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Index › Programming Questions & Help › Syntax Questions › Points to Array within shape
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Points to Array within shape (Read 386 times)
drew
Points to Array within shape
Feb 23rd, 2009, 3:23pm  
hey guys,
please bear with me for I am a little noob in a big processing world.

I have a bunch of points, which I got from finding pixels that are a certain color, so I can distinguish points within that shape.

Code:

for(int x = 0; x < width; x+=xspace) {
  for(int y=0; y<height; y+=yspace) {
    if(get(x,y) == pink) {
	     // draw my object on random points


this works to obtain the points, if I draw an ellipse on the x y points i get all the points I want within the shape.  However, my problem arrises when I try to draw my object on random points within that shape.  The only way I can think to do this is to place the points on a 2D array (for x and y) and then pick random spots in that array to draw the object.  But, Im not sure how to construct my array because I dont know my total x and y points, or how to add them exactly.

Thanks a whole lot for listening.
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koogy
Re: Points to Array within shape
Reply #1 - Feb 23rd, 2009, 3:29pm  
> But, Im not sure how to construct my array because I dont know my total x and y points, or how to add them exactly.

ArrayList.

http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html

basically it's an array you can add things to. so you don't need to know the initial size.
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drew
Re: Points to Array within shape
Reply #2 - Feb 25th, 2009, 5:02pm  
Thats what I needed to hear

Thank you for your post koogs
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