Package org.biojava.nbio.structure.gui.util.color

Class LinearColorInterpolator

java.lang.Object

org.biojava.nbio.structure.gui.util.color.LinearColorInterpolator

All Implemented Interfaces:

ColorInterpolator

public class LinearColorInterpolator
extends Object
implements ColorInterpolator

Author:

Spencer Bliven

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	LinearColorInterpolator.InterpolationDirection

Constructor Summary

Constructors

Constructor	Description
LinearColorInterpolator()
LinearColorInterpolator(ColorSpace colorSpace)

Method Summary

Modifier and Type	Method	Description
Color	interpolate(Color a, Color b, float mixing)	Interpolates to a color between a and b
void	setColorSpace(ColorSpace colorSpace)
void	setColorSpace(ColorSpace colorSpace, LinearColorInterpolator.InterpolationDirection[] dir)	Sets the ColorSpace to use for interpolation.
void	setInterpolationDirection(int componentIndex, LinearColorInterpolator.InterpolationDirection dir)

Methods inherited from class java.lang.Object

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

Constructor Details

LinearColorInterpolator

public LinearColorInterpolator()

LinearColorInterpolator

public LinearColorInterpolator(ColorSpace colorSpace)

Method Details

interpolate

public Color interpolate(Color a,
 Color b,
 float mixing)

Interpolates to a color between a and b

Specified by:

interpolate in interface ColorInterpolator

Parameters:

a - First color

b - Second color

mixing - Mixing coefficient; the fraction of a in the result.

Returns:

The color between a and b

Throws:

IllegalArgumentException - if mixing is not between 0 and 1

See Also:

• ColorInterpolator.interpolate(java.awt.Color, java.awt.Color, float)

setColorSpace

public void setColorSpace(ColorSpace colorSpace,
 LinearColorInterpolator.InterpolationDirection[] dir)

Sets the ColorSpace to use for interpolation. The most common scheme for color spaces is to use linear components between 0 and 1 (for instance red,green,blue). For such a component, a linear interpolation between two colors is used. Sometimes a component may be in cylindrical coordinates. In this case, the component can be mapped in a number of ways. These are set by InterpolationDirections.

Parameters:

colorSpace - The color space for interpolation

dir - An array of size colorSpace.getNumComponents() giving the interpolation direction for each component.

setColorSpace

public void setColorSpace(ColorSpace colorSpace)

setInterpolationDirection

public void setInterpolationDirection(int componentIndex,
 LinearColorInterpolator.InterpolationDirection dir)