A two dimensional projective transformation.
Product Availability
Description
The projective transformation requires a minimum of four points to define the transformation. The projective transformation is only used to transform coordinates digitized directly off high altitude aerial photography or aerial photographs of relatively flat terrain assuming that there is no systematic distortion in the air photos. The projective transformation uses eight parameters.
ProjectiveTransformation2D is defined by the matrix operations necessary for
X = (ax + by + c) / (gx + hy + 1)
Y = (dx + ey + f )/ (gx + hy + 1)
Supported Platforms
Extended Error Information
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
Interfaces
| Interfaces | Description |
|---|---|
| IClone (esriSystem) | Provides access to members that control cloning of objects. |
| IProjectiveTransformation2D | Provides access to members that define and manipulate projective transformations. |
| IProjectiveTransformation2DGEN | Provides access to members that define and manipulate projective transformations. IProjectiveTransformation2DGEN is generic version of IProjectiveTransformation. |
| ISupportErrorInfo | Indicates whether a specific interface can return Automation error objects. |
| ITransformation | Provides access to members that apply a function (or its inverse) to a set of points or measures. The suffix of each method indicates the type of parameters operated on. |
| ITransformationGEN | Provides access to members that apply a function (or its inverse) to a set of points or measures. The suffix of each method indicates the type of parameters operated on. ITransformationGEN is generic version of ITransformation. |