|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectuk.ac.starlink.ttools.plot2.geom.SphereDataGeom
public class SphereDataGeom
Defines positional data coordinates used by an isotropic spherical polar 3-D plot. Singleton class.
Field Summary | |
---|---|
static SphereDataGeom |
INSTANCE
Singleton instance. |
Method Summary | |
---|---|
int |
getDataDimCount()
Returns 3. |
Coord[] |
getPosCoords()
Returns the definitions for the user-supplied coordinates that indicate plot positions. |
String |
getVariantName()
Returns a label for this DataGeom. |
boolean |
hasPosition()
Indicates whether the values read by the readDataPos
method correspond to a point position in the data space. |
boolean |
readDataPos(TupleSequence tseq,
int ic,
double[] dpos)
Determines the positional coordinates in data space for the current row of a supplied tuple sequence. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final SphereDataGeom INSTANCE
Method Detail |
---|
public int getDataDimCount()
getDataDimCount
in interface DataGeom
public boolean hasPosition()
DataGeom
readDataPos
method correspond to a point position in the data space.
If true, a successful read will result in a position array
with a definite value for each coordinate. If false, some of
the coordinates may be NaN. A false return value would be
appropriate for instance if each tuple row for the plot layer
represented by this geom corresponds to a line rather than a
point in the data space.
hasPosition
in interface DataGeom
public String getVariantName()
DataGeom
getVariantName
in interface DataGeom
public Coord[] getPosCoords()
DataGeom
getPosCoords
in interface DataGeom
public boolean readDataPos(TupleSequence tseq, int ic, double[] dpos)
DataGeom
A parameter supplies the index of the column in the tuple
at which the positional coordinate(s) can be found.
Each position is represented by DataGeom.getPosCoords()
columns of
the tuple.
By convention positions are at the start of the tuple,
so if there is one position in the tuple it will be at icol=0,
and there are multiple positions the N'th one will be at
icol=N*getPosCoords().
An array of (at least) DataGeom.getDataDimCount()
elements is
supplied, and on success the data space coordinate values of the
row of interest is written into it.
readDataPos
in interface DataGeom
tseq
- coordinate row sequence,
positioned at the row of interestic
- column index in tseq
at which the
positional information startsdpos
- array into which data space coordinates are written
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |