38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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#ifndef GMIO_LIBSTL_TRIANGLE_H
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#define GMIO_LIBSTL_TRIANGLE_H
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#include "stl_global.h"
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/*! Cartesian coordinate entity in 3D space, specifically tailored for STL needs (single-float) */
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struct gmio_stl_coords
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{
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gmio_real32_t x;
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gmio_real32_t y;
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gmio_real32_t z;
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};
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typedef struct gmio_stl_coords gmio_stl_coords_t;
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/*! STL mesh triangle defined three geometric vertices and an orientation(normal) */
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struct gmio_stl_triangle
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{
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gmio_stl_coords_t normal;
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gmio_stl_coords_t v1;
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gmio_stl_coords_t v2;
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gmio_stl_coords_t v3;
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uint16_t attribute_byte_count; /*!< Useful only for STL binary format */
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};
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typedef struct gmio_stl_triangle gmio_stl_triangle_t;
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/*! Compact size of a gmio_stl_coords_t object */
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#define GMIO_STL_COORDS_RAWSIZE (3 * sizeof(gmio_real32_t))
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/*! Compact size of a gmio_stl_triangle_t object for STL ascii format */
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#define GMIO_STLA_TRIANGLE_RAWSIZE (4 * GMIO_STL_COORDS_RAWSIZE)
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/*! Compact size of a gmio_stl_triangle_t object for STL binary format */
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#define GMIO_STLB_TRIANGLE_RAWSIZE (GMIO_STLA_TRIANGLE_RAWSIZE + sizeof(uint16_t))
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#endif /* GMIO_LIBSTL_TRIANGLE_H */
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