From 3371209ab87530181c2a556d72fcbadcf9d1f618 Mon Sep 17 00:00:00 2001
From: Steve Cockram <stevejohncockram@gmail.com>
Date: Tue, 28 Feb 2012 13:30:52 +0000
Subject: [PATCH] Added option to draw straight lines

---
 example.html  |  3 ++-
 morris.coffee | 18 +++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/example.html b/example.html
index f66fbad..5d211b6 100644
--- a/example.html
+++ b/example.html
@@ -82,7 +82,8 @@
         data: month_data,
         xkey: 'period',
         ykeys: ['licensed', 'sorned'],
-        labels: ['Licensed', 'SORN']
+        labels: ['Licensed', 'SORN'],
+        lineDrawer: 'straight'
       });
     });
   </script>
diff --git a/morris.coffee b/morris.coffee
index c7db91d..22bce15 100644
--- a/morris.coffee
+++ b/morris.coffee
@@ -50,6 +50,7 @@ class Morris.Line
     hoverOpacity: 0.95
     hoverLabelColor: '#444'
     hoverFontSize: 12
+    lineDrawer: 'spline'
 
   # Do any necessary pre-processing for a new dataset
   #
@@ -141,7 +142,10 @@ class Morris.Line
     for i in [seriesCoords.length-1..0]
       coords = seriesCoords[i]
       if coords.length > 1
-        path = @createPath coords, @options.marginTop, left, @options.marginTop + height, left + width
+        if @options.lineDrawer == 'straight'
+          path = @createStraightPath coords, @options.marginTop, left, @options.marginTop + height, left + width
+        else
+          path = @createPath coords, @options.marginTop, left, @options.marginTop + height, left + width
         @r.path(path)
           .attr('stroke', @options.lineColors[i])
           .attr('stroke-width', @options.lineWidth)
@@ -255,6 +259,18 @@ class Morris.Line
         path += "C#{x1},#{y1},#{x2},#{y2},#{c.x},#{c.y}"
     return path
 
+  # creates a straight path for a data series
+  #
+  createStraightPath: (coords, top, left, bottom, right) ->
+    path = ""
+    for i in [0..coords.length-1]
+      c = coords[i]
+      if i is 0
+        path += "M#{c.x},#{c.y}"
+      else
+        path += "L#{c.x},#{c.y}"
+    return path
+
   # calculate a gradient at each point for a series of points
   #
   gradients: (coords) ->