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Action:
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Returns the number of graph vertices that are connected with graph edges to the specified vertex.
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Filename:
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kern/kern_scm/graph_scm.cxx
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Syntax:
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(graph:degree? in-graph in-vertex)
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Arg Types:
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in-graph
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graph
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in-vertex
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string | entity
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Returns:
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integer
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in-graph specifies a graph.
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in-vertex could be either the designation name used as part of the graph or the model entity associated with that graph vertex.
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Example:
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; graph:degree?
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; Create a simple example
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(define g1 (graph "me-you you-us us-them
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them-they me-they
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FIDO-SPOT SPOT-KING SPOT-PETEY"))
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;; g1
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; CAREFUL: The order of the graph output may
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; not be the same each time.
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(graph:degree? g1 "me")
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;; 2
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(graph:degree? g1 "SPOT")
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;; 3
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(graph:degree? g1 "PETEY")
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;; 1
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; Create an example using entities.
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(define b1 (solid:block
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(position -5 -10 -20) (position 5 10 15)))
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;; b1
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(define faces1 (entity:faces b1))
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;; faces1
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; Turn the block faces into vertices of the graph.
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(define g3 (graph faces1))
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;; g3
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(graph:degree? g3 "(Face 0)")
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;; 4
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(graph:degree? g3 (list-ref faces1 3))
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;; 4
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