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author | Tavian Barnes <tavianator@tavianator.com> | 2014-05-27 19:08:09 -0400 |
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committer | Tavian Barnes <tavianator@tavianator.com> | 2014-05-27 19:08:56 -0400 |
commit | 7d4646404b96c970eb141289c2aa8b3937282842 (patch) | |
tree | 64d432a58b2292a0591e664b8d016fb5bbdacde9 /libdimension/lambertian.c | |
parent | d96168d4659f5e5cd2f71994a94b6aeafd62e11e (diff) | |
download | dimension-7d4646404b96c970eb141289c2aa8b3937282842.tar.xz |
finish: Remove ->ptr fields.
Diffstat (limited to 'libdimension/lambertian.c')
-rw-r--r-- | libdimension/lambertian.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/libdimension/lambertian.c b/libdimension/lambertian.c index 17bed6d..9b305df 100644 --- a/libdimension/lambertian.c +++ b/libdimension/lambertian.c @@ -27,28 +27,31 @@ #include <math.h> #include <stdlib.h> +/** Lambertian diffuse type. */ +typedef struct dmnsn_lambertian { + dmnsn_diffuse diffuse; + double coeff; +} dmnsn_lambertian; + /** Diffuse finish callback. */ static dmnsn_color dmnsn_lambertian_diffuse_fn(const dmnsn_diffuse *diffuse, dmnsn_color light, dmnsn_color color, dmnsn_vector ray, dmnsn_vector normal) { - double *coeff = diffuse->ptr; - double diffuse_factor = fabs((*coeff)*dmnsn_vector_dot(ray, normal)); + const dmnsn_lambertian *lambertian = (const dmnsn_lambertian *)diffuse; + double diffuse_factor = fabs((lambertian->coeff)*dmnsn_vector_dot(ray, normal)); return dmnsn_color_mul(diffuse_factor, dmnsn_color_illuminate(light, color)); } dmnsn_diffuse * -dmnsn_new_lambertian(double diffuse) +dmnsn_new_lambertian(double coeff) { - dmnsn_diffuse *lambertian = dmnsn_new_diffuse(); - - double *param = DMNSN_MALLOC(double); - *param = diffuse; - - lambertian->diffuse_fn = dmnsn_lambertian_diffuse_fn; - lambertian->free_fn = dmnsn_free; - lambertian->ptr = param; + dmnsn_lambertian *lambertian = DMNSN_MALLOC(dmnsn_lambertian); + lambertian->coeff = coeff; - return lambertian; + dmnsn_diffuse *diffuse = &lambertian->diffuse; + dmnsn_init_diffuse(diffuse); + diffuse->diffuse_fn = dmnsn_lambertian_diffuse_fn; + return diffuse; } |