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#include "copyright.h" |
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#include "standard.h" |
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#include "object.h" |
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#include "octree.h" |
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#include "otypes.h" |
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#include "face.h" |
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#include "cone.h" |
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#include "instance.h" |
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#include "mesh.h" |
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+ |
#include "oconv.h" |
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< |
add2bbox(o, bbmin, bbmax) /* expand bounding box to fit object */ |
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< |
register OBJREC *o; |
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< |
FVECT bbmin, bbmax; |
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> |
static void point2bbox(FVECT p, FVECT bbmin, FVECT bbmax); |
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> |
static void circle2bbox(FVECT cent, FVECT norm, double rad, FVECT bbmin, FVECT bbmax); |
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> |
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> |
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> |
void |
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> |
add2bbox( /* expand bounding box to fit object */ |
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> |
register OBJREC *o, |
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> |
FVECT bbmin, |
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> |
FVECT bbmax |
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> |
) |
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{ |
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CONE *co; |
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FACE *fo; |
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case OBJ_TUBE: |
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case OBJ_RING: |
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co = getcone(o, 0); |
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if (co == NULL) |
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break; |
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if (o->otype != OBJ_RING) |
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circle2bbox(CO_P0(co), co->ad, CO_R0(co), bbmin, bbmax); |
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circle2bbox(CO_P1(co), co->ad, CO_R1(co), bbmin, bbmax); |
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} |
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< |
point2bbox(p, bbmin, bbmax) /* expand bounding box to fit point */ |
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< |
register FVECT p, bbmin, bbmax; |
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> |
static void |
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> |
point2bbox( /* expand bounding box to fit point */ |
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> |
register FVECT p, |
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> |
register FVECT bbmin, |
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> |
register FVECT bbmax |
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> |
) |
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{ |
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register int i; |
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} |
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< |
circle2bbox(cent, norm, rad, bbmin, bbmax) /* expand bbox to fit circle */ |
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< |
FVECT cent, norm; |
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< |
double rad; |
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< |
FVECT bbmin, bbmax; |
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> |
static void |
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> |
circle2bbox( /* expand bbox to fit circle */ |
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> |
FVECT cent, |
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> |
FVECT norm, |
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> |
double rad, |
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> |
FVECT bbmin, |
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> |
FVECT bbmax |
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> |
) |
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{ |
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< |
FVECT v1, v2; |
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< |
register int i, j; |
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> |
double d, r; |
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> |
register int i; |
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for (i = 0; i < 3; i++) { |
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< |
v1[0] = v1[1] = v1[2] = 0; |
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< |
v1[i] = 1.0; |
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< |
fcross(v2, norm, v1); |
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< |
if (normalize(v2) == 0.0) |
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< |
continue; |
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< |
for (j = 0; j < 3; j++) |
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< |
v1[j] = cent[j] + rad*v2[j]; |
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< |
point2bbox(v1, bbmin, bbmax); |
| 126 |
< |
for (j = 0; j < 3; j++) |
| 127 |
< |
v1[j] = cent[j] - rad*v2[j]; |
| 128 |
< |
point2bbox(v1, bbmin, bbmax); |
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> |
r = sqrt(1. - norm[i]*norm[i]); |
| 130 |
> |
d = cent[i] + r*rad; |
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> |
if (d > bbmax[i]) |
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> |
bbmax[i] = d; |
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> |
d = cent[i] - r*rad; |
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> |
if (d < bbmin[i]) |
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> |
bbmin[i] = d; |
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} |
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} |
