45 lines
915 B
C
45 lines
915 B
C
/*
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* stl.h
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* Author: Josh Holtrop
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* Date: 2007-06-02
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* From information at http://en.wikipedia.org/wiki/STL_(file_format)
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* macros */
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#define STL_HEADER_LENGTH 80
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#define stl_num_faces(stlp) ((stlp)->n_faces)
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#define stl_face(stlp,facenum) ((stlp)->faces[(facenum)])
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#define stl_attr_color_valid(attr) ((attr) & 0x8000)
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#define stl_attr_color_r(attr) (((attr) & 0x7C00) >> 7)
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#define stl_attr_color_g(attr) (((attr) & 0x03E0) >> 2)
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#define stl_attr_color_b(attr) (((attr) & 0x001F) << 3)
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/* types */
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typedef struct stl_face_s
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{
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float normal[3];
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float vertices[3][3];
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unsigned short attribute;
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} __attribute__ ((packed)) stl_face_t;
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typedef struct stl_s
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{
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char header[STL_HEADER_LENGTH];
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unsigned int n_faces;
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stl_face_t faces[1];
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} __attribute__ ((packed)) stl_t;
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/* functions */
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stl_t * stl_load(const char * filename);
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#ifdef __cplusplus
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}
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#endif
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