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
|
#include "TZR_render.h"
#include "TZR_resource.h"
#include "TZR_globals.h"
#include "sdl_error.h"
#include "sdl_rect_to_rect.h"
#include <SDL2/SDL_render.h>
#include <math.h>
int
_TZR_DrawImage(const TZR_DrawImageArgs *args)
{
if (TZR_GetResourceType(args->id) != TZR_RES_IMAGE) {
fprintf(stderr, "%u isn't an image\n", args->id);
return -1;
}
TZR_Resource *const res = TZR_GetResourcePointer(args->id);
const TZR_Image *const img = &res->image;
if (SDL_SetTextureColorMod(img->ptr, ___tzr_color.r * 255,
___tzr_color.g * 255, ___tzr_color.b * 255))
return sdl_error(-1);
if (SDL_SetTextureAlphaMod(img->ptr, ___tzr_color.a * 255))
return sdl_error(-1);
float scale_x = args->sx;
float scale_y = args->sy;
int simg_width = (args->w == INT_MIN) ? img->width : args->w;
if (simg_width < 0) {
simg_width *= -1;
scale_x *= -1;
}
if (simg_width + args->ix > img->width)
simg_width = img->width - args->ix;
int simg_height = (args->h == INT_MIN) ? img->height : args->h;
if (simg_height < 0) {
simg_height *= -1;
scale_y *= -1;
}
if (simg_height + args->iy > img->height)
simg_height = img->height - args->iy;
const int flip = (SDL_FLIP_HORIZONTAL * (scale_x < 0.0f)) |
(SDL_FLIP_VERTICAL * (scale_y < 0.0f));
const SDL_Rect src = {
args->ix,
args->iy,
simg_width,
simg_height
};
const int width = simg_width * fabs(scale_x);
const int height = simg_height * fabs(scale_y);
const int x = args->x - (scale_x < 0.0f ? width : 0);
const int y = args->y - (scale_y < 0.0f ? height : 0);
const SDL_Rect dest = {
x - (args->center ? (simg_width * scale_x / 2) : 0),
y - (args->center ? (simg_height * scale_y / 2) : 0),
width,
height
};
if (SDL_RenderCopyEx(___tzr_renderer, img->ptr, &src, &dest,
args->r * 360, NULL, flip) < 0)
return sdl_error(-1);
TZR_Rect area;
TZR_RectFromSDLRect(&area, &dest);
return 0;
}
|
