Processing Forum
And this is the one that samples the color
/**
* Getting Started with Capture.
*
* Reading and displaying an image from an attached Capture device.
*/
import processing.video.*;
Capture cam;
void setup() {
size(640, 480, P2D);
String[] cameras = Capture.list();
if (cameras.length == 0) {
println("There are no cameras available for capture.");
exit();
} else {
println("Available cameras:");
for (int i = 0; i < cameras.length; i++) {
println(cameras[i]);
}
// The camera can be initialized directly using an element
// from the array returned by list():
cam = new Capture(this, cameras[0]);
cam.start();
}
}
void draw() {
if (cam.available() == true) {
cam.read();
}
image(cam, 0, 0);
// The following does the same, and is faster when just drawing the image
// without any additional resizing, transformations, or tint.
//set(0, 0, cam);
}
void keyPressed() {
if (key == ' ')
saveFrame("../pics/1.jpg");
}
/**I have saved the sketches in different folders of the same name of the sketch and the pictures are saved in one folder up from the sketches in a pics folder
* Pixel Array.
*
* Click and drag the mouse up and down to control the signal and
* press and hold any key to see the current pixel being read.
* This program sequentially reads the color of every pixel of an image
* and displays this color to fill the window.
*/
// The next line is needed if running in JavaScript Mode with Processing.js
/* @pjs preload="sea.jpg"; */
PImage img;
int direction = 0;
float signal;
void setup() {
size(640, 480);
noFill();
stroke(255);
frameRate(30);
}
void draw() {
img = loadImage("../pics/1.jpg");
redraw();
if (signal > img.width*img.height-1 || signal < 0) {
direction = direction * -1;
}
if (mousePressed) {
int mx = constrain(mouseX, 0, img.width-1);
int my = constrain(mouseY, 0, img.height-1);
signal = my*img.width + mx;
} else {
signal += 0.33*direction;
}
int sx = int(signal) % img.width;
int sy = int(signal) / img.width;
if (keyPressed) {
set(0, 0, img); // fast way to draw an image
point(sx, sy);
rect(sx - 5, sy - 5, 10, 10);
} else {
color c = img.get(sx, sy);
background(c);
}
}