brightness, etc.), choose a fill color.
If you don't want to draw the initial shape, you can load it in a PImage and do the get() (or, here, the pixels[] method would be more efficient) from there.
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brt
Re: conditionals question!
Reply #2 - May 30th, 2009, 8:23am  
well i didn't understand a bit but you gave me something to look for! thanks!
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