Added the Colormap component.

* The Colormap component is a simple rect with a texture mapped
  that displays a ColorScale with a fixed number of samples. This
  number of samples is exported as a member const, which is used
  on other components (such as VoronoiSplat).
* The texture mapping is reflecting the colormap lookup used in
  VoronoiSplat.
* The ColorScale class now has a method for sampling the color
  scale and outputs the samples to iterator-style objects,
  providing easy intergration with existing code.

1 files changed, 2 insertions, 0 deletions

diff --git a/scatterplot.h b/scatterplot.h
index 656ed09..f577819 100644
--- a/scatterplot.h
+++ b/scatterplot.h
@@ -25,6 +25,8 @@ public:
     void setAutoScale(bool autoScale);
     Q_INVOKABLE bool saveToFile(const QUrl &url);
 
+    static const int PADDING = 10;
+
 signals:
     void xyChanged(const arma::mat &XY) const;
     void xyInteractivelyChanged(const arma::mat &XY) const;