Elenyui: New page: //Dance in the Dark import processing.video.*; Capture video; PGraphics buffer; PImage img; int brightestX = 0; // X-coordinate of the brightest video pixel int brightestY = 0; // Y-coor...

2010-06-05T23:13:44Z

New page: //Dance in the Dark import processing.video.*; Capture video; PGraphics buffer; PImage img; int brightestX = 0; // X-coordinate of the brightest video pixel int brightestY = 0; // Y-coor...

New page

//Dance in the Dark

import processing.video.*;
Capture video;
PGraphics buffer;
PImage img;

int brightestX = 0; // X-coordinate of the brightest video pixel
int brightestY = 0; // Y-coordinate of the brightest video pixel
int lastX, lastY;

int currentFrame = 0;
PImage[] frames = new PImage[12];
int lastTime = 0;

void setup()
{
size(700, 500, P3D);
video = new Capture(this, width, height, 30);
noStroke();
smooth();
buffer = createGraphics(700, 500, P3D);

background(102);

for (int i = 0; i < frames.length; i++) {
frames[i] = get(); // Create a blank frame
}

}

void draw()
{
background(0);

int currentTime = millis();
if (currentTime > lastTime+30) {

lastTime = currentTime; //Setting the refresh rate of the recording
}

//replaces mousepressing line drawing
if (video.available()) {
int threshold = 1;
video.read();
image(video, 0, 0, width, height); // Draw the webcam video onto the screen

img=buffer.get();
image(buffer, 0, 0, 700, 500); // RDT: draw the offscreen buffer on top of the webcam video
nextFrame();

//filter(BLUR, 2);
float brightestValue = 0; // Brightness of the brightest video pixel
// Search for the brightest pixel: For each row of pixels in the video image and
// for each pixel in the yth row, compute each pixel's index in the video
video.loadPixels();
int index = 0;

lastX = brightestX;
lastY = brightestY;

for (int y = 0; y < video.height; y++) {
for (int x = 0; x < video.width; x++) {
// Get the color stored in the pixel
int pixelValue = video.pixels[index];
// Determine the brightness of the pixel
float pixelBrightness = brightness(pixelValue);
// If that value is brighter than any previous, then store the
// brightness of that pixel, as well as its (x,y) location
if (pixelBrightness > brightestValue) {
brightestValue = pixelBrightness;
brightestY = y;
brightestX = x;
}
index++;
}
}

//fill(255, 100, 50, 70);
if (brightestValue > threshold) { // If the test location is brighter than
noStroke();
//fill (255);
// the threshold set the fill to black

variableEllipse(lastX, lastY, brightestX, brightestY);
nextFrame();
}
else { // Otherwise,
noStroke();
//fill(255,0); // set the fill to random
variableEllipse(lastX, lastY, brightestX, brightestY);
nextFrame();
}

}

}

void nextFrame()
{
frames[currentFrame] = buffer.get(); // Get the display window
currentFrame++; // Increment to next frame
if (currentFrame >= frames.length) {
currentFrame = 0;
}
image(frames[currentFrame], 0, 0);
}

void variableEllipse(int x, int y, int px, int py)
{
float speed = abs(x-px) + abs(y-py);

stroke(speed);

// RDT: draw to the offscreen buffer
buffer.beginDraw();
buffer.noStroke();
buffer.fill(random(0,255), random(0,255), random(0,255), 160);
buffer.ellipse(px, py, speed/4, speed/4);
buffer.endDraw();

}

if mouseClicked(){
setup();
}

Dance in the Dark.pde - Revision history

Elenyui: New page: //Dance in the Dark import processing.video.*; Capture video; PGraphics buffer; PImage img; int brightestX = 0; // X-coordinate of the brightest video pixel int brightestY = 0; // Y-coor...