Merge ff3c04f into 58d3c2c

HarryGogonis · Jul 14, 2017 · 192018e · 192018e
2 parents 58d3c2c + ff3c04f
commit 192018e
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diff --git a/src/index.js b/src/index.js
@@ -43,6 +43,11 @@ class Matrix extends Map {
     }
   }
 
+  static fromCTM(ctm) {
+    const {a, b, c, d, e, f} = ctm
+    return new Matrix(a,b,c,d,e,f)
+  }
+
   /**
    * Multiplies current matrix with new matrix values.
    * @param {number} a2 - scale x

diff --git a/src/index.spec.js b/src/index.spec.js
@@ -169,3 +169,18 @@ describe('#applyToPoint', () => {
     expect(new Matrix().applyToPoint(x, y)).toEqual({x, y})
   })
 })
+
+describe('fromCTM', () => {
+  it('should return a new Matrix', () => {
+    const actual = Matrix.fromCTM({
+      a: 1,
+      b: 2,
+      c: 3,
+      d: 4,
+      e: 5,
+      f: 6
+    })
+    const expected = new Matrix(1, 2, 3, 4, 5, 6)
+    expect(actual).toEqual(expected)
+  })
+})