We are about to switch to a new forum software. Until then we have removed the registration on this forum.
I want achive that with everz click on colour, there will appear and staz ellipse, capturing the colour/not to disappear. Is there some easier way than to create separate drawing loops for different ellipses? Just to say something like capture and stay, even if I click again somewhere else? (example from Levin and Shiffman)
import processing.video.*;
Capture video;
// A variable for the color we are searching for.
color trackColor;
void setup() {
size(640, 480);
video = new Capture(this, width, height);
video.start();
// Start off tracking black
trackColor = color(0);
}
void captureEvent(Capture video) {
// Read image from the camera
video.read();
}
void draw() {
video.loadPixels();
image(video, 0, 0);
//more higher more arger chance to find the colour
float worldRecord = 500;
// seek for the closest color
int closestX = 0;
int closestY = 0;
// search every pixel
for (int x = 0; x < video.width; x ++ ) {
for (int y = 0; y < video.height; y ++ ) {
int loc = x + y*video.width;
// define and showWhat is current color
color currentColor = video.pixels[loc];
float r1 = red(currentColor);
float g1 = green(currentColor);
float b1 = blue(currentColor);
float r2 = red(trackColor);
float g2 = green(trackColor);
float b2 = blue(trackColor);
// Using euclidean distance to compare colors
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.
// If current color is more similar to tracked color than
// closest color, save current location and current difference
if (d < worldRecord) {
worldRecord = d;
closestX = x;
closestY = y;
}
}
}
// trackcolour not more far than 20
if (worldRecord < 20) {
// Draw a circle at the tracked pixel
fill(trackColor);
strokeWeight(4.0);
noStroke();
ellipse(closestX, closestY, 60, 60);
}
}
void mousePressed() {
// store the colour from video and keep it tracked
int loc = mouseX + mouseY*video.width;
trackColor = video.pixels[loc];
}
Answers
are you referring to line numbers 62 to 68 ?
Yes. I wanted to create that everytime i click and create ellipse which is tracking the pixel colour, will stay there, tracking and I will with every click add a new one. thanks that you wrote.
Similar/relevant: https://forum.processing.org/two/discussion/comment/114336/#Comment_114336
Some code:
Repalce line 67 with:
At the end of draw():
Kf