Spine can also export animated GIFs, PNG or JPEG image sequences and AVI or QuickTime video. Spine exports animation data in its own, documented JSON and binary formats which are ideal for use with the Spine Runtimes.Posing a character with images that can bend becomes as easy as just positioning the bones. When the bones move, the vertices move with them and the mesh is deformed automatically. Weights (often called “skinning”) allow individual vertices in a mesh to be attached to different bones.FFD allows meshes to stretch, squash, bend and bounce in ways that aren’t possible using rectangular images. Free-Form Deformation (FFD) allows you to move individual mesh vertices to deform the image.This improves the fill rate because pixels outside the polygon won’t be drawn, which is especially important for mobile game. Instead of drawing rectangles, meshes allow you to specify a polygon inside your image.This can be used for hit detection and physics integration. Like images, the polygon is manipulated as the bone moves. Use bounding box which is a polygon that is attached to a bone.They provide organization for attachments and enable animations that change attachments to be reused for different characters.
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