CameraProjectOperator.MaxRange Property
Gets or sets the maximal 3D distance from the camera, for which the image can be projected to the ground.
Syntax
public AttributeVariable< System.Double > MaxRange { get; set; }Property Value
Default: 10000.0
The maximal 3D distance from the camera, in meters, for which the image can be projected to the ground.
Remarks
This property does not have to be a constant. Since it is an attribute variable, it can take its value from an attribute of the image feature, or from a user-defined update attribute from the View.
It may seem that no maximal distance should be needed: why couldn't the operator just project the image away from the camera in the right direction until it hits the ground? The answer is that an unlimited range could give performance problems for some values of the camera parameters. For example, if the sum of the camera pitch angle and half the vertical field-of-view angle were positive (with no roll), then the upper corners of the image would be above the horizon of the camera, unless there were a mountain somewhere in the right direction. So, without a specified maximal range, the operator would need to do a time-consuming search for a mountain in the elevation data, by tracing a very long line of sight from the camera through each upper image corner. But thanks to the maximal range, the operator can abandon its mountain quest earlier.
Platforms
Windows, Linux, Android