/*
* Open Source Physics software is free software as described near the bottom of this code file.
*
* For additional information and documentation on Open Source Physics please see:
* <http://www.opensourcephysics.org/>
*/
package org.opensourcephysics.display3d.simple3d;
import org.opensourcephysics.controls.XML;
import org.opensourcephysics.controls.XMLControl;
/**
* <p>Title: ElementBox</p>
* <p>Description: Painter's algorithm implementation of a Box</p>
* @author Francisco Esquembre
* @version March 2005
*/
public class ElementBox extends AbstractTile implements org.opensourcephysics.display3d.core.ElementBox {
// Configuration variables
private boolean closedBottom = true, closedTop = true;
// Implementation variables
private boolean changeNTiles = true;
private int nx = -1, ny = -1, nz = -1; // Make sure arrays are allocated
private double[][][] standardBox = null;
{ // Initialization block
getStyle().setResolution(new Resolution(3, 3, 3));
}
// -------------------------------------
// Configuration
// -------------------------------------
public void setClosedBottom(boolean close) {
this.closedBottom = close;
setElementChanged(true);
changeNTiles = true;
}
public boolean isClosedBottom() {
return this.closedBottom;
}
public void setClosedTop(boolean close) {
this.closedTop = close;
setElementChanged(true);
changeNTiles = true;
}
public boolean isClosedTop() {
return this.closedTop;
}
// -------------------------------------
// Private or protected methods
// -------------------------------------
protected synchronized void computeCorners() {
int theNx = 1, theNy = 1, theNz = 1;
org.opensourcephysics.display3d.core.Resolution res = getRealStyle().getResolution();
if(res!=null) {
switch(res.getType()) {
case org.opensourcephysics.display3d.core.Resolution.DIVISIONS :
theNx = Math.max(res.getN1(), 1);
theNy = Math.max(res.getN2(), 1);
theNz = Math.max(res.getN3(), 1);
break;
case org.opensourcephysics.display3d.core.Resolution.MAX_LENGTH :
theNx = Math.max((int) Math.round(0.49+Math.abs(getSizeX())/res.getMaxLength()), 1);
theNy = Math.max((int) Math.round(0.49+Math.abs(getSizeY())/res.getMaxLength()), 1);
theNz = Math.max((int) Math.round(0.49+Math.abs(getSizeZ())/res.getMaxLength()), 1);
break;
}
}
if((nx!=theNx)||(ny!=theNy)||(nz!=theNz)||changeNTiles) { // Reallocate arrays
nx = theNx;
ny = theNy;
nz = theNz;
changeNTiles = false;
standardBox = createStandardBox(nx, ny, nz, closedTop, closedBottom);
setCorners(new double[standardBox.length][4][3]);
}
for(int i = 0; i<numberOfTiles; i++) {
for(int j = 0, sides = corners[i].length; j<sides; j++) {
System.arraycopy(standardBox[i][j], 0, corners[i][j], 0, 3);
sizeAndToSpaceFrame(corners[i][j]);
}
}
setElementChanged(false);
}
/**
* Returns the data for a standard box (from (-0.5,-0.5,-0.5) to (0.5,0.5,0.5) )
* with the given parameters
*/
static private double[][][] createStandardBox(int nx, int ny, int nz, boolean top, boolean bottom) {
int nTotal = 2*nx*nz+2*ny*nz;
if(bottom) {
nTotal += nx*ny;
}
if(top) {
nTotal += nx*ny;
}
double[][][] data = new double[nTotal][4][3];
int tile = 0;
double dx = 1.0/nx, dy = 1.0/ny, dz = 1.0/nz;
for(int i = 0; i<nx; i++) { // x-y sides
double theX = i*dx-0.5;
for(int j = 0; j<ny; j++) {
double theY = j*dy-0.5;
if(bottom) {
data[tile][0][0] = theX;
data[tile][0][1] = theY;
data[tile][0][2] = -0.5;
data[tile][1][0] = theX+dx;
data[tile][1][1] = theY;
data[tile][1][2] = -0.5;
data[tile][2][0] = theX+dx;
data[tile][2][1] = theY+dy;
data[tile][2][2] = -0.5;
data[tile][3][0] = theX;
data[tile][3][1] = theY+dy;
data[tile][3][2] = -0.5;
tile++;
}
if(top) { // The upper side
data[tile][0][0] = theX;
data[tile][0][1] = theY;
data[tile][0][2] = 0.5;
data[tile][1][0] = theX+dx;
data[tile][1][1] = theY;
data[tile][1][2] = 0.5;
data[tile][2][0] = theX+dx;
data[tile][2][1] = theY+dy;
data[tile][2][2] = 0.5;
data[tile][3][0] = theX;
data[tile][3][1] = theY+dy;
data[tile][3][2] = 0.5;
tile++;
}
}
}
for(int i = 0; i<nx; i++) { // x-z sides
double theX = i*dx-0.5;
for(int k = 0; k<nz; k++) {
double theZ = k*dz-0.5;
data[tile][0][0] = theX;
data[tile][0][2] = theZ;
data[tile][0][1] = -0.5;
data[tile][1][0] = theX+dx;
data[tile][1][2] = theZ;
data[tile][1][1] = -0.5;
data[tile][2][0] = theX+dx;
data[tile][2][2] = theZ+dz;
data[tile][2][1] = -0.5;
data[tile][3][0] = theX;
data[tile][3][2] = theZ+dz;
data[tile][3][1] = -0.5;
tile++; // The upper side
data[tile][0][0] = theX;
data[tile][0][2] = theZ;
data[tile][0][1] = 0.5;
data[tile][1][0] = theX+dx;
data[tile][1][2] = theZ;
data[tile][1][1] = 0.5;
data[tile][2][0] = theX+dx;
data[tile][2][2] = theZ+dz;
data[tile][2][1] = 0.5;
data[tile][3][0] = theX;
data[tile][3][2] = theZ+dz;
data[tile][3][1] = 0.5;
tile++;
}
}
for(int k = 0; k<nz; k++) { // y-z sides
double theZ = k*dz-0.5;
for(int j = 0; j<ny; j++) {
double theY = j*dy-0.5;
data[tile][0][2] = theZ;
data[tile][0][1] = theY;
data[tile][0][0] = -0.5;
data[tile][1][2] = theZ+dz;
data[tile][1][1] = theY;
data[tile][1][0] = -0.5;
data[tile][2][2] = theZ+dz;
data[tile][2][1] = theY+dy;
data[tile][2][0] = -0.5;
data[tile][3][2] = theZ;
data[tile][3][1] = theY+dy;
data[tile][3][0] = -0.5;
tile++; // The upper side
data[tile][0][2] = theZ;
data[tile][0][1] = theY;
data[tile][0][0] = 0.5;
data[tile][1][2] = theZ+dz;
data[tile][1][1] = theY;
data[tile][1][0] = 0.5;
data[tile][2][2] = theZ+dz;
data[tile][2][1] = theY+dy;
data[tile][2][0] = 0.5;
data[tile][3][2] = theZ;
data[tile][3][1] = theY+dy;
data[tile][3][0] = 0.5;
tile++;
}
}
return data;
}
// ----------------------------------------------------
// XML loader
// ----------------------------------------------------
/**
* Returns an XML.ObjectLoader to save and load object data.
* @return the XML.ObjectLoader
*/
public static XML.ObjectLoader getLoader() {
return new Loader();
}
static private class Loader extends org.opensourcephysics.display3d.core.ElementBox.Loader {
public Object createObject(XMLControl control) {
return new ElementBox();
}
}
}
/*
* Open Source Physics software is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public License (GPL) as
* published by the Free Software Foundation; either version 2 of the License,
* or(at your option) any later version.
* Code that uses any portion of the code in the org.opensourcephysics package
* or any subpackage (subdirectory) of this package must must also be be released
* under the GNU GPL license.
*
* This software 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
* or view the license online at http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2007 The Open Source Physics project
* http://www.opensourcephysics.org
*/