From 1575bd1eac75e0967c8a6b2373bad975a8d1e1c6 Mon Sep 17 00:00:00 2001
From: taw27 <taw27@84d2e878-0bd5-11dd-ad15-13eda11d74c5>
Date: Sun, 27 Jul 2008 22:06:11 +0000
Subject: Modelling stuff

git-svn-id: svn://cook.msm.cam.ac.uk:745/thrust3d/thrust3d@183 84d2e878-0bd5-11dd-ad15-13eda11d74c5
---
 data/Makefile.am    |   2 +-
 data/models/pipe    |  88 +++++++++++++++++++++++++++++++
 data/rooms/00-02-04 |   1 +
 src/obj2model.c     | 145 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 235 insertions(+), 1 deletion(-)
 create mode 100644 data/models/pipe

diff --git a/data/Makefile.am b/data/Makefile.am
index 9ea8369..4f5f4f7 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -1,6 +1,6 @@
 modelsdir = $(datadir)/thrust3d/models
 models_DATA = models/floor models/lander models/randombox models/walle models/walln models/wallw models/walls \
-		models/platform models/ceiling models/tiledfloor
+		models/platform models/ceiling models/tiledfloor models/pipe
 
 shadersdir = $(datadir)/thrust3d/shaders
 shaders_DATA = shaders/lighting.vert shaders/lighting.frag shaders/swirlytron.vert shaders/swirlytron.frag
diff --git a/data/models/pipe b/data/models/pipe
new file mode 100644
index 0000000..d3a6b69
--- /dev/null
+++ b/data/models/pipe
@@ -0,0 +1,88 @@
+# pipe.obj
+
+QUADS
+  +0.100   -0.000   +0.000
+  +0.092   +0.038   +0.000
+  +0.092   +0.038   +0.601
+  +0.100   -0.000   +0.601
+#
+  +0.100   -0.000   +0.000
+  +0.092   -0.038   +0.000
+  +0.092   -0.038   +0.601
+  +0.100   -0.000   +0.601
+#
+  +0.071   -0.071   +0.000
+  +0.092   -0.038   +0.000
+  +0.092   -0.038   +0.601
+  +0.071   -0.071   +0.601
+#
+  +0.038   -0.092   +0.000
+  +0.071   -0.071   +0.000
+  +0.071   -0.071   +0.601
+  +0.038   -0.092   +0.601
+#
+  +0.000   -0.100   +0.000
+  +0.038   -0.092   +0.000
+  +0.038   -0.092   +0.601
+  +0.000   -0.100   +0.601
+#
+  +0.000   -0.100   +0.000
+  -0.038   -0.092   +0.000
+  -0.038   -0.092   +0.601
+  +0.000   -0.100   +0.601
+#
+  -0.071   -0.071   +0.000
+  -0.038   -0.092   +0.000
+  -0.038   -0.092   +0.601
+  -0.071   -0.071   +0.601
+#
+  -0.092   -0.038   +0.000
+  -0.071   -0.071   +0.000
+  -0.071   -0.071   +0.601
+  -0.092   -0.038   +0.601
+#
+  -0.100   +0.000   +0.000
+  -0.092   -0.038   +0.000
+  -0.092   -0.038   +0.601
+  -0.100   +0.000   +0.601
+#
+  -0.100   +0.000   +0.000
+  -0.092   +0.038   +0.000
+  -0.092   +0.038   +0.601
+  -0.100   +0.000   +0.601
+#
+  -0.071   +0.071   +0.000
+  -0.092   +0.038   +0.000
+  -0.092   +0.038   +0.601
+  -0.071   +0.071   +0.601
+#
+  -0.071   +0.071   +0.000
+  -0.038   +0.092   +0.000
+  -0.038   +0.092   +0.601
+  -0.071   +0.071   +0.601
+#
+  +0.000   +0.100   +0.000
+  -0.038   +0.092   +0.000
+  -0.038   +0.092   +0.601
+  +0.000   +0.100   +0.601
+#
+  +0.038   +0.092   +0.000
+  +0.000   +0.100   +0.000
+  +0.000   +0.100   +0.601
+  +0.038   +0.092   +0.601
+#
+  +0.071   +0.071   +0.601
+  +0.038   +0.092   +0.000
+  +0.038   +0.092   +0.601
+  +0.000   +0.000   +0.000
+#
+  +0.071   +0.071   +0.601
+  +0.092   +0.038   +0.000
+  +0.092   +0.038   +0.601
+  +0.000   +0.000   +0.000
+#
+  +0.071   +0.071   +0.601
+  +0.092   +0.038   +0.000
+  +0.092   +0.038   +0.601
+  +0.000   +0.000   +0.000
+
diff --git a/data/rooms/00-02-04 b/data/rooms/00-02-04
index 23f74dd..3db5768 100644
--- a/data/rooms/00-02-04
+++ b/data/rooms/00-02-04
@@ -9,6 +9,7 @@ wallw     -5.0   0.0    0.0
 walle      5.0   0.0    0.0
 ceiling    0.0   0.0    5.0
 tiledfloor 0.0   0.0   -5.0
+pipe       1.0  1.0    -4.0
 
 comment Ventilation shaft
 
diff --git a/src/obj2model.c b/src/obj2model.c
index a3ac831..1e160ff 100644
--- a/src/obj2model.c
+++ b/src/obj2model.c
@@ -14,9 +14,154 @@
 #endif
 
 #include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "utils.c"
+
+#define MAX_VERTICES 65536
 
 int main(int argc, char *argv[]) {
 
+	FILE *fh;
+	FILE *out;
+	float vtmp[3*MAX_VERTICES];
+	float vntmp[3*MAX_VERTICES];
+	int n_vtmp, n_vntmp;
+	int nprev;
+	
+	fh = fopen(argv[1], "r");
+	if ( fh == NULL ) {
+		fprintf(stderr, "Couldn't open '%s'\n", argv[1]);
+		return 1;
+	}
+	
+	/* Zip through and find all the vertices */
+	n_vtmp = 0;
+	n_vntmp = 0;
+	while ( !feof(fh) ) {
+		
+		char line[1024];
+		float x, y, z;
+		size_t s;
+		
+		fgets(line, 1023, fh);
+		s = 0;
+		for ( ; s<strlen(line); s++ ) {
+			if ( line[s] != ' ' ) break;
+		}
+			
+		if ( line[s] == '#' ) {
+			continue;
+		}
+		
+		if ( sscanf(line+s, "v %f %f %f\n", &x, &y, &z) == 3 ) {
+			vtmp[3*n_vtmp+0] = x;
+			vtmp[3*n_vtmp+1] = y;
+			vtmp[3*n_vtmp+2] = z;
+			n_vtmp++;
+			continue;
+		}
+		
+		if ( sscanf(line+s, "vn %f %f %f\n", &x, &y, &z) == 3 ) {
+			vntmp[3*n_vntmp+0] = x;
+			vntmp[3*n_vntmp+1] = y;
+			vntmp[3*n_vntmp+2] = z;
+			n_vntmp++;
+			continue;
+		}
+	
+	}
+	
+	/* Go through again and look for faces */
+	rewind(fh);
+	out = fopen(argv[2], "w");
+	fprintf(out, "# %s\n", argv[1]);
+	fprintf(out, "\n");
+	nprev = 0;
+	while ( !feof(fh) ) {
+	
+		char line[1024];
+		char **bits;
+		int n, i;
+		
+		fgets(line, 1023, fh);
+		n = assplode(line, " \t\r\n", &bits, ASSPLODE_NONE);
+		
+		/* Read in a face */
+		if ( strcmp(bits[0], "f") == 0 ) {
+		
+			int nthis;
+			
+			nthis = n-1;
+			if ( nthis != nprev ) {
+				if ( nprev != 0 ) fprintf(out, "\n");
+				if ( nthis == 4 ) {
+					fprintf(out, "QUADS\n");
+				} else {
+					fprintf(out, "POLYGONS\n");
+				}
+				nprev = nthis;
+			} else {
+				fprintf(out, "#\n");
+			}
+			
+			for ( i=1; i<n; i++ ) {
+			
+				char **sp;
+				int np, nnum, j, nslash;
+				
+				nslash = 0;
+				for ( j=0; j<strlen(bits[i]); j++ ) {
+					if ( bits[i][j] == '/' ) nslash++;
+				}
+				if ( nslash == 2 ) {
+				
+					int vnum;
+				
+					np = assplode(bits[i], "/", &sp, ASSPLODE_DUPS);
+					if ( np != 3 ) {
+						continue;
+					}
+					vnum = atoi(sp[0])-1;
+					nnum = atoi(sp[2])-1;
+					if ( vnum >= n_vtmp ) {
+						fprintf(stderr, "Vertex index is too high (%i/%i)\n", vnum, n_vtmp);
+						continue;
+					}
+					if ( nnum >= n_vntmp ) {
+						fprintf(stderr, "Normal index is too high (%i/%i)\n", nnum, n_vntmp);
+						continue;
+					}
+					fprintf(out, "%+8.3f %+8.3f %+8.3f\n", vtmp[3*vnum+0], vtmp[3*vnum+1],
+										vtmp[3*vnum+2]);
+					free(sp[0]);
+					free(sp[1]);
+					free(sp[2]);
+					free(sp);
+				
+				} else if ( nslash == 0 ) {
+					
+					int vnum;
+					vnum = atoi(bits[i]);
+					fprintf(out, "%+8.3f %+8.3f %+8.3f\n", vtmp[3*vnum+0], vtmp[3*vnum+1],
+										vtmp[3*vnum+2]);
+				
+				}
+				
+			}
+			
+		}
+		
+		for ( i=0; i<n; i++ ) free(bits[i]);
+		free(bits);
+		
+	}
+	fprintf(out, "\n");
+	
+	fclose(fh);
+	fclose(out);
+	
 	return 0;
 	
 }
-- 
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