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);
    }
}