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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
* Copyright (C) 2013 Marko Zivkovic
*
* Contact Information: marko88zivkovic at gmail dot 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
* This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
* during his Bachelor thesis at the computer science department of ETH Zurich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Loic Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Loic Le Coq,
* modifications, extensions, refactorings might have been applied by Marko Zivkovic
*/
/**
* Title : XLogo
* Description : XLogo is an interpreter for the Logo
* programming language
*
* @author Loïc Le Coq
*/
package xlogo.kernel.perspective;
import org.jogamp.java3d.Appearance;
import org.jogamp.java3d.GeometryArray;
import org.jogamp.java3d.Material;
import org.jogamp.java3d.PolygonAttributes;
import org.jogamp.java3d.TriangleFanArray;
import org.jogamp.vecmath.Point3d;
import org.jogamp.java3d.Shape3D;
import org.jogamp.vecmath.Vector3f;
import org.jogamp.vecmath.Color3f;
import xlogo.Logo;
import xlogo.kernel.LogoError;
/**
* This class represent A polygon surface in 3D mode
*
* @author loic
*
* @author Marko Zivkovic - I decoupled this from Application
*/
public class ElementPolygon extends Element3D
{
public ElementPolygon(final Viewer3D v3d)
{
super(v3d);
}
/**
* This method calculates all attributes for polygon and add it to the
* Polygon's list
*/
public void addToScene() throws LogoError
{
if (vertex.size() < 3)
throw new LogoError(Logo.messages.getString("error.3d.3vertex"));
// Create normal vector
final Point3d origine = vertex.get(0);
// System.out.println(" origine "+origine.x+" "+origine.y+" "+origine.z);
Point3d point1;
Vector3f vec1 = null;
Vector3f vec2 = null;
for (int i = 1; i < vertex.size(); i++)
{
point1 = vertex.get(i);
if (!point1.equals(origine))
{
// System.out.println(" point1 "+point1.x+" "+point1.y+" "+point1.z);
vec1 = new Vector3f((float) (point1.x - origine.x), (float) (point1.y - origine.y),
(float) (point1.z - origine.z));
break;
}
}
if (null == vec1)
throw new LogoError(Logo.messages.getString("error.3d.emptypolygon"));
for (int i = 2; i < vertex.size(); i++)
{
point1 = vertex.get(i);
// System.out.println(" point1 "+point1.x+" "+point1.y+" "+point1.z);
vec2 = new Vector3f((float) (point1.x - origine.x), (float) (point1.y - origine.y),
(float) (point1.z - origine.z));
if (vec1.dot(vec2) == 0)
vec2 = null;
else
{
// System.out.println(" vec1 "+vec1.x+" "+vec1.y+" "+vec1.z);
// System.out.println(" vec2 "+vec2.x+" "+vec2.y+" "+vec2.z);
vec2.cross(vec1, vec2);
vec2.normalize();
vec1 = new Vector3f(vec2);
vec1.negate();
// System.out.println("Après"+" vec1 "+vec1.x+" "+vec1.y+" "+vec1.z);
// System.out.println("Après"+" vec2 "+vec2.x+" "+vec2.y+" "+vec2.z);
// if (vec1.x!=0&& vec1.y!=0&& vec1.z!=0)
// System.out.println("coucou"+" vec1 "+vec1.x+" "+vec1.y+" "+vec1.z);
break;
}
if (null == vec2)
throw new LogoError(Logo.messages.getString("error.3d.emptypolygon"));
}
// Create Geometry
final int[] tab = new int[1];
tab[0] = vertex.size();
final TriangleFanArray tfa = new TriangleFanArray(vertex.size(), GeometryArray.COORDINATES
| GeometryArray.COLOR_3 | GeometryArray.NORMALS, tab);
// TriangleFanArray tfa2=new
// TriangleFanArray(vertex.size(),TriangleFanArray.COORDINATES|TriangleFanArray.COLOR_3|TriangleFanArray.NORMALS,tab);
for (int i = 0; i < vertex.size(); i++)
{
tfa.setCoordinate(i, vertex.get(i));
// tfa2.setCoordinate(i, vertex.get(vertex.size()-1-i));
tfa.setColor(i, new Color3f(color.get(i).getRGBColorComponents(null)));
// tfa2.setColor(i, new Color3f(color.get(color.size()-i-1)));
tfa.setNormal(i, vec2);
// tfa2.setNormal(i, vec1);
}
final Shape3D s = new Shape3D(tfa);
final Appearance appear = new Appearance();
final Material mat = new Material(new Color3f(1.0f, 1.0f, 1.0f), new Color3f(0.0f, 0f, 0f), new Color3f(1f, 1.0f,
1.0f), new Color3f(1f, 1f, 1f), 64);
appear.setMaterial(mat);
final PolygonAttributes pa = new PolygonAttributes();
pa.setCullFace(PolygonAttributes.CULL_NONE);
pa.setBackFaceNormalFlip(true);
appear.setPolygonAttributes(pa);
s.setAppearance(appear);
v3d.add3DObject(s);
// DrawPanel.listPoly.add(s);
// DrawPanel.listPoly.add(new Shape3D(tfa2));
// System.out.println(DrawPanel.listPoly.size()+" "+vertex.get(i).x+" "+vertex.get(i).y+" "+vertex.get(i).z);
}
public boolean isPoint()
{
return false;
}
public boolean isPolygon()
{
return true;
}
public boolean isLine()
{
return false;
}
public boolean isText()
{
return false;
}
}
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