- All Implemented Interfaces:
public class Cah extends Projecter
The projection is centered at 0,45 The projection is bounded by a rectangle with dimensions 6 sqrt(2) x 2 sqrt(6) which is filled in the following fashion. 5 4 2 3 5 5 4 4 2 2 3 3 5 5 5 4 4 4 2 2 2 3 3 3 5 5 4 4 6 0 2 2 3 3 5 4 6 6 0 0 2 3 6 6 6 0 0 0 7 6 6 0 0 1 7 7 6 0 1 1 7 7 7 1 1 1 7 7 1 1 7 1 Note that each number is intended to represent an equilateral triangle so that the representation here is only very approximate. The center of the projection is the middle of the boundary between triangles 0 and 6. The north pole is the intersection of triangles 0,2,4 and 6, while the south pole is at the lonely points of 1,3,5,7 The northern octants are even while the southern octants are odd. You can envisage this figure as unwrapping the four northern octants of an octahedron and pressing them flat and then flipping the southern octants on the equator they share with a northern octant. Note that this projection is staddleable but the straddle is not currently available.
- See Also:
- Serialized Form
Nested Class Summary
Nested Classes Modifier and Type Class Description
Cah.CahDeprojDeproject from the plane back to the unit sphere
Constructors Constructor Description
Modifier and Type Method Description
getDescription()Get the description of this component.
getName()Get the name of this component.
inverse()Get the inverse
isInverse(Transformer obj)Are these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.
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, straddle, straddleable, straddleComponents, tissot, validPosition
public java.lang.String getName()Description copied from interface:
ComponentGet the name of this component.
public java.lang.String getDescription()Description copied from interface:
ComponentGet the description of this component.
public boolean isInverse(Transformer obj)Description copied from class:
TransformerAre these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.
public Deprojecter inverse()Description copied from class:
ProjecterGet the inverse
public void transform(double unit, double plane)Description copied from class:
TransformerConvert a single point where the output vector is supplied.
public static void main(java.lang.String args) throws java.lang.Exception