Public 成员函数
	SurfaceShapeProperty (TopoShape face)

boolean	SetSurface (TopoShape face)

void	SetParameters (double U, double V)

boolean	IsCurvatureDefined ()

GPnt	Value ()

GVec	D1U ()

GVec	D1V ()

GVec	D2U ()

GVec	D2V ()

GVec	DUV ()

boolean	IsTangentUDefined ()

GDir	TangentU ()

boolean	IsTangentVDefined ()

GDir	TangentV ()

boolean	IsNormalDefined ()

GDir	Normal ()

boolean	IsUmbilic ()

double	MaxCurvature ()

GDir	GetDirectionOfMax ()

double	MinCurvature ()

GDir	GetDirectionOfMin ()

double	MeanCurvature ()

double	GaussianCurvature ()

详细描述

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获取曲面的局部属性

成员函数说明

◆ D1U()

GVec SurfaceShapeProperty.D1U ( )

Returns the first U derivative.

◆ D1V()

GVec SurfaceShapeProperty.D1V ( )

Returns the first V derivative.

◆ D2U()

GVec SurfaceShapeProperty.D2U ( )

Returns the second U derivatives

◆ D2V()

GVec SurfaceShapeProperty.D2V ( )

Returns the second V derivative.

◆ DUV()

GVec SurfaceShapeProperty.DUV ( )

Returns the second UV cross-derivative.

◆ GaussianCurvature()

double SurfaceShapeProperty.GaussianCurvature ( )

Returns the Gaussian curvature

返回: the Gaussian curvature

◆ IsNormalDefined()

boolean SurfaceShapeProperty.IsNormalDefined ( )

Tells if the normal is defined.

◆ IsTangentUDefined()

boolean SurfaceShapeProperty.IsTangentUDefined ( )

returns True if the U tangent is defined. For example, the tangent is not defined if the two first U derivatives are null.

◆ IsTangentVDefined()

boolean SurfaceShapeProperty.IsTangentVDefined ( )

returns if the V tangent is defined. For example, the tangent is not defined if the two first V derivatives are null.

◆ IsUmbilic()

boolean SurfaceShapeProperty.IsUmbilic ( )

returns True if the point is umbilic(i.e. if the curvature is constant).

◆ MaxCurvature()

double SurfaceShapeProperty.MaxCurvature ( )

Returns the maximum curvature

返回: the maximum curvature

◆ MeanCurvature()

double SurfaceShapeProperty.MeanCurvature ( )

Returns the mean curvature.

返回: the mean curvature.

◆ MinCurvature()

double SurfaceShapeProperty.MinCurvature ( )

Returns the maximum curvature

返回: the maximum curvature

◆ Normal()

GDir SurfaceShapeProperty.Normal ( )

Returns the normal direction.

◆ SetParameters()

void SurfaceShapeProperty.SetParameters	(	double	U,
		double	V
	)

设置计算的位置

参数

U	U值
V	V值

◆ SetSurface()

boolean SurfaceShapeProperty.SetSurface ( TopoShape face )

设置曲面