Animation CS418 Interactive Computer Graphics John C. Hart - - PowerPoint PPT Presentation

▶

Oct 23, 2023 462 likes •600 views

Animation CS418 Interactive Computer Graphics John C. Hart Keyframe Animation Set target positions for vertices at key frames in animations Linearly interpolate vertex positions between targets at intervening frames A

SLIDE 1

Animation

CS418 Interactive Computer Graphics John C. Hart

SLIDE 2

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92

SLIDE 3

SLIDE 4

SLIDE 5

SLIDE 6

SLIDE 7

SLIDE 8

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

Lots can go wrong (like the feet)

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92

SLIDE 9

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

Lots can go wrong (like the feet)
Can be fixed by adding key frames

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92

SLIDE 10

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

Lots can go wrong (like the feet)
Can be fixed by adding key frames
Piecewise linear approach to animation

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92

SLIDE 11

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

Lots can go wrong (like the feet)
Can be fixed by adding key frames
Piecewise linear approach to animation
Need same number and configuration of

vertices at key frames for intervening frames to make sense

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92

SLIDE 12

Keyframe Animation

Set target positions for vertices at “key”

frames in animations

Linearly interpolate vertex positions

between targets at intervening frames

Lots can go wrong (like the feet)
Can be fixed by adding key frames
Piecewise linear approach to animation
Need same number and configuration of

vertices at key frames for intervening frames to make sense

Need to have correspondences between

two collections of vertices

A motivating example from: Sederberg & Greenwood, A Physically- Based Approach to 2-D Shape Blending, Proc. SIGGRAPH 92