Difference between revisions of "User:Labrat/Sandbox"
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| − | [[File:Axis-rotation-axis-tilt-overlays.jpg | + | [[File:Axis-rotation-axis-tilt-overlays.jpg|Axis & rotation overlays]] |
Revision as of 02:32, 2 February 2015
The following axis tilt & rotation overlay is provided by permission of Bill Sempsrott from blueprintbowling.com. It is mathematically correct and is based on a point of view level with the centre of the ball and an infinite distance away. The existing wiki overlay is provided for comparison - the overlay lines approximately correct for a viewer two feet from the ball. For video work from the back of the approach at the height of the centre of the ball, the Blueprint version is correct with a perspective error of less the 0.5%. The difference between the two overlays is discussed in this Blueprint article: http://blueprintbowling.com/blog/Posts/axis-rotation-and-axis-tilt-explained.aspx
