/**
 *     DOUBLE BLACK DIAMOND        DOUBLE BLACK DIAMOND
 *
 *         //\\   //\\                 //\\   //\\  
 *        ///\\\ ///\\\               ///\\\ ///\\\
 *        \\\/// \\\///               \\\/// \\\///
 *         \\//   \\//                 \\//   \\//
 *
 *        EXPERTS ONLY!!              EXPERTS ONLY!!
 *
 * This file implements the mapping functions needed to lay out the physical
 * cubes and the output ports on the panda board. It should only be modified
 * when physical changes or tuning is being done to the structure.
 */

static final float SPACING = 27;
static final float RISER = 13.5;
static final float FLOOR = 0;

/**
 * Definitions of tower positions. This is all that should need
 * to be modified. Distances are measured from the left-most cube.
 * The first value is the offset moving NE (towards back-right).
 * The second value is the offset moving NW (negative comes forward-right).
 */
static final float[][] TOWER_CONFIG = new float[][] {
  new float[] { 0, 0, RISER, 4 },
  new float[] { 25, -10, RISER, 4 },
  new float[] { 50, -22.5, FLOOR, 5 },
  new float[] { 17.25, -35.5, FLOOR, 6 },
  new float[] { 43.25, -51.5, RISER, 6 },
  new float[] { 69.25, -56, FLOOR, 6 },
  new float[] { 12.75, -62.5, RISER, 4 },
  new float[] { 38.75, -78.5, FLOOR, 5 },
  new float[] { 65.75, -83, RISER, 5 },  

};

public Model buildModel() {

  List<Tower> towers = new ArrayList<Tower>();
  Cube[] cubes = new Cube[200];
  int cubeIndex = 1;

  float rt2 = sqrt(2);
  float x, y, z, xd, zd, num;
  for (float[] tc : TOWER_CONFIG) {
    x = -tc[1];
    z = tc[0]; 
    y = tc[2];
    num = tc[3];
    if (z < x) {
      zd = -(x-z)/rt2;
      xd = z*rt2 - zd;
    } else {
      zd = (z-x)/rt2;
      xd = z*rt2 - zd;
    }
    List<Cube> tower = new ArrayList<Cube>();
    for (int n = 0; n < num; ++n) {
      Cube cube = new Cube(xd + 24, y, zd + 84, 0, -45, 0);
      tower.add(cube);
      cubes[cubeIndex++] = cube;
      y += SPACING;
    }
    towers.add(new Tower(tower));
  }

  return new Model(towers, cubes);
}