fix: incongruent behavior as small scales when setting `transform.sca…

…le = v` and `transform.scale.setTo(x, y)`

CHANGELOG.md

@@ -17,9 +17,12 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 - Added `GraphicsComponent.bounds` which will report the world bounds of the graphic if applicable!
+- Added `ex.Vector.EQUALS_EPSILON` to configure the `ex.Vector.equals(v)` threshold
 
 ### Fixed
 
+- Fixed incongruent behavior as small scales when setting `transform.scale = v` and `transform.scale.setTo(x, y)`
+- Fixed `ex.coroutine` TypeScript type to include yielding `undefined`
 - Fixed issue where Firefox on Linux would throw an error when using custom Materials due to unused attributes caused by glsl compiler optimization. 
 - Fixed issue where start transition did not work properly if deferred
 - Fixed issue where transitions did not cover the whole screen if camera was zoomed

src/engine/Math/transform.ts

@@ -115,7 +115,7 @@ export class Transform {
 
   private _scale: Vector = vec(1, 1);
   set scale(v: Vector) {
-    if (!v.equals(this._scale)) {
+    if (v.x !== this._scale.x || v.y !== this._scale.y) {
       this._scale.x = v.x;
       this._scale.y = v.y;
       this.flagDirty();

src/engine/Math/vector.ts

@@ -6,6 +6,10 @@ import { clamp } from './util';
  */
 
 export class Vector implements Clonable<Vector> {
+  /**
+   * Get or set the vector equals epsilon, by default 0.001 meaning vectors within that tolerance on x or y will be considered equal.
+   */
+  public static EQUALS_EPSILON = .001;
   /**
    * A (0, 0) vector
    */
@@ -152,7 +156,7 @@ export class Vector implements Clonable<Vector> {
    * @param vector The other point to compare to
    * @param tolerance Amount of euclidean distance off we are willing to tolerate
    */
-  public equals(vector: Vector, tolerance: number = 0.001): boolean {
+  public equals(vector: Vector, tolerance: number = Vector.EQUALS_EPSILON): boolean {
     return Math.abs(this.x - vector.x) <= tolerance && Math.abs(this.y - vector.y) <= tolerance;
   }