/*
* Object3DBranch.java 23 jan. 09
*
* Sweet Home 3D, Copyright (c) 2007-2009 Emmanuel PUYBARET / eTeks <info@eteks.com>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.eteks.sweethome3d.j3d;
import java.awt.Shape;
import java.awt.geom.GeneralPath;
import java.util.HashMap;
import java.util.Map;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.ColoringAttributes;
import javax.media.j3d.LineAttributes;
import javax.media.j3d.Material;
import javax.media.j3d.PolygonAttributes;
import javax.vecmath.Color3f;
/**
* Root of a branch that matches a home object.
*/
public abstract class Object3DBranch extends BranchGroup {
// The coloring attributes used for drawing outline
protected static final ColoringAttributes OUTLINE_COLORING_ATTRIBUTES =
new ColoringAttributes(new Color3f(0.16f, 0.16f, 0.16f), ColoringAttributes.FASTEST);
protected static final PolygonAttributes OUTLINE_POLYGON_ATTRIBUTES =
new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_BACK, 0);
protected static final LineAttributes OUTLINE_LINE_ATTRIBUTES =
new LineAttributes(0.5f, LineAttributes.PATTERN_SOLID, true);
protected static final Integer DEFAULT_COLOR = 0xFFFFFF;
protected static final Integer DEFAULT_AMBIENT_COLOR = 0x333333;
protected static final Material DEFAULT_MATERIAL = new Material();
private static final Map<Long, Material> materials = new HashMap<Long, Material>();
static {
DEFAULT_MATERIAL.setCapability(Material.ALLOW_COMPONENT_READ);
DEFAULT_MATERIAL.setShininess(1);
DEFAULT_MATERIAL.setSpecularColor(0, 0, 0);
}
/**
* Updates the this branch from the home object.
*/
public abstract void update();
/**
* Returns the shape matching the coordinates in <code>points</code> array.
*/
protected Shape getShape(float [][] points) {
GeneralPath path = new GeneralPath();
path.moveTo(points [0][0], points [0][1]);
for (int i = 1; i < points.length; i++) {
path.lineTo(points [i][0], points [i][1]);
}
path.closePath();
return path;
}
/**
* Returns a shared material instance matching the given color.
*/
protected Material getMaterial(Integer diffuseColor, Integer ambientColor, float shininess) {
if (diffuseColor != null) {
Long materialKey = new Long(diffuseColor + (ambientColor << 24) + ((char)(shininess * 128) << 48));
Material material = materials.get(materialKey);
if (material == null) {
Color3f ambientMaterialColor = new Color3f(((ambientColor >>> 16) & 0xFF) / 255f,
((ambientColor >>> 8) & 0xFF) / 255f,
(ambientColor & 0xFF) / 255f);
Color3f diffuseMaterialColor = new Color3f(((diffuseColor >>> 16) & 0xFF) / 255f,
((diffuseColor >>> 8) & 0xFF) / 255f,
(diffuseColor & 0xFF) / 255f);
material = new Material(ambientMaterialColor, new Color3f(), diffuseMaterialColor,
new Color3f(shininess, shininess, shininess), shininess * 128);
material.setCapability(Material.ALLOW_COMPONENT_READ);
// Store created materials in cache
materials.put(materialKey, material);
}
return material;
} else {
return getMaterial(DEFAULT_COLOR, DEFAULT_AMBIENT_COLOR, shininess);
}
}
}