Package org.jzy3d.maths

Class Angle3d

java.lang.Object

org.jzy3d.maths.Angle3d

public class Angle3d
extends Object

An Angle3d stores three 3d points, considering the angle is on the second one. An instance may return angle(), cos() and sin().

Field Summary

Fields

Modifier and Type	Field	Description
static final float	DEGREE_45
static final double	DEGREE_45_D
static final float	DEGREE_90
static final double	DEGREE_90_D
protected float	x1
protected float	x2
protected float	x3
protected float	y1
protected float	y2
protected float	y3
protected float	z1
protected float	z2
protected float	z3

Constructor Summary

Constructors

Constructor	Description
Angle3d(float x1, float y1, float z1, float x2, float y2, float z2, float x3, float y3, float z3)	Create an angle, described by three points.
Angle3d(Coord3d p1, Coord3d p2, Coord3d p3)	Create an angle, described by three coordinates.

Method Summary

Modifier and Type	Method	Description
float	angle()	Computes the angle at vertex p2 between rays p1,p2 and p3,p2.
double	angleD()	Computes the angle at vertex p2 between rays p1,p2 and p3,p2.
static double	angleSum(List<Coord3d> coords)	Compute the sum of all angles in the input coordinate list.
static double	angleSumFromPoints(List<Point> coords)
static boolean	angleSumFromPointsOfNonIntersectingPolygon(List<Point> coords)
static double	angleSumOfNonIntersectingPolygon(int n)	Returns the expected sum of all angles of a polygon given its number of points.
static double	angleSumOfNonIntersectingPolygonRad(int n)
float	cos()	Computes cosinus of the angle
float	sin()	Computes the sinus of the angle, by creating a fourth point on an orthogonal direction.

Methods inherited from class java.lang.Object

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

Field Details

DEGREE_90_D

public static final double DEGREE_90_D

See Also:

• Constant Field Values

DEGREE_90

public static final float DEGREE_90

See Also:

• Constant Field Values

DEGREE_45_D

public static final double DEGREE_45_D

See Also:

• Constant Field Values

DEGREE_45

public static final float DEGREE_45

See Also:

• Constant Field Values

x1

protected float x1

x2

protected float x2

x3

protected float x3

y1

protected float y1

y2

protected float y2

y3

protected float y3

z1

protected float z1

z2

protected float z2

z3

protected float z3

Constructor Details

Angle3d

public Angle3d(float x1,
 float y1,
 float z1,
 float x2,
 float y2,
 float z2,
 float x3,
 float y3,
 float z3)

Create an angle, described by three points. The angle is supposed to be on p2

Angle3d

public Angle3d(Coord3d p1,
 Coord3d p2,
 Coord3d p3)

Create an angle, described by three coordinates. The angle is supposed to be on p2

Method Details

sin

public float sin()

Computes the sinus of the angle, by creating a fourth point on an orthogonal direction.

cos

public float cos()

Computes cosinus of the angle

angle

public float angle()

Computes the angle at vertex p2 between rays p1,p2 and p3,p2. Returns 0 to PI radians.

angleD

public double angleD()

Computes the angle at vertex p2 between rays p1,p2 and p3,p2. Returns 0 to PI radians.

angleSum

public static double angleSum(List<Coord3d> coords)

Compute the sum of all angles in the input coordinate list. If input contains point A, B, C, this method will compute angles ABC, BCA, CAB. An error is thrown if there are less than 3 points.

angleSumFromPoints

public static double angleSumFromPoints(List<Point> coords)

angleSumOfNonIntersectingPolygon

public static double angleSumOfNonIntersectingPolygon(int n)

Returns the expected sum of all angles of a polygon given its number of points. The polygon is supposed to not have any edge crossing another edge.

Parameters:

n -

Returns:

angleSumOfNonIntersectingPolygonRad

public static double angleSumOfNonIntersectingPolygonRad(int n)

angleSumFromPointsOfNonIntersectingPolygon

public static boolean angleSumFromPointsOfNonIntersectingPolygon(List<Point> coords)