CADability dotNET
Returns the point, the two first derivations and the three second derivations of the surface at the provided parameter position.

Namespace: CADability.GeoObject
Assembly: CADability (in CADability.dll) Version: 1.1.4254.24737 (1.1.*)

Syntax

C#
void Derivation2At(
	GeoPoint2D uv,
	out GeoPoint location,
	out GeoVector du,
	out GeoVector dv,
	out GeoVector duu,
	out GeoVector dvv,
	out GeoVector duv
)
Visual Basic
Sub Derivation2At ( _
	uv As GeoPoint2D, _
	<OutAttribute> ByRef location As GeoPoint, _
	<OutAttribute> ByRef du As GeoVector, _
	<OutAttribute> ByRef dv As GeoVector, _
	<OutAttribute> ByRef duu As GeoVector, _
	<OutAttribute> ByRef dvv As GeoVector, _
	<OutAttribute> ByRef duv As GeoVector _
)
Visual C++
void Derivation2At(
	GeoPoint2D uv, 
	[OutAttribute] GeoPoint% location, 
	[OutAttribute] GeoVector% du, 
	[OutAttribute] GeoVector% dv, 
	[OutAttribute] GeoVector% duu, 
	[OutAttribute] GeoVector% dvv, 
	[OutAttribute] GeoVector% duv
)

Parameters

uv
Type: CADability..::..GeoPoint2D
Point in the parameter space
location
Type: CADability..::..GeoPoint%
Resulting 3D point
du
Type: CADability..::..GeoVector%
Resulting derivation in u
dv
Type: CADability..::..GeoVector%
Resulting derivation in v
duu
Type: CADability..::..GeoVector%
dvv
Type: CADability..::..GeoVector%
duv
Type: CADability..::..GeoVector%

See Also