Package skyview.geometry.projecter
Class Tea
java.lang.Object
skyview.geometry.Transformer
skyview.geometry.Projecter
skyview.geometry.projecter.Tea
- All Implemented Interfaces:
Serializable
,Component
This class provides for the
translation between coordinates and the TEA Equal Area projection.
The projection is centered at the north pole. The south pole is projected to the four corners at (+/-1, +/-1). The equator projects to the diagonals running between the points (-1,0)->(0,1), (0,1)->(1,0), (1,0)->(0,-1), (-1,0)->(0,-1). These diagonals divide the four unit squares at the center of the coordinate grid into 8 right isoceles triangles.
- See Also:
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionclass
Deproject from the plane back to the unit sphere -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionGet the description of this component.getName()
Get the name of this component.inverse()
Get the inverseboolean
isInverse
(Transformer obj) Are these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.static void
boolean
straddle
(double[][] vertices) Does this pixel go wrap around the standard region of the image? E.g., does it straddle the 180 deg in a Car or Ait projection?boolean
Is it possible for a pixel to straddle the valid region.double[][][]
straddleComponents
(double[][] vertices) If this is a straddling pixel, then return the straddle componentsvoid
transform
(double[] unit, double[] plane) Convert a single point where the output vector is supplied.Methods inherited from class skyview.geometry.Projecter
allValid, getInputDimension, getOutputDimension, getXTiling, getYTiling, shadowPoint, tissot, validPosition
Methods inherited from class skyview.geometry.Transformer
transform, transform
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Constructor Details
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Tea
public Tea()
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Method Details
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getName
Description copied from interface:Component
Get the name of this component. -
getDescription
Description copied from interface:Component
Get the description of this component. -
isInverse
Description copied from class:Transformer
Are these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.- Specified by:
isInverse
in classTransformer
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inverse
Description copied from class:Projecter
Get the inverse -
transform
public void transform(double[] unit, double[] plane) Description copied from class:Transformer
Convert a single point where the output vector is supplied.- Specified by:
transform
in classTransformer
- Parameters:
unit
- The input vector.plane
- The output vector, it may be the same as the input vector if the dimensionalities are the same. All transformers are expected to work with aliased inputs and output.
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main
- Throws:
Exception
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straddleable
public boolean straddleable()Description copied from class:Projecter
Is it possible for a pixel to straddle the valid region.- Overrides:
straddleable
in classProjecter
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straddle
public boolean straddle(double[][] vertices) Description copied from class:Projecter
Does this pixel go wrap around the standard region of the image? E.g., does it straddle the 180 deg in a Car or Ait projection? -
straddleComponents
public double[][][] straddleComponents(double[][] vertices) Description copied from class:Projecter
If this is a straddling pixel, then return the straddle components- Overrides:
straddleComponents
in classProjecter
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