9 files changed, 59 insertions, 30 deletions

diff --git a/src/model/density_legend_geometry.c b/src/model/density_legend_geometry.c
index ab3e46c..7e30de8 100644
--- a/src/model/density_legend_geometry.c
+++ b/src/model/density_legend_geometry.c
@@ -2,7 +2,6 @@
 #include "../view/exp004state0.h"
 #include "../controller/exp004reshape.h"
 #include <GL/glut.h>
-#include <stdio.h>
 
 #define S exp004state0
 
@@ -15,13 +14,6 @@ density_legend_geometry (void)
              DEFAULT_COLOR_A);
 
   /*
-   * This value should be a percentage of the world height so that it
-   * remains a fixed number of pixels tall when the window is resized
-   * or zoomed.
-   */
-  double legend_height = 0.5;
-
-  /*
    * Calculate the bounding box for the legend.
    */
 
@@ -33,20 +25,30 @@ density_legend_geometry (void)
   const double *left;
   const double *right;
   const double *top;
+  const double *bottom;
 
   if (S.zoom.active)
     {
       left = &S.zoom.coords[0];
       right = &S.zoom.coords[1];
+      bottom = &S.zoom.coords[2];
       top = &S.zoom.coords[3];
     }
   else
     {
       left = &S.ortho.min_x;
-      top = &S.ortho.max_y;
       right = &S.ortho.max_x;
+      bottom = &S.ortho.min_y;
+      top = &S.ortho.max_y;
     }
 
+  /*
+   * This value should be a percentage of the world height so that it
+   * remains a fixed number of pixels tall when the window is resized
+   * or zoomed.
+   */
+  double legend_height = (*top - *bottom) / S.viewport.h * 10.0;
+
   a[0] = *left;
   a[1] = *top;
   b[0] = *right;