1 package org.simantics.g3d.shape;
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3 import java.util.ArrayList;
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4 import java.util.List;
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6 import javax.vecmath.AxisAngle4d;
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7 import javax.vecmath.Vector3d;
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9 import org.simantics.g3d.math.MathTools;
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13 public static Mesh create(double radius, int s) {
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14 if (s < 3 || radius < MathTools.NEAR_ZERO)
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15 throw new IllegalArgumentException();
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16 List<Vector3d> vertices = new ArrayList<Vector3d>(s+2);
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17 List<Vector3d> normals = new ArrayList<Vector3d>(vertices.size());
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18 List<Integer> indices = new ArrayList<Integer>();
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20 vertices.add(new Vector3d(0.0,0.0,0.0));
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21 normals.add(new Vector3d(0.0,-1.0,0.0));
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22 vertices.add(new Vector3d(0.0,radius*2.0,0.0));
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23 normals.add(new Vector3d(0.0,1.0,0.0));
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25 Vector3d v = new Vector3d(radius,0,0);
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26 for (int i = 0; i < s; i++) {
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27 AxisAngle4d aa = new AxisAngle4d(0,1,0,((double)i/(double)s)*Math.PI * 2);
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28 Vector3d t = new Vector3d();
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29 MathTools.rotate(MathTools.getQuat(aa), v, t);
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31 Vector3d n = new Vector3d(t);
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36 for (int i = 0; i < s; i++) {
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46 for (int i = 0; i < s; i++) {
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55 return new Mesh(vertices,normals,indices);
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59 public static void main(String arg[]) {
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60 Mesh s1 = create(1.0, 3);
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61 Mesh s2 = create(1.0, 4);
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62 System.out.println("debug " + s1 + "\n" + s2);
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