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In POV-Ray output, move faces to more correct Z locations.

Browse Source 
- solidify/povray.c: update title for renaming
- solidify/povray.c (povray_face, povray): flip the bottom face
- solidify/povray.c (povray_face, povray): instead of centering the face on
  Z, shift it to its z0 position
- solidify/povray.c (povray_face, povray): split the distance between faces
  equally among them
This commit is contained in:
Werner Almesberger 2010-09-25 04:40:08 -03:00
parent f37441a7c2
commit f0a8bcd95e
1 changed files with 11 additions and 5 deletions
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16
solidify/povray.c
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@ -1,5 +1,5 @@
/*
* solid.c - Data structure and handling of a solid made of two opposing faces
* povray.c - Generate POV-Ray output
*
* Written 2010 by Werner Almesberger
* Copyright 2010 by Werner Almesberger
@ -70,7 +70,7 @@ static void sanitize(const char *s, char *res)
*/
static void povray_face(const struct face *f, const char *side,
const char *prefix)
const char *prefix, int flip, double dist)
{
int sz = f->a->max_z-f->a->min_z;
@ -86,9 +86,15 @@ static void povray_face(const struct face *f, const char *side,
"\t scale <%g, %g, %g>\n"
"\t rotate <90, 0, 0>\n"
"\t translate <%g, %g, %g>\n"
"\t translate <0, 0, %g>\n"
"%s" /* flip bottom face */
"\t translate <0, 0, %g>\n"
"\t}\n", prefix, side,
f->sx*f->x_step, sz*f->z_step, f->sy*f->y_step,
-f->sx*f->x_step/2, f->sy*f->y_step/2, -sz*f->z_step/2);
-f->sx*f->x_step/2, f->sy*f->y_step/2, f->a->min_z*f->z_step,
-f->z_ref*f->z_step,
flip ? "\t rotate <180, 0, 0>\n" : "",
dist*f->z_step);
}
@ -108,7 +114,7 @@ void povray(const char *name, const struct solid *s)
sanitize(name, tmp);
printf("#declare Part_%s =\n intersection {\n", tmp);
povray_face(s->a, "top", name);
povray_face(s->b, "bot", name);
povray_face(s->a, "top", name, 0, s->dist/2);
povray_face(s->b, "bot", name, 1, -s->dist/2);
printf(" }\n");
}