1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*************************************************************************
* Copyright (C) 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/>. *
*************************************************************************/
#include "dimension.h"
#include <pthread.h>
#include <stdlib.h> /* For free() */
/* Allocate a new canvas, of width x and height y */
dmnsn_canvas *
dmnsn_new_canvas(size_t x, size_t y)
{
/* Allocate the dmnsn_canvas struct */
dmnsn_canvas *canvas = dmnsn_malloc(sizeof(dmnsn_canvas));
/* Set the width and height */
canvas->x = x;
canvas->y = y;
/* Allocate room for the optimizers */
canvas->optimizers = dmnsn_new_array(sizeof(dmnsn_canvas_optimizer));
/* Allocate the pixels */
canvas->pixels = dmnsn_malloc(sizeof(dmnsn_color)*x*y);
return canvas;
}
/* Delete a dmnsn_canvas allocated with dmnsn_new_canvas */
void
dmnsn_delete_canvas(dmnsn_canvas *canvas)
{
if (canvas) {
/* 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 */
free(canvas->pixels);
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)
{
/* Set the pixel */
canvas->pixels[y*canvas->x + 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->x; ++x) {
for (size_t y = 0; y < canvas->y; ++y) {
dmnsn_set_pixel(canvas, x, y, color);
}
}
}
|
