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Description:
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A
vertex is a topological entity representing the end of one or more edges. Vertex refers to a point object in space, and to the edges that it bounds. Other edges are found by following pointers through coedges.
vertex objects are saved and restored as part of the model.
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Derivation:
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vertex : entity : scheme-object
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C++ Type:
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VERTEX
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External Rep:
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#[entity %d %d]
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where the first integer is the entity ID,
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and the second integer is the part ID
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Example:
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; vertex (data type)
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; Create and inquire a vertex object.
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(define my_block (solid:block
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(position 4 8 -1) (position 35 35 35)))
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;; my_block
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(define my_vertices (entity:vertices my_block))
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;; my_vertices
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(vertex? (car (cdr (cdr (cdr my_vertices)))))
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;; #t
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