TsgDXFSpline

Unit: DXFConv

This class defines a quadratic or cubic nonuniform rational B-spline (NURBS) curve (entity SPLINE).

TsgDXFSpline = class(TsgCADBasePolyline)

Properties	Description
`BeginningTangent`	The property sets or gets start tangent.
`ControlPoints`	The property realizes the indexed access to all control points.
`Controls`	The property contains list of control points as pointers to the `TFPoint` type.
`EndingTangent`	The property sets or gets end tangent.
`Fit`	The property contains list of fit points as list of the `TsgDXFVertex` class objects.
`FitPoints`	The property realizes the indexed access to all fits point.
`IsByAngles`	The property defines what way spline is built.
`Knots`	The property contains list of knot values as single type values represented as pointers.
`Length`	The property indicates length of a spline.

Derived from TsgCADBasePolyline	Description
`Closed`	The property gets or sets a value indicating whether a polyline is closed.
`DottedPoints`	The property gets a point specified by Index parameter from the `TsgCADBasePolyline.DottedSingPts` list.
`DottedSingPts`	The property gets coordinates of the polyline points as a list of pointers to TFPoint.If a value of IsSolid property is True, DottedSingPts contains a value of Polypoints property.
`Flags`	The property gets or sets a value of polyline flag (bit-coded), default is 0.
`IsPolyZThickness`	The property gets a value indicating whether the polyline has thickness on OZ axis.
`Points`	The property gets a point from the `PolyPoints` list by its index.
`PolyPoints`	The property gets a list of points that belong to the polyline.

Derived from TsgDXFPenLine	Description
`Extrusion`	The property indicates direction to local axis z.
`LineType`	The property returns line type the `TsgDXFLineType` entity.
`Point`	The poroperty contains coordinates for the base point.
`ZThick`	The property contains offset by Z axis (Thickness in AutoCAD terms).

Derived from TsgDXFPenEntity	Description
`Pen`	The property for reaching the `TPen` object, used for drawing.

Derived from TsgDXFEntity	Description
`Box`	The property determines the 3d box embraced the entity.
`Color`	The property gets or sets entity color.
`ColorCAD`	The property gets or sets a color for drawing entities.
`Complex`	The property determines whether a entity is populated with child entities.
`Converter`	The property returns the `TsgDXFConverter` class object.
`Count`	The property indicates the total number of child entities.
`Entities`	The property lists all child entities.
`EntType`	The property indicates type of an entity.
`Handle`	The property is used for finding entity links.
`Layer`	The property points to layer, containing given primitive if this layer is given.
`LineType`	The property sets and gets line type for an entity.
`LineTypeScale`	The property sets and gets the `Linetype` scale.
`LineWeight`	The property sets or gets line weight in millimeters.
`PaperSpace`	The property indicates Model Space and Paper Space entity segregation.
`SrcEnd`	The property indicates end position of the entity description in the source CAD file.
`SrcStart`	The property indicates start position of the entity description in the source CAD file.
`Visibility`	The property sets and gets entities visibility.
`Visible`	The property determines whether the component appears onscreen.

Methods	Description
`AssignEntity`	The method copies properties of source entity to current entity.
`ControlCount`	The method returns count of the control points of the spline.
`Create`	Creates internal objects after creating this object.
`Destroy`	Frees up internal objects before destroying this object.
`FitCount`	The method returns number of the fits points.
`GetPoints`	The method calls the `Proc` procedure with all controls point if spline.

Derived from TsgCADBasePolyline	Description
`DottedCount`	The method returns a quantity of DottedSingPts in the `TsgCADBasePolyline` object.
`GetBoxPoints`	The method see the `TsgDXFEntity.GetBoxPoints` method.
`PointCount`	The method returns a quantity of `PolyPoints` in the `TsgCADBasePolyline` object.

Derived from TsgDXFPenLine	Description
`GetThickness`	The method returns entity's thickness.
`SetLWeight`	The method call `SetLWeight` to change line weight of the entity.

Derived from TsgDXFPenEntity	Description
`SetColor`	The method changes the color used for drawing.

Derived from TsgDXFEntity	Description
`AddEntity`	The method adds a new child entity.
`Clone`	The method copies properties of source entity to current entity (include `Handle`).
`Draw`	The method generates the `OnDraw` event.
`EntName`	The method returns an entity name.
`SetLType`	The method sets line type of the entity.

Derived from TsgDXFEntity	Description
`OnDraw`	The event occurs when the `Draw` method is called.