From d47af986a7832add1c149235f44fa8f57b56e6d8 Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Fri, 19 Nov 2010 20:30:14 -0500 Subject: Implement sky spheres. --- libdimension/dimension/color.h | 1 + libdimension/dimension/scene.h | 7 +++++ libdimension/dimension/sky_sphere.h | 63 +++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+) create mode 100644 libdimension/dimension/sky_sphere.h (limited to 'libdimension/dimension') diff --git a/libdimension/dimension/color.h b/libdimension/dimension/color.h index 26ab4bb..e214b66 100644 --- a/libdimension/dimension/color.h +++ b/libdimension/dimension/color.h @@ -79,6 +79,7 @@ typedef struct { /* Standard colors */ extern const dmnsn_color dmnsn_black; /**< Black. */ extern const dmnsn_color dmnsn_white; /**< White. */ +extern const dmnsn_color dmnsn_clear; /**< Clear. */ extern const dmnsn_color dmnsn_red; /**< Red. */ extern const dmnsn_color dmnsn_green; /**< Green. */ extern const dmnsn_color dmnsn_blue; /**< Blue. */ diff --git a/libdimension/dimension/scene.h b/libdimension/dimension/scene.h index 489e4e5..0889359 100644 --- a/libdimension/dimension/scene.h +++ b/libdimension/dimension/scene.h @@ -45,6 +45,7 @@ typedef struct dmnsn_scene { /* World attributes */ dmnsn_color background; /**< Background color. */ dmnsn_color ambient; /**< Global ambient color. */ + dmnsn_sky_sphere *sky_sphere; /**< Sky sphere. */ dmnsn_texture *default_texture; /**< Default object texture. */ /** Camera. */ @@ -85,4 +86,10 @@ dmnsn_scene *dmnsn_new_scene(void); */ void dmnsn_delete_scene(dmnsn_scene *scene); +/** + * Initialize a scene. + * @param[in,out] scene The scene to initalize. + */ +void dmnsn_scene_init(dmnsn_scene *scene); + #endif /* DIMENSION_SCENE_H */ diff --git a/libdimension/dimension/sky_sphere.h b/libdimension/dimension/sky_sphere.h new file mode 100644 index 0000000..5edacb0 --- /dev/null +++ b/libdimension/dimension/sky_sphere.h @@ -0,0 +1,63 @@ +/************************************************************************* + * Copyright (C) 2010 Tavian Barnes * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * . * + *************************************************************************/ + +/** + * @file + * Sky spheres. + */ + +#ifndef DIMENSION_SKY_SPHERE_H +#define DIMENSION_SKY_SPHERE_H + +/** A sky sphere. */ +typedef struct dmnsn_sky_sphere { + /** An array of pigments in inside-to-outside order. */ + dmnsn_array *pigments; + dmnsn_matrix trans; +} dmnsn_sky_sphere; + +/** + * Create a sky sphere. + * @return A new blank sky sphere. + */ +dmnsn_sky_sphere *dmnsn_new_sky_sphere(); + +/** + * Delete a sky sphere. + * @param[in,out] sky_sphere The sky sphere to delete. + */ +void dmnsn_delete_sky_sphere(dmnsn_sky_sphere *sky_sphere); + +/** + * Initialize a sky sphere. + * @param[in,out] sky_sphere The sky sphere to initialize. + */ +void dmnsn_sky_sphere_init(dmnsn_sky_sphere *sky_sphere); + +/** + * Evaluate the color of the sky sphere. + * @param[in] sky_sphere The sky sphere to evaluate. + * @param[in] d The direction to look. + * @return The color of the sky in the direction of \p d. + */ +dmnsn_color dmnsn_sky_sphere_color(const dmnsn_sky_sphere *sky_sphere, + dmnsn_vector d); + +#endif /* DIMENSION_SKY_SPHERE_H */ -- cgit v1.2.3