Chapter06-GeometryPointsLinesPolygons.pdf

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X3D Graphics for Web Authors
Chapter 6
Points, Lines and Polygons
Drawing is a struggle between nature and the artist, in which
the better the artist understands the intentions of nature, the more
easily he will triumph over it. For him it is not a question of copying,
but of interpreting in a simpler and more luminous language.
Charles Baudelaire, On the Ideal and the Model, 1846.
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Chapter Overview
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Many different geometry nodes
An excellent aspect of X3D is that there are
many different ways to create geometry
Chapter 2, Geometry Primitives
•
Chapter 6, Points, Lines and Polygons
•
Chapter 10, Geometry2D Nodes
•
Chapter 13, Triangles and Quadrilaterals
•
These are all handled consistently inside a Shape
node with corresponding Appearance
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Fundamental geometry nodes
Geometry nodes in this chapter include
points, lines, and indexed face sets
These nodes fundamental and can represent
almost any shape
Tools can convert other geometry to simpler forms
•
Thus most are part of Interchange profile for
broadest possible usage and adaptability
•
Some browsers support viewing geometry in
wireframe (line) or point mode, which can help
reveal internal structure
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