März 5, 2012

The pixels of the duck are modified by moving the mouse around in the vertical as well as the horizontal axis.

PImage img;
int res =5;
int res2 = res;
int rectSize = 4;
boolean flag = true;

long timeStamp = 0;
boolean onOff = false;
int pause = 2;

void setup() {

rectMode(CENTER);
 size(640, 480, P3D);
 img = loadImage("ducks.jpg");
 noStroke();
 smooth();
}
void draw() {

 background(0);
 loadPixels();
 img.loadPixels();

res = 1+(int)map(mouseX, 0, width, 1, 80);
 res2 = (int)map(mouseY, 0, height, 1, 80);

if (millis() - timeStamp > pause) {

// We must also call loadPixels() on the PImage since we are going to read its pixels. img.loadPixels();
 for (int x = 0; x < img.width; x+=res2) {
 for (int y = 0; y < img.height; y+=res2) {

// Calculate the 1D pixel location
 int loc = x + y*img.width;

// Get the R,G,B values from image
 float b = brightness(img.pixels[loc]);
 fill(b);

//drawRect(x,y);
 if (flag)
 rectSize++;
 if (!flag)
 rectSize--;
 if (rectSize>=res)
 flag = false;
 if (rectSize<=0)
 flag = true;
 ellipse(x, y, rectSize, rectSize);
 img.pixels[loc] = color(b);
 }
 }
 //img.updatePixels();
 // Display the destination
 //image(img,0,0);
 timeStamp = millis();
 }
}
void drawRect(int x, int y) {
 if (millis() - timeStamp > pause) {
 rect(x, y, rectSize, rectSize);
 timeStamp = millis();
 rectSize++;
 }
 if (rectSize>=res)
 rectSize = 1;
}