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I am trying to do something simple yet i haven't found a way to do it in blender that is animating the drawing of borders of a shape (rectangles, triangles...) you can see an example on youtube of the result i am trying to achieve : How to Animate Shape Borders in Adobe After Effects CC (2017)

If anyone has a good technique to do it or a blender file it would be cool.

Thanks.

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You can add a Bezier Curve and make it any shape you want to. SHFT +A > Curve > Bezier.

Add Curve

"Extrude" it to add some width.

enter image description here

Then Animate the start and/or end of the Bevel Factor. Hover your mouse over the Start or End input box of the Curve press I move the Playhead in the Timeline, change the value and hover your mouse over the Start or End input box press I again.

enter image description here

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