From a79085ab984979dbf4f78545f7592c8b47e4a794 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Sat, 7 Jun 2014 14:15:06 -0400
Subject: objects: Refactor how bounding and initialization work.

---
 libdimension/bench/prtree.c   | 20 +++++++++++---------
 libdimension/bench/triangle.c |  2 +-
 2 files changed, 12 insertions(+), 10 deletions(-)

(limited to 'libdimension/bench')

diff --git a/libdimension/bench/prtree.c b/libdimension/bench/prtree.c
index c09a701..dc5a90d 100644
--- a/libdimension/bench/prtree.c
+++ b/libdimension/bench/prtree.c
@@ -40,8 +40,8 @@ dmnsn_fake_inside_fn(const dmnsn_object *object, dmnsn_vector point)
   return true;
 }
 
-static void
-dmnsn_randomize_bounding_box(dmnsn_object *object)
+static dmnsn_bounding_box
+dmnsn_fake_bounding_fn(const dmnsn_object *object, dmnsn_matrix trans)
 {
   dmnsn_vector a, b;
 
@@ -53,18 +53,20 @@ dmnsn_randomize_bounding_box(dmnsn_object *object)
   b.y = 2.0*((double)rand())/RAND_MAX - 1.0;
   b.z = 2.0*((double)rand())/RAND_MAX - 1.0;
 
-  object->bounding_box.min = dmnsn_vector_min(a, b);
-  object->bounding_box.max = dmnsn_vector_max(a, b);
+  return dmnsn_new_bounding_box(dmnsn_vector_min(a, b), dmnsn_vector_max(a, b));
 }
 
+static dmnsn_object_vtable dmnsn_fake_vtable = {
+  .intersection_fn = dmnsn_fake_intersection_fn,
+  .inside_fn = dmnsn_fake_inside_fn,
+  .bounding_fn = dmnsn_fake_bounding_fn,
+};
+
 static dmnsn_object *
 dmnsn_new_fake_object(dmnsn_pool *pool)
 {
   dmnsn_object *object = dmnsn_new_object(pool);
-  /* Generate a bounding box in  (-1, -1, -1), (1, 1, 1) */
-  dmnsn_randomize_bounding_box(object);
-  object->intersection_fn = dmnsn_fake_intersection_fn;
-  object->inside_fn = dmnsn_fake_inside_fn;
+  object->vtable = &dmnsn_fake_vtable;
   return object;
 }
 
@@ -86,7 +88,7 @@ main(void)
   for (size_t i = 0; i < nobjects; ++i) {
     dmnsn_object *object = dmnsn_new_fake_object(pool);
     object->texture = texture;
-    dmnsn_object_initialize(object);
+    dmnsn_object_precompute(object);
     dmnsn_array_push(objects, &object);
   }
 
diff --git a/libdimension/bench/triangle.c b/libdimension/bench/triangle.c
index b149c27..05b8f47 100644
--- a/libdimension/bench/triangle.c
+++ b/libdimension/bench/triangle.c
@@ -40,7 +40,7 @@ main(void)
   dmnsn_object *triangle = dmnsn_new_triangle(pool, vertices);
   triangle->texture = dmnsn_new_texture(pool);
   triangle->texture->pigment = dmnsn_new_pigment(pool);
-  dmnsn_object_initialize(triangle);
+  dmnsn_object_precompute(triangle);
 
   dmnsn_intersection intersection;
   dmnsn_line line;
-- 
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