--- /dev/null
+package org.simantics.opencascade;\r
+\r
+import java.util.List;\r
+\r
+import javax.vecmath.Matrix4d;\r
+import javax.vecmath.Point3d;\r
+\r
+import org.jcae.opencascade.jni.BRepBndLib;\r
+import org.jcae.opencascade.jni.BRepGProp;\r
+import org.jcae.opencascade.jni.BRep_Tool;\r
+import org.jcae.opencascade.jni.Bnd_Box;\r
+import org.jcae.opencascade.jni.GP_Trsf;\r
+import org.jcae.opencascade.jni.GProp_GProps;\r
+import org.jcae.opencascade.jni.GProp_VelGProps;\r
+import org.jcae.opencascade.jni.Poly_Triangulation;\r
+import org.jcae.opencascade.jni.TopAbs_Orientation;\r
+import org.jcae.opencascade.jni.TopLoc_Location;\r
+import org.jcae.opencascade.jni.TopoDS_Face;\r
+import org.jcae.opencascade.jni.TopoDS_Shape;\r
+\r
+public class OCCTTool {\r
+public static double getBoundingBoxDiagonal(TopoDS_Shape shape) {\r
+ \r
+ double []min = new double[3];\r
+ double []max = new double[3];\r
+ double []mmm = new double[3];\r
+ double []bb = new double[6];\r
+ \r
+ // Compute bounding box:\r
+ //----------------------\r
+ Bnd_Box boundingBox = new Bnd_Box();\r
+ BRepBndLib.add(shape, boundingBox);\r
+ boundingBox.get(bb);\r
+ boundingBox.delete();\r
+ \r
+ min[0] = bb[0]; min[1] = bb[1]; min[2] = bb[2];\r
+ max[0] = bb[3]; max[1] = bb[4]; max[2] = bb[5];\r
+\r
+ //System.out.println("Bounding box: "+"[ "+min[0]+", "+min[1]+", " + min[2] + "] x "+"[ " +max[0] +", " +max[1] +", " +max[2] +"]");\r
+\r
+ // The length of the space diagonal of cuboid\r
+ for (int i = 0; i < 3; i++) mmm[i] = max[i] - min[i];\r
+ double length = Math.sqrt(mmm[2]*mmm[2] + mmm[1]*mmm[1] + mmm[0]*mmm[0]);\r
+\r
+ double t0 = mmm[0]*mmm[0];\r
+ double t1 = mmm[1]*mmm[1];\r
+ double t2 = mmm[2]*mmm[2];\r
+\r
+ double tol = 1.0e-6 * length;\r
+\r
+ if((t0 < tol) || (t1 < tol) || (t2 < tol)) {\r
+ System.out.println("Shape seems to be 2D. Unable to proceed. Aborting.");\r
+ return 0;\r
+ }\r
+ return length;\r
+ }\r
+ \r
+ public static double getBoundingBoxVolume(TopoDS_Shape shape) {\r
+ \r
+ double []min = new double[3];\r
+ double []max = new double[3];\r
+ double []mmm = new double[3];\r
+ double []bb = new double[6];\r
+ \r
+ // Compute bounding box:\r
+ //----------------------\r
+ Bnd_Box boundingBox = new Bnd_Box();\r
+ BRepBndLib.add(shape, boundingBox);\r
+ boundingBox.get(bb);\r
+ boundingBox.delete();\r
+ \r
+ min[0] = bb[0]; min[1] = bb[1]; min[2] = bb[2];\r
+ max[0] = bb[3]; max[1] = bb[4]; max[2] = bb[5];\r
+\r
+ //System.out.println("Bounding box: "+"[ "+min[0]+", "+min[1]+", " + min[2] + "] x "+"[ " +max[0] +", " +max[1] +", " +max[2] +"]");\r
+\r
+ for (int i = 0; i < 3; i++) mmm[i] = max[i] - min[i];\r
+ double vol = Math.sqrt(mmm[2]*mmm[1]*mmm[0]);\r
+\r
+ return vol;\r
+ }\r
+ \r
+ private static GProp_GProps getGProp(TopoDS_Shape shape) {\r
+ GProp_GProps GSystem = null;\r
+ int type = 0;\r
+ if (type == 0) {\r
+ GSystem = new GProp_GProps();\r
+ BRepGProp.volumeProperties(shape, GSystem,0.001);\r
+ } else if (type == 1) {\r
+ GSystem = new GProp_VelGProps();\r
+ BRepGProp.volumeProperties(shape, GSystem,0.001);\r
+ } else if (type == 2) {\r
+ GSystem = new GProp_VelGProps();\r
+ BRepGProp.volumePropertiesGK(shape, GSystem, 0.001);\r
+ }\r
+ return GSystem;\r
+ }\r
+ \r
+ public static double getMass( TopoDS_Shape shape) {\r
+ \r
+ GProp_GProps GSystem = getGProp(shape);\r
+ \r
+ \r
+ double mass = GSystem.mass();\r
+ //System.out.println("Mass " + mass);\r
+ GSystem.delete();\r
+ return mass;\r
+ }\r
+ \r
+ public static double[] getInertia(TopoDS_Shape shape) {\r
+ GProp_GProps GSystem = getGProp(shape);\r
+ \r
+ double inertia[] = GSystem.matrixOfInertia();\r
+ GSystem.delete();\r
+ return inertia;\r
+ }\r
+ \r
+ public static double[] getCentreOfMass(TopoDS_Shape shape) {\r
+ GProp_GProps GSystem = getGProp(shape);\r
+ \r
+ double cm[] = GSystem.centreOfMass();\r
+ GSystem.delete();\r
+ return cm;\r
+ }\r
+ \r
+ public static boolean appendToMesh (TopoDS_Face face, List<Double> meshPoints, List<Integer> meshTriangles)\r
+ {\r
+ TopLoc_Location Location = new TopLoc_Location();\r
+ \r
+ Poly_Triangulation triangulation = BRep_Tool.triangulation(face, Location);\r
+\r
+ if(triangulation == null) {\r
+ Location.delete();\r
+ System.out.println("Encountered empty triangulation after face");\r
+ return false;\r
+ }\r
+ \r
+ boolean reverse = face.orientation()==TopAbs_Orientation.REVERSED;\r
+ \r
+ int lastPoint = meshPoints.size() / 3;\r
+\r
+ int[]triangles = triangulation.triangles();\r
+ double[]nodes = triangulation.nodes();\r
+\r
+ int nofTriangles = triangulation.nbTriangles();\r
+ int nofNodes = triangulation.nbNodes();\r
+ \r
+ \r
+ triangulation.delete();\r
+\r
+ if(nofTriangles < 1) {\r
+ System.out.println("No triangles for mesh on face");\r
+ Location.delete();\r
+ return false;\r
+ }\r
+\r
+ if(nofNodes < 1) {\r
+ System.out.println("No nodes for mesh on face:");\r
+ Location.delete();\r
+ return false;\r
+ }\r
+ \r
+ for(int i = 0; i < nofTriangles; i++) \r
+ {\r
+ int n0, n1, n2; \r
+ if (!reverse) {\r
+ n0 = triangles[3 * i]; \r
+ n1 = triangles[3 * i + 1]; \r
+ n2 = triangles[3 * i + 2];\r
+ } else {\r
+ n0 = triangles[3 * i + 2]; \r
+ n1 = triangles[3 * i + 1]; \r
+ n2 = triangles[3 * i];\r
+ }\r
+ \r
+ meshTriangles.add(n0 + lastPoint);\r
+ meshTriangles.add(n1 + lastPoint);\r
+ meshTriangles.add(n2 + lastPoint);\r
+ }\r
+\r
+ \r
+ GP_Trsf transformation = Location.transformation();\r
+ Location.delete();\r
+\r
+ double d_mat[] = new double[16];\r
+\r
+ transformation.getValues(d_mat);\r
+ Matrix4d mat = new Matrix4d(d_mat);\r
+ \r
+ \r
+ for(int i = 0; i < nofNodes; i++) { \r
+\r
+ Point3d p = new Point3d(nodes[3 * i], nodes[3 * i + 1], nodes[3 * i + 2]);\r
+ mat.transform(p);\r
+\r
+ meshPoints.add(p.x);\r
+ meshPoints.add(p.y);\r
+ meshPoints.add(p.z);\r
+ \r
+ }\r
+ \r
+ transformation.delete();\r
+ \r
+ return true;\r
+ }\r
+}\r
Code Review / simantics / 3d.git / blobdiff