Fabric.js Javascript Canvas LibraryFabric.js is a powerful and simple Javascript HTML5 canvas library Fabric provides interactive object model on top of canvas element Fabric also has SVG-to-canvas (and canvas-to-SVG) parser Using Fabric.js, you can create and populate objects on canvas; objects like simple geometrical shapes
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pure JavaScriptでアニメーションGIFを作る - 海峡
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