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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
* Canveses.
*/
#include "dimension-internal.h"
/** cleanup_fn for canvases. */
static void dmnsn_canvas_cleanup(void *ptr);
dmnsn_canvas *
dmnsn_new_canvas(dmnsn_pool *pool, size_t width, size_t height)
{
dmnsn_canvas *canvas = DMNSN_PALLOC_TIDY(pool, dmnsn_canvas, dmnsn_canvas_cleanup);
canvas->width = width;
canvas->height = height;
canvas->optimizers = DMNSN_NEW_ARRAY(dmnsn_canvas_optimizer);
canvas->pixels = dmnsn_malloc(sizeof(dmnsn_tcolor)*width*height);
return canvas;
}
void
dmnsn_canvas_cleanup(void *ptr)
{
dmnsn_canvas *canvas = ptr;
/* 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);
}
/* Set a canvas optimizer */
void
dmnsn_canvas_optimize(dmnsn_canvas *canvas,
const dmnsn_canvas_optimizer *optimizer)
{
dmnsn_array_push(canvas->optimizers, optimizer);
}
/* Find an optimizer if it's already installed */
dmnsn_canvas_optimizer *
dmnsn_canvas_find_optimizer(const dmnsn_canvas *canvas,
dmnsn_canvas_optimizer_fn *optimizer_fn)
{
DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer *, i, canvas->optimizers) {
if (i->optimizer_fn == optimizer_fn) {
return i;
}
}
return NULL;
}
/* Set the value of a pixel */
void
dmnsn_canvas_set_pixel(dmnsn_canvas *canvas, size_t x, size_t y,
dmnsn_tcolor tcolor)
{
dmnsn_assert(x < canvas->width && y < canvas->height,
"Canvas access out of bounds.");
dmnsn_assert(!dmnsn_tcolor_isnan(tcolor), "Pixel has NaN component.");
/* Set the pixel */
canvas->pixels[y*canvas->width + x] = tcolor;
/* Call the optimizers */
DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer *, i, canvas->optimizers) {
i->optimizer_fn(canvas, i->ptr, x, y);
}
}
/* Fill a canvas with a solid color */
void
dmnsn_canvas_clear(dmnsn_canvas *canvas, dmnsn_tcolor tcolor)
{
for (size_t x = 0; x < canvas->width; ++x) {
for (size_t y = 0; y < canvas->height; ++y) {
dmnsn_canvas_set_pixel(canvas, x, y, tcolor);
}
}
}
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