tipgame.util
Class PathBlur

java.lang.Object
  tipgame.util.PathBlur

public class PathBlur
extends java.lang.Object

Draws in reduced colors.

Author:

Jam Jenkins

Constructor Summary

PathBlur()

Method Summary

private static java.awt.Color	blend(java.awt.Color from, java.awt.Color to, double distance) blends two color as a linear combination
private static double[]	getExponentialValues(int num, double base) gets exponentially increasing values from 0 to 1
private static double[]	getLinearValues(int num) gets linearly increasing values from 0 to 1
static void	paintBlur(java.awt.Graphics2D graphics, java.awt.Shape[] history, double[] values) paints shapes at a given intensity
private static void	paintBlur(java.awt.Graphics2D graphics, java.awt.Shape current, java.awt.geom.Point2D.Double movement, double[] values) fills a blur from where the shape used to be to its current location by translating -movement and drawing successively less transparent shapes while translating back to the original location.
static void	paintExponentialBlur(java.awt.Graphics2D graphics, java.awt.Shape[] history, double base) paints shapes in an exponentially decreasing intensity
static void	paintExponentialBlur(java.awt.Graphics2D graphics, java.awt.Shape[] history, int steps, double base) paints shapes at exponentially decreasing intensity
static void	paintExponentialBlur(java.awt.Graphics2D graphics, java.awt.Shape current, java.awt.geom.Point2D.Double movement, int steps, double base) paints shapes in an exponentially decreasing intensity
static void	paintLinearBlur(java.awt.Graphics2D graphics, java.awt.Shape[] history) paints shapes in an linearly decreasing intensity
static void	paintLinearBlur(java.awt.Graphics2D graphics, java.awt.Shape[] history, int steps) paints shapes at linearly decreasing intensity
static void	paintLinearBlur(java.awt.Graphics2D graphics, java.awt.Shape current, java.awt.geom.Point2D.Double movement, int steps) paints shapes in a linearly decreasing intensity

Methods inherited from class java.lang.Object

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

Constructor Detail

PathBlur

public PathBlur()

Method Detail

paintBlur

private static void paintBlur(java.awt.Graphics2D graphics,
                              java.awt.Shape current,
                              java.awt.geom.Point2D.Double movement,
                              double[] values)

fills a blur from where the shape used to be to its current location by translating -movement and drawing successively less transparent shapes while translating back to the original location. This method only draws in a single color.

Parameters:

graphics - the graphics used for drawing

current - the current location of the shape

movement - the destination of the shape

values - the intensity values for drawing the shape

paintLinearBlur

public static void paintLinearBlur(java.awt.Graphics2D graphics,
                                   java.awt.Shape current,
                                   java.awt.geom.Point2D.Double movement,
                                   int steps)

paints shapes in a linearly decreasing intensity

Parameters:

graphics - the graphics used for drawing

current - the current location of the shape

movement - the destination of the shape

steps - how many steps to draw

paintExponentialBlur

public static void paintExponentialBlur(java.awt.Graphics2D graphics,
                                        java.awt.Shape current,
                                        java.awt.geom.Point2D.Double movement,
                                        int steps,
                                        double base)

paints shapes in an exponentially decreasing intensity

Parameters:

graphics - the graphics used for drawing

current - the current location of the shape

movement - the destination of the shape

steps - how many steps to draw

base - the base to exponentiate, should be less than 1

getLinearValues

private static double[] getLinearValues(int num)

gets linearly increasing values from 0 to 1

Parameters:

num - the steps for increasing

Returns:

an array of values from 0 to 1

getExponentialValues

private static double[] getExponentialValues(int num,
                                             double base)

gets exponentially increasing values from 0 to 1

Parameters:

num - the steps for increasing

base - the base for exponentiating

Returns:

an array of values from 0 to 1

paintExponentialBlur

public static void paintExponentialBlur(java.awt.Graphics2D graphics,
                                        java.awt.Shape[] history,
                                        double base)

paints shapes in an exponentially decreasing intensity

Parameters:

graphics - the graphics used for drawing

history - the shapes to draw

base - the base to exponentiate, should be less than 1

paintLinearBlur

public static void paintLinearBlur(java.awt.Graphics2D graphics,
                                   java.awt.Shape[] history)

paints shapes in an linearly decreasing intensity

Parameters:

graphics - the graphics used for drawing

history - the shapes to draw

base - the base to exponentiate, should be less than 1

paintBlur

public static void paintBlur(java.awt.Graphics2D graphics,
                             java.awt.Shape[] history,
                             double[] values)

paints shapes at a given intensity

Parameters:

graphics - the graphics used for drawing

history - the shapes to draw

values - the intensities corresponding to the shapes

paintLinearBlur

public static void paintLinearBlur(java.awt.Graphics2D graphics,
                                   java.awt.Shape[] history,
                                   int steps)

paints shapes at linearly decreasing intensity

Parameters:

graphics - the graphics used for drawing

history - the shapes to draw

steps - the number of steps for changing the intensity

paintExponentialBlur

public static void paintExponentialBlur(java.awt.Graphics2D graphics,
                                        java.awt.Shape[] history,
                                        int steps,
                                        double base)

paints shapes at exponentially decreasing intensity

Parameters:

graphics - the graphics used for drawing

history - the shapes to draw

steps - the number of steps for changing the intensity

base - the base to exponentiate for the densities

blend

private static java.awt.Color blend(java.awt.Color from,
                                    java.awt.Color to,
                                    double distance)

blends two color as a linear combination

Parameters:

from - the first color

to - the second color

distance - the amount of the second color between zero and one. One is all the second color and zero is none of the second color

Returns:

the linearly blended color