[fix] Fix rounding issue when converting ELK to GMF

Before this fix, "10.83333333333334" from ELK side is considered as "10"
on GMF side, instead of "11".

Change-Id: I255c421b943636bb9d00cdd3aa9847ea47a185fc

plugins/org.eclipse.sirius.diagram.elk/src/org/eclipse/sirius/diagram/elk/GmfLayoutCommand.java

@@ -170,13 +170,13 @@ protected CommandResult doExecuteWithResult(final IProgressMonitor monitor, fina
         for (ShapeLayoutData shapeLayout : shapeLayouts) {
             // set new location of the element
             if (shapeLayout.location != null) {
-                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getLocation_X(), Integer.valueOf(shapeLayout.location.x));
-                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getLocation_Y(), Integer.valueOf(shapeLayout.location.y));
+                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getLocation_X(), Math.toIntExact(Math.round(shapeLayout.location.preciseX())));
+                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getLocation_Y(), Math.toIntExact(Math.round(shapeLayout.location.preciseY())));
             }
             // set new size of the element
             if (shapeLayout.size != null) {
-                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getSize_Width(), Integer.valueOf(shapeLayout.size.width));
-                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getSize_Height(), Integer.valueOf(shapeLayout.size.height));
+                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getSize_Width(), Math.toIntExact(Math.round(shapeLayout.size.preciseWidth())));
+                ViewUtil.setStructuralFeatureValue(shapeLayout.view, NotationPackage.eINSTANCE.getSize_Height(), Math.toIntExact(Math.round(shapeLayout.size.preciseHeight())));
             }
         }
         shapeLayouts.clear();