#15355 - stranger - Wed Jan 21, 2004 11:19 am
Would it be possible to use a photo(jpg format), not a drawing picture to be a background that can be rotated, or even scrolling? From some tutorials, I only know it can be done for a drawing one. is it possible for a photo, and how?
Is there any website teaching about this or topic about this? please help me~
My English is poor, hope you can understand what my question is.
#15357 - creepy - Wed Jan 21, 2004 11:37 am
You can convert your picture to tile data, en use that on mode 1 or 2 on a rotational BG. A probably better solution is to use mode 3 or 5 to display the picture and rotate in this mode.
Mode 3 and 5 are graphics modes so you don't have to convert your piucture to tiles first and both modes don't have palletes (like mode 4), so there are more then enough colors that can be used.
#15388 - sajiimori - Wed Jan 21, 2004 8:47 pm
Also, keep in mind that there is no fundemental difference between a drawn image and a photograph, so anything you can do with a hand-drawn picture can also be done with a photo.
#15402 - tepples - Thu Jan 22, 2004 2:47 am
It's not a question of hand-drawn vs. photographic but rather cel shading vs. continuous shading. Hand-drawn images tend to have sharper edges and more truly flat shaded regions than photos have. Indexed color tends to work a bit better with cel shading.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.
#15404 - sajiimori - Thu Jan 22, 2004 3:27 am
| Quote: |
It's not a question of hand-drawn vs. photographic but rather cel shading vs. continuous shading.
|
It didn't sound to me like stranger's question was about that at all. ;-)
#15411 - tepples - Thu Jan 22, 2004 7:16 am
OK, now that that's out of the way...
If you want to scroll a large continuous-tone image such as a photo smoothly, you'll need to convert it to indexed color and then to tiles. For simplicity's sake, use 256-color tile mode on your first demo. You'll need to make sure that all photos in the game use the same palette; for this, paste all the tiles into one big image. You'll have to learn to swap tiles in and out of VRAM as they scroll into or out of view.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.