CreateGeographicProjectionModifier
This command creates a GeographicProjectionModifier.
Using This Command
Select a mesh and apply the command.
- Select a mesh.
- Right click and choose GeographicProjectionmodifier from the listed options.
- The software adds a GeographicProjectionmodifier to the mesh construction history.
Figures
This command transforms a mesh from world space into a projected coordinate space using Universal Transverse Mercator [UTM], Lambert Conformal Conic, or Robinson projection. The world space coordinates of the mesh before projection are given in literal latitude and longitude values. Terrain is usually built and configured by Scenome but you can build terrain by yourself if you prefer.
Figure 1.1. The mesh in world space. If you wish to
make a 1×1 degree map of the area between 44 to 45 degrees north latitude
and -90 to -89 degrees west longitude, you create a RectangleGeometryModifier
with Minimum X of -90 and Minimum Y of 44 while Maximum X is -89 and Maximum Y is 45.
The unprojected mesh in world space:
Figure 1.2. The RectangleGeometryModifier parameters:
Figure 1.3. The projected mesh in world space. This mesh
is long way from the origin.
Figure 1.4. The mesh construction history.
Figure 1.5. Because Scenome's modeling is parametric, you can
change the projection with one command and switch to Lambert Conformal Conic instantly. You
can also switch back just as easily.
Figure 1.6. You can also change the size of the mesh very easily. The
second, smaller mesh is shown against the original mesh for comparison. This allows you to
trivially produce terrain with very specific geographic coordinates.
Registration
Command registration information is as follows:
| Category Type | Information |
| Implementation | SCRIPT |
| Module | MODIFIER_SCRIPTS.SSL |
| Category | Modifier Commands |
| GUID | {1F91FA93-F612-46D4-A453-4B81096121A9} |
| Source Name | CreateGeographicProjectionModifier |
| Interface Name | GeographicProjectionModifier |
| Core | No |
| Sample | Yes |
| Access | Modify [mesh] option on main menu or mesh command menu. |
See Also
For more information:
- GeographicProjectionModifier Property Sheet [Universal Transverse Mercator Projection]
- GeographicProjectionModifier Property Sheet [Lambert Conformal Conic Projection]
- GeographicProjectionModifier Property Sheet [Robinson Projection]