round utility functions

add mRoundF to return nearest floating value to stepsize

Engine/source/gui/worldEditor/gizmo.cpp

@@ -1896,17 +1896,7 @@ Point3F Gizmo::_snapPoint( const Point3F &pnt ) const
 
 F32 Gizmo::_snapFloat( const F32 &val, const F32 &snap ) const
 {
-   if ( snap == 0.0f )
+   return mRoundF(val, snap);
-      return val;
-
-   F32 a = mFmod( val, snap );
-
-   F32 temp = val;
-
-   if ( mFabs(a) > (snap / 2) )
-      val < 0.0f ? temp -= snap : temp += snap;
-
-   return(temp - a);
 }
 
 GizmoAlignment Gizmo::_filteredAlignment()

Engine/source/gui/worldEditor/worldEditorSelection.cpp

@@ -320,17 +320,7 @@ void WorldEditorSelection::offset( const Point3F& offset, F32 gridSnap )
 
 F32 WorldEditorSelection::_snapFloat(const F32 &val, const F32 &snap) const
 {
-   if (snap == 0.0f)
+   return mRoundF(val, snap);
-      return val;
-
-   F32 a = mFmod(val, snap);
-
-   F32 temp = val;
-
-   if (mFabs(a) > (snap / 2))
-      val < 0.0f ? temp -= snap : temp += snap;
-
-   return(temp - a);
 }
 
 

Engine/source/math/mConsoleFunctions.cpp

@@ -103,6 +103,14 @@ DefineEngineFunction( mRound, S32, ( F32 v  ),,
     "@ingroup Math" )  
 {
    return mRound(v);
+
+DefineEngineFunction(mRoundF, F32, (F32 v, F32 step), ,
+   "Round v to the nth decimal place or the nearest whole number by default."
+   "@param v Value to roundn"
+   "@return The rounded value as a F32."
+   "@ingroup Math")
+{
+   return mRoundF(v, step);
 }
 
 DefineEngineFunction(mRoundDelta, S32, (F32 v, S32 d), (0.0, 1),

Engine/source/math/mMathFn.h

@@ -219,6 +219,21 @@ inline F32 mRound(const F32 val, const S32 n)
    return mFloor((val*place)+0.5)/place;  
 }
 
+inline F32 mRoundF(const F32 val, const F32 step)
+{
+   if (step == 0.0f)
+      return val;
+
+   F32 a = mFmod(val, step);
+
+   F32 temp = val;
+
+   if (mFabs(a) > (step / 2))
+      val < 0.0f ? temp -= step : temp += step;
+
+   return(temp - a);
+}
+
 inline S32 mAbs(const S32 val)
 {
    return abs(val);