/*
* 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 Plane</p>
* @author Francisco Esquembre
* @version March 2005
*/
public class ElementPlane extends AbstractTile implements org.opensourcephysics.display3d.core.ElementPlane {
// Configuration variables
private double vectorU[] = {1.0, 0.0, 0.0};
private double vectorV[] = {0.0, 1.0, 0.0};
// Implementation variables
private int nu = -1, nv = -1; // Make sure arrays are allocated
private double vectorUSize = 1.0, vectorVSize = 1.0;
{ // Initialization block
setXYZ(0.0, 0.0, 0.0);
setSizeXYZ(1.0, 1.0, 1.0);
}
// -------------------------------------
// Configuration
// -------------------------------------
public void setFirstDirection(double[] vector) {
vectorU[0] = vector[0];
vectorU[1] = vector[1];
vectorU[2] = vector[2];
vectorUSize = Math.sqrt(vectorU[0]*vectorU[0]+vectorU[1]*vectorU[1]+vectorU[2]*vectorU[2]);
setElementChanged(true);
}
public double[] getFirstDirection() {
return new double[] {vectorU[0], vectorU[1], vectorU[2]};
}
public void setSecondDirection(double[] vector) {
vectorV[0] = vector[0];
vectorV[1] = vector[1];
vectorV[2] = vector[2];
vectorVSize = Math.sqrt(vectorV[0]*vectorV[0]+vectorV[1]*vectorV[1]+vectorV[2]*vectorV[2]);
setElementChanged(true);
}
public double[] getSecondDirection() {
return new double[] {vectorV[0], vectorV[1], vectorV[2]};
}
// -------------------------------------
// Private or protected methods
// -------------------------------------
protected synchronized void computeCorners() {
int theNu = 1, theNv = 1;
org.opensourcephysics.display3d.core.Resolution res = getRealStyle().getResolution();
if(res!=null) {
switch(res.getType()) {
case org.opensourcephysics.display3d.core.Resolution.DIVISIONS :
theNu = Math.max(res.getN1(), 1);
theNv = Math.max(res.getN2(), 1);
break;
case org.opensourcephysics.display3d.core.Resolution.MAX_LENGTH :
theNu = Math.max((int) Math.round(0.49+Math.abs(getSizeX())*vectorUSize/res.getMaxLength()), 1);
theNv = Math.max((int) Math.round(0.49+Math.abs(getSizeY())*vectorVSize/res.getMaxLength()), 1);
break;
}
}
if((nu!=theNu)||(nv!=theNv)) { // Reallocate arrays
nu = theNu;
nv = theNv;
setCorners(new double[nu*nv][4][3]);
}
int tile = 0;
double du = getSizeX()/nu, dv = getSizeY()/nv;
for(int i = 0; i<nu; i++) { // x-y sides
double u = i*du-getSizeX()/2;
for(int j = 0; j<nv; j++) {
double v = j*dv-getSizeY()/2;
for(int k = 0; k<3; k++) {
corners[tile][0][k] = u*vectorU[k]+v*vectorV[k];
}
for(int k = 0; k<3; k++) {
corners[tile][1][k] = (u+du)*vectorU[k]+v*vectorV[k];
}
for(int k = 0; k<3; k++) {
corners[tile][2][k] = (u+du)*vectorU[k]+(v+dv)*vectorV[k];
}
for(int k = 0; k<3; k++) {
corners[tile][3][k] = u*vectorU[k]+(v+dv)*vectorV[k];
}
tile++; // The upper side
}
}
for(int i = 0; i<numberOfTiles; i++) {
for(int j = 0, sides = corners[i].length; j<sides; j++) {
toSpaceFrame(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.ElementPlane.Loader {
public Object createObject(XMLControl control) {
return new ElementPlane();
}
}
}
/*
* 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
*/