• fullscreen
  • sketch_dec21a.pde
  • PImage img;
    int w = 90;
    float[][] matrix = { { -1, -1, -1 },
                         { -1,  9, -1 },
                         { -1, -1, -1 } };
    void setup() {
      size(450, 393);
      frameRate(40);
      img = loadImage("ccontacts.png");
    }
    void draw() {
      image(img,0,0);
        filter(BLUR,10);
      int xstart = constrain(mouseX-w/2,0,img.width);
      int ystart = constrain(mouseY-w/2,0,img.height);
      int xend = constrain(mouseX+w/2,0,img.width);
      int yend = constrain(mouseY+w/2,0,img.height);
      int matrixsize = 3;
      loadPixels();
      for (int x = xstart; x < xend; x++) {
        for (int y = ystart; y < yend; y++ ) {
          color c = convolution(x,y,matrix,matrixsize,img);
          int loc = x + y*img.width;
          pixels[loc] = c;
        }
      }
      updatePixels();
     
      noStroke();
      noFill();
      rect(xstart,ystart,w,w);
    }
     
    color convolution(int x, int y, float[][] matrix, int matrixsize, PImage img) {
      float rtotal = 0.0;
      float gtotal = 0.0;
      float btotal = 0.0;
      int offset = matrixsize / 2;
      for (int i = 0; i < matrixsize; i++){
        for (int j= 0; j < matrixsize; j++){
          int xloc = x+i-offset;
          int yloc = y+j-offset;
          int loc = xloc + img.width*yloc;
          loc = constrain(loc,0,img.pixels.length-1);
          rtotal += (red(img.pixels[loc]) * matrix[i][j]);
          gtotal += (green(img.pixels[loc]) * matrix[i][j]);
          btotal += (blue(img.pixels[loc]) * matrix[i][j]);
        }
      }
      rtotal = constrain(rtotal,0,250);
      gtotal = constrain(gtotal,0,250);
      btotal = constrain(btotal,0,250);
      return color(rtotal,gtotal,btotal);
    }
    
    

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    about this sketch

    This sketch is running as Java applet, exported from Processing.

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    TseCheukYin

    sexy girl

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