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Drawing Wave with Color detect through Webcam

[1 Reply]
- 30-Apr-2012 07:41 PM
- Forum: Core Library Questions
Hi, I have found this nice code where many circles follow the mouse. I have tried to connect this to a color detect program I found on learning processing.org but I can't figure out how to integrate the two. Is there Here is the code for the wave
1. class Wave {
3. PVector loc;
7. int farOut;
10. color strokeColor;
12. Wave() {
14. loc = new PVector();
17. loc.x = mouseX;
18. loc.y = mouseY;
21. farOut = 1;
24. strokeColor = color(random(255), random(255), random(255));
25. }
27. void update() {
29. farOut += 1;
30. }
32. void display() {
34. stroke(strokeColor);
37. ellipse(loc.x, loc.y, farOut, farOut);
38. }
40. boolean dead() {
42. if(farOut > 50) {
44. return true;
45. }
47. return false;
48. }
49. }
50. //Create the ArrayList of Waves
51. ArrayList<Wave> waves = new ArrayList<Wave>();
52. void setup() {
53. size(400, 400);
56. ellipseMode(CENTER);
57. }
58. void draw() {
59. //Clear the background with 21 opacity
60. background(255, 255, 255, 21);
62. {
63. //Create a new Wave
64. Wave w = new Wave();
65. //and Add it to the ArrayList
66. waves.add(w);
67. }
69. //Run through all the waves
70. for(int i = 0; i < waves.size(); i ++) {
72. waves.get(i).update();
73. waves.get(i).display();
75. if(waves.get(i).dead()) {
76. waves.remove(i);
77. }
78. }
79. }
Also here is the color detect I attempted to modify to integrate the wave
2. import processing.video.*;
6. // Variable for capture device
7. Capture video;
9. // A variable for the color we are searching for.
10. color trackColor;
12. // wave variable
13. Wave wave;
15. void setup() {
16. size(400,400);
17. video = new Capture(this,width,height,15);
18. // Start off tracking for red
19. trackColor = color(255,0,0);
20. smooth();
22. // Initialize the snake
23. wave = new wave(50);
25. }
27. void draw() {
28. // Capture and display the video
29. if (video.available()) {
30. video.read();
31. }
33. video.loadPixels();
34. image(video,0,0);
36. // Before we begin searching, the "world record" for closest color is set to a high number that is easy for the first pixel to beat.
37. float worldRecord = 500;
39. // XY coordinate of closest color
40. int closestX = 0;
41. int closestY = 0;
43. // Begin loop to walk through every pixel
44. for (int x = 0; x < video.width; x ++ ) {
45. for (int y = 0; y < video.height; y ++ ) {
46. int loc = x + y*video.width;
47. // What is current color
48. color currentColor = video.pixels[loc];
49. float r1 = red(currentColor);
50. float g1 = green(currentColor);
51. float b1 = blue(currentColor);
52. float r2 = red(trackColor);
53. float g2 = green(trackColor);
54. float b2 = blue(trackColor);
56. // Using euclidean distance to compare colors
57. float d = dist(r1,g1,b1,r2,g2,b2); // We are using the dist( ) function to compare the current color with the color we are tracking.
59. // If current color is more similar to tracked color than
60. // closest color, save current location and current difference
61. if (d < worldRecord) {
62. worldRecord = d;
63. closestX = x;
64. closestY = y;
65. }
66. }
67. }
69. // We only consider the color found if its color distance is less than 10.
70. // This threshold of 10 is arbitrary and you can adjust this number depending on how accurate you require the tracking to be.
71. if (worldRecord < 10) {
72. // Update the snake's location
73. wave.update(closestX,closestY);
74. }
76. wave.display();
78. }
80. void mousePressed() {
81. // Save color where the mouse is clicked in trackColor variable
82. saveFrame("blah.tif");
83. int loc = mouseX + mouseY*video.width;
84. trackColor = video.pixels[loc];
86. }

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