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/*************************************************************************
* Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of Dimension. *
* *
* Dimension is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 3 of the License, or (at *
* your option) any later version. *
* *
* Dimension 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 *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include "realize.h"
#include "parse.h"
#include "utility.h"
dmnsn_scene *
dmnsn_realize(const dmnsn_array *astree)
{
dmnsn_scene *scene = dmnsn_new_scene();
if (!scene) {
return NULL;
}
/* Background color */
dmnsn_sRGB background_sRGB = { .R = 0.0, .G = 0.05, .B = 0.1 };
scene->background = dmnsn_color_from_sRGB(background_sRGB);
/* Allocate a canvas */
scene->canvas = dmnsn_new_canvas(768, 480);
if (!scene->canvas) {
dmnsn_delete_realized_scene(scene);
return NULL;
}
/* Set up the transformation matrix for the perspective camera */
dmnsn_matrix trans = dmnsn_scale_matrix(
dmnsn_vector_construct(
((double)scene->canvas->x)/scene->canvas->y, 1.0, 1.0
)
);
trans = dmnsn_matrix_mul(
dmnsn_translation_matrix(dmnsn_vector_construct(0.0, 0.0, -4.0)),
trans
);
trans = dmnsn_matrix_mul(
dmnsn_rotation_matrix(dmnsn_vector_construct(0.0, 1.0, 0.0)),
trans
);
/* Create a perspective camera */
scene->camera = dmnsn_new_perspective_camera();
if (!scene->camera) {
dmnsn_delete_realized_scene(scene);
return NULL;
}
return scene;
}
void
dmnsn_delete_realized_scene(dmnsn_scene *scene)
{
dmnsn_delete_camera(scene->camera);
dmnsn_delete_canvas(scene->canvas);
dmnsn_delete_scene(scene);
}
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