The best alternatives to FloorSketch are Pose Animator, VR Sketch, and BeHuman. If these 3 options don't work for you, we've listed a few more alternatives below.
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Pose Animator takes a 2D vector illustration and animates its containing curves in real-time based on the recognition result from PoseNet and FaceMesh. It borrows the idea of skeleton-based animation from computer graphics and applies it to vector characters.
Vizcom comes with Ai enabled creative tools such as Sketch2Render that accelerate the creative process for artists and designers. A way to quickly visualize your 2D sketches in seconds not hours.