Hi all,

I'm trying to divide an image into a number of slices and apply a mask to each one.
In setup, I loop through the number of slices and create a PImage for each one using the get() method. I then create a new shape to mask each one (an instance of a class I created) and pass it the width and height of the new PImage. I then apply the shape as a mask to the slice.
for some reason I get the following error: "The PImage used with mask() must be the same size as the applet".
I printed both their sizes just before I apply the mask and they return the same values.
Any ideas?

Here's the code:


PImage img;
PImage shapeImg;
PImage slices[];
MaskShape[] mymasks;
int numofslices, sliceWidth, sliceHeight;


void setup(){
 size(300,225);
 smooth();
 img = loadImage("../../../LiverpoolPhotos/liverpool8.jpg");
int numofSlices = int(random(3, 10));
slices = new PImage[numofSlices];
sliceWidth = img.width / numofSlices;
sliceHeight = img.height / numofSlices;

 mymasks = new MaskShape[numofSlices];
 
 for(int i=0; i<numofSlices; i++){
   int xpos = int(random(width-50));
   int ypos = int(random(height-50));
 
  slices[i] = img.get(i*sliceWidth+1, i*sliceHeight+1, sliceWidth, sliceHeight);
   mymasks[i] = new MaskShape(sliceWidth, sliceHeight);
   
 slices[i].mask(shapeImg);
 println("slice: "+slices[i].width+", "+slices[i].height);
 println("shape: "+shapeImg.width+", "+shapeImg.height);
 image(slices[i], xpos, ypos);
 }

}

void draw(){

}


class MaskShape{
 float randx = 20+random(width-40);
 float randy = 20+random(height-40);
 int numofver = int(random(3, 5));
 float vercs[][] = new float[numofver][2];
 PGraphics pg;
 int shapeWidth, shapeHeight;


 MaskShape(int imgWidth, int imgHeight){
 shapeWidth = imgWidth;
 shapeHeight = imgHeight;
 println(shapeWidth+", "+shapeHeight);
 pg = createGraphics(shapeWidth, shapeHeight, JAVA2D);



   vercs[0][0] = randx;
   vercs[0][1] = randy;
   vercs[1][0] = randx + random(15, 40);
   vercs[1][1] = randy + random(-40, 40);
   vercs[2][0] = randx + random(15, 40);
   vercs[2][1] = vercs[1][1] + random(15, 40);
   for (int j=3; j<numofver; j++){
     vercs[j][0] =   vercs[j-1][0] - random(10, 40);
     vercs[j][1] = randy+random(15, 40);
   }

     pg.background(0);
     pg.fill(255);
     pg.beginDraw();
     pg.beginShape();
     vertex(randx, randy);
     for (int k=0; k<numofver; k++){
     pg.vertex(vercs[k][0], vercs[k][1]);
   }
   pg.endShape(CLOSE);
   pg.endDraw();

  shapeImg = pg.get(0, 0, pg.width, pg.height);

 }

}



Thanks,
Shira

i could track down where the problem is. Its in this line of code :
 slices[i] = img.get(i*sliceWidth+1, i*sliceHeight+1, sliceWidth, sliceHeight);

remove the +1 and it is working, although i still dont see anything on the screen. but maybe you know what to do now.