CL_Sequence.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.
 *
 * NAME:        CL_Sequence.h ( Clip Library, C++)
 *
 * COMMENTS:
 */

#ifndef __CL_Sequence__
#define __CL_Sequence__

#include "CL_API.h"
#include "CL_Track.h"
#include <UT/UT_VectorTypes.h>
#include <SYS/SYS_Types.h>

enum CL_BlendFunction { 
    BLEND_LINEAR=0,
    BLEND_EASE_IN,
    BLEND_EASE_OUT,
    BLEND_COSINE,
    BLEND_CUBIC, 
    BLEND_ADD 
};

#define BLEND_PRESERVE          0
#define BLEND_OVERLAP           1
#define BLEND_INSERT            2

class UT_XformOrder;

class CL_API CL_Sequence 
{
public:

    static int          usesBias(CL_BlendFunction func);

    static int          sequence(fpreal *&result, CL_TrackListC &source, 
                                 int blend_region, fpreal blend_bias,
                                 fpreal step_factor, int mirror,
                                 int blend_type, int iscycle,
                                 fpreal cycle, CL_BlendFunction func,
                                 fpreal partial_first = 1.0,
                                 fpreal partial_last  = 1.0,
                                 int steady_segment = 0,
                                 int *steady_index = 0);

    static int          quatSequence(fpreal *&rx,fpreal *&ry,fpreal *&rz,
                                     CL_TrackListC &sourcex,
                                     CL_TrackListC &sourcey,
                                     CL_TrackListC &sourcez,
                                     int blend_region,fpreal blend_bias,
                                     int blend_type,
                                     fpreal stepx,fpreal stepy,fpreal stepz,
                                     UT_XformOrder order,
                                     CL_BlendFunction blend_function);
    
    static int          transSequence(fpreal *&tx,fpreal *&ty, fpreal *&tz,
                                      CL_TrackListC &sourcex,
                                      CL_TrackListC &sourcey,
                                      CL_TrackListC &sourcez,
                                      int blend_region,
                                      int blend_type);
                                      

    static void         getBlendValues(int nsamples,fpreal *data,fpreal bias,
                                       CL_BlendFunction func);

    static void         getCubicParms(fpreal off1,fpreal val1,fpreal slope1,
                                      fpreal off2,fpreal val2,fpreal slope2, 
                                      UT_Vector4R &result);

    static void         getCubic(int nsamples, fpreal *data, 
                                 fpreal off1,fpreal val1, fpreal slope1,
                                 fpreal off2,fpreal val2, fpreal slope2);
    
    static void         blendQuaternion(fpreal *rx,fpreal *ry,fpreal *rz,
                                        fpreal rx1,fpreal ry1,fpreal rz1,
                                        fpreal rx2,fpreal ry2,fpreal rz2,
                                        fpreal ox, fpreal oy, fpreal oz,
                                        int size, fpreal *blend, fpreal *base,
                                        const UT_XformOrder &order,
                                        const UT_XformOrder &order2);

    static fpreal       blendTranslates(fpreal *trans,
                                        fpreal tp1,fpreal tp2, fpreal tp3,
                                        fpreal tn1,fpreal tn2, fpreal tn3,
                                        int size);

};

#endif