BImage swap,store;
slider [] s;
int count = 1;
int mode = 1;
void setup(){
swap = loadImage("a.gif");
store = swap.copy();
size(681,510);
//size(swap.width,swap.height);
s = new slider[10000];
for (int i = 0; i < s.length; i++){
s[i] = new slider(int(random(swap.width)),int(random(swap.height)));
}
}
void loop(){
background(swap);
for (int i = 0; i < s.length; i++){
s[i].slide();
}
}
void mousePressed(){
swap = store.copy();
mode = (mode+1)%2;
}
void keyPressed(){
save("slide.tif");
println("save count "+count++);
}
class slider{
int x,y,d;
slider(int x, int y){
this.x = x;
this.y = y;
}
void slide(){
int lastx = x;
int lasty = y;
int d = int(random(4));
switch(d){
case 0:
x++; break;
case 1:
y++; break;
case 2:
x--; break;
case 3:
y--; break;
}
/*
//wrap around
if (x > swap.width-1){
x = 0;
}
if (y > swap.height-1){
y = 0;
}
if (x < 0){
x = width-1;
}
if (y < 0){
y = height-1;
}
*/
///*
if (x > swap.width-1){
x = width-1;
}
if (y > swap.height-1){
y = height-1;
}
if (x < 0){
x = 0;
}
if (y < 0){
y = 0;
}
//*/
color a = swap.pixels[x + y * swap.width];
color b = swap.pixels[lastx + lasty * swap.width];
switch(mode){
case 0:
swap.pixels[x + y * swap.width] = b;
swap.pixels[lastx + lasty * swap.width]= a;
break;
case 1:
swap.pixels[x + y * swap.width] = mean(a,b);
swap.pixels[lastx + lasty * swap.width]= mean(a,b);
break;
}
}
}
color mean(color c1, color c2){
float r = (red(c1)+red(c2))/2;
float g = (green(c1)+green(c2))/2;
float b = (blue(c1)+blue(c2))/2;
return color (r,g,b);
}