Add initial directories and files

git-svn-id: https://svn.code.sf.net/p/xlogo4schools/svn/trunk@1 3b0d7934-f7ef-4143-9606-b51f2e2281fd

1 files changed, 179 insertions, 0 deletions

diff --git a/logo/src/xlogo/kernel/perspective/ElementPolygon.java b/logo/src/xlogo/kernel/perspective/ElementPolygon.java
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+/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Lo�c 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 Z�rich,
+ * in the year 2013 and/or during future work.
+ * 
+ * It is a reengineered version of XLogo written by Lo�c Le Coq, published
+ * under the GPL License at http://xlogo.tuxfamily.org/
+ * 
+ * Contents of this file were initially written by Lo�c 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 javax.media.j3d.Appearance;
+import javax.media.j3d.Material;
+import javax.media.j3d.PolygonAttributes;
+import javax.media.j3d.TriangleFanArray;
+import javax.vecmath.Point3d;
+import javax.media.j3d.Shape3D;
+import javax.vecmath.Vector3f;
+import javax.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(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
+		
+		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
+		
+		int[] tab = new int[1];
+		tab[0] = vertex.size();
+		TriangleFanArray tfa = new TriangleFanArray(vertex.size(), TriangleFanArray.COORDINATES
+				| TriangleFanArray.COLOR_3 | TriangleFanArray.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)));
+			// tfa2.setColor(i, new Color3f(color.get(color.size()-i-1)));
+			
+			tfa.setNormal(i, vec2);
+			// tfa2.setNormal(i, vec1);
+			
+		}
+		
+		Shape3D s = new Shape3D(tfa);
+		Appearance appear = new Appearance();
+		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);
+		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;
+	}
+}