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Isis Developer Reference
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Isis Developer Reference
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Create a mapping between a projection and other coordinate system. More...
#include <WorldMapper.h>
Public Member Functions | |
| WorldMapper () | |
| Constructs an empty WorldMapper object. | |
| virtual | ~WorldMapper () |
| Destroys the WorldMapper object. | |
| virtual double | ProjectionX (const double worldX) const =0 |
| This pure virtual method will return a projection X coordinate in meters given a world X coordinate. | |
| virtual double | ProjectionY (const double worldY) const =0 |
| This pure virtual method will return a projection Y coordinate in meters given a world Y coordinate. | |
| virtual double | WorldX (const double projectionX) const =0 |
| This pure virtual method will return a world X coordinate given a projection Y coordinate in meters. | |
| virtual double | WorldY (const double projectionY) const =0 |
| This pure virtual method will return a world Y coordinate given a projection Y coordinate in meters. | |
| virtual double | Resolution () const |
| This virtual method will the resolution of the world system relative to one unit in the projection system. | |
Create a mapping between a projection and other coordinate system.
This class can be used to create a mapping between a projection coordinate system and a different coordinate system. Simple examples of this would be a mapping between projection x/y's to cube line/samples or a mapping between projection x/y's and paper x/y's in inches. The class is pure virtual and therefore should never be directly instantiated. Remember the basic premise is to use this class to create a new class which converts coordinates from one system to another (inches to meters and back, meters to pixels and back, etc).
If you would like to see WorldMapper being used in implementation, see the ProjectionFactory class
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inline |
Constructs an empty WorldMapper object.
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inlinevirtual |
Destroys the WorldMapper object.
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pure virtual |
This pure virtual method will return a projection X coordinate in meters given a world X coordinate.
For example, the worldX value could be an X in millimeters on a piece of paper. The value returned would be an X in map projection coordinates.
| worldX | An X value in world coordinates. |
Implemented in Isis::PFPixelMapper.
Referenced by Isis::Projection::SetWorld(), and Isis::Projection::ToProjectionX().
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pure virtual |
This pure virtual method will return a projection Y coordinate in meters given a world Y coordinate.
For example, the worldY value could be an Y in millimeters on a piece of paper. The value returned would be an Y in map projection coordinates.
| worldY | A Y value in world coordinates. |
Implemented in Isis::PFPixelMapper.
Referenced by Isis::Projection::SetWorld(), and Isis::Projection::ToProjectionY().
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inlinevirtual |
This virtual method will the resolution of the world system relative to one unit in the projection system.
For example, one meter in the projection system could be .001 inches on a piece of paper. Unless this method is overridden it will return 1
Reimplemented in Isis::PFPixelMapper.
Referenced by Isis::Projection::Resolution(), Isis::RingPlaneProjection::Scale(), and Isis::TProjection::Scale().
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pure virtual |
This pure virtual method will return a world X coordinate given a projection Y coordinate in meters.
For example, the worldY value could be an Y in millimeters on a piece of paper.
| projectionX | A X value in projection coordinates. |
Implemented in Isis::PFPixelMapper.
Referenced by Isis::Projection::ToWorldX(), and Isis::Projection::WorldX().
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pure virtual |
This pure virtual method will return a world Y coordinate given a projection Y coordinate in meters.
For example, the worldY value could be an Y in millimeters on a piece of paper.
| projectionY | A Y value in projection coordinates. |
Implemented in Isis::PFPixelMapper.
Referenced by Isis::Projection::ToWorldY(), and Isis::Projection::WorldY().