1. Intro to Physics-Based Animation_冲突文件_zkx_20240828215918

What's Computer Graphics

• 什么是图形学 Computer Graphics：怎么构造 3D 世界，再从 3D 虚拟世界转到 2D 图片

• 计算机视觉 Computer Vision ：相反的方向，怎么从 2D 图片到 3D 世界

• 方向

  1. 几何 Geometry : Modeling the world

  2. 渲染 Rendering : Visualize the 3D world

  3. 动画 Animation : Animate the 3D world

Real-Time Graphics Pipeline

理想情况下的管线 Geomertry (Offline) -> Animation -> Rendering -> Display

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Geometry

Mesh

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• Mesh

  • Vertices (node)

  • Elements (triangles)

• Problems

  • Meshing(Delaunay triangulation)

  • Simplification / subdivision

  • Mesh optimization (smoothing, flows)

  • volumes mesh

• Mesh type

  • Structured Mesh 可以在算法上简化优化

Point Cloud

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通常是扫描时的原始数据

• Problems

  • Mesh reconstruction

  • Sampling

  • Neighborhood search

Volumetric Grid

通常是模拟时使用

• Problems

  • Memory cost

  • Volumetric rendering

Rendering

• Non-Photorealistic 风格化的

• Photorealistic 物理准确的

Animantion

• Character Animation

• Physical Animation

What's compputer graphics used for

图形学有什么用

• Entertainment

• Design

• Augmented reality (AR)

What's physics-based animation?

基于物理的动画 Update the state in every time step

• Position / orientation

• Velocity

• Appearance

Topic

• Rigid Bodies

• Cloth and Hair

• Soft Bodies

• Fluids

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• Hybrid Metheds 如何混合

• Coupling 如何交互