// .OBJ Loader transformation
// by SAITO <http://users.design.ucla.edu/~tatsuyas>
// Placing a virtual structure represented as mathematically
// three-dimensional object.
// OBJModel.getVertex() allows accessing to each vertex
// OBJModel.setVertex() allows transformation of a model

import saito.objloader.*;

OBJModel model;
OBJModel tmpmodel;

float rotX;
float rotY;

void setup()
{
  size(200, 200, P3D);
  framerate(30);
  model = new OBJModel(this);
  tmpmodel = new OBJModel(this);
  model.debugMode();
  model.load("dma.obj");
  tmpmodel.load("dma.obj");
  noStroke();
}

void draw()
{
  background(255);
  lights();
  pushMatrix();
  translate(width/2, height/2, 0);
  rotateX(rotY);
  rotateY(rotX);
  scale(10.0);
  
  // renders the temporary model
  tmpmodel.draw();
  popMatrix();
  
  animation();
}

// transformation parameter
float k = 0.0;

// transforms the orignal model shape and stores transformed shape 
// into temporary model storage
void animation(){


 for(int i = 0; i < model.getVertexsize(); i++){
    Vertex orgv = model.getVertex(i);
    Vertex tmpv = new Vertex();
    tmpv.vx = orgv.vx * (abs(sin(k+i*0.04)) * 0.3 + 1.0);
    tmpv.vy = orgv.vy * (abs(cos(k+i*0.04)) * 0.3 + 1.0);
    tmpv.vz = orgv.vz * (abs(cos(k/5.)) * 0.3 + 1.0);
    tmpmodel.setVertex(i, tmpv);
  }
  k+=0.1;
}


void mouseDragged()
{
  rotX += (mouseX - pmouseX) * 0.01;
  rotY -= (mouseY - pmouseY) * 0.01;
}