|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.metsci.glimpse.support.projection.TangentPlaneProjection
public class TangentPlaneProjection
A projection which maps a texture with data values spaced uniformly in lat/lon space onto a flat tangent plane defined by the provided TangentPlane object.
Field Summary | |
---|---|
static double |
SIZE_DOWNSAMPLE
|
Constructor Summary | |
---|---|
TangentPlaneProjection(GeoProjection plane,
double minLat,
double maxLat,
double minLon,
double maxLon,
boolean latIsX)
|
|
TangentPlaneProjection(TangentPlane plane,
double minLat,
double maxLat,
double minLon,
double maxLon)
|
Method Summary | |
---|---|
int |
getSizeX(int textureSizeX)
Returns the number of quads in the x direction that the array of data (the texture) should be broken into. |
int |
getSizeY(int textureSizeY)
|
double |
getTextureFractionX(double vertexX,
double vertexY)
Given a position in physical units, return the corresponding location within a rectangular array of data. |
double |
getTextureFractionY(double vertexX,
double vertexY)
|
void |
getVertexXY(double textureFractionX,
double textureFractionY,
float[] resultXY)
Given a position in a rectangular array of data (the texture), return the corresponding location in physical units. |
void |
getVertexXYZ(double textureFractionX,
double textureFractionY,
float[] resultXYZ)
Given a position in a rectangular array of data (the texture), return the corresponding location in physical units. |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final double SIZE_DOWNSAMPLE
Constructor Detail |
---|
public TangentPlaneProjection(GeoProjection plane, double minLat, double maxLat, double minLon, double maxLon, boolean latIsX)
public TangentPlaneProjection(TangentPlane plane, double minLat, double maxLat, double minLon, double maxLon)
Method Detail |
---|
public void getVertexXY(double textureFractionX, double textureFractionY, float[] resultXY)
Projection
This method computes the physical coordinate of the data at (textureFractionX, textureFractionY), and stores them in the resultXY output parameter.
getVertexXY
in interface Projection
textureFractionX
- a relative x index (from 0.0 to 1.0) into the data arraytextureFractionY
- a relative y index (from 0.0 to 1.0) into the data arrayresultXY
- output parameter to be populated with physical coords of the datapublic void getVertexXYZ(double textureFractionX, double textureFractionY, float[] resultXYZ)
Projection
This method computes the physical coordinate of the data at (textureFractionX, textureFractionY), and stores them in the resultXYZ output parameter.
Assigning z coordinates to vertices can be useful even for 2D graphics. For example, it can be used together with z-clipping to avoid rendering some facets.
getVertexXYZ
in interface Projection
textureFractionX
- a relative x index (from 0.0 to 1.0) into the data arraytextureFractionY
- a relative y index (from 0.0 to 1.0) into the data arrayresultXYZ
- output parameter to be populated with physical coords of the datapublic int getSizeX(int textureSizeX)
Projection
For more complicated projections, the value returned essentially defines the granularity or resolution of the projection (since the projection will ultimately be approximated when displayed by drawing a set of small quads).
getSizeX
in interface Projection
textureSizeX
- the length of the data array (the texture) in the x direction
public int getSizeY(int textureSizeY)
getSizeY
in interface Projection
textureSizeY
- the length of the data array (the texture) in the y direction
Projection.getSizeX( int )
public double getTextureFractionX(double vertexX, double vertexY)
InvertibleProjection
This method returns the first (row) index of the data at (vertexX, vertexY).
getTextureFractionX
in interface InvertibleProjection
vertexX
- a x coordinate in physical spacevertexY
- a y coordinate in physical space
public double getTextureFractionY(double vertexX, double vertexY)
getTextureFractionY
in interface InvertibleProjection
vertexX
- a x coordinate in physical spacevertexY
- a y coordinate in physical space
InvertibleProjection.getTextureFractionX( double, double )
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |