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/*
* extrude.h
*
* FUNCTION:
* prototypes for privately used subroutines for the tubing library
*
* HISTORY:
* Linas Vepstas 1991
*/
#include "port.h" /* for gleDouble */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
/* ============================================================ */
/*
* Provides choice of calling subroutine, vs. invoking macro.
* Basically, inlines the source, or not.
* Trades performance for executable size.
*/
#define INLINE_INTERSECT
#ifdef INLINE_INTERSECT
#define INNERSECT(sect,p,n,v1,v2) { INTERSECT(sect,p,n,v1,v2); }
#else
#define INNERSECT(sect,p,n,v1,v2) intersect(sect,p,n,v1,v2)
#endif /* INLINE_INTERSECT */
/* ============================================================ */
/* The folowing defines give a kludgy way of accessing the qmesh primitive */
/*
#define bgntmesh _emu_qmesh_bgnqmesh
#define endtmesh _emu_qmesh_endqmesh
#define c3f _emu_qmesh_c3f
#define n3f _emu_qmesh_n3f
#define v3f _emu_qmesh_v3f
*/
/* ============================================================ */
extern void up_sanity_check (gleDouble up[3], /* up vector for contour */
int npoints, /* numpoints in poly-line */
gleDouble point_array[][3]); /* polyline */
extern void draw_raw_style_end_cap (int ncp, /* number of contour points */
gleDouble contour[][2], /* 2D contour */
gleDouble zval, /* where to draw cap */
int frontwards); /* front or back cap */
extern void draw_round_style_cap_callback (int iloop,
double cap[][3],
float face_color[3],
gleDouble cut_vector[3],
gleDouble bisect_vector[3],
double norms[][3],
int frontwards);
extern void draw_angle_style_front_cap (int ncp,
gleDouble bi[3],
gleDouble point_array[][3]);
extern void extrusion_raw_join (int ncp, /* number of contour points */
gleDouble contour[][2], /* 2D contour */
gleDouble cont_normal[][2],/* 2D contour normal vecs */
gleDouble up[3], /* up vector for contour */
int npoints, /* numpoints in poly-line */
gleDouble point_array[][3], /* polyline */
float color_array[][3], /* color of polyline */
gleDouble xform_array[][2][3]); /* 2D contour xforms */
extern void extrusion_round_or_cut_join (int ncp, /* number of contour points */
gleDouble contour[][2], /* 2D contour */
gleDouble cont_normal[][2],/* 2D contour normal vecs */
gleDouble up[3], /* up vector for contour */
int npoints, /* numpoints in poly-line */
gleDouble point_array[][3], /* polyline */
float color_array[][3], /* color of polyline */
gleDouble xform_array[][2][3]); /* 2D contour xforms */
extern void extrusion_angle_join (int ncp, /* number of contour points */
gleDouble contour[][2], /* 2D contour */
gleDouble cont_normal[][2],/* 2D contour normal vecs */
gleDouble up[3], /* up vector for contour */
int npoints, /* numpoints in poly-line */
gleDouble point_array[][3], /* polyline */
float color_array[][3], /* color of polyline */
gleDouble xform_array[][2][3]); /* 2D contour xforms */
/* -------------------------- end of file -------------------------------- */
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