leaf trough pages

trocchietto · 12-15-2016, 07:49 AM

A bunch of pdf/ebook readers offer the possibility to browse books leafing trough the page! OnTap you drag the finger and see the transparency of the letters from the other side, dragging the finger down while maintaining the touch state the superior corner of the page come toward the center in the measure of the angle you are going down, the letter are seen on transparence from the other side of the page.

Although I do some coding I cannot dare even to think about how this is achievable? Do you have some tips to make me understand how is possible? there is an open source project that show how is possible to achieve such a complex effect? I do not want to write a viewer sw, there are already too many but definetely I want to become a better android developer.

fonix232 · 12-21-2016, 03:12 PM

This isn't a complex effect. You basically draw an infinite amount of pages (on Android just use a pager with full-page views), and then set the animation to be either a page flip, or anything you like.

This will NOT look good on an e-ink display, though.

trocchietto · 12-21-2016, 06:43 PM

Quote:

Originally Posted by fonix232

This isn't a complex effect. You basically draw an infinite amount of pages (on Android just use a pager with full-page views), and then set the animation to be either a page flip, or anything you like.

This will NOT look good on an e-ink display, though.

wow genial, I see what you mean
, but the one I was pointing out allows you to see exactly the letters from the other side of the page, that is much more difficult I guess

My only argumentation is that for difficult algorithms there is a real long term work

12-15-2016, 07:49 AM	#1
trocchietto Addict Posts: 399 Karma: 2038458 Join Date: Dec 2010 Location: Amsterdam, but I am neapolitan Device: sony 650 ,T2, samsung 7.7, ipad2, ipad mini2, yotaphone2, galax tab s2	leaf trough pages A bunch of pdf/ebook readers offer the possibility to browse books leafing trough the page! OnTap you drag the finger and see the transparency of the letters from the other side, dragging the finger down while maintaining the touch state the superior corner of the page come toward the center in the measure of the angle you are going down, the letter are seen on transparence from the other side of the page. Although I do some coding I cannot dare even to think about how this is achievable? Do you have some tips to make me understand how is possible? there is an open source project that show how is possible to achieve such a complex effect? I do not want to write a viewer sw, there are already too many but definetely I want to become a better android developer.

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12-21-2016, 03:12 PM	#2
fonix232 Enthusiast Posts: 35 Karma: 102 Join Date: Jul 2016 Device: KOA4	This isn't a complex effect. You basically draw an infinite amount of pages (on Android just use a pager with full-page views), and then set the animation to be either a page flip, or anything you like. This will NOT look good on an e-ink display, though.

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