Tesselator.hpp

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//
// Created by Christian Swan on 09.10.17.
//

#ifndef LVR2_ALGORITHM_TESSELATOR_H
#define LVR2_ALGORITHM_TESSELATOR_H

#include "lvr2/geometry/Handles.hpp"
#include "lvr2/util/ClusterBiMap.hpp"
#include "lvr2/algorithm/NormalAlgorithms.hpp"

#if _MSC_VER
#include <Windows.h>
#endif

#ifndef __APPLE__
#include <GL/glu.h>
#include <GL/glut.h>
#define CALLBACK
#else
#include <OpenGL/glu.h>
#include <GLUT/glut.h>
#endif

namespace lvr2
{

template<typename BaseVecT>
class Tesselator {

public:

    static void apply(
        BaseMesh<BaseVecT>& mesh,
        ClusterBiMap<FaceHandle>& clusters,
        DenseFaceMap<Normal<typename BaseVecT::CoordType>>& faceNormals,
        float lineFusionThreshold
    );

private:

    static GLUtesselator* m_tesselator;

    static GLenum m_type;

    static std::vector<BaseVecT> m_vertices;

    static std::vector<BaseVecT> m_faces;

    static void CALLBACK beginCallback(GLenum type);

    static void CALLBACK vertexCallback(void* data);

    static void CALLBACK combineDataCallback(GLdouble coords[3],
                                             void *vertex_data[4],
                                             GLfloat weight[4],
                                             void **outData,
                                             void *userData);

    static void CALLBACK endCallback(void);
    static void CALLBACK errorCallback(GLenum errno);

    static void init();

    static void addTesselatedFaces(
        BaseMesh<BaseVecT>& mesh,
        ClusterBiMap<FaceHandle>& clusters,
        DenseFaceMap<Normal<typename BaseVecT::CoordType>>& faceNormal,
        ClusterHandle clusterH
    );
};

} // namespace lvr2

#include "lvr2/algorithm/Tesselator.tcc"

#endif //LVR2_ALGORITHM_TESSELATOR_H