cloud.hpp

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#pragma once
#ifndef OGLPLUS_IMAGES_CLOUD_1107121519_HPP
#define OGLPLUS_IMAGES_CLOUD_1107121519_HPP

#include <oglplus/images/image.hpp>
#include <oglplus/math/vector.hpp>

namespace oglplus {
namespace images {


class Cloud
 : public Image
{
private:
    GLfloat _sub_scale;
    GLfloat _sub_variance;
    GLfloat _min_radius;

    void _adjust_sphere(Vec3f& center, GLfloat& radius) const;
    bool _apply_sphere(const Vec3f& center, GLfloat radius);

    static GLfloat _rand_u(void);
    static GLfloat _rand_s(void);

    void _make_spheres(Vec3f center, GLfloat radius);
public:
    Cloud(
        GLsizei width,
        GLsizei height,
        GLsizei depth,
        const Vec3f& origin = Vec3f(0.0f, -0.3f, 0.0f),
        GLfloat init_radius = 0.7f,
        GLfloat sub_scale = 0.333f,
        GLfloat sub_variance = 0.5f,
        GLfloat min_radius = 0.04f
    );
};

class Cloud2D
 : public Image
{
public:
    Cloud2D(const Cloud& cloud);
};

} // images
} // oglplus

#if !OGLPLUS_LINK_LIBRARY || defined(OGLPLUS_IMPLEMENTING_LIBRARY)
#include <oglplus/images/cloud.ipp>
#endif

#endif // include guard