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#ifndef MBGL_GEOMETRY_TRIANGLE_ELEMENTS_BUFFER
#define MBGL_GEOMETRY_TRIANGLE_ELEMENTS_BUFFER
#include <mbgl/geometry/buffer.hpp>
#include <mbgl/geometry/vao.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <array>
namespace mbgl {
template <int count>
struct ElementGroup : public util::noncopyable {
std::array<VertexArrayObject, count> array;
uint32_t vertex_length;
uint32_t elements_length;
ElementGroup() : vertex_length(0), elements_length(0) {}
ElementGroup(uint32_t vertex_length_, uint32_t elements_length_)
: vertex_length(vertex_length_),
elements_length(elements_length_) {
}
ElementGroup(ElementGroup &&rhs) noexcept
: array(std::move(rhs.array)),
vertex_length(rhs.vertex_length),
elements_length(rhs.elements_length) {};
};
class TriangleElementsBuffer : public Buffer<
6, // bytes per triangle (3 * unsigned short == 6 bytes)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a, element_type b, element_type c);
};
class LineElementsBuffer : public Buffer<
4, // bytes per triangle (2 * unsigned short == 6 bytes)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a, element_type b);
};
class PointElementsBuffer : public Buffer<
2, // bytes per point (1 unsigned short)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a);
};
}
#endif
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