Class TControlPointsCurve
Unit
CastleCurves
Declaration
type TControlPointsCurve = class(TCurve)
Description
A basic abstract class for curves determined my some set of ControlPoints. Note: it is not defined in this class any correspondence between values of T (argument for Point function) and ControlPoints.
Hierarchy
- TObject
- TCurve
- TControlPointsCurve
Overview
Fields
Methods
Description
Fields
Methods
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procedure LoadFromElement(const E: TDOMElement); override; |
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procedure SaveToStream(const Stream: TStream); override; |
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function BoundingBox: TBox3D; override; |
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Bounding box of the curve. In this class, it is simply a BoundingBox of ControlPoints.
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procedure UpdateControlPoints; virtual; |
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Always after changing ControlPoints or TBegin or TEnd and before calling Point (or anything that uses Point, like BoundingBox) call this method. It recalculates necessary things. ControlPoints.Count must be >= 2.
When overriding: always call inherited first.
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constructor Create; |
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Constructor.
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constructor CreateFromEquation(CasScriptCurve: TCasScriptCurve; ControlPointsCount: Cardinal); |
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Calculate initial control points by sampling given TCasScriptCurve, with analytical curve equation. TBegin and TEnd are copied from CasScriptCurve.
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destructor Destroy; override; |
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function ConvexHull: TVector3List; |
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Calculate the convex hull. Caller is responsible for freeing the result.
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