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#ifndef lint |
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static const char RCSid[] = "$Id: writeoct.c,v 2.6 2004/04/29 14:36:49 greg Exp $"; |
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#endif |
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/* |
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* writeoct.c - routines for writing octree information to stdout. |
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* |
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* 7/30/85 |
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*/ |
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|
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#include "standard.h" |
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|
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#include "octree.h" |
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#include "object.h" |
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#include "oconv.h" |
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|
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#ifdef putc_unlocked /* avoid horrendous overhead of flockfile */ |
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#undef putc |
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#define putc putc_unlocked |
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#endif |
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|
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static void oputstr(char *s); |
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static void putfullnode(OCTREE fn); |
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static void oputint(long i, int siz); |
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static void oputflt(double f); |
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static void puttree(OCTREE ot); |
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|
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|
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void |
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writeoct( /* write octree structures to stdout */ |
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int store, |
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CUBE *scene, |
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char *ofn[] |
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) |
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{ |
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char sbuf[64]; |
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int i; |
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/* write format number */ |
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oputint((long)(OCTMAGIC+sizeof(OBJECT)), 2); |
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|
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if (!(store & IO_BOUNDS)) |
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return; |
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/* write boundaries */ |
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for (i = 0; i < 3; i++) { |
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sprintf(sbuf, "%.12g", scene->cuorg[i]); |
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oputstr(sbuf); |
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} |
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sprintf(sbuf, "%.12g", scene->cusize); |
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oputstr(sbuf); |
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/* write object file names */ |
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if (store & IO_FILES) |
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for (i = 0; ofn[i] != NULL; i++) |
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oputstr(ofn[i]); |
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oputstr(""); |
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/* write number of objects */ |
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oputint((long)nobjects, sizeof(OBJECT)); |
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|
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if (!(store & IO_TREE)) |
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return; |
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/* write the octree */ |
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puttree(scene->cutree); |
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|
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if (store & IO_FILES || !(store & IO_SCENE)) |
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return; |
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/* write the scene */ |
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writescene(0, nobjects, stdout); |
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} |
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|
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|
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static void |
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oputstr( /* write null-terminated string to stdout */ |
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register char *s |
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) |
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{ |
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putstr(s, stdout); |
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if (ferror(stdout)) |
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error(SYSTEM, "write error in putstr"); |
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} |
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|
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|
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static void |
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putfullnode( /* write out a full node */ |
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OCTREE fn |
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) |
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{ |
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OBJECT oset[MAXSET+1]; |
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register int i; |
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|
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objset(oset, fn); |
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for (i = 0; i <= oset[0]; i++) |
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oputint((long)oset[i], sizeof(OBJECT)); |
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} |
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|
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|
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static void |
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oputint( /* write a siz-byte integer to stdout */ |
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register long i, |
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register int siz |
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) |
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{ |
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putint(i, siz, stdout); |
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if (ferror(stdout)) |
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error(SYSTEM, "write error in putint"); |
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} |
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|
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|
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static void |
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oputflt( /* put out floating point number */ |
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double f |
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) |
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{ |
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putflt(f, stdout); |
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if (ferror(stdout)) |
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error(SYSTEM, "write error in putflt"); |
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} |
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|
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|
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static void |
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puttree( /* write octree to stdout in pre-order form */ |
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register OCTREE ot |
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) |
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{ |
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register int i; |
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|
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if (istree(ot)) { |
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putc(OT_TREE, stdout); /* indicate tree */ |
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for (i = 0; i < 8; i++) /* write tree */ |
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puttree(octkid(ot, i)); |
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} else if (isfull(ot)) { |
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putc(OT_FULL, stdout); /* indicate fullnode */ |
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putfullnode(ot); /* write fullnode */ |
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} else |
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putc(OT_EMPTY, stdout); /* indicate empty */ |
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} |
