glwindow.h

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//************************************************************************
//                                                                      *
//           Copyright (C)  2004                                        *
//     University Corporation for Atmospheric Research                  *
//           All Rights Reserved                                        *
//                                                                      *
//************************************************************************/
//
//  File:       glwindow.h
//
//  Author:     Alan Norton
//          National Center for Atmospheric Research
//          PO 3000, Boulder, Colorado
//
//  Date:       July 2004
//
//  Description:  Definition of GLWindow class: 
//  A GLWindow object is embedded in each visualizer window.  It performs basic
//   navigation and resize, and defers drawing to the viz window's list of 
//   registered renderers.

#ifndef GLWINDOW_H
#define GLWINDOW_H
#include <map>
#include "trackball.h"
#include <qthread.h>
#include <QMutex>
#include <jpeglib.h>
#include "qcolor.h"
#include "qlabel.h"
#include "params.h"
#include "manip.h"
#include <vapor/MyBase.h>
#include <vapor/common.h>
#include "datastatus.h"
#include "ShaderMgr.h"

//No more than 20 renderers in a window:
//Eventually this may be dynamic.
#define MAXNUMRENDERERS 20

class QLabel;
class QThread;


namespace VAPoR {
typedef bool (*renderCBFcn)(int winnum, bool newCoords);
class SpinTimer;
class ViewpointParams;
class RegionParams;
class DvrParams;
class AnimationParams;
class FlowParams;
class ProbeParams;
class TwoDDataParams;
class TwoDImageParams;
class Renderer;
class TranslateStretchManip;
class TranslateRotateManip;
class FlowRenderer;
class VolumeRenderer;
class TextObject;

class RENDER_API GLWindow : public MyBase, public QGLWidget
{
public:

    void setDirtyBit(DirtyBitType t, bool val);

    bool vizIsDirty(DirtyBitType t);

    ViewpointParams* getActiveViewpointParams() {return (ViewpointParams*)getActiveParams(Params::_viewpointParamsTag);}

    RegionParams* getActiveRegionParams() {return (RegionParams*)getActiveParams(Params::_regionParamsTag);}

    AnimationParams* getActiveAnimationParams() {return (AnimationParams*)getActiveParams(Params::_animationParamsTag);}

    void TransformToUnitBox();

    //MouseMode support
    static int getModeManipType(int modeIndex){
        return manipFromMode[modeIndex];
    }
    static ParamsBase::ParamsBaseType getModeParamType(int modeIndex){
        return paramsFromMode[modeIndex];
    }

    static int getModeFromParams(ParamsBase::ParamsBaseType t){return modeFromParams[t];}

    static const string& getModeName(int index) {return modeName[index];}

    static int AddMouseMode(const std::string paramsTag, int manipType, const char* name);

    static void ConvertAxes(bool toLatLon, const int ticDirs[3], const double fromMinTic[3], const double fromMaxTic[3], const double fromOrigin[3], const double fromTicLength[3],
        double toMinTic[3],double toMaxTic[3], double toOrigin[3], double toTicLength[3]);

    //Added for FTGL 
    //Add a textObject to the set of text to be used.  Return its index.
    int addTextObject(Renderer*, const char* fontPath, int textSize, float textColor[4], float bgColor[4], int type, string text); 
    //Add an instance of text at specified position, using specified object
    void addText(Renderer*, int objectNum, float posn[3]);
    void clearTextObjects(Renderer*);
    //Check whether the textObjects have been built for this renderer
    bool isTextValid(Renderer* ren) {return textValidFlag[ren];}
    void setTextValid(Renderer* ren, bool val) {textValidFlag[ren] = val;}

#ifndef DOXYGEN_SKIP_THIS
     GLWindow( QGLFormat& fmt, QWidget* parent, int winnum);
    ~GLWindow();
    Trackball* myTBall;
    
    Trackball* getTBall() {return myTBall;}
    void setPerspective(bool isPersp) {perspective = isPersp;}
    bool getPerspective() {return perspective;}

    //Enum describes various mouse modes:
    enum mouseModeType {
        unknownMode=1000,
        navigateMode=0,
        regionMode=1,
        probeMode=3,
        twoDDataMode=4,
        twoDImageMode=5,
        rakeMode=2,
        barbMode=7,
        isolineMode=6
    };

    //Reset the GL perspective, so that the near and far clipping planes are wide enough
    //to view twice the entire region from the current camera position.  If the camera is
    //inside the doubled region, region, make the near clipping plane 1% of the region size.

    void resetView(ViewpointParams* vpParams);
    void setMaxSize(float wsize) {maxDim = wsize;}
    void setCenter(float cntr[3]) { wCenter[0] = cntr[0]; wCenter[1] = cntr[1]; wCenter[2] = cntr[2];}
    //Test if the screen projection of a 3D quad encloses a point on the screen.
    //The 4 corners of the quad must be specified in counter-clockwise order
    //as viewed from the outside (pickable side) of the quad.  
    //
    bool pointIsOnQuad(float cor1[3],float cor2[3],float cor3[3],float cor4[3], float pickPt[2]);

    //Determine if a point is over (and not inside) a box, specified by 8 3-D coords.
    //the first four corners are the counter-clockwise (from outside) vertices of one face,
    //the last four are the corresponding back vertices, clockwise from outside
    //Returns index of face (0..5), or -1 if not on Box
    //
    int pointIsOnBox(float corners[8][3], float pickPt[2]);

    //Project a 3D point (in cube coord system) to window coords.
    //Return true if in front of camera
    //
    bool projectPointToWin(float cubeCoords[3], float winCoords[2]){
        double cCoords[3], wCoords[2];
        for (int i = 0; i<3; i++) cCoords[i] = cubeCoords[i];
        bool rc = projectPointToWin(cCoords,wCoords);
        winCoords[0]=wCoords[0];winCoords[1]=wCoords[1];
        return rc;
    }
    bool projectPointToWin(double cubeCoords[3], double winCoords[2]);

    // Project the current mouse coordinates to a line in screen space.
    // The line starts at the mouseDownPosition, and points in the
    // direction resulting from projecting to the screen the axis 
    // associated with the dragHandle.  Returns false on error.

    bool projectPointToLine(float mouseCoords[2], float projCoords[2]);

    //Params argument is the params that owns the manip
    bool startHandleSlide(float mouseCoords[2], int handleNum, Params* p);
    
    //Determine a unit direction vector associated with a pixel.  Uses OpenGL screencoords
    // I.e. y = 0 at bottom.  Returns false on failure.
    //
    bool pixelToVector(float winCoords[2], const float cameraPos[3], float dirVec[3]);

    //Get the current image in the front buffer;
    bool getPixelData(unsigned char* data);

    void setRenderNew() {renderNew = true;}
    void draw3DCursor(const float position[3]);

    void renderTimeStamp(bool rebuild);
    void buildTimeStampImage();
    
    //Get/set methods for vizfeatures
    bool useLatLonAnnotation() {return latLonAnnot;}
    void setLatLonAnnotation(bool val){ latLonAnnot = val;}
    QColor getBackgroundColor() {return DataStatus::getInstance()->getBackgroundColor();}
    QColor getRegionFrameColor() {return DataStatus::getInstance()->getRegionFrameColor();}
    QColor getSubregionFrameColor() {return DataStatus::getInstance()->getSubregionFrameColor();}
    QColor& getColorbarBackgroundColor() {return colorbarBackgroundColor;}
    bool axisArrowsAreEnabled() {return axisArrowsEnabled;}
    bool axisAnnotationIsEnabled() {return axisAnnotationEnabled;}
    
    const vector<bool> getColorbarEnabled() {return colorbarEnabled;}
    void setColorbarEnabled(const vector<bool> vb) {colorbarEnabled = vb;}
    void setColorbarTitles(const vector<string> vs) {colorbarTitles = vs;}
    const vector<string> getColorbarTitles() {return colorbarTitles;}
    
    bool regionFrameIsEnabled() {return DataStatus::getInstance()->regionFrameIsEnabled();}
    bool subregionFrameIsEnabled() {return DataStatus::getInstance()->subregionFrameIsEnabled();}
    float getAxisArrowCoord(int i){return axisArrowCoord[i];}
    double getAxisOriginCoord(int i){return axisOriginCoord[i];}
    double getMinTic(int i){return minTic[i];}
    double getMaxTic(int i){return maxTic[i];}
    double getTicLength(int i){return ticLength[i];}
    int getNumTics(int i){return numTics[i];}
    int getTicDir(int i){return ticDir[i];}
    int getLabelHeight() {return labelHeight;}
    int getLabelDigits() {return labelDigits;}
    float getTicWidth(){return ticWidth;}
    QColor& getAxisColor() {return axisColor;}
    const vector<float> getColorbarLLX() {return colorbarLLX;}
    const vector<float> getColorbarLLY() {return colorbarLLY;}
    float getColorbarSize(int i) {return colorbarSize[i];}
    int getColorbarNumTics() {return numColorbarTics;}
    int getColorbarDigits() {return colorbarDigits;}
    int getColorbarFontsize() {return colorbarFontsize;}
        

    int getTimeAnnotType() {return timeAnnotType;}
    int getTimeAnnotTextSize() {return timeAnnotTextSize;}
    float getTimeAnnotCoord(int j){return timeAnnotCoords[j];}
    QColor getTimeAnnotColor(){return timeAnnotColor;}
    void setTimeAnnotTextSize(int size){timeAnnotTextSize = size;}
    void setTimeAnnotColor(QColor c) {timeAnnotColor = c;}
    void setTimeAnnotType(int t) {timeAnnotType = t;}
    void setTimeAnnotCoords(float crds[2]){
        timeAnnotCoords[0] = crds[0]; 
        timeAnnotCoords[1] = crds[1];
    }

    void setBackgroundColor(QColor& c) {DataStatus::getInstance()->setBackgroundColor(c);}
    void setColorbarBackgroundColor(QColor& c) {colorbarBackgroundColor = c;}
    void setRegionFrameColor(QColor& c) {DataStatus::getInstance()->setRegionFrameColor(c);}
    void setSubregionFrameColor(QColor& c) {DataStatus::getInstance()->setSubregionFrameColor(c);}
    void enableAxisArrows(bool enable) {axisArrowsEnabled = enable;}
    void enableAxisAnnotation(bool enable) {axisAnnotationEnabled = enable;}
    
    void enableRegionFrame(bool enable) {DataStatus::getInstance()->enableRegionFrame(enable);}
    void enableSubregionFrame(bool enable) {DataStatus::getInstance()->enableSubregionFrame(enable);}
    
    void setAxisArrowCoord(int i, float val){axisArrowCoord[i] = val;}
    void setAxisOriginCoord(int i, double val){axisOriginCoord[i] = val;}
    void setNumTics(int i, int val) {numTics[i] = val;}
    void setTicDir(int i, int val) {ticDir[i] = val;}
    void setMinTic(int i, double val) {minTic[i] = val;}
    void setMaxTic(int i, double val) {maxTic[i] = val;}
    void setTicLength(int i, double val) {ticLength[i] = val;}
    void setLabelHeight(int h){labelHeight = h;}
    void setLabelDigits(int d) {labelDigits = d;}
    void setTicWidth(float w) {ticWidth = w;}
    void setAxisColor(QColor& c) {axisColor = c;}
    void setDisplacement(float val){displacement = val;}
    float getDisplacement() {return displacement;}
    void setColorbarLLX(const vector<float> crds) {colorbarLLX = crds;}
    void setColorbarLLY(const vector<float> crds) {colorbarLLY = crds;}
    void setColorbarSize(int i, float crd) {colorbarSize[i] = crd;}
    void setColorbarNumTics(int i) {numColorbarTics = i;}
    bool colorbarIsDirty() {return colorbarDirty;}
    bool timeAnnotIsDirty() {return timeAnnotDirty;}
    void setColorbarDirty(bool val){colorbarDirty = val;}
    void setTimeAnnotDirty(bool val){timeAnnotDirty = val;}
    void setColorbarDigits(int ndigs) {colorbarDigits = ndigs;}
    void setColorbarFontsize(int fsize) {colorbarFontsize = fsize;}
    void setAxisLabelsDirty(bool val){axisLabelsDirty = val;}
    void setTextRenderersDirty(bool val){textRenderersDirty = val;}
    bool textRenderersAreDirty()  {return textRenderersDirty;}
    bool axisLabelsAreDirty(){return axisLabelsDirty;}


    bool mouseIsDown() {return mouseDownHere;}
    void setMouseDown(bool downUp) {mouseDownHere = downUp;}

    void setNumRenderers(int num) {numRenderers = num;}
    int getNumRenderers() { return numRenderers;}
    Params::ParamsBaseType getRendererType(int i) {return renderType[i];}

    Renderer* getRenderer(int i) {return renderer[i];}
    Renderer* getRenderer(RenderParams* p);
    
    //Renderers can be added early or late, using a "render Order" parameter.
    //The order is between 0 and 10; lower order gets rendered first.
    //Sorted renderers get sorted before each render
    //
    void insertSortedRenderer(RenderParams* p, Renderer* ren){insertRenderer(p, ren, 5);}
    void prependRenderer(RenderParams* p, Renderer* ren) {insertRenderer(p, ren, 0);}
    void appendRenderer(RenderParams* p, Renderer* ren){insertRenderer(p, ren, 10);}
    void insertRenderer(RenderParams* p, Renderer* ren, int order);
    bool removeRenderer(RenderParams* p);  //Return true if successful
    void removeAllRenderers();
    void sortRenderers(int timestep);  //Sort all the pri 0 renderers
    
    void removeDisabledRenderers();  //Remove renderers whose params are disabled
    //Find a renderParams in renderer list, if it exists:
    RenderParams* findARenderer(Params::ParamsBaseType renderertype);
    
    static int getCurrentMouseMode() {return currentMouseMode;}
    static void setCurrentMouseMode(int t){currentMouseMode = t;}
    //The glwindow keeps a copy of the params that are currently associated with the current
    //instance.  This needs to change during:
    //  -loading session
    //  -undo/redo
    //  -changing instance
    //  -reinit
    //  -new visualizer
    
    void setActiveViewpointParams(Params* p) {setActiveParams(p,Params::_viewpointParamsTag);}
    void setActiveRegionParams(Params* p) {
        setActiveParams(p,Params::_regionParamsTag);
        getManip(Params::_regionParamsTag)->setParams(p);
    }
    void setActiveAnimationParams(Params* p) {setActiveParams(p,Params::_animationParamsTag);}

    
    FlowParams* getActiveFlowParams() {return (FlowParams*)getActiveParams(Params::_flowParamsTag);}
    ProbeParams* getActiveProbeParams() {return (ProbeParams*)getActiveParams(Params::_probeParamsTag);}
    TwoDDataParams* getActiveTwoDDataParams() {return (TwoDDataParams*)getActiveParams(Params::_twoDDataParamsTag);}
    TwoDImageParams* getActiveTwoDImageParams() {return (TwoDImageParams*)getActiveParams(Params::_twoDImageParamsTag);}

    vector<Params*> currentParams;
    Params* getActiveParams(ParamsBase::ParamsBaseType pType) {return currentParams[pType];}
    Params* getActiveParams(const std::string& tag) {return currentParams[Params::GetTypeFromTag(tag)];}
    void setActiveParams(Params* p, ParamsBase::ParamsBaseType pType){
        currentParams[pType] = p;
    }
    void setActiveParams(Params* p, const std::string& tag){
        currentParams[Params::GetTypeFromTag(tag)] = p;
    }

    //The GLWindow keeps track of the renderers with an ordered list of them
    //as well as with a map from renderparams to renderer
    
    void mapRenderer(RenderParams* rp, Renderer* ren){rendererMapping[rp] = ren;}
    bool unmapRenderer(RenderParams* rp);
    
    //Determine the approximate size of a pixel in terms of viewer coordinates.
    float getPixelSize();
    bool viewerCoordsChanged() {return newViewerCoords;}
    void setViewerCoordsChanged(bool isNew) {newViewerCoords = isNew;}
    bool isCapturingImage() {return (capturingImage != 0);}
    bool isCapturingFlow() {return (capturingFlow);}
    bool isSingleCapturingImage() {return (capturingImage == 1);}
    void startImageCapture(QString& name, int startNum, bool isTif) {
        capturingImage = 2;
        captureNumImage = startNum;
        captureNameImage = name;
        newCaptureImage = true;
        capturingTif = isTif;
        previousFrameNum = -1;
        previousTimeStep = -1;
        update();
    }
    void startFlowCapture(QString& name) {
        capturingFlow = true;
        captureNameFlow = name;
        update();
    }
    void singleCaptureImage(QString& name){
        capturingImage = 1;
        captureNameImage = name;
        newCaptureImage = true;
        update();
    }
    bool captureIsNewImage() { return newCaptureImage;}
    
    void setCaptureNewImage(bool isNew){ newCaptureImage = isNew;}
    
    void stopImageCapture() {capturingImage = 0;}
    void stopFlowCapture() {capturingFlow = false;}
    //Routine is called at the end of rendering.  If capture is 1 or 2, it converts image
    //to jpeg and saves file.  If it ever encounters an error, it turns off capture.
    //If capture is 1 (single frame capture) it turns off capture.
    void doFrameCapture();
    QString& getFlowFilename(){return captureNameFlow;}
    

    TranslateStretchManip* getManip(const std::string& paramTag){
        int mode = getModeFromParams(ParamsBase::GetTypeFromTag(paramTag));
        return manipHolder[mode];
    }
    

    void setPreRenderCB(renderCBFcn f){preRenderCB = f;}
    void setPostRenderCB(renderCBFcn f){postRenderCB = f;}
    static int getJpegQuality();
    static void setJpegQuality(int qual);
    static bool depthPeelEnabled() {return depthPeeling;}
    static void enableDepthPeeling(bool val) {depthPeeling = val;}
    static bool getDefaultAxisArrowsEnabled(){return defaultAxisArrowsEnabled;}
    static void setDefaultAxisArrows(bool val){defaultAxisArrowsEnabled = val;}
    static bool getDefaultTerrainEnabled(){return defaultTerrainEnabled;}
    static bool getDefaultSpinAnimateEnabled(){return defaultSpinAnimateEnabled;}
    static void setDefaultShowTerrain(bool val){defaultTerrainEnabled = val;}
    static void setDefaultSpinAnimate(bool val){defaultSpinAnimateEnabled = val;}
    static void setDefaultPrefs();
    int getWindowNum() {return winNum;}
    
    //Static methods so that the vizwinmgr can tell the glwindow about
    //current active visualizer, and about region sharing
    static int getActiveWinNum() { return activeWindowNum;}
    static void setActiveWinNum(int winnum) {activeWindowNum = winnum;}
    bool windowIsActive(){return (winNum == activeWindowNum);}
    static bool activeWinSharesRegion() {return regionShareFlag;}
    static void setRegionShareFlag(bool regionIsShared){regionShareFlag = regionIsShared;}
    
    
    const GLdouble* getProjectionMatrix() { return projectionMatrix;}   
    
    void getNearFarClippingPlanes(GLfloat *nearplane, GLfloat *farplane) {
        *nearplane = nearDist; *farplane = farDist;
    }

    
    const GLint* getViewport() {return viewport;}

    enum OGLVendorType {
        UNKNOWN = 0,
        MESA,
        NVIDIA,
        ATI,
        INTEL
    };
    static OGLVendorType GetVendor();

    void startSpin(int renderMS);
    //Terminate spin, return true if successful
    bool stopSpin();
    bool spinning(){return isSpinning;}

    void clearRendererBypass(Params::ParamsBaseType t);
    //Following is intended to prevent conflicts between concurrent
    //opengl threads.  Probably it should be protected by a semaphore 
    //For now, leave it and see if problems occur.
    static bool isRendering(){return nowPainting;}
    void setValuesFromGui(ViewpointParams* vpparams);
    static void setSpinAnimation(bool on){spinAnimate = on;}
    static bool spinAnimationEnabled(){return spinAnimate;}
    QMutex renderMutex;  //prevent recursive rendering
    bool isControlled;
    //Depth peeling data
    GLint maxbuffers;
    GLuint fboA;
    GLuint fboB;
    GLuint currentBuffer;
    GLuint currentDepth;
    GLint currentLayer;
    GLuint depthA, depthB;
    GLuint *layers;
    int depthWidth, depthHeight, depthTexUnit;
    ShaderMgr* getShaderMgr() {return manager;}
    void depthPeelPaintEvent();
    void renderScene(float extents[6], float minFull[3], float maxFull[3], int timeStep);
    void regPaintEvent();
    bool peelInitialized;
    bool isDepthPeeling(){return depthPeeling;}
    int getColorbarIndex(ParamsBase::ParamsBaseType t){
        for (int i = 0; i< rendererTypeLookup.size(); i++){
            if (rendererTypeLookup[i] == t) return i;
        }
        return -1;
    }
protected:
    
    QImage glTimeStampImage;
    SpinTimer *mySpinTimer;
    ShaderMgr *manager;
    //Mouse Mode tables.  Static since independent of window:
    static vector<ParamsBase::ParamsBaseType> paramsFromMode;
    static vector<int> manipFromMode;
    static vector<string> modeName;
    static map<ParamsBase::ParamsBaseType, int> modeFromParams;
    //There's a separate manipholder for each window
    vector<TranslateStretchManip*> manipHolder;
    //Register a manip, including an icon and text
    //Icon must be specified as an xpm or null
    //Manip type is : 0 for navigation (nothing) 1 for 3D translate/stretch, 2 for 2D translate/stretch, 3 for 3D rotate/stretch

    //Container for sorting renderer list:
    class RenderListElt {
        public:
        Renderer* ren;
        float camDist;
        Params::ParamsBaseType renType;
    };
    static bool renderPriority(RenderListElt* ren1, RenderListElt* ren2){
        return (ren1->camDist > ren2->camDist);
    }
    int hasColorbarIndex(RenderParams* p){
        if (!p->isEnabled()) return -1;
        if (!p->UsesMapperFunction()) return -1;
        if (p != Params::GetCurrentParamsInstance(p->GetParamsBaseTypeId(), winNum)) return -1;
        for (int i = 0; i< rendererTypeLookup.size(); i++){
            if (rendererTypeLookup[i] == p->GetParamsBaseTypeId()){
                if (colorbarEnabled[i]) return i;
                else return -1;
            }
        }
        return -1;
    }
    //This method converts lon lat to user coords, assuming a "flat" earth so axes will not wrap.
    static void flatConvertFromLonLat(double x[2], double minLon, double maxLon, double minX, double maxX);
    std::vector<QImage> axisLabels[3];
    
    bool axisLabelsDirty;
    bool textRenderersDirty;
    static bool depthPeeling;
    int winNum;
    int previousTimeStep;
    int previousFrameNum;
    static int jpegQuality;
    //Following flag is set whenever there is mouse navigation, so that we can use 
    //the new viewer position
    //at the next rendering
    bool newViewerCoords;
    static int currentMouseMode;
    std::map<DirtyBitType,bool> vizDirtyBit; 
    Renderer* renderer[MAXNUMRENDERERS];
    Params::ParamsBaseType renderType[MAXNUMRENDERERS];
    int renderOrder[MAXNUMRENDERERS];

    //Map params to renderer for set/get dirty bits, etc:
    
    std::map<RenderParams*,Renderer*> rendererMapping;

    int numRenderers;
    //Picking helper functions, saved from last change in GL state.  These
    //Deal with the cube coordinates (known to the trackball)
    //openGL model matrix is kept in the viewpointparams, since
    //it may be shared (global)
    //
    GLdouble* getModelMatrix();
        
    GLfloat tcoord[2];
    
    GLfloat* setTexCrd(int i, int j);
    
    //These methods cannot be overridden, but the initialize and paint methods
    //call the corresponding Renderer methods.
    //
    void        initializeGL();
  
    void        resizeGL( int w, int h );

    //Following QT 4 guidance (see bubbles example), opengl painting is performed
    //in paintEvent(), so that we can paint nice text over the window.
    // GLWindow::paintGL() is not implemented.
    // The other changes include:
    // GL_MULTISAMPLE is enabled
    // GLWindow::updateGL() is replaced by GLWindow::update()
    // resizeGL() contents have been moved to setUpViewport(), which is also called 
    // from paintEvent().
    // setAutoFillBackground(false) is called in the GLWindow constructor

    void paintEvent(QPaintEvent* event);
#ifdef  Darwin
    bool event ( QEvent * e );
#endif

        
    void setUpViewport(int width, int height);
    //Methods to support drawing domain bounds, axes etc.
    //Set colors to use in domain-bound rendering:
    void setSubregionFrameColorFlt(const QColor& c);
    void setRegionFrameColorFlt(const QColor& c);
    //Draw the region bounds and frame it in full domain.
    //Arguments are in unit cube coordinates
    void renderDomainFrame(float* extents, float* minFull, float* maxFull);
    
    void drawSubregionBounds(float* extents);
    void drawAxisArrows(float* extents);
    void drawAxisTics(int tstep);
    void drawAxisLabels(int tstep);
    void buildAxisLabels(int tstep);
    
    void placeLights();
    
    //Helper functions for drawing region bounds:
    static float* cornerPoint(float* extents, int faceNum);
    // Faces of the cube are numbered 0..5 based on view from pos z axis:
    // back, front, bottom, top, left, right
    static bool faceIsVisible(float* extents, float* viewerCoords, int faceNum);

    
    //Render all the text; build textobjects if necessary.
    void renderText();
    float regionFrameColorFlt[3];
    float subregionFrameColorFlt[3];

    float   wCenter[3]; //World center coords
    float   maxDim;     //Max of x, y, z size in world coords
    bool perspective;   //perspective vs parallel coords;
    bool oldPerspective;
    //Indicate if the current render is different from previous,
    //Used for frame capture:
    bool renderNew;
    //Moved over from vizwin:
    int capturingImage;
    int captureNumImage;
    bool capturingFlow;
    bool capturingTif;
    //Flag to set indicating start of capture sequence.
    bool newCaptureImage;
    QString captureNameImage;
    QString captureNameFlow;
    //Set the following to force a call to resizeGL at the next call to
    //updateGL.
    bool needsResize;
    float farDist, nearDist;

    GLint viewport[4];
    GLdouble projectionMatrix[16];
    static bool nowPainting;

    //values in vizFeature
    QColor colorbarBackgroundColor;


    int timeAnnotType;
    int timeAnnotTextSize;
    float timeAnnotCoords[2];
    QColor timeAnnotColor;
    
    bool axisArrowsEnabled;
    bool axisAnnotationEnabled;
    int colorbarDigits;
    int colorbarFontsize;
    
    float axisArrowCoord[3];
    double axisOriginCoord[3];
    double minTic[3];
    double maxTic[3];
    double ticLength[3];
    int ticDir[3];
    int numTics[3];
    int labelHeight, labelDigits;
    float ticWidth;
    QColor axisColor;
    float displacement;

    vector<float> colorbarLLX;
    vector<float> colorbarLLY;
    vector<bool> colorbarEnabled;
    vector<string>colorbarTitles;
    float colorbarSize[2];
    int numColorbarTics;
    bool colorbarDirty;
    bool timeAnnotDirty;
    bool mouseDownHere;
    bool latLonAnnot;


    renderCBFcn preRenderCB;
    renderCBFcn postRenderCB;

    static int activeWindowNum;
    //This flag is true if the active window is sharing the region.
    //If the current window is not active, it will still share the region, if
    //the region is shared, and the active region is shared.
    static bool regionShareFlag;
    static bool defaultTerrainEnabled;
    static bool defaultSpinAnimateEnabled;
    static bool spinAnimate;
    static bool defaultAxisArrowsEnabled;
    
    
    int axisLabelNums[3];

    //state to save during handle slide:
    // screen coords where mouse is pressed:
    float mouseDownPoint[2];
    // unit vector in direction of handle
    float handleProjVec[2];
    bool isSpinning;
    GLuint _timeStampTexid;

private:
    bool _readyToDraw;
    void makeWriter();
    
    map<Renderer*,vector<TextObject*> > textObjectMap;
    map<Renderer*, bool> textValidFlag;
    map< pair<Renderer*, int> , vector<float*>* > textCoordMap;
    std::vector<int> rendererTypeLookup;
    
    
#endif //DOXYGEN_SKIP_THIS
    
};

};

#endif // GLWINDOW_H