stuff

[carveJwlIkooP6JGAAIwe30JlM.git] / bvh.h

diff --git a/bvh.h b/bvh.h
index c841939d0cab9d40f7c0741bc637eac5711d8314..a6a7468b7141f6a7c7f13f8cae11725121840b6d 100644 (file)
--- a/bvh.h
+++ b/bvh.h
@@ -13,7 +13,9 @@
  *   user: a pointer back the base of the data you are ordering
  *   system: the system we created above which will deal with the data
  *
- * call bh_create( bh_tree *bh, u32 item_count, u32 item_size )
+ * call bh_create( bh_tree *bh, u32 item_count )
+ * static int bh_ray( bh_tree *bh, u32 inode, v3f co, v3f dir, ray_hit *hit )
+ * static int bh_select( bh_tree *bh, boxf box, u32 *buffer, int len )
  */
 
 typedef struct bh_node bh_node;
@@ -43,7 +45,6 @@ struct bh_system
    void  (*expand_bound)( void *user, boxf bound, u32 item_index );
    float (*item_centroid)( void *user, u32 item_index, int axis );
    void  (*item_swap)( void *user, u32 ia, u32 ib );
-   u32 item_size;
 
    /*
     * Optional:
@@ -53,7 +54,7 @@ struct bh_system
     */
 
    void  (*item_debug)( void *user, u32 item_index );
-   int   (*cast_ray)( void *user, v3f co, v3f dir, ray_hit *hit );
+   int   (*cast_ray)( void *user, u32 index, v3f co, v3f dir, ray_hit *hit );
 };
 
 static void bh_update_bounds( bh_tree *bh, u32 inode )
@@ -130,10 +131,11 @@ static void bh_subdivide( bh_tree *bh, u32 inode )
    bh_subdivide( bh, ir );
 }
 
-static void bh_create( bh_tree *bh, bh_system *sys, u32 item_count )
+static void bh_create( bh_tree *bh, bh_system *sys, void *user, u32 item_count )
 {
    bh->system = sys;
-   bh->nodes = malloc( sys->item_size * (item_count*2-1) );
+   bh->user = user;
+   bh->nodes = malloc( sizeof(bh_node) * (item_count*2-1) );
 
    bh_node *root = &bh->nodes[0];
    bh->node_count = 1;
@@ -146,7 +148,7 @@ static void bh_create( bh_tree *bh, bh_system *sys, u32 item_count )
    bh_update_bounds( bh, 0 );
    bh_subdivide( bh, 0 );
 
-   bh->nodes = realloc( bh->nodes, sys->item_size * bh->node_count );
+   bh->nodes = realloc( bh->nodes, sizeof(bh_node) * bh->node_count );
    vg_success( "BVH done, size: %u/%u\n", bh->node_count, (item_count*2-1) );
 }
 
@@ -202,7 +204,7 @@ static int bh_ray( bh_tree *bh, u32 inode, v3f co, v3f dir, ray_hit *hit )
                u32 idx = inode->start+i;
 
                if( bh->system->cast_ray )
-                  count += bh->system->cast_ray( bh->user, co, dir, hit );
+                  count += bh->system->cast_ray( bh->user, idx, co, dir, hit );
                else
                   count ++;
             }