CloudsManager.h

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#ifndef _VRECKO_CLOUDS_CLOUDSMANAGER_H
#define _VRECKO_CLOUDS_CLOUDSMANAGER_H

#include "cloud.h"
#include "Cloud2DPlacement.h"

extern bool g_Anisotropic_scattering;
extern bool g_MultipleForwardScattering;

struct CloudsProperties
{
    // Contains the sun properties
    SunLight sun;
    bool sunShow;

    // Number of clouds in the scene
    unsigned int numOfClouds;

    // Scale of the clouds
    float scale;

    // CloudGrowth - half-axis of the ellipsoid from which the cloud is generated (all three coordinates)
    // CloudGrowthRand - pseudo random numbers from the interval <0, CloudGrowthRand - 1> are added to the CloudGrowth
    //                   to increase the randomness
    // GrowthSimulationSteps - number of simulation steps
    // GrowthSimulationStepsRand - pseudo random number from the interval <0, GrowthSimulationStepsRand - 1> is added
    //                             to the GrowthSimulationSteps to increase the randomness
    unsigned int CloudGrowth[3], CloudGrowthRand[3],
                 GrowthSimulationSteps, GrowthSimulationStepsRand;


    // Position of the block in which the clouds are located
    int CloudFlatAreaPosition[3];
    // Dimensions of the block in which the clouds are located
    unsigned int CloudFlatAreaSize[3];

    // Path to the cloud texture
    std::string renderCloudTexturePath;

    // maxCloudUpdatesParFrame - maximum number of clouds updated in one frame
    // translateErrorTolerance - error tolerance
    unsigned int maxCloudUpdatesParFrame;
    float translateErrorTolerance;

    // loadFromFile - Indicates if the scene is loaded from files and not generated from parameters
    // saveToFile - Indicates if the scene is saved to files afterwards
    bool loadFromFile, saveToFile;

    // Skybox properties
    bool skyboxShow;                    // Indicates if the skybox should be used
    long skyboxSize;                    // Length of the skybox cube edge
    long skyboxCenterPosition[3];
    std::string skyBoxTexturePathTop;
    std::string skyBoxTexturePathNorth;
    std::string skyBoxTexturePathSouth;
    std::string skyBoxTexturePathWest;
    std::string skyBoxTexturePathEast;

    // Ground properties
    bool groundShow;
    long groundCenterPosition[3];
    std::string groundTexturePath;
};

class CloudsManager
{
public:
    std::vector<Cloud> clouds;

    CloudsProperties properties;
    CloudSceneInfo sceneInfo;
    PseudoRand2DPlacement flatLayer;
public:
    CloudsManager() {}
    ~CloudsManager() { this->Delete(); }

    void LoadAndInitiate(void);

    void SetUVCoords(bool singleTexture = false);

    void Update(const osg::Vec3f& cameraPosition, const osg::Vec3f& cameraView, const osg::Vec3f& cameraUp);

    int SaveToFile(void);

    int LoadFromFile(void);

    void Delete(void);
};

extern CloudsManager g_Clouds;

#endif