Fix - use histogram min/max for Z scale range in lego plot

Author: linev

scripts/JSRoot3DPainter.js

@@ -734,9 +734,16 @@
 
       this.Create3DScene();
 
-      this.zmin = this.options.Logz ? this.gmin0bin * 0.3 : this.gminbin;
+      var logz = this.options.Logz;
+
+      this.zmin = logz ? this.gmin0bin * 0.3 : this.gminbin;
       this.zmax = this.gmaxbin * 1.05; // not very nice
 
+      if (this.histo.fMinimum !== -1111) this.zmin = this.histo.fMinimum;
+      if (this.histo.fMaximum !== -1111) this.zmax = this.histo.fMaximum;
+
+      if (logz && (this.zmin<=0)) this.zmin = this.zmax * 1e-5;
+
       this.DrawXYZ();
 
       this.Draw3DBins();