org.jcae.opencascade/src-java-test/org/jcae/opencascade/jni/TopoJunction.java

   1 package org.jcae.opencascade.jni;
   2
   3 import static org.junit.Assert.*;
   4 import org.junit.Test;
   5
   6 import org.jcae.opencascade.Utilities;
   7
   8 /**
   9  * Create a square with an attached free edge
  10  * @author Jerome Robert
  11  */
  12 public class TopoJunction
  13 {
  14         @Test public void sample()
  15         {
  16                 // The plate
  17                 double[] p1=new double[]{0, 0, 0};
  18                 double[] p2=new double[]{0, 1, 0};
  19                 double[] p3=new double[]{1, 1, 0};
  20                 double[] p4=new double[]{1, 0, 0};
  21                 double[] p5=new double[]{0.5, 0.5, 0};
  22                 double[] p6=new double[]{0.5, 0.5, 1};
  23
  24                 TopoDS_Edge edge1=(TopoDS_Edge) new BRepBuilderAPI_MakeEdge(p1,p2).shape();
  25                 TopoDS_Edge edge2=(TopoDS_Edge) new BRepBuilderAPI_MakeEdge(p2,p3).shape();
  26                 TopoDS_Edge edge3=(TopoDS_Edge) new BRepBuilderAPI_MakeEdge(p3,p4).shape();
  27                 TopoDS_Edge edge4=(TopoDS_Edge) new BRepBuilderAPI_MakeEdge(p4,p1).shape();
  28
  29                 TopoDS_Wire wirePlate=
  30                         (TopoDS_Wire) new BRepBuilderAPI_MakeWire(edge1, edge2, edge3, edge4).shape();
  31
  32                 TopoDS_Face face=(TopoDS_Face) new BRepBuilderAPI_MakeFace(wirePlate, true).shape();
  33
  34                 // The wire
  35                 TopoDS_Vertex vertex1=(TopoDS_Vertex) new BRepBuilderAPI_MakeVertex(p5).shape();
  36                 TopoDS_Vertex vertex2=(TopoDS_Vertex) new BRepBuilderAPI_MakeVertex(p6).shape();
  37                 TopoDS_Edge freeEdge=(TopoDS_Edge) new BRepBuilderAPI_MakeEdge(vertex1,vertex2).shape();
  38
  39                 //Connect the wire to the plate
  40                 BRep_Builder bb=new BRep_Builder();
  41                 bb.add(face, vertex1);
  42
  43                 //Project p5 on surface
  44                 double [] uv = new double[2];
  45                 Geom_Surface surface = BRep_Tool.surface(face);
  46                 GeomAPI_ProjectPointOnSurf proj = new GeomAPI_ProjectPointOnSurf(p5, surface);
  47                 proj.lowerDistanceParameters(uv);
  48                 double tolerance = proj.lowerDistance();
  49                 bb.updateVertex(vertex1, uv[0], uv[1], face, tolerance);
  50
  51                 //Check that the vertex is on the face
  52                 double[] coords=BRep_Tool.parameters(vertex1, face);
  53                 assertEquals(coords[0], 0.5, 1.e-7);
  54                 assertEquals(coords[1], 0.5, 1.e-7);
  55
  56                 //Put everything in a compound
  57                 TopoDS_Compound compound=new TopoDS_Compound();
  58                 bb.makeCompound(compound);
  59                 bb.add(compound, freeEdge);
  60                 bb.add(compound, face);
  61
  62                 Utilities.dumpTopology(compound, System.out);
  63                 //Write to to a file
  64                 BRepTools.write(compound, "/tmp/test.brep");
  65         }
  66 }