Class ProjectionSimpleStretch

java.lang.Object
  ProjectionSimpleStretch

All Implemented Interfaces:

IProjection

public class ProjectionSimpleStretch
extends java.lang.Object
implements IProjection

stretches sim coordinates to screen coordinates

Since:

1.0

Constructor Summary

ProjectionSimpleStretch(int nWidth, int nHeight, IEnvironment env)
ensures that the environment env gets displayed on a panel of nWidth by nHeight

Method Summary

int	getScreenComp(int i, double[] arrLfState, int nIdxOff) Finds the ith component in screen coordinates of a vector indicated by the portion of the array arrLfState starting at nIdxOff;
int	height()
int	left()
void	resize(int nNewWidth, int nNewHeight)
void	scaleProjection(int nNewX, int nNewY)
int	scaleRadius(double lfRad) Simple scale function for 2d circles etc.
int[]	scaleVector(double[] arrLfVec, int nIdxOff) Scales (possibly including rotation and flip) a vector, without applying global translation
void	set(int nWidth, int nHeight, IBoundary bound) ensures that the boundary bound gets displayed on a panel of nWidth by nHeight
int	top()
int	width()
void	xlateProjection(int nXOff, int nYOff)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProjectionSimpleStretch

public ProjectionSimpleStretch(int nWidth,
                               int nHeight,
                               IEnvironment env)

ensures that the environment env gets displayed on a panel of nWidth by nHeight

Method Detail

resize

public void resize(int nNewWidth,
                   int nNewHeight)

Specified by:

resize in interface IProjection

set

public void set(int nWidth,
                int nHeight,
                IBoundary bound)

ensures that the boundary bound gets displayed on a panel of nWidth by nHeight

getScreenComp

public int getScreenComp(int i,
                         double[] arrLfState,
                         int nIdxOff)

Finds the ith component in screen coordinates of a vector indicated by the portion of the array arrLfState starting at nIdxOff;

Specified by:

getScreenComp in interface IProjection

Parameters:

i - which component of screen coordinates to get (0=x, 1=y)

arrLfState - global state vector in sim coordinates

nIdxOff - offset index in arrLfState of the coord we're looking for

Returns:

ith component in screen coordinates

scaleVector

public int[] scaleVector(double[] arrLfVec,
                         int nIdxOff)

Scales (possibly including rotation and flip) a vector, without applying global translation

Specified by:

scaleVector in interface IProjection

Parameters:

arrLfVec - array containing vector to scale (transform)

nIdxOff - offset of begining of vector to scale in arrLfVec

Returns:

integer array containing scaled vector discretized to pixel differences.

width

public int width()

Specified by:

width in interface IProjection

height

public int height()

Specified by:

height in interface IProjection

top

public int top()

Specified by:

top in interface IProjection

left

public int left()

Specified by:

left in interface IProjection

scaleRadius

public int scaleRadius(double lfRad)
                throws java.lang.Exception

Simple scale function for 2d circles etc.

Specified by:

scaleRadius in interface IProjection

Throws:

java.lang.Exception

scaleProjection

public void scaleProjection(int nNewX,
                            int nNewY)

Specified by:

scaleProjection in interface IProjection

xlateProjection

public void xlateProjection(int nXOff,
                            int nYOff)

Specified by:

xlateProjection in interface IProjection