Added unbiased option to plotable elements

4 files changed, 24 insertions, 12 deletions

diff --git a/src/container.js b/src/container.js
index 63822e4..08a52c8 100644
--- a/src/container.js
+++ b/src/container.js
@@ -90,16 +90,16 @@ SVG.extend(SVG.Container, {
     return this.put(new SVG.Line().plot(x1, y1, x2, y2))
   }
   // Create a wrapped polyline element
-, polyline: function(points) {
-    return this.put(new SVG.Polyline).plot(points)
+, polyline: function(points, unbiased) {
+    return this.put(new SVG.Polyline(unbiased)).plot(points)
   }
   // Create a wrapped polygon element
-, polygon: function(points) {
-    return this.put(new SVG.Polygon).plot(points)
+, polygon: function(points, unbiased) {
+    return this.put(new SVG.Polygon(unbiased)).plot(points)
   }
   // Create a wrapped path element
-, path: function(data) {
-    return this.put(new SVG.Path).plot(data)
+, path: function(data, unbiased) {
+    return this.put(new SVG.Path(unbiased)).plot(data)
   }
   // Create image element, load image and set its size
 , image: function(source, width, height) {
diff --git a/src/path.js b/src/path.js
index ab5221a..b328d92 100644
--- a/src/path.js
+++ b/src/path.js
@@ -1,5 +1,7 @@
-SVG.Path = function() {
+SVG.Path = function(unbiased) {
   this.constructor.call(this, SVG.create('path'))
+  
+  this.unbiased = unbiased
 }
 
 // Inherit from SVG.Shape
diff --git a/src/plotable.js b/src/plotable.js
index 023d769..b4efe77 100644
--- a/src/plotable.js
+++ b/src/plotable.js
@@ -25,10 +25,16 @@ SVG.extend(SVG.Polyline, SVG.Polygon, SVG.Path, {
     /* native plot */
     this._plot(data)
     
-    /* get and store the actual offset of the element */
+    /* store offset */
     this._offset = this.transform({ scaleX: 1, scaleY: 1 }).bbox()
-    this._offset.x -= this.trans.x
-    this._offset.y -= this.trans.y
+    
+    /* get and store the actual offset of the element */
+    if (this.unbiased) {
+      this._offset.x = this._offset.y = 0
+    } else {
+      this._offset.x -= this.trans.x
+      this._offset.y -= this.trans.y
+    }
     
     return this.transform({ scaleX: x, scaleY: y })
   }
diff --git a/src/poly.js b/src/poly.js
index 16a1cae..5c458f0 100644
--- a/src/poly.js
+++ b/src/poly.js
@@ -1,12 +1,16 @@
-SVG.Polyline = function() {
+SVG.Polyline = function(unbiased) {
   this.constructor.call(this, SVG.create('polyline'))
+  
+  this.unbiased = unbiased
 }
 
 // Inherit from SVG.Shape
 SVG.Polyline.prototype = new SVG.Shape
 
-SVG.Polygon = function() {
+SVG.Polygon = function(unbiased) {
   this.constructor.call(this, SVG.create('polygon'))
+  
+  this.unbiased = unbiased
 }
 
 // Inherit from SVG.Shape