30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
#include <vtkCamera.h>
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#include <vtkTransformFilter.h>
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#ifndef VTKBASE_NORMALISEDCARTOGRAPHICCAMERA_H
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#define VTKBASE_NORMALISEDCARTOGRAPHICCAMERA_H
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#endif //VTKBASE_NORMALISEDCARTOGRAPHICCAMERA_H
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/**
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* Constructs a orthographically projected camera that looks at the square x,y in [-1, 1] with z = 0 and w = 1.
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* The space [-1,1] x [-1,1] x {0} will be referred to as the normalised space.
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* @return pointer to camera
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*/
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vtkSmartPointer<vtkCamera> createNormalisedCamera();
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/**
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* Constructs a 4x4 projection matrix that maps homogenious (longitude, latitude, 0, 1) points
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* to the normalised space.
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* TODO: This will soon require UVGrid as a parameter after the advection code is merged properly.
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* TODO: This transformation has room for improvement see:
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* https://github.com/MakeNEnjoy/interactive-track-and-trace/issues/12
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* @return pointer to 4x4 matrix
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*/
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vtkSmartPointer<vtkMatrix4x4> getCartographicTransformMatrix();
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/**
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* Convenience function that converts the 4x4 projection matrix into a vtkTransformFilter
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* @return pointer to transform filter
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*/
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vtkSmartPointer<vtkTransformFilter> createCartographicTransformFilter(); |