Construct · 1 fields · 1 citations

control point: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
controlpoint1 CONSTRUCTSpline control pointBÉZIER · CONTROL POLYGON

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Computer-aided geometric design

A handle that pulls a curve into shape

In computer-aided geometric design a control point is one of the points that define a Bézier or B-spline curve or surface: the curve is a weighted blend of its control points and is pulled toward, but in general does not pass through, them, so dragging a control point reshapes the curve locally and predictably. Farin's Curves and surfaces for CAGD develops the control polygon and its blending functions. The referent is a shape-defining handle for a parametric curve or surface, unrelated to a monumented survey station beyond the shared idea of a point that governs everything around it.[1]

Unit
The coordinates of each defining point in the control polygon
Recovery means
Not applicable
Measured by
Given directly as the control-polygon vertices, together with their weights and knot structure

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Nearby constructs

trilateration3 fields · 3 citationsinvariant · one construct, three systemsaccuracy3 fields · 6 citationsjingle · one word, three constructscontrol4 fields · 5 citationsjingle · one word, four constructs

References

  1. Farin, G. (2002). Curves and surfaces for CAGD: A practical guide (5th ed.). Morgan Kaufmann. ISBN 9781558607378

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