Made developing a little more enjoyable

This commit adds playgrounds and a build:dev mode. Now you
can call npm run build:dev to make the linter warn you about
errors without breaking. Also, we now have playgrounds, where
you can use a built version of svg.js to run your own tests.

4 files changed, 207 insertions, 434 deletions

diff --git a/src/matrix.js b/src/matrix.js
index 48ed7a1..a7676da 100644
--- a/src/matrix.js
+++ b/src/matrix.js
@@ -1,4 +1,4 @@
-/* global abcdef, arrayToMatrix, deltaTransformPoint, parseMatrix */
+/* global abcdef, arrayToMatrix, parseMatrix, unitCircle, mag */
 
 SVG.Matrix = SVG.invent({
   // Initialize
@@ -23,159 +23,130 @@ SVG.Matrix = SVG.invent({
   },
 
   // Add methods
-, extend: {
+  extend: {
 
     // Convert an object of affine parameters into a matrix
     compose: function (o, cx, cy) {
-
       // Set the defaults
       var tx = o.translateX || 0
-        , ty = o.translateY || 0
-        , theta = o.theta || 0
-        , sx = o.scaleX || 1
-        , sy = o.scaleY || 1
-        , lam = o.shear || 0
-        , cx = cx || 0
-        , cy = cy || 0
+      var ty = o.translateY || 0
+      var theta = o.theta || 0
+      var sx = o.scaleX || 1
+      var sy = o.scaleY || 1
+      var lam = o.shear || 0
+      cx = cx || 0
+      cy = cy || 0
 
       // Calculate the trigonometric values
       var ct = Math.cos(theta * Math.PI / 180)
-        , st Math.sin(theta * Math.PI / 180)
+      var st = Math.sin(theta * Math.PI / 180)
 
       // Calculate the matrix components directly
       var a = sx * ct
-        , b = sx * st
-        , c = lam * sx * ct - sy * st
-        , d = lam * sx * st + sy * ct
-        , e = - sx * ct * (cx + cy * lam) + sy * st * cy + tx + cx
-        , f = - sx * st * (cx + cy * lam) - sy * ct * cy + ty + cy
+      var b = sx * st
+      var c = lam * sx * ct - sy * st
+      var d = lam * sx * st + sy * ct
+      var e = -sx * ct * (cx + cy * lam) + sy * st * cy + tx + cx
+      var f = -sx * st * (cx + cy * lam) - sy * ct * cy + ty + cy
 
       // Construct a new matrix and return it
       var matrix = new SVG.Matrix([a, b, c, d, e, f])
       return matrix
-    }
+    },
     // Decompose a matrix into the affine parameters needed to form it
-  , decompose: function (matrix, cx, cy) {
-
+    decompose: function (matrix, cx, cy) {
       // Get the paramaters of the current matrix
       var a = matrix.a
-        , b = matrix.b
-        , c = matrix.c
-        , d = matrix.d
-        , e = matrix.e
-        , f = matrix.f
+      var b = matrix.b
+      var c = matrix.c
+      var d = matrix.d
+      var e = matrix.e
+      var f = matrix.f
 
       // Project the first basis vector onto the unit circle
-      var circle = unitCircle (a, b)
-        , theta = circle.theta
-        , ct = circle.cos
-        , st = circle.sin
+      var circle = unitCircle(a, b)
+      var theta = circle.theta
+      var ct = circle.cos
+      var st = circle.sin
 
       // Work out the transformation parameters
       var signX = Math.sign(a * ct + b * st)
-        , sx = signX * mag (a, b)
-        , lam = (st * d + ct * c) / (ct * a + st * b)
-        , signY = Math.sign(- c * st + d * ct)
-        , sy = mag (lam * a - c, d - lam * b)
-        , tx = e - cx + cx * ct * sx + cy * (lam * ct * sx - st * sy)
-        , ty = f - cy + cx * st * sx + cy * (lam * st * sx + ct * sy)
+      var sx = signX * mag(a, b)
+      var lam = (st * d + ct * c) / (ct * a + st * b)
+      var sy = mag(lam * a - c, d - lam * b)
+      var tx = e - cx + cx * ct * sx + cy * (lam * ct * sx - st * sy)
+      var ty = f - cy + cx * st * sx + cy * (lam * st * sx + ct * sy)
 
       // Package and return the parameters
       return {
 
         // Bundle the affine parameters
-        translateX: tx
-      , translateY: ty
-      , theta: theta
-      , scaleX: sx
-      , scaleY: sy
-      , shear: lam
+        translateX: tx,
+        translateY: ty,
+        theta: theta,
+        scaleX: sx,
+        scaleY: sy,
+        shear: lam,
 
       // Bundle the matrix parameters
-      , a: this.a
-      , b: this.b
-      , c: this.c
-      , d: this.d
-      , e: this.e
-      , f: this.f
-
-      // Return the new origin point
-      , x: this.e
-      , y: this.f
-
-      // Store the matrix
-      , matrix: new SVG.Matrix(this)
-        // translation
-        x: this.e,
-        y: this.f,
-        transformedX: (this.e * Math.cos(skewX * Math.PI / 180) + this.f * Math.sin(skewX * Math.PI / 180)) / Math.sqrt(this.a * this.a + this.b * this.b),
-        transformedY: (this.f * Math.cos(skewX * Math.PI / 180) + this.e * Math.sin(-skewX * Math.PI / 180)) / Math.sqrt(this.c * this.c + this.d * this.d),
-        // skew
-        skewX: -skewX,
-        skewY: 180 / Math.PI * Math.atan2(py.y, py.x),
-        // scale
-        scaleX: Math.sqrt(this.a * this.a + this.b * this.b),
-        scaleY: Math.sqrt(this.c * this.c + this.d * this.d),
-        // rotation
-        rotation: skewX,
         a: this.a,
         b: this.b,
         c: this.c,
         d: this.d,
         e: this.e,
         f: this.f,
+
+      // Return the new origin point
+        x: this.e,
+        y: this.f,
         matrix: new SVG.Matrix(this)
->>>>>>> 3.0.0
       }
     },
     // Clone matrix
-  , form: function (o) {
-
-    // Get all of the parameters required to form the matrix
-    var flipX = o.flip && (o.flip == "x" || o.flip == "both") ? -1 : 1
-      , flipY = o.flip && (o.flip == "y" || o.flip == "both") ? -1 : 1
-      , kX = o.skew.length ? o.skew[0]
+    form: function (o) {
+      // Get all of the parameters required to form the matrix
+      var flipX = o.flip && (o.flip === 'x' || o.flip === 'both') ? -1 : 1
+      var flipY = o.flip && (o.flip === 'y' || o.flip === 'both') ? -1 : 1
+      var skewX = o.skew.length ? o.skew[0]
         : isFinite(o.skew) ? o.skew
         : isFinite(o.skewX) ? o.skewX
         : 0
-      , kY = o.skew.length ? o.skew[1]
+      var skewY = o.skew.length ? o.skew[1]
         : isFinite(o.skew) ? o.skew
         : isFinite(o.skewY) ? o.skewY
         : 0
-      , skewX = o.scale.length ? o.scale[0] * flipX
+      var sx = o.scale.length ? o.scale[0] * flipX
         : isFinite(o.scale) ? o.scale * flipX
         : isFinite(o.scaleX) ? o.scaleX * flipX
         : flipX
-      , skewY = o.scale.length ? o.scale[1] * flipY
+      var sy = o.scale.length ? o.scale[1] * flipY
         : isFinite(o.scale) ? o.scale * flipY
         : isFinite(o.scaleY) ? o.scaleY * flipY
         : flipY
-      , kx = Math.tan(SVG.utils.radians(skewX))
-      , ky = Math.tan(SVG.utils.radians(skewY))
-      , lam = o.shear || 0
-      , theta = SVG.utils.radians(o.rotate || 0)
-      , st = Math.sin(theta)
-      , ct = Math.cos(theta)
-      , ox = o.origin.length ? o.origin[0] : o.ox || 0
-      , oy = o.origin.length ? o.origin[1] : o.oy || 0
-      , px = o.position.length ? o.position[0] : o.px || ox
-      , py = o.position.length ? o.position[1] : o.py || oy
-      , tx = o.translate.length ? o.translate[0] : o.tx || 0
-      , ty = o.translate.length ? o.translate[1] : o.ty || 0
+      var kx = Math.tan(SVG.utils.radians(skewX))
+      var ky = Math.tan(SVG.utils.radians(skewY))
+      var lam = o.shear || 0
+      var theta = SVG.utils.radians(o.rotate || 0)
+      var st = Math.sin(theta)
+      var ct = Math.cos(theta)
+      var ox = o.origin.length ? o.origin[0] : o.ox || 0
+      var oy = o.origin.length ? o.origin[1] : o.oy || 0
+      var px = o.position.length ? o.position[0] : o.px || ox
+      var py = o.position.length ? o.position[1] : o.py || oy
+      var tx = o.translate.length ? o.translate[0] : o.tx || 0
+      var ty = o.translate.length ? o.translate[1] : o.ty || 0
 
     // Form the matrix parameters... aka. welcome to wonderland! (used wolfram)
-    var a = ct*sx + ky*st*sy
-      , b = ct*ky*sy - st*sx
-      , c = ct*kx*sx + st*sy + lam*(ct*sx+ky*st*sy)
-      , d = -kx*st*sx + ct*sy + lam*(-st*sx + ct*ky*sy)
-      , e = px + tx + cx*(ct*sx+ky*st*sy) + cy*(ct*kx*sx+st*sy+lam*(ct*sx+ky*st*sy))
-      , f = py + ty + cx*(-st*sx + ct*ky*sy) + cy*(-kx*st*sx + ct*sy + lam*(-st*sx + ct*ky*sy))
-      , result = new Matrix(a, b, c, d, e, f)
-    return result
-  }
-  , clone: function() {
+      var a = ct * sx + ky * st * sy
+      var b = ct * ky * sy - st * sx
+      var c = ct * kx * sx + st * sy + lam * (ct * sx + ky * st * sy)
+      var d = -kx * st * sx + ct * sy + lam * (-st * sx + ct * ky * sy)
+      var e = px + tx + ox * (ct * sx + ky * st * sy) + oy * (ct * kx * sx + st * sy + lam * (ct * sx + ky * st * sy))
+      var f = py + ty + ox * (-st * sx + ct * ky * sy) + oy * (-kx * st * sx + ct * sy + lam * (-st * sx + ct * ky * sy))
+      var result = new SVG.Matrix(a, b, c, d, e, f)
+      return result
+    },
     clone: function () {
->>>>>>> 3.0.0
       return new SVG.Matrix(this)
     },
     // Morph one matrix into another
@@ -211,15 +182,15 @@ SVG.Matrix = SVG.invent({
       return new SVG.Matrix(this.native().inverse())
     },
     // Translate matrix
-  , translate: function(x, y) {
-    var translation = new SVG.Matrix(this.native().translate(x || 0, y || 0))
-      , matrix = this.multiply(translation)
+    translate: function (x, y) {
+      var translation = new SVG.Matrix(this.native().translate(x || 0, y || 0))
+      var matrix = this.multiply(translation)
       return matrix
-    }
+    },
     // Scale matrix
-  , scale: function(x, y, cx, cy) {
+    scale: function (x, y, cx, cy) {
       // Support uniform scaling
-      if (arguments.length == 1) {
+      if (arguments.length === 1) {
         y = x
       } else if (arguments.length === 3) {
         cy = cx
@@ -229,22 +200,21 @@ SVG.Matrix = SVG.invent({
 
       // Rotate the current matrix
       var scale = new SVG.Matrix(x, 0, 0, y, 0, 0)
-        , centered = this.around(cx, cy, rotation)
-        , matrix = this.multiply(centered)
-      return scale
-    }
+      var centered = this.around(cx, cy, scale)
+      var matrix = this.multiply(centered)
+      return matrix
+    },
     // Rotate matrix
-  , rotate: function(r, cx, cy) {
-
+    rotate: function (r, cx, cy) {
       // Convert degrees to radians
       r = SVG.utils.radians(r)
 
       // Construct the rotation matrix
       var rotation = new SVG.Matrix(Math.cos(r), Math.sin(r), -Math.sin(r), Math.cos(r), 0, 0)
-        , centered = this.around(cx, cy, rotation)
-        , matrix = this.multiply(centered)
+      var centered = this.around(cx, cy, rotation)
+      var matrix = this.multiply(centered)
       return matrix
-    }
+    },
     // Flip matrix on x or y, at a given offset
     flip: function (a, o) {
       return a === 'x' ? this.scale(-1, 1, o, 0)
@@ -252,13 +222,13 @@ SVG.Matrix = SVG.invent({
         : this.scale(-1, -1, a, o != null ? o : a)
     },
     // Skew
-  , shear: function(a, cx, cy) {
-    var shear = new SVG.Matrix(1, a, 0, 1, 0, 0)
-      , centered = this.around(cx, cy, shear)
-      , matrix = this.multiply(centered)
-    return matrix
-  }
-  , skew: function(x, y, cx, cy) {
+    shear: function (a, cx, cy) {
+      var shear = new SVG.Matrix(1, a, 0, 1, 0, 0)
+      var centered = this.around(cx, cy, shear)
+      var matrix = this.multiply(centered)
+      return matrix
+    },
+    skew: function (x, y, cx, cy) {
       // support uniformal skew
       if (arguments.length === 1) {
         y = x
@@ -274,10 +244,10 @@ SVG.Matrix = SVG.invent({
 
       // Construct the matrix
       var skew = new SVG.Matrix(1, Math.tan(y), Math.tan(x), 1, 0, 0)
-        , centered = this.around(cx, cy, skew)
-        , matrix = this.multiply(centered)
+      var centered = this.around(cx, cy, skew)
+      var matrix = this.multiply(centered)
       return matrix
-    }
+    },
     // SkewX
     skewX: function (x, cx, cy) {
       return this.skew(x, 0, cx, cy)
diff --git a/src/sugar.js b/src/sugar.js
index 7c555da..e82f4bb 100644
--- a/src/sugar.js
+++ b/src/sugar.js
@@ -35,17 +35,17 @@ var sugar = {
 
 SVG.extend([SVG.Element, SVG.FX], {
   // Map rotation to transform
-, rotate: function(angle, cx, cy) {
+  rotate: function (angle, cx, cy) {
     var matrix = new SVG.Matrix().rotate(angle, cx, cy)
-
-    return this.transform({ rotation: d, cx: cx, cy: cy })
+    return this.matrix(matrix, true)
   },
   // Map skew to transform
-, skew: function(x, y, cx, cy) {
-    return arguments.length == 1  || arguments.length == 3 ?
-      this.transform({ skew: x, cx: y, cy: cx }) :
-      this.transform({ skewX: x, skewY: y, cx: cx, cy: cy })
-  }
+  skew: function (x, y, cx, cy) {
+    var matrix = arguments.length === 1 || arguments.length === 3
+      ? new SVG.Matrix().skew(x, x, cx, cy)
+      : new SVG.Matrix().skew(x, y, cx, cy)
+    return this.matrix(matrix, true)
+  },
   // Map scale to transform
   scale: function (x, y, cx, cy) {
     return arguments.length === 1 || arguments.length === 3
@@ -60,7 +60,7 @@ SVG.extend([SVG.Element, SVG.FX], {
   flip: function (a, o) {
     o = typeof a === 'number' ? a : o
     return this.transform({ flip: a || 'both', offset: o })
-  }
+  },
   // Opacity
   opacity: function (value) {
     return this.attr('opacity', value)
diff --git a/src/transform.js b/src/transform.js
index 4076301..625a5ab 100644
--- a/src/transform.js
+++ b/src/transform.js
@@ -1,37 +1,72 @@
-/* global ensureCentre, capitalize, arrayToMatrix */
+/* global arrayToMatrix */
 
 SVG.extend(SVG.Element, {
+  // Reset all transformations
+  untransform: function () {
+    return this.attr('transform', null)
+  },
 
-  // Add transformations
-  transform: function (o) {
+  // merge the whole transformation chain into one matrix and returns it
+  matrixify: function () {
+    var matrix = (this.attr('transform') || '')
+      // split transformations
+      .split(SVG.regex.transforms).slice(0, -1).map(function (str) {
+        // generate key => value pairs
+        var kv = str.trim().split('(')
+        return [kv[0], kv[1].split(SVG.regex.delimiter).map(function (str) { return parseFloat(str) })]
+      })
+      // merge every transformation into one matrix
+      .reduce(function (matrix, transform) {
+        if (transform[0] === 'matrix') return matrix.multiply(arrayToMatrix(transform[1]))
+        return matrix[transform[0]].apply(matrix, transform[1])
+      }, new SVG.Matrix())
 
-    /**
-     * EXTRACTING PARAMETERS
-     */
+    return matrix
+  },
 
+  // add an element to another parent without changing the visual representation on the screen
+  toParent: function (parent) {
+    if (this === parent) return this
+    var ctm = this.screenCTM()
+    var pCtm = parent.screenCTM().inverse()
+
+    this.addTo(parent).untransform().transform(pCtm.multiply(ctm))
+
+    return this
+  },
+
+  // same as above with parent equals root-svg
+  toDoc: function () {
+    return this.toParent(this.doc())
+  }
+})
+
+SVG.extend(SVG.Element, {
+
+  // Add transformations
+  transform: function (o) {
     // Act as a getter if no object was passed
     if (typeof o !== 'object') {
-      matrix = new SVG.Matrix(this).extract()
+      var matrix = new SVG.Matrix(this).decompose()
       return typeof o === 'string' ? matrix[o] : matrix
     }
 
     // Allow the user to define the origin with a string
-    if (typeof o.origin === "string") {
-
+    if (typeof o.origin === 'string') {
       // Get the bounding box and string to use in our calculations
       var string = o.origin.toLowerCase().trim()
-        , bbox = this.bbox()
-        , x = bbox.x
-        , y = bbox.y
-        , width = bbox.width
-        , height = bbox.height
+      var bbox = this.bbox()
+      var x = bbox.x
+      var y = bbox.y
+      var width = bbox.width
+      var height = bbox.height
 
       // Set the bounds eg : "bottom-left", "Top right", "middle" etc...
-      o.ox = string.includes("left") ? x
-        : string.includes("right") ? x + width
+      o.ox = string.includes('left') ? x
+        : string.includes('right') ? x + width
         : x + width / 2
-      o.oy = string.includes("top") ? y
-        : string.includes("bottom") ? y + height
+      o.oy = string.includes('top') ? y
+        : string.includes('bottom') ? y + height
         : y + height / 2
 
       // Make sure we only pass ox and oy
@@ -40,71 +75,14 @@ SVG.extend(SVG.Element, {
 
     // Get the resulting matrix and apply it to the element
     var result = new SVG.Matrix().form(o)
-      , matrixString = result.toString()
-    // get current matrix
-    matrix = new SVG.Matrix(target)
-
-    // ensure relative flag
-    relative = !!relative || !!o.relative
-
-    // act on matrix
-    if (o.a != null) {
-      matrix = relative
-        ? matrix.multiply(new SVG.Matrix(o))
-        : new SVG.Matrix(o)
-
-    // act on rotation
-    } else if (o.rotation != null) {
-      // ensure centre point
-      ensureCentre(o, target)
-
-      // apply transformation
-      matrix = relative
-        ? matrix.rotate(o.rotation, o.cx, o.cy)
-        : matrix.rotate(o.rotation - matrix.extract().rotation, o.cx, o.cy)
-
-    // act on scale
-    } else if (o.scale != null || o.scaleX != null || o.scaleY != null) {
-      // ensure centre point
-      ensureCentre(o, target)
-
-      // ensure scale values on both axes
-      o.scaleX = o.scale != null ? o.scale : o.scaleX != null ? o.scaleX : 1
-      o.scaleY = o.scale != null ? o.scale : o.scaleY != null ? o.scaleY : 1
-
-      if (!relative) {
-        // absolute; multiply inversed values
-        var e = matrix.extract()
-        o.scaleX = o.scaleX * 1 / e.scaleX
-        o.scaleY = o.scaleY * 1 / e.scaleY
-      }
-
-      matrix = matrix.scale(o.scaleX, o.scaleY, o.cx, o.cy)
-
-    // act on skew
-    } else if (o.skew != null || o.skewX != null || o.skewY != null) {
-      // ensure centre point
-      ensureCentre(o, target)
-
-      // ensure skew values on both axes
-      o.skewX = o.skew != null ? o.skew : o.skewX != null ? o.skewX : 0
-      o.skewY = o.skew != null ? o.skew : o.skewY != null ? o.skewY : 0
-
-      if (!relative) {
-        // absolute; reset skew values
-        var el = matrix.extract()
-        matrix = matrix.multiply(new SVG.Matrix().skew(el.skewX, el.skewY, el.cx, el.cy).inverse())
-      }
->>>>>>> 3.0.0
+    var matrixString = result.toString()
 
     // Apply the result
-    return this.attr('transform', matrix)
-    }
-  }
+    return this.attr('transform', matrixString)
+  },
 
   // Map matrix to transform
-, matrix: function(m, relative) {
-
+  matrix: function (m, relative) {
     // Construct a matrix from the first parameter
     var matrix = new SVG.Matrix(m)
 
@@ -120,10 +98,7 @@ SVG.extend(SVG.Element, {
 })
 
 SVG.extend(SVG.FX, {
-  transform: function(o, relative) {
-
-
-
+  transform: function (o, relative) {
 
   //   // get target in case of the fx module, otherwise reference this
   //   var target = this.target()
@@ -203,90 +178,51 @@ SVG.extend(SVG.FX, {
   //
   //   return this._callStart()
   // }
-      // ensure scale values on both axes
-      o.scaleX = o.scale != null ? o.scale : o.scaleX != null ? o.scaleX : 1
-      o.scaleY = o.scale != null ? o.scale : o.scaleY != null ? o.scaleY : 1
-
-      matrix = new SVG.Scale(o.scaleX, o.scaleY, o.cx, o.cy)
-
-    // act on skew
-    } else if (o.skewX != null || o.skewY != null) {
-      // ensure centre point
-      ensureCentre(o, target)
-
-      // ensure skew values on both axes
-      o.skewX = o.skewX != null ? o.skewX : 0
-      o.skewY = o.skewY != null ? o.skewY : 0
-
-      matrix = new SVG.Skew(o.skewX, o.skewY, o.cx, o.cy)
-
-    // act on flip
-    } else if (o.flip) {
-      if (o.flip === 'x' || o.flip === 'y') {
-        o.offset = o.offset == null ? target.bbox()['c' + o.flip] : o.offset
-      } else {
-        if (o.offset == null) {
-          bbox = target.bbox()
-          o.flip = bbox.cx
-          o.offset = bbox.cy
-        } else {
-          o.flip = o.offset
-        }
-      }
-
-      matrix = new SVG.Matrix().flip(o.flip, o.offset)
-
-    // act on translate
-    } else if (o.x != null || o.y != null) {
-      matrix = new SVG.Translate(o.x, o.y)
-    }
-
-    if (!matrix) return this
-
-    matrix.relative = relative
-
-    this.last().transforms.push(matrix)
-
-    return this._callStart()
-  }
->>>>>>> 3.0.0
-})
-
-SVG.extend(SVG.Element, {
-  // Reset all transformations
-  untransform: function () {
-    return this.attr('transform', null)
-  },
-  // merge the whole transformation chain into one matrix and returns it
-  matrixify: function () {
-    var matrix = (this.attr('transform') || '')
-      // split transformations
-      .split(SVG.regex.transforms).slice(0, -1).map(function (str) {
-        // generate key => value pairs
-        var kv = str.trim().split('(')
-        return [kv[0], kv[1].split(SVG.regex.delimiter).map(function (str) { return parseFloat(str) })]
-      })
-      // merge every transformation into one matrix
-      .reduce(function (matrix, transform) {
-        if (transform[0] === 'matrix') return matrix.multiply(arrayToMatrix(transform[1]))
-        return matrix[transform[0]].apply(matrix, transform[1])
-      }, new SVG.Matrix())
-
-    return matrix
-  },
-  // add an element to another parent without changing the visual representation on the screen
-  toParent: function (parent) {
-    if (this === parent) return this
-    var ctm = this.screenCTM()
-    var pCtm = parent.screenCTM().inverse()
-
-    this.addTo(parent).untransform().transform(pCtm.multiply(ctm))
-
-    return this
-  },
-  // same as above with parent equals root-svg
-  toDoc: function () {
-    return this.toParent(this.doc())
+  //     // ensure scale values on both axes
+  //     o.scaleX = o.scale != null ? o.scale : o.scaleX != null ? o.scaleX : 1
+  //     o.scaleY = o.scale != null ? o.scale : o.scaleY != null ? o.scaleY : 1
+  //
+  //     matrix = new SVG.Scale(o.scaleX, o.scaleY, o.cx, o.cy)
+  //
+  //   // act on skew
+  //   } else if (o.skewX != null || o.skewY != null) {
+  //     // ensure centre point
+  //     ensureCentre(o, target)
+  //
+  //     // ensure skew values on both axes
+  //     o.skewX = o.skewX != null ? o.skewX : 0
+  //     o.skewY = o.skewY != null ? o.skewY : 0
+  //
+  //     matrix = new SVG.Skew(o.skewX, o.skewY, o.cx, o.cy)
+  //
+  //   // act on flip
+  //   } else if (o.flip) {
+  //     if (o.flip === 'x' || o.flip === 'y') {
+  //       o.offset = o.offset == null ? target.bbox()['c' + o.flip] : o.offset
+  //     } else {
+  //       if (o.offset == null) {
+  //         bbox = target.bbox()
+  //         o.flip = bbox.cx
+  //         o.offset = bbox.cy
+  //       } else {
+  //         o.flip = o.offset
+  //       }
+  //     }
+  //
+  //     matrix = new SVG.Matrix().flip(o.flip, o.offset)
+  //
+  //   // act on translate
+  //   } else if (o.x != null || o.y != null) {
+  //     matrix = new SVG.Translate(o.x, o.y)
+  //   }
+  //
+  //   if (!matrix) return this
+  //
+  //   matrix.relative = relative
+  //
+  //   this.last().transforms.push(matrix)
+  //
+  //   return this._callStart()
   }
 })
 
@@ -432,137 +368,3 @@ SVG.extend(SVG.Element, {
 //   }
 //
 // })
-SVG.Transformation = SVG.invent({
-
-  create: function (source, inversed) {
-    if (arguments.length > 1 && typeof inversed !== 'boolean') {
-      return this.constructor.bind(this)([].slice.call(arguments))
-    }
-
-    var i, len
-    if (Array.isArray(source)) {
-      for (i = 0, len = this.arguments.length; i < len; ++i) {
-        this[this.arguments[i]] = source[i]
-      }
-    } else if (typeof source === 'object') {
-      for (i = 0, len = this.arguments.length; i < len; ++i) {
-        this[this.arguments[i]] = source[this.arguments[i]]
-      }
-    }
-
-    this.inversed = false
-
-    if (inversed === true) {
-      this.inversed = true
-    }
-  },
-
-  extend: {
-
-    arguments: [],
-    method: '',
-
-    at: function (pos) {
-      var params = []
-
-      for (var i = 0, len = this.arguments.length; i < len; ++i) {
-        params.push(this[this.arguments[i]])
-      }
-
-      var m = this._undo || new SVG.Matrix()
-
-      m = new SVG.Matrix().morph(SVG.Matrix.prototype[this.method].apply(m, params)).at(pos)
-
-      return this.inversed ? m.inverse() : m
-    },
-
-    undo: function (o) {
-      for (var i = 0, len = this.arguments.length; i < len; ++i) {
-        o[this.arguments[i]] = typeof this[this.arguments[i]] === 'undefined' ? 0 : o[this.arguments[i]]
-      }
-
-      // The method SVG.Matrix.extract which was used before calling this
-      // method to obtain a value for the parameter o doesn't return a cx and
-      // a cy so we use the ones that were provided to this object at its creation
-      o.cx = this.cx
-      o.cy = this.cy
-
-      this._undo = new SVG[capitalize(this.method)](o, true).at(1)
-      return this
-    }
-
-  }
-
-})
-
-SVG.Translate = SVG.invent({
-
-  parent: SVG.Matrix,
-  inherit: SVG.Transformation,
-
-  create: function (source, inversed) {
-    this.constructor.apply(this, [].slice.call(arguments))
-  },
-
-  extend: {
-    arguments: ['transformedX', 'transformedY'],
-    method: 'translate'
-  }
-
-})
-
-SVG.Rotate = SVG.invent({
-
-  parent: SVG.Matrix,
-  inherit: SVG.Transformation,
-
-  create: function (source, inversed) {
-    this.constructor.apply(this, [].slice.call(arguments))
-  },
-
-  extend: {
-    arguments: ['rotation', 'cx', 'cy'],
-    method: 'rotate',
-    at: function (pos) {
-      var m = new SVG.Matrix().rotate(new SVG.Number().morph(this.rotation - (this._undo ? this._undo.rotation : 0)).at(pos), this.cx, this.cy)
-      return this.inversed ? m.inverse() : m
-    },
-    undo: function (o) {
-      this._undo = o
-      return this
-    }
-  }
-
-})
-
-SVG.Scale = SVG.invent({
-
-  parent: SVG.Matrix,
-  inherit: SVG.Transformation,
-
-  create: function (source, inversed) {
-    this.constructor.apply(this, [].slice.call(arguments))
-  },
-
-  extend: {
-    arguments: ['scaleX', 'scaleY', 'cx', 'cy'],
-    method: 'scale'
-  }
-
-})
-
-SVG.Skew = SVG.invent({
-
-  parent: SVG.Matrix,
-  inherit: SVG.Transformation,
-
-  create: function (source, inversed) {
-    this.constructor.apply(this, [].slice.call(arguments))
-  },
-
-  extend: {
-    arguments: ['skewX', 'skewY', 'cx', 'cy'],
-    method: 'skew'
-  }
-})
->>>>>>> 3.0.0
diff --git a/src/utilities.js b/src/utilities.js
index 5ebe808..01b8ba5 100644
--- a/src/utilities.js
+++ b/src/utilities.js
@@ -1,3 +1,4 @@
+
 SVG.utils = {
   // Map function
   map: function (array, block) {