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#ifndef MBGL_GEOMETRY_LINE_BUFFER
#define MBGL_GEOMETRY_LINE_BUFFER
#include <mbgl/geometry/buffer.hpp>
namespace mbgl {
class LineVertexBuffer : public Buffer<
8 // 2 coordinates per vertex + 1 linesofar + 1 extrude coord pair == 4 (== 8 bytes)
> {
public:
typedef int16_t vertex_type;
/*
* Scale the extrusion vector so that the normal length is this value.
* Contains the "texture" normals (-1..1). This is distinct from the extrude
* normals for line joins, because the x-value remains 0 for the texture
* normal array, while the extrude normal actually moves the vertex to create
* the acute/bevelled line join.
*/
static const int8_t extrudeScale = 63;
/*
* Add a vertex to this buffer
*
* @param {number} x vertex position
* @param {number} y vertex position
* @param {number} ex extrude normal
* @param {number} ey extrude normal
* @param {number} tx texture normal
* @param {number} ty texture normal
* @param {number} dir direction of the line cap (-1/0/1)
*/
GLsizei add(vertex_type x, vertex_type y, float ex, float ey, bool tx, bool ty, int8_t dir, int32_t linesofar = 0);
};
} // namespace mbgl
#endif
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