Advertisement Jump to content
Sign in to follow this  

Page turning animation

This topic is 3965 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hi, Has anybody tried creating a page turning animation in DirectX? The pages should bend while being turned. If you have the equation, could you please share it with me? Or give me pointers on how to frame my own time variant equation? Thanks, M

Share this post

Link to post
Share on other sites
First: I've never done it myself.

Second: Pointers on the equations that may be involved.

As far as the calculus of the situation is concerned, just playing around with turning pages, it appears the path that the edge of the paper follows is an ellipse.

Assume your coordinates are: +x to the right, +y up, +z to the top of page.

An ellipse is:

x^2/a^2 + y^2/b^2 = 1

where a is the width of the flat page (along x) and b is the height (along +y)of the edge when it passes over the center of the book (when x=0).

x will vary in time from +a to -a.

y = b * sqrt( 1 - x^2/a^2)

Third: You may want to play with Bezier surfaces.

Share this post

Link to post
Share on other sites
Sign in to follow this  

  • Advertisement

Important Information

By using, you agree to our community Guidelines, Terms of Use, and Privacy Policy. is your game development community. Create an account for your GameDev Portfolio and participate in the largest developer community in the games industry.

Sign me up!