Processing 入门教程（四）kinect 人影互动 （2）

接着上一篇博文，先完善一下，后面一边学习一边完善，今天做到的效果图如下：

 

代码如下：

import KinectPV2.*;
KinectPV2 kinect2;
PImage img;
ParticleSystem ps;
Particle p ;
int offset;
float minThresh = 518;
float maxThresh = 1184;
int d;
int particleDensity;
void setup() {
  size(512, 414, P3D);
  frameRate(60);
  kinect2 = new KinectPV2(this);

  kinect2 = new KinectPV2(this);
  kinect2.enableDepthImg(true);
  img = createImage(kinect2.getDepthImage().width, kinect2.getDepthImage().height, RGB);
  println(img.width, img.height);
  kinect2.init();
  ps = new ParticleSystem();


  particleDensity =50;
}

void draw() {
  background(255);
  img.loadPixels();

  //minThresh = map(mouseX,0,width,0,4500);  
  //maxThresh = map(mouseY,0,height,0,4500);
  //println(minThresh, maxThresh);
  int[] depth = kinect2.getRawDepthData();

  float sumX = 0;
  float sumY = 0;
  float totalPixels = 0;
  // image(img,0,0);
  for (int x = 0; x < img.width; x++) {
    for (int y = 0; y < img.height; y ++) {
      offset = x + y*img.width;
      d = depth[offset];
      if (d> minThresh && d< maxThresh&& offset%100==0) {
        //int r =int(random(0, 255)) ;
        //int g =int(random(0, 255));
        //int b =int(random(0, 255));
        // img.pixels[offset] = color(r, g, b);
       // img.pixels[offset] = color(255, 0, 150); 
       
        ps.addParticle(new PVector(x, y));
        ps.run();
        
        //ellipse(x,y,2,2);

        sumX += x;
        sumY += y;
        totalPixels ++;
      } else {
        img.pixels[offset] = color(255);
      }
    }
  }

  img.updatePixels();
  //image(img, 0, 0);
  float avgX = sumX /totalPixels;
  float avgY = sumY / totalPixels;
  fill(150, 0, 255);
  ellipse(avgX, avgY, 64, 64);
}
class Particle {
  PVector location;
  PVector velocity;
  PVector acceleration;
 
  float lifespan;
  Particle(PVector l) {
    // The acceleration
    acceleration = new PVector(0, 0);
    // circel's x and y ==> range
    velocity = new PVector(0,0);
    // apawn's position
    location = l.copy();
    // the circle life time
    lifespan = 255.0;
  }
  void run() {
    update();
    display();
  }
  void update() {
    velocity.add(acceleration);
    location.add(velocity);
    lifespan-=9.0;
  }
 
  boolean isDead() {
    if (lifespan <= 0) {
      return true;
    } else {
      return false;
    }
  }
  void display() {
    // border
   stroke(0, lifespan);
    // border's weight
   // strokeWeight(0);
   //noFill();
    float r = random(0,255);
    float g = random(0,255);
    float b = random(0,255);
    // random the circle's color
    fill(r,g,b);
    // draw circle

   noStroke();
    ellipse(location.x, location.y,5, 5);
  }
}// A class to describe a group of Particles
// An ArrayList is used to manage the list of Particles 
 
class ParticleSystem {
  ArrayList particles;
  PVector origin;
 
  ParticleSystem() {
    particles = new ArrayList();
  }
 
  void addParticle(PVector position) {
    origin = position.copy();
    particles.add(new Particle(origin));
  }
 
  void run() {
    for (int i = particles.size()-1; i >= 0; i--) {
      Particle p = particles.get(i);
      p.run();
      if (p.isDead()) {
        particles.remove(i);
      }
    }
  }
}