source: GTP/trunk/Lib/Geom/shared/GTGeometry/src/libs/vmi/include/change.h @ 1007

#ifndef __change_h_
#define __change_h_

#include        "mesh.h"
#include        <vector>

namespace       VMI
{
        typedef struct change
        {
                int e;
                int u, v;           // Edge
                int numDel;         // Number of deleted triangles
                Triangle *deleted;  // List of deleted triangles 
                int numMod;         // Number of modified triangles 
                Triangle *modified; // List of triangles deleted  
        } Change;

        // Represents a simplification step in the sequence.
        struct vmiStep
        {
                unsigned int    mV0;
                unsigned int    mV1;
                unsigned int    mT0;
                unsigned int    mT1;
                float x;
                float   y;
                float   z;
                
                std::vector<unsigned int>       mModfaces;

                //      Indicates the the step is obligatory to execute
                //      joined width the following step.
                unsigned int obligatory;
        };

        // Stores all the simplification steps.
        extern  std::vector<vmiStep> mVMISteps;

        extern Change *createChange (Mesh *mesh, int e);
        extern void writeChange(FILE* file, Change *c);
        extern void deleteChange(Change *c);
        extern void printChange(Change *c);

        extern void modifyTriangle(Triangle *t, int c, int p);
        extern int isATriangleToModify(Triangle *t, int c, int p);
        extern int getTrianglesToModify(Mesh *mesh, int c, int p, Triangle *modified);
        extern int isATriangleToDelete(Triangle *t, int c, int p);
        extern int getTrianglesToDelete(Mesh *mesh, int numMod, Triangle *modified, Triangle *deleted, int c, int p);

        extern void modifyTriangles(Mesh *mesh, Change *c);
        extern void unmodifyTriangles(Mesh *mesh, Change *c);
        extern void deleteTriangles(Mesh *mesh, Change *c);
        extern void undeleteTriangles(Mesh *mesh, Change *c);

        extern void printList(Triangle *list, int n);
        extern void deleteItem(Triangle *list, int *n, int item);

        extern void doChange(Mesh *mesh, Change *c);
        extern void undoChange(Mesh *mesh, Change *c);
        extern void computeChanges(Mesh *mesh, Change *c);

        //      Save simplification sequence in Geometry Game Tools format.
        extern void     saveSimplificationSequence(Change       *c);
}

#endif