MathTransform Class

Inherits from

GeoCalc.CoordOperation

Description

The MathTransform class represents a mathematical transformation that can be applied to CoordPoints. GeoCalc supports several types of MathTransforms, which are outlined in the ClassType enumeration. There are two ways to define a MathTransform.

There first way is to set the various Parameters and Settings needed by the specific type of MathTransform. A description of the Parameters and Settings needed by each type of MathTransform can be found by clicking on the appropriate description from the ClassType enumeration page.

The second way that a MathTransform can be defined is by using the AddPoint and AddPointList methods to add a set of control and observed points for the transform. A control point is a point in the domain of the MathTransform, which can be viewed as a source point or a point that has not yet passed through the MathTransform. An observed point is a point in the codomain of the MathTransform, which can be viewed as a target point or one that has passed through the MathTransform. Once a list of control and observed points has been added, the Solve method is used to find the Parameters and Settings that define the MathTransform from the control points to the observed points.

Constructors

Constructor	Description
MathTransform	Creates a new instance of the MathTransform class

Properties

Property	Description
BaseClass	Gets the base operation type. (Overrides CoordOperation.BaseClass).
Class	Gets the math transform class type.
IsSolved	Indicates whether the math transform has been successfully computed from entered point pairs, or the parameters are otherwise set and the object ready to use.
TypeName	Gets the string name of this math transform class type. (Overrides CoordOperation.TypeName).
Inherited Property	Description
Accuracy	Inherited from CoordOperation.
Is2D	Inherited from CoordOperation.
Parameters	Inherited from CoordOperation.
Reversible	Inherited from CoordOperation.

Methods

Method	Description
AddPoint	Adds a point pair to use to compute the transform parameters.
AddPointList	Adds a collection of point pairs to compute the transform parameters.
Clear	Clears the math transform
Clone	Creates a clone of this object. (Overrides CoordOperation.Clone()).
CreateMathTransform	Helper method to create a new math transform object.
DetermineBestMathTransform	Given a solution of points (source/target), determine the best (highest order) transform that closes within a given tolerance.
Equals	Value equals comparison. (Overrides Object.Equals()).
GetHashCode	Serves as a hash function for a particular type. (Overrides Object.GetHashCode()).
GetMathTransformString	Helper method to equate a math transform class type to the equivalent string.
GetMathTransformType	Helper method to equate a string to the equivalent math transform class type.
GetMathTransformTypes	Helper method to return a list of math transform class types.
ReasonableClosure	Determines whether or not the points in this MathTransform close.
SetSolved	Set the parameters and mark mathtransform as solved.
Solve	Computes the math transform from entered point pairs or checks that the parameters are set and the object ready to use
Transform	Transforms a point.
Inherited Method	Description
GetOperationCodes	Inherited from CoordOperation.
GetType	Gets the Type of the current instance. (Inherited from Object).
IsTimeDependent	Inherited from CoordOperation.
ToString	Returns a string that represents the current object. (Inherited from Object).

Overloaded Operators

Operator	Description
operator=	Assigns a new value to this MathTransform
operator==	Compares the value of two MathTransforms
operator!=	Compares the value of two MathTransforms