CSG_BooleanOps.cpp

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "../extern/CSG_BooleanOps.h"
#include "BSP_CSGMesh_CFIterator.h"
#include "MEM_RefCountPtr.h"

#include "../../boolop/extern/BOP_Interface.h"
#include <iostream>
using namespace std;

#include "BSP_MeshPrimitives.h"

struct BSP_MeshInfo {
        BSP_CSGMesh *output_mesh;
};

using namespace std;
        
        CSG_BooleanOperation * 
CSG_NewBooleanFunction(
        void
){
        BSP_MeshInfo * mesh_info = new BSP_MeshInfo;
        CSG_BooleanOperation * output = new CSG_BooleanOperation;

        if (mesh_info==NULL || output==NULL) return NULL;

        mesh_info->output_mesh = NULL;
        output->CSG_info = mesh_info;

        return output;
}
        
        int
CSG_PerformBooleanOperation(
        CSG_BooleanOperation                    *operation,
        CSG_OperationType                               op_type,
        CSG_FaceIteratorDescriptor              obAFaces,
        CSG_VertexIteratorDescriptor    obAVertices,
        CSG_FaceIteratorDescriptor              obBFaces,
        CSG_VertexIteratorDescriptor    obBVertices
){
        if (operation == NULL) return 0;
        BSP_MeshInfo * mesh_info = static_cast<BSP_MeshInfo *>(operation->CSG_info);
        if (mesh_info == NULL) return 0;

        obAFaces.Reset(obAFaces.it);
        obBFaces.Reset(obBFaces.it);
        obAVertices.Reset(obAVertices.it);
        obBVertices.Reset(obBVertices.it);

        BoolOpType boolType;
        
        switch( op_type ) {
        case e_csg_union:
          boolType = BOP_UNION;
          break;
        case e_csg_difference:
          boolType = BOP_DIFFERENCE;
          break;
        default:
          boolType = BOP_INTERSECTION;
          break;
        }

        BoolOpState boolOpResult;
        try {
        boolOpResult = BOP_performBooleanOperation( boolType,
                                     (BSP_CSGMesh**) &(mesh_info->output_mesh),
                                         obAFaces, obAVertices, obBFaces, obBVertices);
        }
        catch(...) {
                return 0;
        }

        switch (boolOpResult) {
        case BOP_OK: return 1;
        case BOP_NO_SOLID: return -2;
        case BOP_ERROR: return 0;
        default: return 1;
        }
}

        int
CSG_OutputFaceDescriptor(
        CSG_BooleanOperation * operation,
        CSG_FaceIteratorDescriptor * output
){
        if (operation == NULL) return 0;
        BSP_MeshInfo * mesh_info = static_cast<BSP_MeshInfo *>(operation->CSG_info);

        if (mesh_info == NULL) return 0;
        if (mesh_info->output_mesh == NULL) return 0;

        BSP_CSGMesh_FaceIt_Construct(mesh_info->output_mesh,output);
        return 1;
}


        int
CSG_OutputVertexDescriptor(
        CSG_BooleanOperation * operation,
        CSG_VertexIteratorDescriptor *output
){
        if (operation == NULL) return 0;
        BSP_MeshInfo * mesh_info = static_cast<BSP_MeshInfo *>(operation->CSG_info);

        if (mesh_info == NULL) return 0;
        if (mesh_info->output_mesh == NULL) return 0;

        BSP_CSGMeshVertexIt_Construct(mesh_info->output_mesh,output);
        return 1;
}

        void
CSG_FreeVertexDescriptor(
        CSG_VertexIteratorDescriptor * v_descriptor
){      
        BSP_CSGMesh_VertexIt_Destruct(v_descriptor);
}       


        void
CSG_FreeFaceDescriptor(
        CSG_FaceIteratorDescriptor * f_descriptor
){
        BSP_CSGMesh_FaceIt_Destruct(f_descriptor);
}


        void
CSG_FreeBooleanOperation(
        CSG_BooleanOperation *operation
){
        if (operation != NULL) {
                BSP_MeshInfo * mesh_info = static_cast<BSP_MeshInfo *>(operation->CSG_info);

                delete (mesh_info->output_mesh);
                delete(mesh_info);
                delete(operation);
        }
}