SOP/SOP_SplitPointParser.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:
 *      Magdalena Georgescu
 *      Side Effects Software Inc.
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        SOP Library (C++)
 *
 * COMMENTS:
 *      Parser for the PolySplit SOP.
 */

#ifndef __SOP_SplitPointParser_h__
#define __SOP_SplitPointParser_h__

#include "SOP_API.h"
#include <GU/GU_EdgeSplit.h>
#include <GOP/GOP_Parser.h>
#include "SOP_PolySplit.h"

// Parser tokens
#define         CHAR_EDGE               'e'
#define         CHAR_VERTEX             'v'
#define         CHAR_POINT              'p'
#define         CHAR_T                  ':'
#define         CHAR_POINT_DELIM        '-'

class SOP_API SOP_SplitPointParser : public GOP_Parser
{
public:
     SOP_SplitPointParser(UT_String &str, float forcedt, GU_Detail &gdp);
    ~SOP_SplitPointParser() {}

protected:
    virtual void                addPoint(GU_SplitLoc *slvert) = 0;
    virtual void                handleError();

private:
    virtual void                init();
    virtual void                finish();
    virtual bool                dispatch(char c);

    // State handlers
    virtual void                handleStart();
    void                        handleCollectPrim();
    void                        handleCollectVert();
    void                        handleCollectEdge();
    void                        handleCollectT();
    void                        handleCollectP0();
    void                        handleCollectP1();
    void                        handleCollectPT();

    // addSplitLocVert and addSplitLocEdge expect the member variables
    // to be properly setup before they are called.
    bool                        addSplitLocVert();
    bool                        addSplitLocEdge();
    bool                        addSplitLocPoints();

    
    GU_Detail                  &myGdp;

    float                       myT;                    // parametric t
    int                         myPrim;                 // prim index
    int                         myIndex;                // edge or vertex index
    int                         myP0;                   // point index
    int                         myP1;                   // point index

    float                       myForcedT;
};

#endif

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