Merge branch 'feature/JAL-3127_seqidChainshading' into merge/JAL-3127

[jalview.git] / src / jalview / schemes / AnnotationColourGradient.java

diff --git a/src/jalview/schemes/AnnotationColourGradient.java b/src/jalview/schemes/AnnotationColourGradient.java
index 2790626..75a07b9 100755 (executable)
--- a/src/jalview/schemes/AnnotationColourGradient.java
+++ b/src/jalview/schemes/AnnotationColourGradient.java
@@ -320,9 +320,9 @@ public class AnnotationColourGradient extends FollowerColourScheme
     if (annotationThreshold != null)
     {
       if ((aboveAnnotationThreshold == ABOVE_THRESHOLD
-              && aj.value < annotationThreshold.value)
+              && aj.value <= annotationThreshold.value)
               || (aboveAnnotationThreshold == BELOW_THRESHOLD
-                      && aj.value > annotationThreshold.value))
+                      && aj.value >= annotationThreshold.value))
       {
         return Color.white;
       }
@@ -415,14 +415,17 @@ public class AnnotationColourGradient extends FollowerColourScheme
             && aboveAnnotationThreshold == ABOVE_THRESHOLD
             && value >= ann.threshold.value)
     {
-      range = (value - ann.threshold.value)
+      range = ann.graphMax == ann.threshold.value ? 1f
+              : (value - ann.threshold.value)
               / (ann.graphMax - ann.threshold.value);
     }
     else if (thresholdIsMinMax && ann.threshold != null
             && aboveAnnotationThreshold == BELOW_THRESHOLD
             && value <= ann.threshold.value)
     {
-      range = (value - ann.graphMin) / (ann.threshold.value - ann.graphMin);
+      range = ann.graphMin == ann.threshold.value ? 0f
+              : (value - ann.graphMin)
+                      / (ann.threshold.value - ann.graphMin);
     }
     else
     {
@@ -476,7 +479,7 @@ public class AnnotationColourGradient extends FollowerColourScheme
   @Override
   public String getSchemeName()
   {
-    return "Annotation";
+    return ANNOTATION_COLOUR;
   }
 
   @Override