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git://projects.qi-hardware.com/cae-tools.git
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6acca4ea4a
- solidify/face.h (z0_scale, fx_to_angle, fy_to_angle, fx_from_angle, fy_from_angle): correct for z vs. xy scale differences - solidify/overlap.c (merge_matrix): correct z0 shrinkage for z vs. xy scale differences
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
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* face.h - Data structure and handling of one face of a part
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*
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* Written 2010 by Werner Almesberger
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* Copyright 2010 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef FACE_H
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#define FACE_H
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#include <math.h>
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#include "array.h"
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#include "matrix.h"
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struct face {
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struct array *a;
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double x_step, y_step, z_step;
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int sx, sy, sz; /* size */
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int cx, cy; /* center */
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int z_ref;
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double fx, fy; /* inclination factor */
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struct matrix m;
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};
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static inline double face_z0(const struct face *f, int x, int y)
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{
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return f->z_ref+f->fx*(x-f->sx/2)+f->fy*(y-f->sy/2);
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}
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static inline double z0_scale(const struct face *f)
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{
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return f->z_step/f->x_step;
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}
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static inline double fx_to_angle(const struct face *f)
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{
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return atan(f->fx*z0_scale(f))/M_PI*180;
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}
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static inline double fy_to_angle(const struct face *f)
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{
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return atan(f->fy*z0_scale(f))/M_PI*180;
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}
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static inline void fx_from_angle(struct face *f, double a)
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{
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f->fx = tan(a/180*M_PI)/z0_scale(f);
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}
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static inline void fy_from_angle(struct face *f, double a)
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{
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f->fy = tan(a/180*M_PI)/z0_scale(f);
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}
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struct face *read_face(const char *name);
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#endif /* !FACE_H */
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