com.xuexiang.xui.widget.textview.badge

Class MathUtils

java.lang.Object

com.xuexiang.xui.widget.textview.badge.MathUtils

public class MathUtils
extends java.lang.Object

Since:

2018/12/28 上午9:10

Author:

xuexiang

Field Summary

Fields

Modifier and Type	Field and Description
static double	CIRCLE_RADIAN

Method Summary

Modifier and Type	Method and Description
static void	getInnerTangentPoints(android.graphics.PointF circleCenter, float radius, java.lang.Double slopeLine, java.util.List<android.graphics.PointF> points) this formula is designed by mabeijianxi website : http://blog.csdn.net/mabeijianxi/article/details/50560361
static float	getPointDistance(android.graphics.PointF p1, android.graphics.PointF p2)
static int	getQuadrant(android.graphics.PointF p, android.graphics.PointF center)
static double	getTanRadian(double atan, int quadrant)
static double	radianToAngle(double radian)

Methods inherited from class java.lang.Object

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

Field Detail

CIRCLE_RADIAN

public static final double CIRCLE_RADIAN

See Also:

Constant Field Values

Method Detail

getTanRadian

public static double getTanRadian(double atan,
                                  int quadrant)

radianToAngle

public static double radianToAngle(double radian)

getQuadrant

public static int getQuadrant(android.graphics.PointF p,
                              android.graphics.PointF center)

getPointDistance

public static float getPointDistance(android.graphics.PointF p1,
                                     android.graphics.PointF p2)

getInnerTangentPoints

public static void getInnerTangentPoints(android.graphics.PointF circleCenter,
                                         float radius,
                                         java.lang.Double slopeLine,
                                         java.util.List<android.graphics.PointF> points)

this formula is designed by mabeijianxi website : http://blog.csdn.net/mabeijianxi/article/details/50560361

Parameters:

circleCenter - The circle center point.

radius - The circle radius.

slopeLine - The slope of line which cross the pMiddle.