Lively Dots
Lively dots is an interactive work that is based on camera input. Movement is detected to control an image, the image is not shown until something moves.
Interaction
- mouse pressed can pause the video
- key: s stands for save the picture
- key: a stands for add the number of the balls
- key: m stands for minus the number of the balls
Camera
Use library
import JMyron.*;
JMyron m; //a camera object
Camera Settings
void drawCamera() {
//get the normal image of the camera
int[] img = m.differenceImage();
loadPixels();
//loop through all the pixels
for (int i=0;i<width*height;i++) {
//draw each pixel to the screen
pixels[i] = img[i];
}
updatePixels();
}
Dots
Initial value
float objx = 320;
float objy = 240;
float objdestx = 320;
float objdesty = 240;
int numBalls = 25600;
float maxVelocity = 16;
minAccel = 0.8;
maxAccel = 1.8;
Location of the dots
if (!(avX==0&&avY==0)&¢ers.length>0) {
objdestx = avX;
objdesty = avY;
}
objx += (objdestx-objx)/10.0f;
objy += (objdesty-objy)/10.0f;
for (int i=0; i<numBalls; i++) {
ball[i].seek(new PVector(objx, objy));
ball[i].render();
PROGRAM
File:Processing einfuehrung jin.zip