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/*************************************************************************
* Copyright (C) 2009-2010 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
* Canveses.
*/
#include "dimension.h"
#include <stdlib.h> /* For dmnsn_free() */
/* Allocate a new canvas, of width x and height y */
dmnsn_canvas *
dmnsn_new_canvas(size_t width, size_t height)
{
dmnsn_canvas *canvas = dmnsn_malloc(sizeof(dmnsn_canvas));
canvas->width = width;
canvas->height = height;
canvas->optimizers = dmnsn_new_array(sizeof(dmnsn_canvas_optimizer));
canvas->pixels = dmnsn_malloc(sizeof(dmnsn_color)*width*height);
canvas->refcount = dmnsn_new_refcount();
return canvas;
}
/* Delete a dmnsn_canvas allocated with dmnsn_new_canvas */
void
dmnsn_delete_canvas(dmnsn_canvas *canvas)
{
if (canvas && DMNSN_DECREF(canvas)) {
dmnsn_delete_refcount(canvas->refcount);
/* Free the optimizers */
DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer *, i, canvas->optimizers) {
if (i->free_fn) {
i->free_fn(i->ptr);
}
}
dmnsn_delete_array(canvas->optimizers);
/* Free the pixels and canvas */
dmnsn_free(canvas->pixels);
dmnsn_free(canvas);
}
}
/* Set a canvas optimizer */
void
dmnsn_optimize_canvas(dmnsn_canvas *canvas, dmnsn_canvas_optimizer optimizer)
{
dmnsn_array_push(canvas->optimizers, &optimizer);
}
/* Set the color of a pixel */
void
dmnsn_set_pixel(dmnsn_canvas *canvas, size_t x, size_t y,
dmnsn_color color)
{
dmnsn_assert(x < canvas->width && y < canvas->height,
"Canvas access out of bounds.");
/* Set the pixel */
canvas->pixels[y*canvas->width + x] = color;
/* Call the optimizers */
DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer *, i, canvas->optimizers) {
i->optimizer_fn(canvas, *i, x, y);
}
}
/* Fill a canvas with a solid color */
void
dmnsn_clear_canvas(dmnsn_canvas *canvas, dmnsn_color color)
{
for (size_t x = 0; x < canvas->width; ++x) {
for (size_t y = 0; y < canvas->height; ++y) {
dmnsn_set_pixel(canvas, x, y, color);
}
}
}
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