MathHelper Class |
Utility math functions and constants.
Inheritance HierarchyNamespace: DXFReaderNET
Assembly: DXFReaderNET (in DXFReaderNET.dll) Version: 20.8.4
SyntaxThe MathHelper type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | MathHelper | Initializes a new instance of the MathHelper class |
Properties
Methods| Name | Description | |
|---|---|---|
 | Angle2Points(Vector2, Vector2) |
Obtains the angle between two points.
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| Angle2Points(Vector3, Vector3) |
Obtains the angle between two points.
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| ArbitraryAxis |
Gets the rotation matrix from the normal vector (extrusion direction) of an entity.
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| ArcAnglesFrom3Points |
Returns the start angle and the end angle of a arc specifing start point, end point and a pont on it.
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| BulgeArea |
Returns the bulge area.
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| BulgeLenght |
Returns the bulge lenght.
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| BulgeParam |
Returns the bulge parameters like center, radius, etc.
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| CircleCenterFrom3Points |
Returns the center point of a arc/circle passing for three points.
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| EntitiesToPolygon |
Returns a list of vectors of given entites.
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| EntityInsideEntities |
Checks if an entity is contained in a list of entities representing a closed contour.
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| EntityInsideEntity |
Checks if an entity is contained in another entity.
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| EntityInsidePolygon |
Checks if an entity is contained in a list of vectors representing a polygon.
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| EntityOutsidePoint |
Find the entity surrounding a given point from a list of entities.
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| ExternalContour |
Find the external contour of a group of entities.
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| FindArcArcIntersections |
Calculates the intersection points of two arcs.
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| FindArcCircleIntersections |
Calculates the intersection points of an arc and a circle.
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| FindCircleCircleIntersections |
Calculates the intersection points of two arcs.
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| FindIntersection(Vector2, Vector2, Vector2, Vector2) |
Calculates the intersection point of two lines.
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| FindIntersection(Vector2, Vector2, Vector2, Vector2, Double) |
Calculates the intersection point of two lines.
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| FindIntersections |
Find intersections point between tho entities.
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| FindLineArcIntersections |
Calculates the intersection points of a line and an arc.
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| FindLineCircleIntersections |
Calculates the intersection points of a line and a circle.
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| FindLineLineIntersection |
Calculates the intersection point of two lines.
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| FootPerpendicular |
Find the foot of a perpendicular.
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| IsEqual(Double, Double) |
Checks if a number is equal to another.
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| IsEqual(Double, Double, Double) |
Checks if a number is equal to another.
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| IsOne(Double) |
Checks if a number is close to one.
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| IsOne(Double, Double) |
Checks if a number is close to one.
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| IsZero(Double) |
Checks if a number is close to zero.
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| IsZero(Double, Double) |
Checks if a number is close to zero.
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| NormalizeAngle |
Normalizes the value of an angle in degrees between [0, 360[.
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| PointInPolygon(EntityObject, Vector2) |
Determines if the given point is inside the polygon defined by an entity.
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| PointInPolygon(IEnumerableEntityObject, Vector2) |
Determines if the given point is inside the polygon defined by a list of entities.
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| PointInPolygon(ListVector2, Vector2) |
Checks if a point is contained in a list of vectors representing a polygon.
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| PointInPolygon(Vector2, Vector2) |
Determines if the given point is inside the polygon.
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| PointInRectangle |
Checks if a point is inside a rectangle.
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| PointInSegment |
Checks if a point is inside a line segment.
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| PointOnArcSegment |
Checks if a point is inside an arc segment.
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| PointOnLineSegment |
Checks if a point is inside a line segment.
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| PolygonArea |
Returns the area value of a polygon.
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| PolygonCenter |
Determines the center of a polygon.
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| PolygonLenght |
Returns the lenght value of a polygon.
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| RotateAboutAxis |
Rotate given vector of angle in radians about a specified axis.
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| Round |
Rounds a double-precision floating-point value accordind the epsilon property.
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| RoundToNearest |
Round off a numeric value to the nearest of another value.
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| Transform(IEnumerableVector2, Double, CoordinateSystem, CoordinateSystem) |
Transforms a point list between coordinate systems.
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| Transform(IEnumerableVector3, Vector3, CoordinateSystem, CoordinateSystem) |
Transforms a point list between coordinate systems.
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| Transform(Vector2, Double, CoordinateSystem, CoordinateSystem) |
Transforms a point between coordinate systems.
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| Transform(Vector3, Vector3, CoordinateSystem, CoordinateSystem) |
Transforms a point between coordinate systems.
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| TriangleArea |
Calculates area of a triangle.
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Fields| Name | Description | |
|---|---|---|
 | DegToGrad |
Constant to transform an angle between degrees and gradians.
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| DegToRad |
Constant to transform an angle between degrees and radians.
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| GradToDeg |
Constant to transform an angle between degrees and gradians.
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| HalfPI |
PI/2 (90 degrees)
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| PI |
PI (180 degrees)
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| RadToDeg |
Constant to transform an angle between degrees and radians.
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| ThreeHalfPI |
3*PI/2 (270 degrees)
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| TwoPI |
2*PI (360 degrees)
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See Also