Point

Introduction

Point shape and methods, built-in methods of phaser.

• Author: Richard Davey

Usage

Create shape

var point = new Phaser.Geom.Point(x, y);

Clone shape

var point1 = Phaser.Geom.Point.Clone(point0);

Draw on graphics

// graphics.fillStyle(color, alpha);   // color: 0xRRGGBB
graphics.fillPointShape(point, size);

Set properties

• All properties

  point.setTo(x, y);
  

  or

  Phaser.Geom.Point.CopyFrom(source, dest);
  

• Position

  point.x = 0;
  point.y = 0;
  

• Round
  • Ceil : Apply Math.ceil() to each coordinate of the given Point

    var point = Phaser.Geom.Point.Ceil(point)
    

  • Floor : Apply Math.floor() to each coordinate of the given Point.

    var point = Phaser.Geom.Point.Floor(point)
    

Symmetry

• Invert : x = y, y = x

  var point = Phaser.Geom.Point.Invert(point);
  

• Negative : x = -x, y = -y

  var out = Phaser.Geom.Point.Negative(point);
  // var out = Phaser.Geom.Point.Negative(point, out);  // modify out
  

Get properties

• Position

  var x = point.x;
  var y = point.y;
  

• Type:

  var type = point.type; // 3
  

Equal

var isEqual = Phaser.Geom.Point.Equals(point0, point1);

x, y are equal.

Points

• Centroid : center-point over some points

  var out = Phaser.Geom.Point.GetCentroid(points);
  // var out = Phaser.Geom.Point.GetCentroid(points, out);  // modify out
  

• Calculates the Axis Aligned Bounding Box (or aabb) from an array of points (rectangle)

  var rect = Phaser.Geom.Point.GetRectangleFromPoints(points);
  // var rect = Phaser.Geom.Point.GetRectangleFromPoints(points, rect);  // modify rect
  

• Interpolate

  var out = Phaser.Geom.Point.Interpolate(pointA, pointB, t);  // out : point
  // var out = Phaser.Geom.Point.Interpolate(pointA, pointB, t, out);  // modify out
  

Intersection

• Point to line

  var result = Phaser.Geom.Intersects.PointToLine(point, line);
  // var result = Phaser.Geom.Intersects.PointToLine(point, line, lineThickness);
  

  var result = Phaser.Geom.Intersects.PointToLineSegment(point, line);
  

Point as Vector

Vector starting at (0,0)

• Magnitude : sqrt( (x * x) + (y * y) )

  var magnitude = Phaser.Geom.Point.GetMagnitude(point);
  

  or

  var magnitudeSq = Phaser.Geom.Point.GetMagnitudeSq(point);
  

• Project

  var out = Phaser.Geom.Point.Project(from, to);
  // var out = Phaser.Geom.Point.Project(from, to, out);  // modify out
  

  or

  var out = Phaser.Geom.Point.ProjectUnit(from, to);  // vector `from` and `to` are unit vector (length = 1)
  // var out = Phaser.Geom.Point.ProjectUnit(from, to, out);  // modify out