Hello, I'm very confused by the description of bezier interpolation and acceleration scaling for the 2D case, as mentioned in: https://developer.apple.com/library/mac/#documentation/appleapplications/Ref... I've generated the scaling values as per the code listing C-4, and attempted to apply them as mentioned in the second last paragraph: "Now that Final Cut Pro has all the information needed about the Cartesian position of the current line segment along the actual curve, it can update the Bezier structure representing the curve with this data. This process involves recording the start and end position of the segment and calculating the line connecting these points, while scaling the line segment by the calculated acceleration factor. Looping around from point to point, the application calculates the position of all 40 points of the curve." ... but I don't get the curve I'm expecting to get. Surely all points should lie on the original curve, ie. just their parametric values are augmented? Modifying actual piecewise linear segment endpoints doesn't feel like the right thing to do, especially when they're being scaled by the quite large and small values that listing C-4 produces. In any case, can someone with an understanding of this algorithm please describe it in more detail? (pseudocode or code snippet would be great if possible) Many thanks, Richard. _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com