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Posted to commits@pdfbox.apache.org by ti...@apache.org on 2023/05/01 14:27:31 UTC

svn commit: r1909538 - /pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java

Author: tilman
Date: Mon May  1 14:27:31 2023
New Revision: 1909538

URL: http://svn.apache.org/viewvc?rev=1909538&view=rev
Log:
PDFBOX-5593: avoid div by zero, as suggested by Etienne Gautier; Closes #162

Modified:
    pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java

Modified: pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java?rev=1909538&r1=1909537&r2=1909538&view=diff
==============================================================================
--- pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java (original)
+++ pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/common/function/PDFunction.java Mon May  1 14:27:31 2023
@@ -348,6 +348,11 @@ public abstract class PDFunction impleme
      */
     protected float interpolate(float x, float xRangeMin, float xRangeMax, float yRangeMin, float yRangeMax) 
     {
+        if (xRangeMax == xRangeMin)
+        {
+            // PDFBOX-5593 / PR #162
+            return yRangeMin;
+        }
         return yRangeMin + ((x - xRangeMin) * (yRangeMax - yRangeMin)/(xRangeMax - xRangeMin));
     }