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Fixed scaleX and scaleY to handle negative scales and added rotation fix

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This commit is contained in:
Richard Davey 2019-08-02 01:50:02 +01:00
parent 7b8632c099
commit c1767e404f
1 changed files with 59 additions and 8 deletions
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67
src/gameobjects/components/TransformMatrix.js
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@ -238,10 +238,9 @@ var TransformMatrix = new Class({
},
/**
* The rotation of the Matrix, normalized to be within the Phaser right-handed
* clockwise rotation space. Value is in radians.
* The rotation of the Matrix. Value is in radians.
*
* @name Phaser.GameObjects.Components.TransformMatrix#rotationNormalized
* @name Phaser.GameObjects.Components.TransformMatrix#rotation
* @type {number}
* @readonly
* @since 3.4.0
@ -250,10 +249,24 @@ var TransformMatrix = new Class({
get: function ()
{
// Previous version:
// return Math.acos(this.a / this.scaleX) * (Math.atan(-this.c / this.a) < 0 ? -1 : 1);
return Math.acos(this.a / this.scaleX) * (Math.atan(-this.c / this.a) < 0 ? -1 : 1);
}
// Normalized version:
},
/**
* The rotation of the Matrix, normalized to be within the Phaser right-handed
* clockwise rotation space. Value is in radians.
*
* @name Phaser.GameObjects.Components.TransformMatrix#rotationNormalized
* @type {number}
* @readonly
* @since 3.19.0
*/
rotationNormalized: {
get: function ()
{
var matrix = this.matrix;
var a = matrix[0];
@ -293,7 +306,26 @@ var TransformMatrix = new Class({
get: function ()
{
return Math.sqrt((this.a * this.a) + (this.c * this.c));
var matrix = this.matrix;
var a = matrix[0];
var b = matrix[1];
var c = matrix[2];
var d = matrix[3];
var determ = a * d - b * c;
if (a || b)
{
return determ / Math.sqrt(a * a + b * b);
}
else if (c || d)
{
return Math.sqrt(c * c + d * d);
}
else
{
return 0;
}
}
},
@ -310,7 +342,26 @@ var TransformMatrix = new Class({
get: function ()
{
return Math.sqrt((this.b * this.b) + (this.d * this.d));
var matrix = this.matrix;
var a = matrix[0];
var b = matrix[1];
var c = matrix[2];
var d = matrix[3];
var determ = a * d - b * c;
if (a || b)
{
return Math.sqrt(a * a + b * b);
}
else if (c || d)
{
return determ / Math.sqrt(c * c + d * d);
}
else
{
return 0;
}
}
},