animationparams.h

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//************************************************************************
//                                                                      *
//           Copyright (C)  2004                                        *
//     University Corporation for Atmospheric Research                  *
//           All Rights Reserved                                        *
//                                                                      *
//************************************************************************/
//
//  File:       animationparams.h
//
//  Author:     Alan Norton
//          National Center for Atmospheric Research
//          PO 3000, Boulder, Colorado
//
//  Date:       January 2005
//
//  Description:    Defines the AnimationParams class
//      This is derived from the Params class
//      It contains all the parameters required for animation

//
#ifndef ANIMATIONPARAMS_H
#define ANIMATIONPARAMS_H


#include "params.h"
#include <vapor/common.h>
#include "viewpointparams.h"


namespace VAPoR {
class ExpatParseMgr;
class Keyframe;
class XmlNode;
class ParamNode;
class animate;
class PARAMS_API AnimationParams : public Params {
    
public: 
    AnimationParams(int winnum);
    ~AnimationParams();

    int getCurrentFrameNumber() {
        if (keyframingEnabled()&&getLoadedViewpoints().size() > 0){
            return currentInterpolatedFrame;
        }
        return currentTimestep;
    }

    int getCurrentTimestep() {
        if (keyframingEnabled()&&getLoadedViewpoints().size() > 0){
            return loadedTimesteps[currentInterpolatedFrame];
        }
        return currentTimestep;
    }

    int getStartFrameNumber() {
        if (keyframingEnabled()) return startKeyframeFrame;
        return startFrame;
    }

    int getEndFrameNumber() {
        if (keyframingEnabled()) return endKeyframeFrame;
        return endFrame;
    }

    int getMinTimestep() {return minTimestep;}

    int getMaxTimestep() {return maxTimestep;}

    int getMinFrame() {
        if (keyframingEnabled()) return 0;
        return minTimestep;
    }

    int getMaxFrame() {
        if (keyframingEnabled()) return (loadedViewpoints.size()-1);
        return maxTimestep;
    }


    void setMinTimestep(int minF) {minTimestep = minF;}

    void setMaxTimestep(int maxF) {maxTimestep = maxF;}

    Keyframe* getKeyframe(int index) {return keyframes[index];}
    vector<Keyframe*>& getKeyframes() {return keyframes;}
    void deleteKeyframe(int index);
    void rescaleKeyframes(const float ratio[3]);
        
    void insertKeyframe(int index, Keyframe* keyframe);
    void insertViewpoint(int index, Viewpoint* vp);
        
    int getNumKeyframes() {return keyframes.size();}
    bool keyframingEnabled() {return useKeyframing;}
    void enableKeyframing( bool onoff);
        


#ifndef DOXYGEN_SKIP_THIS

    //Build vectors of viewpoints and timesteps by interpolating keyframes
    void buildViewsAndTimes();
    const vector<Viewpoint*> getLoadedViewpoints() {return loadedViewpoints;}
    void clearLoadedViewpoints(); 
    int getNumLoadedViewpoints(){return loadedViewpoints.size();}
    void addViewpoint(Viewpoint* vp){loadedViewpoints.push_back(vp);}
    void addTimestep(size_t ts){loadedTimesteps.push_back(ts);}
    const Viewpoint* getLoadedViewpoint(int framenum){
        return (loadedViewpoints[framenum%loadedViewpoints.size()]);
    }
    vector<size_t> getLoadedTimesteps() {return loadedTimesteps;}
    //The rest is not part of the public API
    static ParamsBase* CreateDefaultInstance() {return new AnimationParams(-1);}
    const std::string& getShortName() {return _shortName;}
    virtual Params* deepCopy(ParamNode* n = 0);

    virtual void restart();
    static void setDefaultPrefs();
    virtual bool reinit(bool doOverride);

    bool isPlaying() {return (playDirection != 0);}


    int getMinTimeToRender() {return ((int)(1000.f/maxFrameRate) );}
    
    
    int getPlayDirection() {return playDirection;}
    int getFrameStepSize() {return frameStepSize;}
    float getMaxFrameRate() {return maxFrameRate;}
    void setCurrentInterpolatedFrame(int val){
        currentInterpolatedFrame=val;
    }
    int getCurrentInterpolatedFrame(){
        return currentInterpolatedFrame;
    }
    int getFrameIndex(int keyframeIndex);
    void setCurrentFrameNumber(int val) {
        if (keyframingEnabled())
            currentInterpolatedFrame = val;
        else
            currentTimestep = val;
    }
    void setStartFrameNumber(int val) {
        if (keyframingEnabled()){
            startKeyframeFrame=val;
        } else {
            startFrame=val;
        }
    }
    void setEndFrameNumber(int val) {
        if (keyframingEnabled()){
            endKeyframeFrame=val;
            if (val == getLoadedViewpoints().size()-1) endFrameIsDefault = true;
            else endFrameIsDefault=false;
        } else {
            endFrame=val;
        }
    }
    

    bool isRepeating() {return repeatPlay;}
    void setRepeating(bool onOff){repeatPlay = onOff;}
    void setFrameStepSize(int sz){ frameStepSize = sz;}
    void setMaxFrameRate(float val) {maxFrameRate = val;}
    void setPlayDirection(int val){stateChanged = true; playDirection = val;}
    bool isStateChanged() {return stateChanged;}
    //Used when the state changes during a render:
    void setStateChanged(bool state) {stateChanged = state;}

    static float getDefaultMaxFPS() {return defaultMaxFPS;}
    
    static void setDefaultMaxFPS(float val) {defaultMaxFPS = val;}

    //When rendering is finished, renderer calls this.  Returns true no change (if the change bit
    //needs to be set. 
    //It advances the currentFrame to the next one
    bool advanceFrame();
    //set to pause if last frame is done, return true if done.
    bool checkLastFrame();
    int getNextFrame(int dir); //Determine the next frame in the specified direction
    bool usingTimestepList() {return useTimestepSampleList;}
    void setTimestepSampleList(bool on) {useTimestepSampleList = on;}
    std::vector<int>& getTimestepList() { return timestepList;}
    
    ParamNode* buildNode();
    bool elementStartHandler(ExpatParseMgr*, int /* depth*/ , std::string& /*tag*/, const char ** /*attribs*/);
    bool elementEndHandler(ExpatParseMgr*, int /*depth*/ , std::string& /*tag*/);
    
protected:
    vector<Viewpoint*>loadedViewpoints;
    vector<size_t>loadedTimesteps;

    static const string _shortName;
    static const string _repeatAttr;
    static const string _maxRateAttr;
    static const string _stepSizeAttr;
    static const string _startFrameAttr;
    static const string _endFrameAttr;
    static const string _startKeyframeFrameAttr;
    static const string _endKeyframeFrameAttr;
    static const string _currentFrameAttr;
    static const string _currentInterpFrameAttr;
    static const string _maxWaitAttr;
    static const string _keyframesEnabledAttr;
    static const string _keyframeTag;
    static const string _keySpeedAttr;
    static const string _keyTimestepAttr;
    static const string _keyNumFramesAttr;
    static const string _keySynchToTimestepsAttr;
    static const string _keyTimestepsPerFrameAttr;


    int playDirection; //-1, 0, or 1
    bool repeatPlay;
    float maxFrameRate;
    
    int frameStepSize;// always 1 or greater
    int startFrame;
    int endFrame;
    int startKeyframeFrame;
    int endKeyframeFrame;
    bool endFrameIsDefault; //indicate if endKeyframeFrame is at default values.
    int maxTimestep, minTimestep;
    int currentInterpolatedFrame;
    int currentTimestep;
    bool useTimestepSampleList;
    std::vector<int> timestepList;
    //If the animation state is changed, gui needs to update:
    bool stateChanged;
    
    static float defaultMaxFPS;

    //Keyframing state:
    bool useKeyframing;
    std::vector<Keyframe*> keyframes;
    animate* myAnimate;  //used to perform keyframe interpolation

#endif /* DOXYGEN_SKIP_THIS */
    
};
class Keyframe{
public:
    Keyframe(Viewpoint* vp, float spd, int ts, int fnum){
        viewpoint = vp; speed = spd; timeStep = ts; numFrames = fnum; stationaryFlag = false;
        synch = false; timestepsPerFrame = 1;
    }
    Viewpoint* viewpoint;
    float speed;
    int timeStep;
    int numFrames;
    bool stationaryFlag; 
    bool synch;
    int timestepsPerFrame;
};
};

#endif //ANIMATIONPARAMS_H