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/*
model/vertexarray.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_MODEL_VERTEXARRAY_H__
#define __INCLUDED_MODEL_VERTEXARRAY_H__
#include "math/vector3f.h"
namespace model
{
// number of segments in a sphere circle, must be uneven
const int SPHERESEGMENTS = 65;
/// global vertex array
/** a VertexArray acts like a stack of model vertices, it has no knowledge of what it is holding
*/
class VertexArray
{
public:
/// create a new VertexArray with size in Mb
VertexArray(size_t size);
~VertexArray();
void clear();
size_t add_vertex(math::Vector3f const &v, math::Vector3f const &n, float tex_x=0.0f, float tex_y=0.0f);
inline float *vertex()
{
return vertex_vertex;
}
inline float *normal()
{
return vertex_normal;
}
inline float *texture()
{
return vertex_texture;
}
inline bool overflow() const
{
return vertex_overflow;
}
/// size of the vertex array in number of floats (for a single array)
inline size_t size() const
{
return vertex_size;
}
/// number of allocated floats
inline size_t index() const
{
return vertex_index;
}
static inline VertexArray *instance()
{
return vertex_instance;
}
private:
/// model vertices
float *vertex_vertex;
float *vertex_normal;
float *vertex_texture;
size_t vertex_index;
size_t vertex_size;
void add_sphere();
static VertexArray *vertex_instance;
bool vertex_overflow;
};
}
#endif // __INCLUDED_MODEL_VERTEXARRAY_H__
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