NURB Curves: A Guide for the Uninitiated
January 17th, 2009
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This material, though a little bit old, will come in useful one day. It gives a good run through of NURBS.
DOWNLOAD: a-guide-for-the-uninitiated
Archive
Archive for the ‘Knowledge’ Category
Free Rhino tutorials download–pivot
December 9th, 2008
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Rhino basic tutorials
Intro: what is nurbs?General modeling tips.Analyzing Shape.
Rhino Interface&Settings
Intro: Interface and Settings in Rhinoceros
Mouse tutorial
Intro: Modeling a computer mouse in Rhino
Hood tutorial
Intro: Modeling a hood in Rhino
Geometric continuity
November 19th, 2008
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Curve continuity
Part 1 Curve continuity
<Quote: Rhinoceros Help>
Position (G0)
The end points of curves share the xyz coordinate.the curves are position continuous (G0) at the ends.
Tangent (G1)
Tangency measures position and curve direction at the ends. The direction is determined by the first and second point on each curve. If these all fall on a line then two curves are tangent (G1) at the ends. Curves and surfaces with G1 continuity are also G0 continuous.
Curvature (G2)
Curvature continuity between two curves measures position, direction, and radius of curvature at the ends. If the radius of curvature is the same at the common end point, curves are curvature continuous (G2). This condition is not easy to determine by just looking at where the points are located. Curves and surfaces with G2 continuity are also G1 and therefore G0 continuous.