// Demo nesting for csc220 assn4 NestingCSC220Fall2023PShapeWithRotation
// NestingCSC220Fall2023PShape adds rotated framed images in 3 dimensions

// From Assignment 4 STUDENT B:
  // STUDENT B 50%: Each student creates their own shape according to handout spec.
  // You must use 2D shapes only, with copies rotated in X, Y, and Z directions, and
  // nested to the degree given by global recursionDepth+1.
  
PImage STUDENTIMAGE = null ;
PShape STUDENTSHAPE ;
int imgwidth, imgheight ;
float aspectRatio ;
int imageSize = 400, frameSize = 410 ;

void setup() {
  size(1100, 900, P3D);
  frameRate(60);
  STUDENTIMAGE = loadImage("HikerApr2023.jpg");
  imgwidth = STUDENTIMAGE.width ;
  imgheight = STUDENTIMAGE.height ;
  aspectRatio = float(imgheight) / imgwidth ;
  STUDENTSHAPE = createShape(RECT, 0, 0, imageSize, aspectRatio * imageSize);
  STUDENTSHAPE.setTexture(STUDENTIMAGE);
  // OPTIONAL STUDENTIMAGE.resize(300, round(aspectRatio * 300));
  // aspectRatio = 1.0 ;
  background(255);
  imageMode(CENTER);
  shapeMode(CENTER);
}

void draw() {
  //camera(width/2.0, height/10.0, (height/2.0) / tan(PI*30.0 / 180.0),
  //  width/2.0, height/2.0, 0, 0, 1, 0);
  //camera(width/2.0, height/2.0, (height/2.0) / tan(PI*30.0 / 180.0),
  //  width/2.0, height/2.0, 0, 0, 1, 0);
  camera(width/6.0, height/4.0, (height/2.0) / tan(PI*30.0 / 180.0),
    width/2.0, height/2.0, 0, 0, 1, 0);
  //camera(width/10.0, height/2.0, (height/2.0) / tan(PI*30.0 / 180.0),
  //  width/2.0, height/2.0, 0, 0, 1, 0);
  int recursionDepth = 2 ;
  ortho();
  push();
  translate(width/2, height/2);
  float scaledown = 1.0 ;
  // NOTE: If you plot 2 2D shapes of different colors in the same Z plane, their pixels will
  // munge together. The later one plotted will NOT cover the earlier ones. 
  // Therefore, as you nest deeper to plot smaller shapes, you could plot 2 of each offset at
  // increased z and -z distances from the outermost one. I just stuck with the same color instead
  // of plotting multiple copies. However, I plotted 2 copies of the STUDENTSHAPE,
  for (int depth = 0 ; depth <= recursionDepth ; depth = depth + 1) {
    push();
    scale(scaledown);
    fill(0);
    stroke(0);
    rectMode(CENTER);
    push();
    translate(0, 0, depth+2);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    translate(0, 0, depth-4);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    pop();
    push();
    rotateY(radians(90)); // plot another rotated around Y axis
    translate(0, 0, depth+2);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    translate(0, 0, depth-4);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    pop();
    push();
    rotateX(radians(90)); // plot another rotated around X axis
    translate(0, 0, depth+2);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    translate(0, 0, depth-4);
    shape(STUDENTSHAPE, 0, 0, imageSize, aspectRatio * imageSize);
    pop();
    scaledown *= 0.9 ;
    pop();
  }
  pop();
}