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authorTavian Barnes <tavianator@gmail.com>2009-11-17 18:32:39 -0500
committerTavian Barnes <tavianator@gmail.com>2009-11-17 18:32:39 -0500
commit9f36c26a7f75a58564f60878c42381b451d7d7ba (patch)
treeec070dd2d2f7078bf3aebba4dade28d69043b375 /libdimension/finishes.c
parent54e1ad43c7629d85f88cefbecdfe3e60e8c42294 (diff)
downloaddimension-9f36c26a7f75a58564f60878c42381b451d7d7ba.tar.xz
Make finish callback a propper BRDF.
Diffstat (limited to 'libdimension/finishes.c')
-rw-r--r--libdimension/finishes.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/libdimension/finishes.c b/libdimension/finishes.c
index befe6c6..d70cfb7 100644
--- a/libdimension/finishes.c
+++ b/libdimension/finishes.c
@@ -21,12 +21,15 @@
#include "dimension.h"
#include <stdlib.h> /* For malloc */
-static dmnsn_color
+dmnsn_color
dmnsn_diffuse_finish_fn(const dmnsn_finish *finish,
- dmnsn_color color, dmnsn_vector x0,
- dmnsn_vector normal, dmnsn_vector reflected)
+ dmnsn_color light, dmnsn_color color,
+ dmnsn_vector ray, dmnsn_vector normal,
+ dmnsn_vector viewer)
{
- return dmnsn_color_mul(dmnsn_vector_dot(normal, reflected), color);
+ double diffuse = dmnsn_vector_dot(ray, normal);
+ dmnsn_color illum = dmnsn_color_illuminate(light, color);
+ return dmnsn_color_mul(diffuse, illum);
}
/* A diffuse finish */