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/*************************************************************************
* Copyright (C) 2009-2010 Tavian Barnes <tavianator@gmail.com> *
* *
* 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 *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/**
* @file
* Lights.
*/
#ifndef DIMENSION_LIGHT_H
#define DIMENSION_LIGHT_H
/* Forward-declar dmnsn_light */
typedef struct dmnsn_light dmnsn_light;
/**
* Light callback.
* @param[in] light The light itself.
* @param[in] v The point to illuminate.
* @return The color of the light at \p v.
*/
typedef dmnsn_color dmnsn_light_fn(const dmnsn_light *light, dmnsn_vector v);
/** A light. */
struct dmnsn_light {
dmnsn_vector x0; /**< Origin of light rays. */
/* Callbacks */
dmnsn_light_fn *light_fn; /**< Light callback. */
dmnsn_free_fn *free_fn; /**< Desctructor callback. */
/** Generic pointer for light info. */
void *ptr;
};
/**
* Create a dummy light.
* @return The allocated light.
*/
dmnsn_light *dmnsn_new_light(void);
/**
* Delete a light.
* @param[in,out] light The light to delete.
*/
void dmnsn_delete_light(dmnsn_light *light);
#endif /* DIMENSION_LIGHT_H */
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