How to tile a 30000 x 6000 image for a 480 x 320 screen?
- by Horace Ho
(this is related to another question about implementation on iPhone)
I have a large image, size around 30000 (w) x 6000 (h) pixels. You may consider it's like a big map. I assume I need to crop it up into smaller tiles. Questions:
what is the tile strategy?
Requirements:
whole image (though cropped) can be scrolled up/down/left/right by swipes
zoom in (up to pixel-to-pixel) out (down to screen-fit-by-height) by the 2-finger operation
memory efficiency by lazy loading tiles
Thanks!