ATEC 4371.001 Procedural Animation

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# ATEC 4371.001 Procedural Animation - PowerPoint PPT Presentation

ATEC 4371.001 Procedural Animation. Introduction to Procedural Methods in 3D Computer Animation Dr. Midori Kitagawa. In class. Pay attention Take notes Learn Be ready for a pop quiz. Week 6: Modeling. Assignment 4 review – The earth’s tilt Assignment 6 review Basic modeling methods

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### ATEC 4371.001Procedural Animation

Introduction to Procedural Methods in 3D Computer Animation

Dr. Midori Kitagawa

In class
• Pay attention
• Take notes
• Learn
• Be ready for a pop quiz
Week 6: Modeling
• Assignment 4 review – The earth’s tilt
• Assignment 6 review
• Basic modeling methods
• Assignment 12
Basic Modeling Methods
• Lofting
• Extrusion
• Sweeping
• Surface of evolution
• Boolean operations
Lofting
• Originated in boat design
• 2D cross-sections placed in 3D space are connected by side faces to form a 3D shape.
Extrusion
• Also called projection
• A copy of a 2D profile is made and translated and then the original and copied profiles are connected by side faces to form a 3D shape.
Sweeping
• 2D cross-section is swept along a 3D path to create a 3D shape.
Surface of revolution
• 2D profile is rotated around an axis to create a 3D shape.
Boolean operations
• Boolean operation -- union (or, “u”), intersection (and, “n”), or difference (not, “-”) -- is applied to a pair of objects.

A u B

A - B

B - A

A n B

Boolean operations