GEO/GEO_Point.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:
 *      Mark Elendt
 *      Side Effects Software Inc.
 *      123 Front Street West, Suite 1401
 *      Toronto, Ontario
 *      Canada   M5J 2M2
 *      416-504-9876
 *
 * NAME:        Geometry Library (C++)
 *
 * COMMENTS:
 *
 */

#ifndef __GEO_Point_H__
#define __GEO_Point_H__

#include "GEO_API.h"
#include <GA/GA_GBElement.h>
#include <UT/UT_SmallObject.h>
#include <UT/UT_Vector4.h>

class GA_Detail;
class GEO_Primitive;

class GEO_API GEO_Point : public GA_GBPoint
{
public:
    /// Class constructors and destructors. The one that takes an attribute
    /// data "steals" the data from adata and sets adata's data pointer to 0.
    // @{
    GEO_Point(const GA_IndexMap &index_map, GA_Offset offset)
        : GA_GBPoint(index_map, offset) {}
    ~GEO_Point() {}
    // @}

    /// @{
    /// Get de-homogenized position (that is, without the homogeneous coordinate
    /// multiplied through).
    const UT_Vector4    getPos() const { return GA_GBPoint::getPos3D(); }
    /// @}

    /// @{
    /// Get and set the homogeneous coordinate
    float       getPw() const           { return GA_GBPoint::getPw(); }
    void        setPw(float w)  { return GA_GBPoint::setPw(w); }
    /// @}

    void        setPos(const UT_Vector4 &P) { GA_GBPoint::setPos3D(P); }
    void        setPos(const UT_Vector3 &P, float w=1)
                                            { GA_GBPoint::setPos3D(P, w); }
    void        setPos(float x, float y, float z)
                                            { GA_GBPoint::setPos3D(x,y,z,1); }
    void        setPos(float x, float y, float z, float w)
                                            { GA_GBPoint::setPos3D(x,y,z,w); }

    /// New GA methods which support getting/setting positons without affecting
    /// the w (homogeneous) coordinate.
    /// @{ 
    const UT_Vector3    getPos3() const
                            { return GA_GBPoint::getPos2D(); }
    void                setPos3(const UT_Vector3 &P)
                            { GA_GBPoint::setPos2D(P); }
    /// @}

    typedef GA_Detail   DetailType;

};

#endif

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