exploring/polyrepresentation/main.cxx

Refer to the Polygonal Representation Example.

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// This file is part of the CAD Exchanger software.
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#include <iostream>
using namespace std;
static void DumpPolyPointSet (const ModelData_PolyPointSet& thePS)
{
ModelData_PolyPointSet::IndexType n = thePS.NumberOfVertices();
cout << "PolyPoint set contains " << n << " vertices" << endl;
for (int i = 0; i < n; ++i) {
cout << "Point " << i << ":" << endl;
cout << " Node coordinates:" << endl;
const ModelData_PolyPointSet::CoordType& aP = thePS.Coordinate (i);
cout << " (" << aP.X() << ", " << aP.Y() << ", " << aP.Z() << ")" << endl;
}
}
// Prints number of PolyLines and local coordinates for every vertex of each PolyLine
static void DumpPolyLineSet (const ModelData_PolyLineSet& thePLS)
{
ModelData_PolyLineSet::IndexType n = thePLS.NumberOfPolyLines();
cout << "PolyLine set contains " << n << " PolyLines" << endl;
for (int i = 0; i < n; ++i) {
cout << "PolyLine " << i << ":" << endl;
cout << " Node coordinates:" << endl;
for (int j = 0; j < thePLS.NumberOfVertices (i); ++j) {
const ModelData_PolyLineSet::CoordType& aV = thePLS.Coordinate (i, j);
cout << " (" << aV.X() << ", " << aV.Y() << ", " << aV.Z() << ")" << endl;
}
}
}
// Prints number of triangles and local data for each node
// Prints Coords and UV-Coords for each vertex and prints Normals and Colors for each triangle
static void DumpTriangleSet (const ModelData_IndexedTriangleSet& theTS)
{
ModelData_IndexedTriangleSet::IndexType n = theTS.NumberOfFaces();
cout << "Triangle set contains " << n << " Triangles" << endl;
for (int i = 0; i < n; ++i) {
cout << "Triangle " << i << ":" << endl;
for (int j = 0; j < 3; ++j) {
cout << " Node " << j << ":" << endl;
// Coordinates
const ModelData_IndexedTriangleSet::CoordType& aV = theTS.Coordinate (i, j);
cout << " Coordinates: (" <<
aV.X() << ", " << aV.Y() << ", " << aV.Z() << ")" << endl;
// UV-coordinates
if (theTS.HasUVCoordinates()) {
const ModelData_Point2d& aUV = theTS.UVCoordinate (i, j);
cout << " UV coordinates: (" <<
aUV.X() << ", " << aUV.Y() << ")" << endl;
}
// Normals
if (theTS.HasNormals()) {
cout << " Normal vector: (" <<
aN.X() << ", " << aN.Y() << ", " << aN.Z() << ")" << endl;
}
// Colors
if (theTS.HasColors()) {
const ModelData_Color& aColor = theTS.VertexColor (i, j);
cout << " Color (RGBA): (" <<
aColor.R() << ", " << aColor.G() << ", " << aColor.B() << ", " << aColor.A() << ")" << endl;
}
}
}
}
// Function to print a PolyVertexSet info
static void PrintPVSInfo (const ModelData_PolyVertexSet& thePVS)
{
cout << "IndexedTriangleSet type." << endl;
const auto& anITS = static_cast<const ModelData_IndexedTriangleSet&> (thePVS);
DumpTriangleSet (anITS);
} else if (thePVS.IsOfType<ModelData_PolyLineSet>()) {
cout << "PolyLineSet type" << endl;
const auto& aPLS = static_cast<const ModelData_PolyLineSet&> (thePVS);
DumpPolyLineSet (aPLS);
} else if (thePVS.IsOfType<ModelData_PolyPointSet>()) {
cout << "PolyPointSet type" << endl;
const auto& aPPS = static_cast<const ModelData_PolyPointSet&> (thePVS);
DumpPolyPointSet (aPPS);
} else {
cout << "Undefined type" << endl;
}
}
// Explores PolyVertexSets of Poly representation
static void ExplorePoly (const ModelData_PolyRepresentation& thePoly)
{
// Get() method retrieves PolyVertexSets listed in Poly representation by calling data providers flushing
// Because of internal mechanics providers flushing is faster than for B-Rep representations
const ModelData_PolyShapeList& aList = thePoly.Get();
// Iterate over PolyShape list
for (ModelData_PolyShapeList::SizeType i = 0; i < aList.Size(); ++i) {
const ModelData_PolyVertexSet& aPVS = aList[i];
cout << "PolyShape " << i << ":" << endl;
PrintPVSInfo (aPVS);
}
}
// Visits directly every part and calls Poly representation exploring if a part has one
class PartPolyVisitor : public ModelData_Model::VoidElementVisitor
{
protected:
void operator() (const ModelData_Part& thePart) override
{
const ModelData_PolyRepresentation& aPolyRep = thePart.PolyRepresentation (ModelData_RM_Poly);
if (aPolyRep) {
ExplorePoly (aPolyRep);
}
}
};
int main (int argc, char *argv[])
{
return 1;
}
// Get the input
if (argc != 2) {
cerr << "Usage: " << argv[0] << " <input_file>, where:" << endl;
cerr << " <input_file> is a name of the XML file to be read" << endl;
return 1;
}
const char* aSource = argv[1];
// Open the model
if (!aModel.Open (aSource)) {
cerr << "Failed to read the file " << aSource << endl;
return 1;
}
// If there is no Poly representation in the model, mesher will compute it
ModelAlgo_BRepMesher aMesher (ModelAlgo_BRepMesherParameters::Fine);
aMesher.Compute (aModel);
// Explore Poly representation of model parts
PartPolyVisitor aVisitor;
aModel.Accept (aVisitor);
return 0;
}