/* 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.ColorUtil;
import se.llbit.math.Quad;
import se.llbit.math.Ray;
import se.llbit.math.Vector3;
import se.llbit.math.Vector4;
public class RedstoneWireModel {
private static final Quad[] quads = {
// 0000 no connection
new Quad(new Vector3(11 / 16., 0, 5 / 16.), new Vector3(5 / 16., 0, 5 / 16.),
new Vector3(11 / 16., 0, 11 / 16.), new Vector4(11 / 16., 5 / 16., 11 / 16., 5 / 16.)),
// 0001 east
new Quad(new Vector3(1, 0, 0), new Vector3(0, 0, 0), new Vector3(1, 0, 1),
new Vector4(1, 0, 1, 0)),
// 0010 west
new Quad(new Vector3(1, 0, 0), new Vector3(0, 0, 0), new Vector3(1, 0, 1),
new Vector4(1, 0, 1, 0)),
// 0011 east west
new Quad(new Vector3(1, 0, 0), new Vector3(0, 0, 0), new Vector3(1, 0, 1),
new Vector4(1, 0, 1, 0)),
// 0100 north
new Quad(new Vector3(1, 0, 1), new Vector3(1, 0, 0), new Vector3(0, 0, 1),
new Vector4(1, 0, 1, 0)),
// 0101 north east
new Quad(new Vector3(1, 0, 0), new Vector3(5 / 16., 0, 0), new Vector3(1, 0, 11 / 16.),
new Vector4(1, 5 / 16., 1, 5 / 16.)),
// 0110 north west
new Quad(new Vector3(11 / 16., 0, 0), new Vector3(0, 0, 0),
new Vector3(11 / 16., 0, 11 / 16.), new Vector4(11 / 16., 0, 1, 5 / 16.)),
// 0111 north east west
new Quad(new Vector3(1, 0, 0), new Vector3(0, 0, 0), new Vector3(1, 0, 11 / 16.),
new Vector4(1, 0 / 16., 1, 5 / 16.)),
// 1000 south
new Quad(new Vector3(1, 0, 1), new Vector3(1, 0, 0), new Vector3(0, 0, 1),
new Vector4(1, 0, 1, 0)),
// 1001 south east
new Quad(new Vector3(1, 0, 5 / 16.), new Vector3(5 / 16., 0, 5 / 16.),
new Vector3(1, 0, 1), new Vector4(1, 5 / 16., 11 / 16., 0)),
// 1010 south west
new Quad(new Vector3(11 / 16., 0, 5 / 16.), new Vector3(0, 0, 5 / 16.),
new Vector3(11 / 16., 0, 1), new Vector4(11 / 16., 0, 11 / 16., 0)),
// 1011 south east west
new Quad(new Vector3(16 / 16., 0, 5 / 16.), new Vector3(0 / 16., 0, 5 / 16.),
new Vector3(16 / 16., 0, 1), new Vector4(16 / 16., 0 / 16., 11 / 16., 0)),
// 1100 north south
new Quad(new Vector3(1, 0, 1), new Vector3(1, 0, 0), new Vector3(0, 0, 1),
new Vector4(1, 0, 1, 0)),
// 1101 north south east
new Quad(new Vector3(1, 0, 0), new Vector3(5 / 16., 0, 0), new Vector3(1, 0, 1),
new Vector4(1, 5 / 16., 1, 0)),
// 1110 north south west
new Quad(new Vector3(11 / 16., 0, 0), new Vector3(0, 0, 0), new Vector3(11 / 16., 0, 1),
new Vector4(11 / 16., 0, 1, 0)),
// 1111 north south east west
new Quad(new Vector3(1, 0, 0), new Vector3(0, 0, 0), new Vector3(1, 0, 1),
new Vector4(1, 0, 1, 0))
};
private static final Quad eastSide =
new Quad(new Vector3(1, 1, 0), new Vector3(1, 0, 0), new Vector3(1, 1, 1),
new Vector4(1, 0, 1, 0));
private static final Quad westSide =
new Quad(new Vector3(0, 1, 1), new Vector3(0, 0, 1), new Vector3(0, 1, 0),
new Vector4(1, 0, 1, 0));
private static final Quad northSide =
new Quad(new Vector3(0, 1, 0), new Vector3(0, 0, 0), new Vector3(1, 1, 0),
new Vector4(1, 0, 1, 0));
private static final Quad southSide =
new Quad(new Vector3(1, 1, 1), new Vector3(1, 0, 1), new Vector3(0, 1, 1),
new Vector4(1, 0, 1, 0));
private static final Texture[] tex = {
Texture.redstoneWireCross, Texture.redstoneWire, Texture.redstoneWire, Texture.redstoneWire,
Texture.redstoneWire, Texture.redstoneWireCross, Texture.redstoneWireCross,
Texture.redstoneWireCross, Texture.redstoneWire, Texture.redstoneWireCross,
Texture.redstoneWireCross, Texture.redstoneWireCross, Texture.redstoneWire,
Texture.redstoneWireCross, Texture.redstoneWireCross, Texture.redstoneWireCross
};
private static final float[][] wireColor = new float[16][3];
static {
float[] color0 = new float[3];
float[] color1 = new float[3];
ColorUtil.getRGBComponents(0x4D0000, color0);
ColorUtil.toLinear(color0);
ColorUtil.getRGBComponents(0xFD3100, color1);
ColorUtil.toLinear(color1);
for (int i = 0; i < 16; ++i) {
wireColor[i][0] = color0[0] + (i / 15.f) * (color1[0] - color0[0]);
wireColor[i][1] = color0[1] + (i / 15.f) * (color1[1] - color0[1]);
wireColor[i][2] = color0[2] + (i / 15.f) * (color1[2] - color0[2]);
}
}
public static boolean intersect(Ray ray) {
int data = ray.getCurrentData();
boolean hit = false;
int power = ray.getBlockData();
int connection = 0xF & (data >> BlockData.RSW_EAST_CONNECTION);
ray.t = Double.POSITIVE_INFINITY;
Quad quad = quads[connection];
if (quad.intersect(ray)) {
float[] color = tex[connection].getColor(ray.u, ray.v);
if (color[3] > Ray.EPSILON) {
ray.color.x = color[0] * wireColor[power][0];
ray.color.y = color[1] * wireColor[power][1];
ray.color.z = color[2] * wireColor[power][2];
ray.color.w = color[3];
ray.n.set(quad.n);
ray.t = ray.tNext;
hit = true;
}
}
if ((data & (1 << BlockData.RSW_EAST_SIDE)) != 0) {
if (eastSide.intersect(ray)) {
float[] color = Texture.redstoneWire.getColor(ray.u, ray.v);
if (color[3] > Ray.EPSILON) {
ray.color.x = color[0] * wireColor[power][0];
ray.color.y = color[1] * wireColor[power][1];
ray.color.z = color[2] * wireColor[power][2];
ray.color.w = color[3];
ray.n.set(eastSide.n);
ray.t = ray.tNext;
hit = true;
}
}
}
if ((data & (1 << BlockData.RSW_WEST_SIDE)) != 0) {
if (westSide.intersect(ray)) {
float[] color = Texture.redstoneWire.getColor(ray.u, ray.v);
if (color[3] > Ray.EPSILON) {
ray.color.x = color[0] * wireColor[power][0];
ray.color.y = color[1] * wireColor[power][1];
ray.color.z = color[2] * wireColor[power][2];
ray.color.w = color[3];
ray.n.set(westSide.n);
ray.t = ray.tNext;
hit = true;
}
}
}
if ((data & (1 << BlockData.RSW_NORTH_SIDE)) != 0) {
if (northSide.intersect(ray)) {
float[] color = Texture.redstoneWire.getColor(ray.u, ray.v);
if (color[3] > Ray.EPSILON) {
ray.color.x = color[0] * wireColor[power][0];
ray.color.y = color[1] * wireColor[power][1];
ray.color.z = color[2] * wireColor[power][2];
ray.color.w = color[3];
ray.n.set(northSide.n);
ray.t = ray.tNext;
hit = true;
}
}
}
if ((data & (1 << BlockData.RSW_SOUTH_SIDE)) != 0) {
if (southSide.intersect(ray)) {
float[] color = Texture.redstoneWire.getColor(ray.u, ray.v);
if (color[3] > Ray.EPSILON) {
ray.color.x = color[0] * wireColor[power][0];
ray.color.y = color[1] * wireColor[power][1];
ray.color.z = color[2] * wireColor[power][2];
ray.color.w = color[3];
ray.n.set(southSide.n);
ray.t = ray.tNext;
hit = true;
}
}
}
if (hit) {
ray.distance += ray.tNext;
ray.o.scaleAdd(ray.tNext, ray.d);
return true;
}
return false;
}
}