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| Draw rgb information from al_get_pixel with al_draw_text |
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geograman
Member #16,048
August 2015
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Heyho, can someone show me the most effective way of how to use al_draw_text to draw the rgb information from al_get_pixel. I tried to do this: currentPixel = al_get_pixel(image, w, h); al_unmap_rgb(currentPixel, &r, &g, &b); al_draw_text(currentFont, al_map_rgb(255, 255, 255), 50, 50, ALLEGRO_ALIGN_LEFT, r); but al_draw_text wants to have a const char. |
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Bruce Perry
Member #270
April 2000
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//Extract the colour values unsigned char r, g, b; al_unmap_rgb(currentPixel, &r, &g, &b); //Use the formatted text function al_draw_textf(currentFont, al_map_rgb(255, 255, 255), 50, 50, ALLEGRO_ALIGN_LEFT, "(%d, %d, %d)", r, g, b);
...I didn't notice you'd already found al_unmap_rgb when I wrote that -- |
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geograman
Member #16,048
August 2015
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Wow, very straightforward, thanks a lot Bruce Perry! |
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