From 9c9fb9d59c2e90fc2bc9066dac514285c9479277 Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Thu, 18 Aug 2011 20:17:37 -0600 Subject: Handle reflection of light and transmitted rays. --- libdimension/dimension/color.h | 4 +++- libdimension/dimension/light.h | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'libdimension/dimension') diff --git a/libdimension/dimension/color.h b/libdimension/dimension/color.h index b135c70..6d706eb 100644 --- a/libdimension/dimension/color.h +++ b/libdimension/dimension/color.h @@ -84,7 +84,9 @@ dmnsn_color dmnsn_color_to_sRGB(dmnsn_color color); /** Greyscale color intensity. */ double dmnsn_color_intensity(dmnsn_color color); /** Add two colors together. */ -dmnsn_color dmnsn_color_add(dmnsn_color color1, dmnsn_color color2); +dmnsn_color dmnsn_color_add(dmnsn_color lhs, dmnsn_color rhs); +/** Subtract two colors. */ +dmnsn_color dmnsn_color_sub(dmnsn_color lhs, dmnsn_color rhs); /** Multiply a color's intensity by \p n. */ dmnsn_color dmnsn_color_mul(double n, dmnsn_color color); /** Return the color at \p n on a gradient from \p c1 at 0 to \p c2 at 1. */ diff --git a/libdimension/dimension/light.h b/libdimension/dimension/light.h index b41a524..36c724a 100644 --- a/libdimension/dimension/light.h +++ b/libdimension/dimension/light.h @@ -34,8 +34,8 @@ typedef struct dmnsn_light dmnsn_light; * @param[in] v The point to illuminate. * @return The direction of light rays pointing from \p v */ -typedef dmnsn_line dmnsn_light_direction_fn(const dmnsn_light *light, - dmnsn_vector v); +typedef dmnsn_vector dmnsn_light_direction_fn(const dmnsn_light *light, + dmnsn_vector v); /** * Light illumination callback. -- cgit v1.2.3