source: golgotha/src/maxtool/sdk_inc/keyreduc.h @ 80 Tweet

/**********************************************************************
 *<
        FILE: keyreduc.h

        DESCRIPTION:  Key reduction

        CREATED BY: Rolf Berteig

        HISTORY: created 9/30/95

 *>     Copyright (c) 1994, All Rights Reserved.
 **********************************************************************/

#ifndef __KEYREDUC__
#define __KEYREDUC__

#define DEFULAT_KEYREDUCE_THRESHOLD             (0.5f)

// Values returned from Progress
#define KEYREDUCE_ABORT         -1              // Stops processing and undoes any key reduction
#define KEYREDUCE_STOP          0               // Stops processing, but keeps any reduction done so far
#define KEYREDUCE_CONTINUE      1               // Keeps going.

// A callback so progress can be made during key reduction
class KeyReduceStatus {
        public:
                // Called once before reduction starts. 'total' is the number
                // reduction canidate keys.
                virtual void Init(int total)=0;

                // Called every now and again. 'p' is the number of keys
                // processed. So % done is p/total * 100.               
                virtual int Progress(int p)=0;
        };

// Attempts to delete keys that lie within the given time range.
// The controller will be sampled within the range in 'step' size
// increments. After the key reduction, the controller's values
// at each step are gauranteed to be withen 'threshold' distance
// from their original values.
//
CoreExport int ApplyKeyReduction(
                Control *cont,Interval range,float thresh,TimeValue step,
                KeyReduceStatus *status);


#endif  //__KEYREDUC__