Implementing Onion Skinning in WebGL with TypeScript
GrokBenard
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Question
How to render multiple animation frames as semi-transparent overlays on top of the current frame in WebGL using TypeScript?
Answer
Onion skinning can be achieved by storing each frame as a texture and drawing them in order from back to front using blending. The key steps include creating a texture for each frame, setting up a render loop to draw frames in order, and using blending to achieve transparency.
typescript
class OnionSkinRenderer { ... }typescript
const vsSource = `attribute vec2 a_position; ...`typescript
const fsSource = `precision mediump float; ...`typescript
const offscreen = document.createElement('canvas');typescriptwebglblendingtexturing