python file>The Speed and Timing mode don't change the location of the object , only the speed. This holds true as long as the handles in the graph-editor don't overlap.
Not certain what to do with this file? Read the information on installing Add-Ons.
In the Add-Ons panel it will show up as Animation: Motion Trail.
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A video of Motion Trail 2, showing some of the basic functionality can be seen here.
There are 3 modes in the add-on: Location, Speed and Timing.
The motion trail can display different colours. Most interesting are the speed and acceleration gradients.
Speed: blue is slow, red is fast
Acceleration: green is positive, yellow is no acceleration, red is negative acceleration.
Note: the colours are relative. So each is speed gradient contains both 100% blue and 100% red.
Warning: At the start and end frames the gradients might be slightly off.
Joe Daniels (artofjoe.blogspot.com)
Wayne Dixon (waynedixon.com.au)
Gottfried Hoffman (blenderdiplom.com)
Daniel Martinez Lara (pepeland.com)
Ben Unguren (mostlydocumentary.com)
support thread for this script on BlenderArtists.
Bug tracker and wiki page.