X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fappletgui%2FRotatableCanvas.java;h=9fa7491cfa4e9daf6314bbbca93bd4425e7a20b2;hb=8c2ee75d86492f03e4c01404855f9ad2dd305719;hp=25754cd939ecffb9ff89b95f078b4aefd0a854b0;hpb=74e53831a61cb5c3d342fa302cd2cd8d16eacf7b;p=jalview.git

diff --git a/src/jalview/appletgui/RotatableCanvas.java b/src/jalview/appletgui/RotatableCanvas.java
index 25754cd..9fa7491 100755
--- a/src/jalview/appletgui/RotatableCanvas.java
+++ b/src/jalview/appletgui/RotatableCanvas.java
@@ -32,8 +32,6 @@ public class RotatableCanvas
     extends Panel implements MouseListener,
     MouseMotionListener,
     KeyListener
-//RubberbandListener,
-//SequenceSelectionListener
 {
   RotatableMatrix idmat = new RotatableMatrix(3, 3);
   RotatableMatrix objmat = new RotatableMatrix(3, 3);
@@ -82,17 +80,19 @@ public class RotatableCanvas
   float scalefactor = 1;
 
   AlignViewport av;
-//  Controller    controller;
 
+  public RotatableCanvas(AlignViewport av)
+  {
+    this.av = av;
+  }
 
-  public RotatableCanvas(AlignViewport av,
-                         Vector points, int npoint)
+  public void setPoints(Vector points, int npoint)
   {
     this.points = points;
     this.npoint = npoint;
     this.av = av;
     PaintRefresher.Register(this, av.alignment);
-//
+
     prefsize = getPreferredSize();
     orig = new float[npoint][3];
 
@@ -287,29 +287,38 @@ public class RotatableCanvas
 
   public void paint(Graphics g)
   {
-    //Only create the image at the beginning -
-    if ( (img == null) || (prefsize.width != getSize().width) ||
-        (prefsize.height != getSize().height))
+    if (points == null)
+    {
+      g.setFont(new Font("Verdana", Font.PLAIN, 18));
+      g.drawString("Calculating PCA....", 20, getSize().height / 2);
+    }
+    else
     {
-      prefsize.width = getSize().width;
-      prefsize.height = getSize().height;
 
-      scale = findScale();
+      //Only create the image at the beginning -
+      if ( (img == null) || (prefsize.width != getSize().width) ||
+          (prefsize.height != getSize().height))
+      {
+        prefsize.width = getSize().width;
+        prefsize.height = getSize().height;
 
-      //      System.out.println("New scale = " + scale);
-      img = createImage(getSize().width, getSize().height);
-      ig = img.getGraphics();
+        scale = findScale();
 
-    }
+        //      System.out.println("New scale = " + scale);
+        img = createImage(getSize().width, getSize().height);
+        ig = img.getGraphics();
 
-    drawBackground(ig, Color.black);
-    drawScene(ig);
-    if (drawAxes == true)
-    {
-      drawAxes(ig);
-    }
+      }
 
-    g.drawImage(img, 0, 0, this);
+      drawBackground(ig, Color.black);
+      drawScene(ig);
+      if (drawAxes == true)
+      {
+        drawAxes(ig);
+      }
+
+      g.drawImage(img, 0, 0, this);
+    }
   }
 
   public void drawAxes(Graphics g)