|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.metsci.glimpse.support.projection.GenericProjection
public class GenericProjection
An alternative means of specifying a general projection. The cleanest method is to implement Projection (and possibly InvertibleProjection) and manually calculate the texture fraction and vertex coordinates for any given inputs. GenericProjection instead allows the vertices of the projection to be directly specified.
Constructor Summary | |
---|---|
GenericProjection(double[][] coordsX,
double[][] coordsY)
|
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)
|
void |
getVertexXY(double dataFractionX,
double dataFractionY,
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 |
Constructor Detail |
---|
public GenericProjection(double[][] coordsX, double[][] coordsY)
Method Detail |
---|
public void getVertexXY(double dataFractionX, double dataFractionY, 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
dataFractionX
- a relative x index (from 0.0 to 1.0) into the data arraydataFractionY
- 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 )
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |