ENH: add input surface scaling (issue #514)

- surfaceFeatureExtract
  * dictionary "scale" entry

- triSurface
- triSurfaceLoader
  * optional scaleFactor on reading

- surfaceAdd
- surfaceBooleanFeatures
- surfaceClean
- surfaceCoarsen
  * scale option

- surfaceTransformPoints, transformPoints
  * scale option as scalar or vector quantity

applications/utilities/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C

@@ -1517,6 +1517,12 @@ int main(int argc, char *argv[])
     argList::validArgs.append("surfaceFile1");
     argList::validArgs.append("surfaceFile2");
 
+    argList::addOption
+    (
+        "scale",
+        "factor",
+        "Geometry scaling factor (both surfaces)"
+    );
     argList::addBoolOption
     (
         "surf1Baffle",
@@ -1587,6 +1593,10 @@ int main(int argc, char *argv[])
     }
 
 
+    // Scale factor for both surfaces:
+    const scalar scaleFactor
+        = args.optionLookupOrDefault<scalar>("scale", -1);
+
     const word surf1Name(args[2]);
     Info<< "Reading surface " << surf1Name << endl;
     triSurfaceMesh surf1
@@ -1599,6 +1609,11 @@ int main(int argc, char *argv[])
             runTime
         )
     );
+    if (scaleFactor > 0)
+    {
+        Info<< "Scaling  : " << scaleFactor << nl;
+        surf1.scalePoints(scaleFactor);
+    }
 
     Info<< surf1Name << " statistics:" << endl;
     surf1.writeStats(Info);
@@ -1616,6 +1631,11 @@ int main(int argc, char *argv[])
             runTime
         )
     );
+    if (scaleFactor > 0)
+    {
+        Info<< "Scaling  : " << scaleFactor << nl;
+        surf2.scalePoints(scaleFactor);
+    }
 
     Info<< surf2Name << " statistics:" << endl;
     surf2.writeStats(Info);
@@ -1627,7 +1647,7 @@ int main(int argc, char *argv[])
     edgeIntersections edgeCuts1;
     edgeIntersections edgeCuts2;
 
-    bool invertedSpace = args.optionFound("invertedSpace");
+    const bool invertedSpace = args.optionFound("invertedSpace");
 
     if (invertedSpace && validActions[action] == booleanSurface::DIFFERENCE)
     {
@@ -1736,9 +1756,7 @@ int main(int argc, char *argv[])
     const extendedFeatureEdgeMesh& feMesh = feMeshPtr();
 
     feMesh.writeStats(Info);
-
     feMesh.write();
-
     feMesh.writeObj(feMesh.path()/sFeatFileName);
 
     {