Angle

Introduction

Convert angle value, built-in methods of phaser.

  • Author: Richard Davey

Usage

Degree <-> Radians

  • Degree to radians
    var rad = Phaser.Math.DegToRad(deg);
    
  • Radians to degree
    var deg = Phaser.Math.RadToDeg(rad);  // deg : -180 ~ 180
    

Wrap

  • Wrap angle (radians) in the range of -PI to PI
    var rad = Phaser.Math.Angle.Wrap(angle);
    
  • Wrap angle (radians) in the range of 0 to 2*PI
    var rad = Phaser.Math.Angle.Normalize(angle);
    
  • Wrap angle (degrees) in the range of -180 to 180
    var deg = Phaser.Math.Angle.WrapDegrees(angle);
    

Angle between points

  • Angle from (0,0) to vector (x2 - x1 , y2 - y1)
    var rad = Phaser.Math.Angle.Between(x1, y1, x2, y2);
    
    var rad = Phaser.Math.Angle.BetweenPoints(point1, point2);
    

Angle between angles

  • Shortest angle (degrees) between 2 angles
    var deg = Phaser.Math.Angle.ShortestBetween(angle1, angle2)
    
    • angle1, angle2 : Angle in degrees in the range of -180 to 180
    • deg : Shortest angle in degrees
      • deg > 0 : Counter-ClockWise rotation
      • deg < 0 : ClockWise rotation

Rotate around position

  • Rotate a point around x and y by the given angle.
    var out = Phaser.Math.RotateAround(point, x, y, angle);
    
  • Rotate a point around x and y by the given angle and distance.
    var out = Phaser.Math.RotateAroundDistance(point, x, y, angle, distance);
    

Random angle

  • Returns a random angle in the range [-pi, pi].
    var angle = Phaser.Math.Angle.Random();
    
  • Returns a random angle in the range [-180, 180].
    var angle = Phaser.Math.Angle.RandomDegrees();