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Index › Programming Questions & Help › Syntax Questions › Blend Mode Problem?Is it a bug
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Blend Mode Problem?Is it a bug? (Read 492 times)
alp
Blend Mode Problem?Is it a bug?
Jun 16th, 2009, 2:47pm  
Hi,

I try to change Image's Blend mode randomly. However, I can't do. Processing warns about last variable. It says, last variable in blend have to be String not int?????? My code is basically like this;

String[] modeArray = {"ADD","SUBTRACT","MULTIPLY"};
int index;

PImage mage;

void setup()
{
 ....

 mage = loadImage("foo.jpg");
 image(mage , 0, 0, width, height);
}

void draw()
{
  index = round(random(3));
  mage .blend(mage , 0, 0, width, height, 0, 0,round(random(width)), round(random(height)),modeArray[index] );
}
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Cedric
Re: Blend Mode Problem?Is it a bug?
Reply #1 - Jun 16th, 2009, 7:45pm  
dont know if thats the problem but instead of round(random(3)); you should use int(random(3); giving you 0, 1, 2... and not 0,1,2,3 like round would do.
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PhiLho 
Re: Blend Mode Problem?Is it a bug?
Reply #2 - Jun 17th, 2009, 1:22am  
The compiler is right...
You do:
blend(img, 0, 0, 33, 100, 67, 0, 33, 100, SUBTRACT);
not
blend(img, 0, 0, 33, 100, 67, 0, 33, 100, "SUBTRACT");
Here, SUBSTRACT is an int constant.

So correct with:
int[] modeArray = { ADD, SUBTRACT, MULTIPLY };
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