Package gov.nih.mipav.model.algorithms

Class ContourPlot.Utils

java.lang.Object

gov.nih.mipav.model.algorithms.ContourPlot.Utils

Enclosing class:

ContourPlot

public static class ContourPlot.Utils
extends java.lang.Object

Class containing utility methods

Author:

hageldave

Constructor Summary

Constructors

Constructor	Description
Utils()

Method Summary

Modifier and Type	Method	Description
static double	clamp(double lower, double v, double upper)	Clamps value between specified bounds
static float	clamp(float lower, float v, float upper)	Clamps value between specified bounds
static int	clamp(int lower, int v, int upper)	Clamps value between specified bounds
static <T extends java.awt.geom.Point2D> T	copy(T p)	Copies the specified Point2D (calls clone) and casts the copy to the class of the original.
static double	hypot(double x, double y)	Calculates sqrt(x*x + y*y) which is the hypotenuse length given catheti x and y.
static java.awt.image.ImageObserver	imageObserver(int flags)	Creates an ImageObserver that checks the for the specified infoflags.
static <T extends java.lang.Comparable<T>> boolean	isSorted(java.util.Iterator<T> iter)	Checks if specified iterator is sorted according to natural ordering.
static double	max3(double v0, double v1, double v2)	Returns the maximum of 3 values
static double	min3(double v0, double v1, double v2)	Returns the minimum of 3 values
static <T> java.util.stream.Stream<T>	parallelize(java.util.stream.Stream<T> stream, boolean parallel)	Syntactic sugar for conditional stream.parallel().
private static boolean	pointInTri(double px, double py, double x0, double y0, double x1, double y1, double x2, double y2)
static boolean	rectIntersectsOrIsContainedInTri(java.awt.geom.Rectangle2D rect, double x0, double y0, double x1, double y1, double x2, double y2)	tests intersection or containment of rectangle and triangle.
private static double	sign(double x1, double y1, double x2, double y2, double x3, double y3)
static <P extends java.awt.geom.Point2D> P	swapYAxis(P point, int height)	Swaps between GL and AWT coordinates, AWT coordinate system has its origin in the top left corner of a component and downwards pointing y axis, whereas GL has its origin in the bottom left corner of the viewport (at least in JPlotter) and upwards pointing y axis.

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

copy

public static <T extends java.awt.geom.Point2D> T copy(T p)

Copies the specified Point2D (calls clone) and casts the copy to the class of the original.

Type Parameters:

T - type of Point2D

Parameters:

p - point to copy

Returns:

the copied point

copy

public static <T extends java.awt.geom.RectangularShape> T copy(T r)

Copies the specified RectangularShape (calls clone) and casts the copy to the class of the original.

Type Parameters:

T - type of RectangularShape

Parameters:

r - rectangle to copy

Returns:

the copied rectangle

isSorted

public static <T extends java.lang.Comparable<T>> boolean isSorted(java.util.Iterator<T> iter)

Checks if specified iterator is sorted according to natural ordering.

Type Parameters:

T - element type that implements Comparable

Parameters:

iter - iterator

Returns:

true if sorted, false otherwise

parallelize

public static <T> java.util.stream.Stream<T> parallelize(java.util.stream.Stream<T> stream,
                                                         boolean parallel)

Syntactic sugar for conditional stream.parallel().

Type Parameters:

T - element type of stream

Parameters:

stream - to make parallel

parallel - whether to make parallel or not

Returns:

stream.parallel() if true

clamp

public static double clamp(double lower,
                           double v,
                           double upper)

Clamps value between specified bounds

Parameters:

lower - minimum value

v - value to clamp

upper - maximum value

Returns:

max(lower,min(upper,v))

clamp

public static float clamp(float lower,
                          float v,
                          float upper)

Clamps value between specified bounds

Parameters:

lower - minimum value

v - value to clamp

upper - maximum value

Returns:

max(lower,min(upper,v))

clamp

public static int clamp(int lower,
                        int v,
                        int upper)

Clamps value between specified bounds

Parameters:

lower - minimum value

v - value to clamp

upper - maximum value

Returns:

max(lower,min(upper,v))

min3

public static double min3(double v0,
                          double v1,
                          double v2)

Returns the minimum of 3 values

Parameters:

v0 - value

v1 - value

v2 - value

Returns:

minimum

max3

public static double max3(double v0,
                          double v1,
                          double v2)

Returns the maximum of 3 values

Parameters:

v0 - value

v1 - value

v2 - value

Returns:

maximum

rectIntersectsOrIsContainedInTri

public static boolean rectIntersectsOrIsContainedInTri(java.awt.geom.Rectangle2D rect,
                                                       double x0,
                                                       double y0,
                                                       double x1,
                                                       double y1,
                                                       double x2,
                                                       double y2)

tests intersection or containment of rectangle and triangle.

Parameters:

rect - rectangle to test

x0 - x coordinate of 0th triangle vertex

y0 - y coordinate of 0th triangle vertex

x1 - x coordinate of 1st triangle vertex

y1 - y coordinate of 1st triangle vertex

x2 - x coordinate of 2nd triangle vertex

y2 - y coordinate of 2nd triangle vertex

Returns:

true when intersecting

sign

private static double sign(double x1,
                           double y1,
                           double x2,
                           double y2,
                           double x3,
                           double y3)

pointInTri

private static boolean pointInTri(double px,
                                  double py,
                                  double x0,
                                  double y0,
                                  double x1,
                                  double y1,
                                  double x2,
                                  double y2)

imageObserver

public static java.awt.image.ImageObserver imageObserver(int flags)

Creates an ImageObserver that checks the for the specified infoflags. See ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int).

Parameters:

flags - infoflags to check

Returns:

a new ImageObserver

hypot

public static final double hypot(double x,
                                 double y)

Calculates sqrt(x*x + y*y) which is the hypotenuse length given catheti x and y.

Parameters:

x - a value

y - a value

Returns:

hypotenuse length

swapYAxis

public static <P extends java.awt.geom.Point2D> P swapYAxis(P point,
                                                            int height)

Swaps between GL and AWT coordinates, AWT coordinate system has its origin in the top left corner of a component and downwards pointing y axis, whereas GL has its origin in the bottom left corner of the viewport (at least in JPlotter) and upwards pointing y axis.

Type Parameters:

P - type of Point2D

Parameters:

point - to swap the y axis of

height - of the component or viewport

Returns:

point in coordinates of the other reference coordinate system.