GU/GU_Surfacer.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Side Effects Software Inc.
 *      123 Front Street West, Suite 1401
 *      Toronto, Ontario
 *      Canada   M5J 2M2
 *      416-504-9876
 *
 * NAME:        GU_Surfacer.h (C++)
 *
 * COMMENTS:
 * 
 */

#ifndef __GU_Surfacer_h__
#define __GU_Surfacer_h__

#include "GU_API.h"
#include "GU_Detail.h"
#include <UT/UT_HashTable.h>

class GU_PrimPoly;

class GU_API GU_Surfacer
{
public:
    GU_Surfacer(GU_Detail &gdp,
                const UT_Vector3 &pos,
                const UT_Vector3 &size,
                int xdivs, int ydivs, int zdivs,
                bool do_normals);
    virtual ~GU_Surfacer();

    // create polygons for cell given density values at the corners and
    // optionally gradient values
    void addCell(int x, int y, int z, const fpreal density[8], const UT_Vector3 gradient[8]);
    
protected:
    // called after adding a new point to the detail
    virtual void pointAdded(GEO_Point *pt, int idx0, int idx1, fpreal u) {}
    // called after adding a new polygon to the detail
    virtual void polygonAdded(GEO_PrimPoly *poly) {}

private:
    GU_Detail &myGdp;
    UT_Vector3 myP;
    UT_Vector3 mySize;
    UT_Vector3 myStepSize;
    int myXDivs;
    int myYDivs;
    int myZDivs;
    int myNormalOffset;
    UT_HashTable myPoints;
};

#endif

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