I'm trying to load an image that is scaled based on a constant TILESIZE by taking the original image file and loading it to an ALLEGRO_BITMAP then using al_draw_scaled_bitmap to draw it to the final image
#SelectExpand
193void tile::imageLoad
() {
194 std::cout
<< "Loading " << fileName
<< std::endl
;
195 ALLEGRO_BITMAP *unresizedImage
= al_load_bitmap(fileName.c_str
());
196 ALLEGRO_BITMAP *prevTarget
= al_get_target_bitmap();
197 al_set_target_bitmap(image
);
198 int origHeight
= al_get_bitmap_height(unresizedImage
);
199 int origWidth
= al_get_bitmap_width(unresizedImage
);
200 int finalHeight
= ( (float)origHeight
/ (float)origWidth
* TILESIZE
);
201 image
= al_create_bitmap(TILESIZE, finalHeight
);
202 al_draw_scaled_bitmap(unresizedImage,
0,
0, origWidth, origHeight,
0,
0, TILESIZE, finalHeight,
0);
203 std::cout
<< "Created Empty Bitmap";
204 al_set_target_bitmap(prevTarget
);
205 if (!image
) {
206 al_show_native_message_box(display,
"Error",
"Error", fileName.c_str
(), NULL, ALLEGRO_MESSAGEBOX_ERROR
);
207 al_destroy_display(display
);
208 return;
209 } std::cout
<< "Loaded " << fileName
<< std::endl
;
210}
but instead it gives
Assertion failed: src, file C:\dev\allegro_winpkg\universal\allegro\src\transformations.c, line 32
to the console and aborts.
I've confirmed that origWidth, origHeight, and finalHeight have the correct values.
The code below succeeds.
#SelectExpand
182void imageMap::imageLoad
() {
183 std::cout
<< "Loading " << fileName
<< std::endl
;
184 image
= al_load_bitmap(fileName.c_str
()); //fileName.c_str()
185 if (!image
) {
186 al_show_native_message_box(display,
"Error",
"Error", fileName.c_str
(), NULL, ALLEGRO_MESSAGEBOX_ERROR
);
187 al_destroy_display(display
);
188 return;
189 } std::cout
<< "Loaded " << fileName
<< std::endl
;
190}
Can anyone help me with this?
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