74 lines
1.8 KiB
Plaintext
74 lines
1.8 KiB
Plaintext
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/**
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* Mirror
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* by Daniel Shiffman.
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*
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* Each pixel from the video source is drawn as a rectangle with rotation based on brightness.
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*/
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import processing.video.*;
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// Size of each cell in the grid
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int cellSize = 20;
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// Number of columns and rows in our system
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int cols, rows;
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// Variable for capture device
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Capture video;
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void setup() {
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size(640, 480);
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frameRate(30);
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cols = width / cellSize;
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rows = height / cellSize;
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colorMode(RGB, 255, 255, 255, 100);
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// This the default video input, see the GettingStartedCapture
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// example if it creates an error
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video = new Capture(this, width, height);
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// Start capturing the images from the camera
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video.start();
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background(0);
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}
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void draw() {
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if (video.available()) {
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video.read();
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video.loadPixels();
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// Begin loop for columns
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for (int i = 0; i < cols; i++) {
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// Begin loop for rows
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for (int j = 0; j < rows; j++) {
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// Where are we, pixel-wise?
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int x = i*cellSize;
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int y = j*cellSize;
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int loc = (video.width - x - 1) + y*video.width; // Reversing x to mirror the image
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float r = red(video.pixels[loc]);
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float g = green(video.pixels[loc]);
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float b = blue(video.pixels[loc]);
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// Make a new color with an alpha component
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color c = color(r, g, b, 75);
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// Code for drawing a single rect
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// Using translate in order for rotation to work properly
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pushMatrix();
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translate(x+cellSize/2, y+cellSize/2);
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// Rotation formula based on brightness
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rotate((2 * PI * brightness(c) / 255.0));
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rectMode(CENTER);
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fill(c);
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noStroke();
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// Rects are larger than the cell for some overlap
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rect(0, 0, cellSize+6, cellSize+6);
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popMatrix();
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}
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}
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}
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}
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