Drawing3d documented Class Library

Curve3D Methods

The methods of the Curve3D class are listed below. For a complete list of Curve3D class members, see the Curve3D Members topic.

Public Static (Shared) Methods

FindType Gets the associated type of an ID
Register Register a CurveType.
registerAliases Register "alias"-names for some types.

Public Instance Methods

Changed This method is called, when the curve is changed. It fires the event OnChanged
Clone Produces an exact copy of the curve by using the BinaryFormatter. So you have to mark a new instance of Curve with the attribute [Serializable].
Copy Copy the Curve. Some instances override this method.
Derivation It returns the first deriavation of the function defined in the method Value. All parameter t are taken from the interval [fromParam,toParam].
DistanceOverloaded. This method calculates the distance of a LineType to a Curve only in case, when the distance is smaller then MaxDist, otherwise big will be returned. You can imagine a cylinders with radius MaxDist around the Curve. If the line goes through the "curved" cylinder, then the distance will be calculated and returned.
Equals (inherited from Object) 
GetHashCode (inherited from Object) 
GetMaxrectOverloaded. Gets a minimal Box, which contains a curve, transformed by a transformation.
GetType (inherited from Object) 
InsertPoint Inserts a point at the position, which is given by Param.
Invert Inverts the orientation of a curve. The base-method is empty. You should override it in a derived class.
LengthToParam Converts a length to a param, which can be used in the method Value.
NormalCross Calculates a point of a Curve, which is nearest to "Point"
ParamToLength Calculates the length of a part of the curve, which is given from 0 to the value param.
SetBorder Restricts the Curve to the startpoint A and the endpoint B. The method works regular only if A and B are "close to the curve".
Slice This method trims the curve to the part between "from" and "to". The base-method sets fromParam = from and toParam = to. In general this is not the best solution. So it is better to override this method without calling to the base method.
ToArray This method fills values, calculated by the function Value in an array, starting at index.
ToString (inherited from Object) 
ToxyzArray Gets an array of Resolution+1 interpolationpoints.
Transform Transforms a Curve with the transformation given by m. The method in the base class is empty. So you have to override this function, if you want to transform a Curve.
Value Its implement a function from R --> R³
public xyz Value(double t){
return new xyz(cos(t), sin(t),t);
public xyz Drivation(double t){
return new xyz(-sin(t), cos(t),1);
This example implements an screw curve.

Protected Instance Methods

Finalize (inherited from Object) 
getA This is the virtual Get-Method of A. By default it calls 'Value(fromParam)'.
getAtang This method is the getMethod of the Atang-property, which retrieves the start tangent. By default Derivation(fromParam) is returned.
getB This is the virtual Get-Method of B. By default, it provides 'Value(toParam)'.
getBtang This method is the getMethod of the Btang-property, which retrieves the Endtangent. By default Derivaion(toParam) is returned.
GetMaxrectOverloaded. Gets the smaller rectangle, which contains the curve.
getVisible virtual getmethod of the property Visible
MemberwiseClone (inherited from Object) 
setA This is the virtual setter method of the property A
setAtang This is the virtual setter method of the property Atang
setB This is the virtual setter method of the property B
setBtang This is the virtual set method of the property B
SetClosed Virtual Settermethod of Closed-property
setVisible Virtual setmethod of the property Visible

See Also

Curve3D Class | Drawing3d.Curves Namespace