visad.java2d
Class MouseBehaviorJ2D

java.lang.Object
  visad.java2d.MouseBehaviorJ2D

All Implemented Interfaces:

MouseBehavior

public class MouseBehaviorJ2D
extends Object
implements MouseBehavior

MouseBehaviorJ2D is the VisAD class for mouse behaviors for Java2D

Constructor Summary

MouseBehaviorJ2D(DisplayRendererJ2D r)
Construct a MouseBehavior for the DisplayRenderer specified

MouseBehaviorJ2D(DisplayRendererJ2D r, Class mhClass)
Construct a MouseBehavior for the DisplayRenderer specified

Method Summary

VisADRay	cursorRay(double[] cursor) Return the VisAD ray corresponding to the VisAD cursor coordinates.
VisADRay	findRay(int screen_x, int screen_y) Return the VisAD ray corresponding to the component coordinates.
MouseHelper	getMouseHelper() Get the helper class used by this MouseBehavior.
int[]	getScreenCoords(double[] position) Return the screen coordinates corresponding to the VisAD coordinates.
void	instance_unmake_matrix(double[] rot, double[] scale, double[] trans, double[] matrix) Get the rotation, scale and translation parameters for the specified matrix.
double[]	make_matrix(double rotx, double roty, double rotz, double scale, double transx, double transy, double transz) Make a transformation matrix to perform the given rotation, scale and translation.
double[]	make_matrix(double rotx, double roty, double rotz, double scalex, double scaley, double scalez, double transx, double transy, double transz) Make a transformation matrix to perform the given rotation, scale and translation.
double[]	make_translate(double transx, double transy) Create a translation matrix.
double[]	make_translate(double transx, double transy, double transz) Create a translation matrix.
double[]	multiply_matrix(double[] a, double[] b) Multiply the two matrices together.

Methods inherited from class java.lang.Object

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

Constructor Detail

MouseBehaviorJ2D

public MouseBehaviorJ2D(DisplayRendererJ2D r)

Construct a MouseBehavior for the DisplayRenderer specified

Parameters:

r - DisplayRenderer to use

MouseBehaviorJ2D

public MouseBehaviorJ2D(DisplayRendererJ2D r,
                        Class mhClass)

Construct a MouseBehavior for the DisplayRenderer specified

Parameters:

r - DisplayRenderer to use

mhClass - MouseHelper subclass to use

Method Detail

getMouseHelper

public MouseHelper getMouseHelper()

Get the helper class used by this MouseBehavior. The MouseHelper defines the actions taken based on MouseEvents.

Specified by:

getMouseHelper in interface MouseBehavior

Returns:

MouseHelper being used.

findRay

public VisADRay findRay(int screen_x,
                        int screen_y)

Return the VisAD ray corresponding to the component coordinates.

Specified by:

findRay in interface MouseBehavior

Parameters:

screen_x - x coordinate of the component

screen_y - y coordinate of the component

Returns:

corresponding VisADRay

See Also:

VisADRay, LocalDisplay.getComponent()

cursorRay

public VisADRay cursorRay(double[] cursor)

Return the VisAD ray corresponding to the VisAD cursor coordinates.

Specified by:

cursorRay in interface MouseBehavior

Parameters:

cursor - array (x,y) of cursor location

Returns:

corresponding VisADRay

See Also:

VisADRay, DisplayRenderer.getCursor()

getScreenCoords

public int[] getScreenCoords(double[] position)

Return the screen coordinates corresponding to the VisAD coordinates.

Specified by:

getScreenCoords in interface MouseBehavior

Parameters:

position - array of VisAD coordinates

Returns:

corresponding (x, y) screen coordinates

make_translate

public double[] make_translate(double transx,
                               double transy,
                               double transz)

Create a translation matrix.

Specified by:

make_translate in interface MouseBehavior

Parameters:

transx - x translation amount

transy - y translation amount

transz - z translation amount

Returns:

new translation matrix. This can be used to translate the current matrix

See Also:

multiply_matrix(double[] a, double[] b)

make_translate

public double[] make_translate(double transx,
                               double transy)

Create a translation matrix.

Specified by:

make_translate in interface MouseBehavior

Parameters:

transx - x translation amount

transy - y translation amount

Returns:

new translation matrix. This can be used to translate the current matrix

See Also:

multiply_matrix(double[] a, double[] b)

multiply_matrix

public double[] multiply_matrix(double[] a,
                                double[] b)

Multiply the two matrices together.

Specified by:

multiply_matrix in interface MouseBehavior

Parameters:

a - first matrix

b - second matrix

Returns:

new resulting matrix

make_matrix

public double[] make_matrix(double rotx,
                            double roty,
                            double rotz,
                            double scale,
                            double transx,
                            double transy,
                            double transz)

Make a transformation matrix to perform the given rotation, scale and translation. This function uses the fast matrix post-concatenation techniques from Graphics Gems.

Specified by:

make_matrix in interface MouseBehavior

Parameters:

rotx - x rotation

roty - y rotation

rotz - z rotation

scale - scaling factor

transx - x translation

transy - y translation

transz - z translation

Returns:

new matrix

make_matrix

public double[] make_matrix(double rotx,
                            double roty,
                            double rotz,
                            double scalex,
                            double scaley,
                            double scalez,
                            double transx,
                            double transy,
                            double transz)

Make a transformation matrix to perform the given rotation, scale and translation. This function uses the fast matrix post-concatenation techniques from Graphics Gems.

Specified by:

make_matrix in interface MouseBehavior

Parameters:

rotx - x rotation

roty - y rotation

rotz - z rotation

scalex - x scaling factor

scaley - y scaling factor

scalez - z scaling factor

transx - x translation

transy - y translation

transz - z translation

Returns:

new matrix

instance_unmake_matrix

public void instance_unmake_matrix(double[] rot,
                                   double[] scale,
                                   double[] trans,
                                   double[] matrix)

Get the rotation, scale and translation parameters for the specified matrix. Results are not valid for non-uniform aspect (scale).

Specified by:

instance_unmake_matrix in interface MouseBehavior

Parameters:

rot - array to hold x,y,z rotation values

scale - array to hold scale value

trans - array to hold x,y,z translation values