source: GTP/trunk/Lib/Geom/shared/GeoTool/include/GeoMeshView.h @ 1549

// generated by Fast Light User Interface Designer (fluid) version 2.0100
#ifndef GeoMeshView_h
#define GeoMeshView_h
#include "GL/glew.h"
#ifdef _WIN32
#include "GL/wglew.h"
#endif

#include        <fltk/events.h>
#include        <stdlib.h>
#include        <time.h>
#include        <iostream>
#include        <glut.h>
#include        <fltk/GlWindow.h>
#include        <GeoVertexBuffer.h>
#include        <GeoMesh.h>
#include        <GeoMeshSaver.h>
#include        <GeoMeshViewUI.h>

namespace Geometry{ class LodTreeLibrary; }

using   namespace       Geometry;
using   namespace       std;

class GeoMeshView : public fltk::GlWindow
{
        friend  class   GeoMeshViewUI;

        public:

        // this value determines the scaling factor used to draw the cube.
        double  size;
        double  mScaleFactor;
        bool            mWire;
        bool            mSolid;
        bool            mCW;
        bool            mCCW;
        bool            mPan;
        bool            mRotate;
        bool            mLodStrip;
        bool            mLodTree;

        GeoMeshView(int                                         x,
                                                        int                                             y,
                                                        int                                             w,
                                                        int                                             h,
                                                        const   char            *l                                                      =       0,
                                                        GeoMeshViewUI   *geoMeshViewUI  =       0);

        /*      This function is callalled by the zoom slider
         *      
         */
        void scale(double factor){size  =       factor;};

        /* Set the rotation about the vertical (y ) axis.
         *
         * This function is called by the horizontal roller in GeoMeshViewUI
         * and the initialize button in GeoMeshViewUI.
         */
        void v_angle(float angle){vAng  =       angle;};
        
        // Return the rotation about the vertical (y ) axis.
        float v_angle(){return vAng;};
        
        /* Set the rotation about the horizontal (x ) axis.
         *
         * This function is called by the vertical roller in GeoMeshViewUI
         and the
         * initialize button in GeoMeshViewUI.
         */
        void h_angle(float angle){hAng  =       angle;};
        
        // the rotation about the horizontal (x ) axis.
        float h_angle(){return hAng;};
        
        /* Sets the x shift of the cube view camera.
         *
         * This function is called by the slider in GeoMeshViewUI and the
         * initialize button in GeoMeshViewUI.
         */
        void panx(float x){xshift       =       x;};
        
        /* Sets the y shift of the cube view camera.
         *
         * This function is called by the slider in GeoMeshViewUI and the
         * initialize button in GeoMeshViewUI.
         */
        void pany(float y){yshift       =       y;};

        //      Wire model.
        void    activeWire(){mWire      =       true;};
        void    deactiveWire(){mWire    =       false;};

        //      Solid model.
        void    activeSolid(){mSolid    =       true;};
        void    deactiveSolid(){mSolid  =       false;};

        //      Clockwise mode.
        void    activeCW(){mCW  =       true;};
        void    deactiveCW(){mCW        =       false;};

        //      Counter Clockwise mode.
        void    activeCCW(){mCCW        =       true;}
        void    deactiveCCW(){mCCW      =       false;}

        //      Pan mode.
        void    activePan(){mPan        =       true;}
        void    deactivePan(){mPan      =       false;}

        //      Rotate mode.
        void    activeRotate(){mRotate  =       true;}
        void    deactiveRotate(){mRotate        =       false;}

        //      LodStrip mode.
        void    activeLodStrip(){mLodStrip      =       true;}
        void    deactiveLodStrip(){mLodStrip    =       false;}

        //      LodTree mode.
        void    activeLodTree(){mLodTree        =       true;}
        void    deactiveLodTree(){mLodTree      =       false;}

        //      Ilumination modes.
        void    flat(){glShadeModel(GL_FLAT);};
        void    smooth(){glShadeModel(GL_SMOOTH);};

        //      Change Open GL context.
#ifdef _WIN32
        HDC hOldDC;
        HGLRC hOldRC;
#endif
        void    saveContext()
        {
#ifdef _WIN32
                hOldDC = wglGetCurrentDC();
                hOldRC = wglGetCurrentContext();
#endif
        }

        void    restoreContext()
        {
#ifdef _WIN32
                wglMakeCurrent( hOldDC, hOldRC );
#endif
        }

        //      Fits the object in the window view.
        void    fit()
        {
                vAng            = 0.0;
                hAng            =       0.0;
                size            =       0.0;
                xshift  =       0.0;
                yshift  =       0.0;
        };

        /* Sets the Mesh to display.
        */
        void    setMesh(Geometry::Mesh  *geomesh);

        /* The widget class draw() override.
         * The draw() function initialize Gl for another round of
         * drawing then calls specialized functions for drawing each
         * of the entities displayed in the cube view.
         */
        void draw();

        //      Gets the bounding box.
        //Geometry::GeometryBounds      getBoundingBox();

        //      Store one random color to each strip.
        void    setStripColors();

        //      Get the number of frames per second.
        size_t  getFPS();

        //      Sets the submesh selected.
        void    setSubMeshSelected(int submeshIndex);

        //      Sets the leaves submesh index.
        void    setLeavesSubMesh(int submeshIndex);

        //      Gets the leaves submesh index.
        int     getLeavesSubMesh();

        //      Gets the triangle count of the current lod.
        size_t  getLodStripsTriangleCount();
        
        //      Sets the lodstripslibrary object.
        void    setLodStripsLibrary(Geometry::LodStripsLibrary *lodstrips);

        //      Sets the lodtreeslibrary object.
        void    setLodTreesLibrary(Geometry::LodTreeLibrary *lodtrees);

        //      Change de Level of detail of the object.
        void    GoToLod_LodStrip(float lod);
        void    GoToLod_LodTree(float lod);
        
        // load a image file as a texture
        void    LoadTexture(const char *);
        void    LoadTextureSubMesh(int isubmesh, const char *);
        void    addTexFile(const char *);
        void    changeTexFile(int isubmesh, const char *);

        int getSubMeshCount(void) const { return mSubMeshCount; }
        void resetTextures(void);
        int findLeavesSubMesh(void);

        private:
        /* Draw the cube boundaries
         * Draw the faces of the cube using the boxv[] vertices, using
         * GL_LINE_LOOP for the faces. The color is #defined by
         * CUBECOLOR.
         */

        //      GeoMeshViewUI.
        GeoMeshViewUI   *mGeoMeshViewUI;

        //      LodStrips library object.
        Geometry::LodStripsLibrary      *lodStripsLib;
        //      LodTree library object.
        Geometry::LodTreeLibrary        *lodTreeLib;
        
        //      Flag tha activate / deactivate the color strips.
        bool    colorStripsFlag;

        // Stores the index of the mesh to paint of red color.
        int             mSubMeshSelected;

        //      Frames per second.
        size_t  mFPS;

        //      StartTime for FPS.
        clock_t mStartTime;

        float           xMed;
        float           yMed;
        float           zMed;

        int                     leavesSubMesh;
        
        //      Submesh count.
        int                     mSubMeshCount;

        //      Mesh to show.
        Geometry::Mesh  *geoMesh;

        // Current texture handle (OpenGL handle: 0=no texture)
        GLuint current_texture;
        GLuint *current_texture_submesh;
        bool use_texture_mapping; // this flag enables texture mapping when a texture is loaded
        bool SetTextureRenderingState(int submesh); // returns true if textures must be used

        virtual int     handle(int event);

        //      Paint the mesh object.
        void    drawGeoMesh(bool paintWire);
        void    drawTriangleList(int submesh, bool selectedMesh, bool paintWire);
        void    drawTriangleStrip(int submesh);
        void    drawLodStrip();
        void    drawLodTree();
        void    enableColorStrips();
        void    disableColorStrips();
        void    enableTextureMapping(){ use_texture_mapping=true; }
        void    disableTextureMapping(){ use_texture_mapping=false; }
        bool    isTextureMappingEnabled(){ return use_texture_mapping; }
        bool    getColorStrips();

        //      Calculate the number of frames per second.
        void    calcFPS();

        //      Copy the mesh vertices to the vertex array.
        void    refreshVertices(Geometry::Mesh  *geomesh);

        float   vAng;
        float   hAng;
        float   xshift;
        float   yshift;
        int                     mMouseX;
        int                     mMouseY;
        int                     mSizeY;
        GLfloat **mPosArray;
        GLfloat **mNorArray;
        GLfloat **mTexCoordArray;
        GLfloat *mSharedPosArray;
        GLfloat *mSharedNorArray;
        GLfloat *mSharedTexCoordArray;
        GLuint  **mIndexArray;

        struct  ColorElement
        {
                float   r;
                float   g;
                float   b;
        };

        ColorElement    **mStripColors;
        int                                             mStripColorsCount;
        
        //      Idetifier of Visualization List.
        GLuint  mIdVisualList;

        //      List of texture files of the mesh.
        vector<string>  mMeshTexFiles;
};

#endif