Class Precision

Precision specifies the order of size of a typical model. For example two points are considered geometrically equal if their distance is less than Precision.eps. Default value for Precision.eps is 1e-6. Precision.epsa is the angular precision. Two directions are considered equal if their angular difference is less than Precision.epsa.

Inheritance

System.Object

Precision

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: CADability

Assembly: CADability.dll

Syntax

public class Precision

Fields

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eps

The maximum distance for which two points are considered geometrically equal.

Declaration

public static double eps

Field Value

Type	Description
System.Double

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epsa

The maximum difference in radians for two angles to be considered geometrically equal.

Declaration

public static double epsa

Field Value

Type	Description
System.Double

Methods

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IsDirectionInPlane(GeoVector, Plane)

Determins, whether the given vector is in the given plane

Declaration

public static bool IsDirectionInPlane(GeoVector dir, Plane pl)

Parameters

Type	Name	Description
GeoVector	dir	The direction
Plane	pl	The plane

Returns

Type	Description
System.Boolean	true, if the direction is in the plane

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IsEqual(Angle, Angle)

Declaration

public static bool IsEqual(Angle a1, Angle a2)

Parameters

Type	Name	Description
Angle	a1
Angle	a2

Returns

Type	Description
System.Boolean

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IsEqual(GeoPoint, GeoPoint)

Determins, whether the given points are almost identical, i.e. the distance of the points is less than eps.

Declaration

public static bool IsEqual(GeoPoint p1, GeoPoint p2)

Parameters

Type	Name	Description
GeoPoint	p1	first point
GeoPoint	p2	second point

Returns

Type	Description
System.Boolean	true: almost identical, false: different

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IsEqual(GeoPoint, GeoPoint[])

Returns true if the distance of each point from p to c is less than eps.

Declaration

public static bool IsEqual(GeoPoint c, params GeoPoint[] p)

Parameters

Type	Name	Description
GeoPoint	c	the center to test to
GeoPoint[]	p	points to test

Returns

Type	Description
System.Boolean	true if all points are close, false otherwise

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IsEqual(GeoPoint[])

Declaration

public static bool IsEqual(GeoPoint[] pnts)

Parameters

Type	Name	Description
GeoPoint[]	pnts

Returns

Type	Description
System.Boolean

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IsEqual(GeoPoint2D, GeoPoint2D)

Declaration

public static bool IsEqual(GeoPoint2D p1, GeoPoint2D p2)

Parameters

Type	Name	Description
GeoPoint2D	p1
GeoPoint2D	p2

Returns

Type	Description
System.Boolean

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IsEqual(GeoPoint2D, GeoPoint2D[])

Returns true if the distance of each point from p to c is less than eps.

Declaration

public static bool IsEqual(GeoPoint2D c, params GeoPoint2D[] p)

Parameters

Type	Name	Description
GeoPoint2D	c	the center to test to
GeoPoint2D[]	p	points to test

Returns

Type	Description
System.Boolean	true if all points are close, false otherwise

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IsEqual(GeoVector, GeoVector)

Declaration

public static bool IsEqual(GeoVector v1, GeoVector v2)

Parameters

Type	Name	Description
GeoVector	v1
GeoVector	v2

Returns

Type	Description
System.Boolean

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IsEqual(GeoVector2D, GeoVector2D)

Declaration

public static bool IsEqual(GeoVector2D v1, GeoVector2D v2)

Parameters

Type	Name	Description
GeoVector2D	v1
GeoVector2D	v2

Returns

Type	Description
System.Boolean

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IsEqual(Plane, Plane)

Determins, whether the two planes are almost identical, i.e. the angular difference is less than epsa and the distance of then location of p2 to the plane p1 is less than eps. The DirectionX, DirectionY and Location properties of the two planes may be completely different, the two coordinate systems of the planes may be different.

Declaration

public static bool IsEqual(Plane p1, Plane p2)

Parameters

Type	Name	Description
Plane	p1	first plane
Plane	p2	second plane

Returns

Type	Description
System.Boolean

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IsEqual(Double, Double)

Declaration

public static bool IsEqual(double d1, double d2)

Parameters

Type	Name	Description
System.Double	d1
System.Double	d2

Returns

Type	Description
System.Boolean

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IsNormedVector(GeoVector)

Declaration

public static bool IsNormedVector(GeoVector v)

Parameters

Type	Name	Description
GeoVector	v

Returns

Type	Description
System.Boolean

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IsNull(Angle)

Declaration

public static bool IsNull(Angle a)

Parameters

Type	Name	Description
Angle	a

Returns

Type	Description
System.Boolean

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IsNull(SweepAngle)

Declaration

public static bool IsNull(SweepAngle sw)

Parameters

Type	Name	Description
SweepAngle	sw

Returns

Type	Description
System.Boolean

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IsNull(Double)

Declaration

public static bool IsNull(double l)

Parameters

Type	Name	Description
System.Double	l

Returns

Type	Description
System.Boolean

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IsNullVector(GeoVector)

Determins, whether the length of the given vector is almost 0, i.e. the length is less than eps

Declaration

public static bool IsNullVector(GeoVector v)

Parameters

Type	Name	Description
GeoVector	v	the vector to test

Returns

Type	Description
System.Boolean	true if null-vector, false otherwise

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IsNullVector(GeoVector2D)

Declaration

public static bool IsNullVector(GeoVector2D v)

Parameters

Type	Name	Description
GeoVector2D	v

Returns

Type	Description
System.Boolean

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IsPerpendicular(GeoVector, GeoVector, Boolean)

Declaration

public static bool IsPerpendicular(GeoVector v1, GeoVector v2, bool VectorsAreNormalized)

Parameters

Type	Name	Description
GeoVector	v1
GeoVector	v2
System.Boolean	VectorsAreNormalized

Returns

Type	Description
System.Boolean

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IsPerpendicular(GeoVector2D, GeoVector2D, Boolean)

Declaration

public static bool IsPerpendicular(GeoVector2D v1, GeoVector2D v2, bool VectorsAreNormalized)

Parameters

Type	Name	Description
GeoVector2D	v1
GeoVector2D	v2
System.Boolean	VectorsAreNormalized

Returns

Type	Description
System.Boolean

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IsPointOnLine(GeoPoint, GeoPoint, GeoPoint)

Declaration

public static bool IsPointOnLine(GeoPoint testPoint, GeoPoint startPoint, GeoPoint endPoint)

Parameters

Type	Name	Description
GeoPoint	testPoint
GeoPoint	startPoint
GeoPoint	endPoint

Returns

Type	Description
System.Boolean

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IsPointOnLine(GeoPoint2D, GeoPoint2D, GeoPoint2D)

Declaration

public static bool IsPointOnLine(GeoPoint2D testPoint, GeoPoint2D startPoint, GeoPoint2D endPoint)

Parameters

Type	Name	Description
GeoPoint2D	testPoint
GeoPoint2D	startPoint
GeoPoint2D	endPoint

Returns

Type	Description
System.Boolean

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IsPointOnPlane(GeoPoint, Plane)

Determins, whether the 3D point is on the plane. This is true when either the distance of the point to the plane is less than eps, or the elevation of the vector from the location of the plane to the point is less than epsa

Declaration

public static bool IsPointOnPlane(GeoPoint p, Plane pl)

Parameters

Type	Name	Description
GeoPoint	p	The point
Plane	pl	The plane

Returns

Type	Description
System.Boolean	true, if the point is on the plane

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OppositeDirection(GeoVector, GeoVector)

Declaration

public static bool OppositeDirection(GeoVector v1, GeoVector v2)

Parameters

Type	Name	Description
GeoVector	v1
GeoVector	v2

Returns

Type	Description
System.Boolean

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OppositeDirection(GeoVector2D, GeoVector2D)

Declaration

public static bool OppositeDirection(GeoVector2D v1, GeoVector2D v2)

Parameters

Type	Name	Description
GeoVector2D	v1
GeoVector2D	v2

Returns

Type	Description
System.Boolean

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SameDirection(GeoVector, GeoVector, Boolean)

Determins, whether the directions of the given vectors are almost identical, i.e. the angular difference is less than epsa. This is also true for opposite directions.

Declaration

public static bool SameDirection(GeoVector v1, GeoVector v2, bool VectorsAreNormalized)

Parameters

Type	Name	Description
GeoVector	v1	first vector
GeoVector	v2	second vector
System.Boolean	VectorsAreNormalized	true, if the vectors are already normalized, false if not or unknown

Returns

Type	Description
System.Boolean	true: almost same direction, false: different directions

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SameDirection(GeoVector2D, GeoVector2D, Boolean)

Determins, whether the directions of the given vectors are almost identical, i.e. the angular difference is less than epsa.

Declaration

public static bool SameDirection(GeoVector2D v1, GeoVector2D v2, bool VectorsAreNormalized)

Parameters

Type	Name	Description
GeoVector2D	v1	first vector
GeoVector2D	v2	second vector
System.Boolean	VectorsAreNormalized	true, if the vectors are already normalized, false if not or unknown

Returns

Type	Description
System.Boolean	true: almost same direction, false: different directions

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SameNotOppositeDirection(GeoVector, GeoVector)

Declaration

public static bool SameNotOppositeDirection(GeoVector v1, GeoVector v2)

Parameters

Type	Name	Description
GeoVector	v1
GeoVector	v2

Returns

Type	Description
System.Boolean

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SameNotOppositeDirection(GeoVector2D, GeoVector2D, Boolean)

Declaration

public static bool SameNotOppositeDirection(GeoVector2D v1, GeoVector2D v2, bool VectorsAreNormalized)

Parameters

Type	Name	Description
GeoVector2D	v1
GeoVector2D	v2
System.Boolean	VectorsAreNormalized

Returns

Type	Description
System.Boolean

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SetFromModel(Model)

Declaration

public static void SetFromModel(Model m)

Parameters

Type	Name	Description
Model	m