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/*************************************************************************
* Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.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
* Cameras.
*/
#include "dimension-internal.h"
#include <stdlib.h>
// Allocate a new dummy camera
dmnsn_camera *
dmnsn_new_camera(dmnsn_pool *pool)
{
dmnsn_camera *camera = DMNSN_PALLOC(pool, dmnsn_camera);
dmnsn_init_camera(camera);
return camera;
}
// Initialize a camera
void
dmnsn_init_camera(dmnsn_camera *camera)
{
camera->trans = dmnsn_identity_matrix();
}
// Invoke the camera ray function
dmnsn_line
dmnsn_camera_ray(const dmnsn_camera *camera, double x, double y)
{
dmnsn_line ray = camera->ray_fn(camera, x, y);
return dmnsn_transform_line(camera->trans, ray);
}
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