63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
|
|
#include <OpenMesh/Core/IO/MeshIO.hh>
|
|
#include <OpenMesh/Core/Mesh/DefaultTriMesh.hh>
|
|
#include <OpenMesh/Core/Utils/PropertyManager.hh>
|
|
|
|
#include <iostream>
|
|
#include <vector>
|
|
|
|
using MyMesh = OpenMesh::TriMesh;
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
// Read command line options
|
|
MyMesh mesh;
|
|
if (argc != 4) {
|
|
std::cerr << "Usage: " << argv[0] << " #iterations infile outfile" << std::endl;
|
|
return 1;
|
|
}
|
|
const int iterations = argv[1];
|
|
const std::string infile = argv[2];
|
|
const std::string outfile = argv[3];
|
|
|
|
// Read mesh file
|
|
if (!OpenMesh::IO::read_mesh(mesh, infile)) {
|
|
std::cerr << "Error: Cannot read mesh from " << infile << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
{
|
|
// Add a vertex property storing the laplace vector
|
|
auto laplace = OpenMesh::VProp<MyMesh::Point>(mesh);
|
|
|
|
// Add a vertex property storing the laplace of the laplace
|
|
auto bi_laplace = OpenMesh::VProp<MyMesh::Point>(mesh);
|
|
|
|
// Get a propertymanager of the points property of the mesh to use as functor
|
|
auto points = OpenMesh::getPointsProperty(mesh);
|
|
|
|
// Smooth the mesh several times
|
|
for (int i = 0; i < iterations; ++i) {
|
|
// Iterate over all vertices to compute laplace vector
|
|
for (const auto& vh : mesh.vertices())
|
|
laplace(vh) = vh.vertices().avg(points) - points(vh);
|
|
|
|
// Iterate over all vertices to compte update vectors as the negative of the laplace of the laplace damped by 0.5
|
|
for (const auto& vh : mesh.vertices())
|
|
bi_laplace(vh) = (vh.vertices().avg(laplace) - laplace(vh));
|
|
|
|
// update points
|
|
for (const auto& vh : mesh.vertices())
|
|
points(vh) += -0.5 * bi_laplace(vh);
|
|
}
|
|
} // The laplace and update properties are removed is removed from the mesh at the end of this scope.
|
|
|
|
|
|
// Write mesh file
|
|
if (!OpenMesh::IO::read_mesh(mesh, outfile)) {
|
|
std::cerr << "Error: Cannot write mesh to " << outfile << std::endl;
|
|
return 1;
|
|
}
|
|
}
|
|
|