added comments explaining what all the fields of surfmesh_t do

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2600 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/model_brush.h b/model_brush.h
index 120679b1272a5611e720a451bc886661f1fcf65a..a034185d53e17b7e0f56cf9279bb0e4fc7ec4304 100644 (file)
--- a/model_brush.h
+++ b/model_brush.h
@@ -153,18 +153,18 @@ typedef struct surfmesh_s
 {
        // can be multiple meshs per surface
        struct surfmesh_s *chain;
-       int numverts;
-       int numtriangles;
-       float *verts;
-       float *svectors;
-       float *tvectors;
-       float *normals;
-       int *lightmapoffsets;
-       float *str;
-       float *uvw;
-       float *abc;
-       int *index;
-       int *triangleneighbors;
+       int numverts; // number of vertices in the mesh
+       int numtriangles; // number of triangles in the mesh
+       float *verts; // float[verts*4] vertex locations
+       float *svectors; // float[verts*4] direction of 'S' (right) texture axis for each vertex
+       float *tvectors; // float[verts*4] direction of 'T' (down) texture axis for each vertex
+       float *normals; // float[verts*4] direction of 'R' (out) texture axis for each vertex
+       int *lightmapoffsets; // index into surface's lightmap samples for vertex lighting
+       float *str; // float[verts*4] texcoords for surface texture
+       float *uvw; // float[verts*4] texcoords for lightmap texture
+       float *abc; // float[verts*4] texcoords for detail texture
+       int *index; // int[tris*3] triangles of the mesh, 3 indices into vertex arrays for each
+       int *triangleneighbors; // int[tris*3] neighboring triangle on each edge (-1 if none)
 }
 surfmesh_t;