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

   1 package org.jcae.opencascade.jni;
   2
   3 import org.jcae.opencascade.jni.*;
   4
   5 import static org.junit.Assert.*;
   6 import org.junit.Test;
   7
   8 /**
   9  * Show how to use brep builder
  10  * @author Jerome Robert
  11  */
  12 public class BRepBuilder
  13 {
  14         @Test public void sample()
  15         {
  16                 // Create a shape for the example (an half cone)
  17                 double[] axis=new double[]{
  18                         0,0,0, // position
  19                         0,0,1  // direction
  20                 };
  21                 TopoDS_Shape cone=new BRepPrimAPI_MakeCone(axis, 2, 1, 1, Math.PI).shape();
  22
  23                 // Now we will remove one face of the shape. We need first to find
  24                 // the direct parent of this face.
  25                 TopoDS_Iterator it=new TopoDS_Iterator(cone);
  26
  27                 // The children of solids are shells
  28                 TopoDS_Shell shell = (TopoDS_Shell) it.value();
  29
  30                 // Get a handle on the face to remove
  31                 TopExp_Explorer exp=new TopExp_Explorer(cone, TopAbs_ShapeEnum.FACE);
  32                 TopoDS_Face toRemove = (TopoDS_Face) exp.current();
  33                 exp.next();
  34                 TopoDS_Face anotherFace = (TopoDS_Face) exp.current();
  35
  36                 // Remove the face
  37                 BRep_Builder bb=new BRep_Builder();
  38                 bb.remove(shell, toRemove);
  39
  40                 // Let's revert the face and readd it to the cube
  41                 bb.add(shell, toRemove.reversed());
  42
  43                 // We can also create a compound containing only the 2 first faces of
  44                 // the cone
  45                 TopoDS_Compound compound=new TopoDS_Compound();
  46                 bb.makeCompound(compound);
  47                 bb.add(compound, toRemove);
  48                 bb.add(compound, anotherFace);
  49         }
  50 }