restoring original image after altering pixels
in
Programming Questions
•
1 year ago
I'm learning how to play with pixels and found a code that simulates gravity and makes the pixels of an image fall like snow
PImage
snowflake;
int num = 800; //number of particles |
int pixWidth = 1; //can also try different numbers above 1 |
Pix[][] pix = new Pix[num][num]; //creating 2D array |
void setup() { |
snowflake = loadImage("snowflake.jpg"); |
snowflake.loadPixels(); |
size(509, 339, P2D); //using P2D because otherwise it's too slow |
for (int i=0; i<num; i++) { |
for (int j=0; j<num; j++) { |
pix[i][j] = new Pix(i, j, random(-1, 1), random(1, 2), i, j, random(0.1, 0.5), pixWidth); //random values control how far pixels will move in all directions |
} |
} |
} |
void draw() { |
//background(0); //make active for a different effect of a plain black screen rather than streaks |
for(int i=0; i<num; i++) { |
for(int j=0; j<num; j++) { |
color pixel = snowflake.get(i, j); |
fill(pixel, 255); |
pix[i][j].display(); |
} |
if(mousePressed==true) { //click and hold mouse to watch animation |
for(int j=0; j<num; j++) { |
color pixel = snowflake.get(i, j); |
pix[i][j].move(); |
} |
} |
} |
} |
class Pix { //gravity code |
float x, y; |
float nx, ny; |
float ox, oy; |
float gravity; |
int w; |
int del=16; |
Pix(float _x, float _y, float _nx, float _ny, float _ox, float _oy, float _gravity, int _w) { |
x = _x; |
y = _y; |
nx = _nx; |
ny = _ny; |
ox = _ox; |
oy = _oy; |
gravity = _gravity; |
w = _w; |
} |
void display() { |
noStroke(); |
rectMode(CENTER); |
rect(x, y, w, w); |
} |
void move() { |
x = x+nx+gravity; |
y = y+ny+gravity; |
if(y>height || y<0) { |
ny = ny * -0.4; |
} |
if(x>width || x<0) { |
nx = nx * -0.4; |
} |
} |
}
would there be any way to use restore the pixels to their original place, maybe by pressing a button or when you let go of the mouse button it automatically restores?
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