Package se.llbit.chunky.model

Source Code of se.llbit.chunky.model.GlassPaneModel

/* Copyright (c) 2012 Jesper Öqvist <jesper@llbit.se>
*
* This file is part of Chunky.
*
* Chunky is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Chunky is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Chunky.  If not, see <http://www.gnu.org/licenses/>.
*/
package se.llbit.chunky.model;

import se.llbit.chunky.resources.Texture;
import se.llbit.chunky.world.BlockData;
import se.llbit.math.Quad;
import se.llbit.math.Ray;
import se.llbit.math.Transform;
import se.llbit.math.Vector3d;
import se.llbit.math.Vector4d;

@SuppressWarnings("javadoc")
public class GlassPaneModel {

  private static Quad cap =
      new Quad(new Vector3d(.5625, 1, .5), new Vector3d(.4375, 1, .5),
        new Vector3d(.4375, 0, .5), new Vector4d(.5625, .4375, 1, 0));

  private static Quad[][] connector = {
    // front
    {
      // left
      new Quad(new Vector3d(.4375, 1, .5), new Vector3d(.4375, 1, 0),
          new Vector3d(.4375, 0, .5), new Vector4d(.5, 0, 1, 0)),

      // right
      new Quad(new Vector3d(.5625, 1, 0), new Vector3d(.5625, 1, .5),
          new Vector3d(.5625, 0, 0), new Vector4d(0, .5, 1, 0)),

      // top
      new Quad(new Vector3d(.5625, 1, 0), new Vector3d(.4375, 1, 0),
          new Vector3d(.5625, 1, .5), new Vector4d(.5625, .4375, 0, .5)),

      // bottom
      new Quad(new Vector3d(.4375, 0, 0), new Vector3d(.5625, 0, 0),
          new Vector3d(.4375, 0, .5), new Vector4d(.4375, .5625, 0, .5)),

    },
    // back
    {
      // left
      new Quad(new Vector3d(.4375, 1, 1), new Vector3d(.4375, 1, .5),
          new Vector3d(.4375, 0, 1), new Vector4d(1, .5, 1, 0)),

      // right
      new Quad(new Vector3d(.5625, 1, .5), new Vector3d(.5625, 1, 1),
          new Vector3d(.5625, 0, .5), new Vector4d(.5, 1, 1, 0)),

      // top
      new Quad(new Vector3d(.5625, 1, .5), new Vector3d(.4375, 1, .5),
          new Vector3d(.5625, 1, 1), new Vector4d(.5625, .4375, .5, 1)),

      // bottom
      new Quad(new Vector3d(.4375, 0, .5), new Vector3d(.5625, 0, .5),
          new Vector3d(.4375, 0, 1), new Vector4d(.4375, .5625, .5, 1)),
    },
  };

  private static Quad[][] panes = new Quad[4][];
  private static Quad[] rotCap = new Quad[4];

  static {
    panes[0] = connector[0];
    panes[1] = connector[1];
    for (int j = 2; j < 4; ++j) {
      panes[j] = Model.rotateY(connector[j-2]);
    }
    rotCap[0] = cap;
    rotCap[2] = new Quad(rotCap[0], Transform.NONE.rotateY());
    rotCap[1] = new Quad(rotCap[2], Transform.NONE.rotateY());
    rotCap[3] = new Quad(rotCap[1], Transform.NONE.rotateY());
  }

  public static boolean intersect(Ray ray, Texture texture, Texture sideTexture) {
    int metadata = 0xF & (ray.currentMaterial >> BlockData.GLASS_PANE_OFFSET);
    boolean hit = false;
    ray.t = Double.POSITIVE_INFINITY;
    for (int i = 0; i < 4; ++i) {
      if (metadata == 0 || ((metadata & (1 << i)) != 0)) {
        for (int j = 0; j < panes[i].length; ++j) {
          Quad quad = panes[i][j];
          if (quad.intersect(ray)) {
            float[] color;
            if (j < 2)
              color = texture.getColor(ray.u, ray.v);
            else
              color = sideTexture.getColor(ray.u, ray.v);
            if (color[3] > Ray.EPSILON) {
              ray.color.set(color);
              ray.n.set(quad.n);
              ray.t = ray.tNear;
              hit = true;
            }
          }
        }
        if (metadata == (1 << i)) {
          if (rotCap[i].intersect(ray)) {
            sideTexture.getColor(ray);
            if (ray.color.w > 0) {
              ray.n.set(rotCap[i].n);
              ray.t = ray.tNear;
              hit = true;
            }
          }
        }
      }
    }
    if (hit) {
      ray.distance += ray.t;
      ray.x.scaleAdd(ray.t, ray.d, ray.x);
    }
    return hit;
  }
}
TOP

Related Classes of se.llbit.chunky.model.GlassPaneModel

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.