CloudGenerator.h

#pragma once
#include "Scene.h"
#include "Export.h"
#include "ImportClouds.h"
#include "WangCloud.h"
#include <osg/Vec2>

#define PI 3.14159265
inline float frand()
{
    return rand() / (float) RAND_MAX;
}

namespace osgCloudyDay
{
        class CloudGenerator
        {
        public:
                CloudGenerator(osg::Vec4 density);
                virtual ~CloudGenerator(void)=0;

                WangCloud* Create();

                WangCloud* Create(osg::Vec3 middlepoint);

                virtual void Initialize() = 0;
        
                void DecideInsideOutside();

                void AddCloudBox(int box_iter, osg::Vec3 origin, osg::Vec3 sizes, osg::Vec3 cloud_size, osg::Vec3 jitter_sizes, bool buttom, float s, osg::Vec4 min_max_scale, osg::Vec4 density = osg::Vec4(1.0f,1.0f,1.0f,1.0f));

                void AddCloudBox(CloudCreateVolume* volume, int box_iter,  osg::Vec3 origin, osg::Vec3 sizes, osg::Vec3 cloud_size, osg::Vec3 jitter_sizes, bool buttom, osg::Vec4 density = osg::Vec4(1.0f,1.0f,1.0f,1.0f));
        
                void EliminateRedudantSprites();
        
                void AddBox(osg::ref_ptr<osg::Vec3Array> box_triangles, osg::Vec3 posHelper, osg::Vec3 size);

                static void DoExport();

                static Export* ex;
                static int numClouds;
                WangCloud* m_cloud;     

                osg::ref_ptr<osg::Geode> dBoxes;
        protected:      
                static float* m_frands;
                static void GenerateRandomNumber();
                static float GetRandomFloat();
                static int m_iterFloatRand;

                osg::ref_ptr<osg::Vec3Array> dBoxes_vertices;
                std::vector<unsigned short> dBoxes_indices;
                osg::ref_ptr<osg::Geometry> dBoxes_geometry;
        
                int m_category;

                osg::Vec3 m_middlepoint;
                osg::Vec4 m_density;
        };
}