STYLE: Consistency updates

src/functionObjects/graphics/runTimePostProcessing/geometryBase.C

@@ -99,7 +99,7 @@ Foam::functionObjects::runTimePostPro::geometryBase::geometryBase
     name_(dict.dictName()),
     visible_(readBool(dict.lookup("visible"))),
     renderMode_(rmGouraud),
-    opacity_(NULL),
+    opacity_(nullptr),
     colours_(colours)
 {
     if (dict.found("renderMode"))

src/functionObjects/graphics/runTimePostProcessing/pathline.C

@@ -141,7 +141,7 @@ Foam::functionObjects::runTimePostPro::pathline::pathline
         representationTypeNames.read(dict.lookup("representation"))
     ),
     tubeRadius_(0.0),
-    lineColour_(NULL)
+    lineColour_(nullptr)
 {
     if (dict.found("lineColour"))
     {

src/functionObjects/graphics/runTimePostProcessing/pointData.C

@@ -109,7 +109,7 @@ Foam::functionObjects::runTimePostPro::pointData::pointData
         representationTypeNames.read(dict.lookup("representation"))
     ),
     maxGlyphLength_(readScalar(dict.lookup("maxGlyphLength"))),
-    pointColour_(NULL)
+    pointColour_(nullptr)
 {
     if (dict.found("pointColour"))
     {

src/functionObjects/graphics/runTimePostProcessing/scene.C

@@ -324,10 +324,10 @@ Foam::functionObjects::runTimePostPro::scene::scene
     name_(name),
     colours_(),
     mode_(mtStatic),
-    cameraPosition_(NULL),
-    cameraFocalPoint_(NULL),
-    cameraUp_(NULL),
-    cameraViewAngle_(NULL),
+    cameraPosition_(nullptr),
+    cameraFocalPoint_(nullptr),
+    cameraUp_(nullptr),
+    cameraViewAngle_(nullptr),
     clipBox_(),
     parallelProjection_(true),
     nFrameTotal_(1),

src/functionObjects/graphics/runTimePostProcessing/surface.C

@@ -160,8 +160,8 @@ Foam::functionObjects::runTimePostPro::surface::surface
         representationTypeNames.read(dict.lookup("representation"))
     ),
     featureEdges_(false),
-    surfaceColour_(NULL),
-    edgeColour_(NULL),
+    surfaceColour_(nullptr),
+    edgeColour_(nullptr),
     surfaceActor_(),
     edgeActor_(),
     maxGlyphLength_(0.0)

src/functionObjects/graphics/runTimePostProcessing/text.C

@@ -47,7 +47,7 @@ Foam::functionObjects::runTimePostPro::text::text
     string_(dict.lookup("string")),
     position_(dict.lookup("position")),
     size_(readScalar(dict.lookup("size"))),
-    colour_(NULL),
+    colour_(nullptr),
     bold_(readBool(dict.lookup("bold"))),
     timeStamp_(dict.lookupOrDefault<bool>("timeStamp", false))
 {