RU/RU_RotoSpline.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 Alexander
 *      Side Effects
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        RU_RotoSpline.h
 *
 * COMMENTS:
 *      RotoSpline creation class.
 */
#ifndef RU_ROTOSPLINE_H
#define RU_ROTOSPLINE_H

#include "RU_API.h"
#include <UT/UT_PtrArray.h>

class RU_RotoPoint;
class GU_Detail;
class UT_Vector2Array;

enum RU_RotoFill
{
    ROTO_FILL_OPEN = 0,
    ROTO_FILL_CLOSED,
    ROTO_FILL_HOLLOW
};

enum RU_RotoType
{
    ROTO_TYPE_POLYGON = 0,
    ROTO_TYPE_BEZIER  = 1,
    ROTO_TYPE_NURBS   = 2
};

class RU_API RU_RotoSpline
{
public:
                 RU_RotoSpline(RU_RotoType curvetype, RU_RotoFill type,
                               float detail =0.5f, float aspect = 1.0f);
                ~RU_RotoSpline();

    int           entries() const               { return myPoints.entries(); }
    RU_RotoPoint *getPoint(int i)               { return myPoints(i); }
    RU_RotoPoint *getPointByIndex(float index);
    void          addPoint(RU_RotoPoint *point);

    RU_RotoFill   getFillType() const { return myFillType; }
    

        
    GU_Detail    *build(GU_Detail *rawcurve = 0);
    GU_Detail    *buildFeather(float basewidth = 0.5F, GU_Detail *rawcurve = 0);

    static void   buildFreehand(const UT_Vector2Array &ipoints,
                                UT_Vector2Array &points,
                                UT_Vector2Array &slopes1,
                                UT_Vector2Array &slopes2,
                                float tolerance,bool isbezier, bool close);

    // The feather parameter controls whether or not we create a point
    // attribute containing each points feather width.
    void          buildRawCurve(GU_Detail &, bool feather=false);


private:
    UT_PtrArray<RU_RotoPoint *> myPoints;
    RU_RotoFill                 myFillType;
    float                       myAspect;
    float                       myDetail;
    RU_RotoType                 myCurveType;
};


class RU_API RU_RotoPoint
{
public:
    RU_RotoPoint(float index, float u, float v, float w,
                 float u1 =0.0F, float v1 = 0.0F,
                 float u2 = 0.0F, float v2 = 0.0F,
                 float feather = 0.0F)
        : myU(u), myV(v), myThickness(w),
          mySlopeU1(u1), mySlopeU2(u2), mySlopeV1(v1), mySlopeV2(v2),
          myIndex(index), myFeatherWidth(feather) {}
        
    float myU, myV;
    float myThickness;
    float mySlopeU1, mySlopeU2, mySlopeV1, mySlopeV2; 
    float myIndex;
    float myFeatherWidth;
};



#endif

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