Changes between Version 32 and Version 33 of tutorial

Timestamp:

Jun 30, 2013, 4:34:04 PM (11 years ago)

Author:

leon

Comment:

FIx offset 1

tutorial

@@ -530 +530 @@
 #define MaxGroups   100
 
-GLfloat vertex[MaxVertices][3];
-GLuint  face[MaxFaces][3];
+GLfloat vertex[MaxVertices*3];
+GLuint  face[MaxFaces*3];
 char    group_name[MaxGroups][80];
 int     start_face[MaxGroups];
@@ -547 +547 @@
       {
       case 'v':
-        sscanf(&line[1],  "%f %f %f", &vertex[vertices][0],
-               &vertex[vertices][1], &vertex[vertices][2]);
+        sscanf(&line[1],  "%f %f %f", &vertex[vertices+3],
+               &vertex[vertices*3+1], &vertex[vertices*3+2]);
         ++vertices;
         break;
@@ -556 +556 @@
         break;
       case 'f':
-        sscanf(&line[1],  "%d %d %d", &face[faces][0],
-               &face[faces][1], &face[faces][2]);
-        ++faces;
+        sscanf(&line[1],  "%d %d %d", &face[faces*3],
+               &face[faces*3+1], &face[faces*3+2]);
+        --face[faces*3]; --face[faces*3+1];
+        --face[faces*3+2]; ++faces; 
         break;
       }
@@ -574 +575 @@
   FILE *f = fopen(n, "w"); fprintf(f, "# Wavefront OBJ file\n");
   for (i = 0; i < vertices; i++)
-    fprintf(f, "v %g %g %g\n", vertex[i][0], vertex[i][1], vertex[i][2]);
+    fprintf(f, "v %g %g %g\n", vertex[i*3], vertex[i*3+1], vertex[i*3+2]);
   fprintf(f, "g %s\n", group_name[group_number]);
   for (i = start_face[group_number]; i < start_face[group_number+1]; ++i)
-    fprintf(f, "f %d %d %d\n", face[i][0], face[i][1], face[i][2]);
+    fprintf(f, "f %d %d %d\n", face[i*3]+1, face[i*3+1]+1, face[i*3+2]+1);
   fclose(f);
 }