/*
* 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;
import org.opensourcephysics.display3d.simple3d.utils.EllipsoidUtils;
/**
* <p>Title: ElementEllipsoid</p>
* <p>Description: Painter's algorithm implementation of an Ellipsoid</p>
* @author Francisco Esquembre
* @version March 2005
*/
public class ElementEllipsoid extends AbstractTile implements org.opensourcephysics.display3d.core.ElementEllipsoid {
// Configuration variables
private boolean closedBottom = true, closedTop = true;
private boolean closedLeft = true, closedRight = true;
private int minAngleU = 0, maxAngleU = 360;
private int minAngleV = -90, maxAngleV = 90;
// Implementation variables
private boolean changeNTiles = true;
private int nr = -1, nu = -1, nv = -1; // Make sure arrays are allocated
private double[][][] standardSphere = null;
//Static
static final protected double TO_RADIANS = Math.PI/180.0;
{ // Initialization block
getStyle().setResolution(new Resolution(3, 12, 12));
}
// -------------------------------------
// 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;
}
public void setClosedLeft(boolean close) {
this.closedLeft = close;
setElementChanged(true);
changeNTiles = true;
}
public boolean isClosedLeft() {
return this.closedLeft;
}
public void setClosedRight(boolean close) {
this.closedRight = close;
setElementChanged(true);
changeNTiles = true;
}
public boolean isClosedRight() {
return this.closedRight;
}
public void setMinimumAngleU(int angle) {
this.minAngleU = angle;
setElementChanged(true);
changeNTiles = true;
}
public int getMinimumAngleU() {
return this.minAngleU;
}
public void setMaximumAngleU(int angle) {
this.maxAngleU = angle;
setElementChanged(true);
changeNTiles = true;
}
public int getMaximumAngleU() {
return this.maxAngleU;
}
public void setMinimumAngleV(int angle) {
this.minAngleV = angle;
setElementChanged(true);
changeNTiles = true;
}
public int getMinimumAngleV() {
return this.minAngleV;
}
public void setMaximumAngleV(int angle) {
this.maxAngleV = angle;
setElementChanged(true);
changeNTiles = true;
}
public int getMaximumAngleV() {
return this.maxAngleV;
}
// -------------------------------------
// Private or protected methods
// -------------------------------------
protected synchronized void computeCorners() {
int theNr = 1, theNu = 1, theNv = 1;
double angleu1 = minAngleU, angleu2 = maxAngleU;
if(Math.abs(angleu2-angleu1)>360) {
angleu2 = angleu1+360;
}
double anglev1 = minAngleV, anglev2 = maxAngleV;
if(Math.abs(anglev2-anglev1)>180) {
anglev2 = anglev1+180;
}
org.opensourcephysics.display3d.core.Resolution res = getRealStyle().getResolution();
if(res!=null) {
switch(res.getType()) {
case org.opensourcephysics.display3d.core.Resolution.DIVISIONS :
theNr = Math.max(res.getN1(), 1);
theNu = Math.max(res.getN2(), 1);
theNv = Math.max(res.getN3(), 1);
break;
case org.opensourcephysics.display3d.core.Resolution.MAX_LENGTH :
double maxRadius = Math.max(Math.max(Math.abs(getSizeX()), Math.abs(getSizeY())), Math.abs(getSizeZ()))/2;
theNr = Math.max((int) Math.round(0.49+maxRadius/res.getMaxLength()), 1);
theNu = Math.max((int) Math.round(0.49+Math.abs(angleu2-angleu1)*TO_RADIANS*maxRadius/res.getMaxLength()), 1);
theNv = Math.max((int) Math.round(0.49+Math.abs(anglev2-anglev1)*TO_RADIANS*maxRadius/res.getMaxLength()), 1);
break;
}
}
if((nr!=theNr)||(nu!=theNu)||(nv!=theNv)||changeNTiles) { // Reallocate arrays
nr = theNr;
nu = theNu;
nv = theNv;
standardSphere = EllipsoidUtils.createStandardEllipsoid(nr, nu, nv, angleu1, angleu2, anglev1, anglev2, closedTop, closedBottom, closedLeft, closedRight);
setCorners(new double[standardSphere.length][4][3]);
changeNTiles = false;
}
for(int i = 0; i<numberOfTiles; i++) {
for(int j = 0, sides = corners[i].length; j<sides; j++) {
System.arraycopy(standardSphere[i][j], 0, corners[i][j], 0, 3);
sizeAndToSpaceFrame(corners[i][j]);
}
}
setElementChanged(false);
}
// ----------------------------------------------------
// 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.ElementEllipsoid.Loader {
public Object createObject(XMLControl control) {
return new ElementEllipsoid();
}
}
}
/*
* 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
*/