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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/color.h"
#include "math/vector3f.h"
namespace model {
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, math::Color const &color, float tex_x=0.0f, float tex_y=0.0f);
inline float *vertex() { return vertex_vertex; }
inline float *color() { return vertex_color; }
inline float *normal() { return vertex_normal; }
inline float *texture() { return vertex_texture; }
inline bool overflow() const { return vertex_overflow; }
/// number of allocated floats
inline size_t size() const { return vertex_size; }
/// index to the top of the stack
inline size_t index() const { return vertex_index; }
static inline VertexArray *instance() { return vertex_instance; }
private:
/// model vertices
float *vertex_vertex;
float *vertex_color;
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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