/home/carolina/workspace/spvolren_cpu/basic_defs.h

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#ifndef BASIC_DEFS_H
#define BASIC_DEFS_h

#define GLX_GLXEXT_PROTOTYPES
#define GLH_EXT_SINGLE_FILE
#define _GNU_SOURCE

#define USING_GLSL 1

#ifdef USING_GLSL
#include <GL/glew.h>
#else
#include <glh/glh_extensions.h>
#endif

#include <GL/glut.h>
#include <stdlib.h>
#include <float.h>
#include <math.h>
#include <limits.h>

#include "mmath.h"

#if defined WIN32
        #include <io.h>
#else
        #include <unistd.h>
        #include <sys/stat.h>
        #include <sys/types.h>
        #include <dirent.h>
#endif

#include "sysconf.h"
#include "transferEdit.h"
#include "arbprogram.h"
#include "reader.h"
#include "preint.h"
#include "timer.h"
#include "tools.h"
#include "ppm.h"

#include "carol_glsl.h"

typedef enum {
        MOUSE_ROTATE,
        MOUSE_TRANSLATE,
        MOUSE_DOLLY,
        MOUSE_MOVE_LIGHT_XY,
        MOUSE_MOVE_LIGHT_Z
} MouseMode;

typedef struct {
        float stepSize;
        float sliceThickness;
        float gradScale;
        float gradOffset;
        float texCoordScale;
        float isoValue;
        float clipIsoValue;
        int numIterations;
        int wireframe;
        int drawLight;
        float dummy; /* for file compatibility */
        float scatteringScale;
        GLfloat lightPos[4];
        GLfloat translate[3];
        float camZ;
        Quaternion camRot;
        int backgroundImage;
        unsigned char backgroundGrayVal;
} UserSettings;

static struct {
        int numSlices[3];
        float sliceDists[3];
        int volTexSizes[3];
        void *volData;

        float scaleFactors[4];
        float scaleFactorsInv[4];
        float extents[3];
        float center[4];

        char *basename;

        DataTypeTE **dataTE;
        GLuint teTex;

        unsigned char *preIntTable;
        unsigned char *tfFunc;

        unsigned char *optDensity;

        GLuint framebuffer;
        GLuint depthbuffer;
        Texture *colorImageTex;
    Texture *hitPointsImageTex;
        Texture *startPosImageTex;
        Texture *debugImageTex;

        ARBProgram copyBufferProg;
        ARBProgram renderHitPointsVProg;
        ARBProgram fillStartPosHolesProg;
        ARBProgram initHitPointsProg;
        ARBProgram initHitPointsBackProg;

        float isoValueStep;
        int animated;
        int animatedFrames;
        float minFps, fpsSum, maxFps;
        float animatedAngle;

        int numFragProgs;
        ARBProgram *fragProgs;
        ARBProgram *currentFragProg;

        int mousePosLast[2];
        MouseMode mouseMode;
        int windowWidth, windowHeight;

        Texture *textures;
        int numTextures;

        int initialized;

        UserSettings u;
} g;

void drawQuads(void);

#endif

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