3d free-form deformation
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3D Free-form Deformation. By Chase Khamashta. Background. - PowerPoint PPT PresentationTRANSCRIPT
3D Free-form Deformation
By Chase Khamashta
Background
• In computer graphics, free-form deformation (FFD) is a geometric technique used to model simple deformations of rigid objects. It is based on the idea of enclosing an object within a cube or another hull object, and transforming the object within the hull as the hull is deformed.
Concepts in FFD
• Local Coordinates
• Bezier Curves• Control Points
The Bezier Curve
• Bezier curve equation
• Geometric Representation
The Curve in FFD
• The local coordinates remain the same• Spatial coordinates change according to vertex
location in the local space.
The Curve in FFD (cont.)
• Calculating the new vertex location