Skew transformations added2

test/skew.js

@@ -0,0 +1,37 @@
+var assert = chai.assert;
+
+describe("X axis skew", function() {
+
+  it("should work with relative path", function() {
+    assert.equal(new SVGPathData(
+      'm100 75l-50 -45l0 90z'
+    ).skewX(Math.PI/2).encode(),
+      'm175.29136163904155 75l-95.17481698342493 -45l90.34963396684985 90z');
+  });
+
+  it("should work with absolute path", function() {
+    assert.equal(new SVGPathData(
+      'M 100,75 50,30 50,120 z'
+    ).skewX(Math.PI/2).encode(),
+      'M175.29136163904155 75L80.11654465561662 30L170.46617862246646 120z');
+  });
+
+});
+
+describe("Y axis skew", function() {
+
+  it("should work with relative path", function() {
+    assert.equal(new SVGPathData(
+      'm100 75l-50 -45l0 90z'
+    ).skewY(Math.PI/2).encode(),
+      'm100 175.3884821853887l-50 -95.19424109269436l0 90z');
+  });
+
+  it("should work with absolute path", function() {
+    assert.equal(new SVGPathData(
+      'M 100,75 50,30 50,120 z'
+    ).skewY(Math.PI/2).encode(),
+      'M100 175.3884821853887L50 80.19424109269436L50 170.19424109269437z');
+  });
+
+});