第四週上課作業

// bRigid provides classes for an easier handling of jBullet in Processing. bRigid is thought as a kind of Processing port for the bullet physics simulation library written in C++. 

// This library allows the interaction of rigid bodies in 3D. Geometry/ Shapes are build with Processing PShape Class, for convinient display and export (c) 2013 Daniel Köhler, daniel@lab-eds.org

//here: build a TriangleMesh and use it as "Terrain"

import javax.vecmath.Vector3f;

import processing.core.PApplet;

import peasy.*;

import bRigid.*;

import de.voidplus.leapmotion.*;

LeapMotion leap;

PeasyCam cam;

BPhysics physics;

BObject rigid;

BTerrain terrain;

public void setup() {

  size(1280, 720, P3D);

  frameRate(60);

  cam = new PeasyCam(this, 200);

  cam.pan(0, 50);

  cam.rotateX(.4f);

  physics = new BPhysics();

  physics.world.setGravity(new Vector3f(0, 40, 0));

  float height = 1.1f;

  //BTerrain(PApplet p, int tesselation, float height, int seed, Vector3f position, Vector3f scale) 

  terrain = new BTerrain(this, 110, height, 10, new Vector3f(), new Vector3f(2, 2, 2));

  physics.addBody(terrain);

  //create the first rigidBody as Sphere

  rigid = new BBox(this, 5, 1.0f, 10.0f, 1.0f);

  leap = new LeapMotion(this);

}

public void draw() {

  background(255);

  lights();

  rotateY(frameCount*.002f);

  for (Hand hand : leap.getHands()) {

    PVector hand_position    = hand.getPosition();

    if (frameCount%2==0) {

      Vector3f pos = new Vector3f(hand_position.x/5-90, -30, hand_position.y/5-90);

      //reuse the rigidBody of the sphere for performance resons

      BObject r = new BObject(this, 5, rigid, pos, true);

      physics.addBody(r);

    }

  }

  physics.update();

  terrain.display();

  for (int i =1;i<physics.rigidBodies.size();i++) {

    BObject b = (BObject) physics.rigidBodies.get(i);

    b.display(50, 50, 50);

  }

}