Cacher is the code snippet organizer for pro developers

// Better OBJ loading


PShape objShape, triShape, quadShape;

void setup() {
  size(720, 360, P3D);
  // Load the obj model normally
  objShape = loadShape("heartDecim.obj");
  
  // Make a PShape with the all the faces with three vertices
  triShape = createShapeTri(objShape);
  // Make a PShape with the all the faces with four vertices
  quadShape = createShapeQuad(objShape);
}

public void draw() {
  background(255);

  translate(width/2, height/2, 0);
  scale(20);
  rotateX(PI);
  rotateY(mouseX/100.0);
  shape(triShape);
  shape(quadShape);
  //shape(objShape);
  
  lights();
  println(frameRate);
}

PShape createShapeTri(PShape r) {
  PImage tex = loadImage("HeartC.JPG");
  PShape s = createShape();
  s.beginShape(TRIANGLES);
  s.noStroke();
  s.texture(tex);
  s.textureMode(NORMAL);
  for (int i=100; i<r.getChildCount (); i++) {
    if (r.getChild(i).getVertexCount() ==3) {
      for (int j=0; j<r.getChild (i).getVertexCount(); j++) {
        PVector p = r.getChild(i).getVertex(j);
        PVector n = r.getChild(i).getNormal(j);
        float u = r.getChild(i).getTextureU(j);
        float v = r.getChild(i).getTextureV(j);
        s.normal(n.x, n.y, n.z);
        s.vertex(p.x, p.y, p.z, u, v);
      }
    }
  }
  s.endShape();
  return s;
}

PShape createShapeQuad(PShape r) {
  PImage tex = loadImage("HeartC.JPG");
  PShape s = createShape();
  s.beginShape(QUADS);
  s.noStroke();
  s.texture(tex);
  s.textureMode(NORMAL);
  for (int i=100; i<r.getChildCount (); i++) {
    if (r.getChild(i).getVertexCount() ==4) {
      for (int j=0; j<r.getChild (i).getVertexCount(); j++) {
        PVector p = r.getChild(i).getVertex(j);
        PVector n = r.getChild(i).getNormal(j);
        float u = r.getChild(i).getTextureU(j);
        float v = r.getChild(i).getTextureV(j);
        s.normal(n.x, n.y, n.z);
        s.vertex(p.x, p.y, p.z, u, v);
      }
    }
  }
  s.endShape();
  return s;
}

_