diff --git a/example/example.xcodeproj/project.pbxproj b/example/example.xcodeproj/project.pbxproj
index 4a258bf..386cfe5 100644
--- a/example/example.xcodeproj/project.pbxproj
+++ b/example/example.xcodeproj/project.pbxproj
@@ -10,6 +10,7 @@
 		391717EF1B08FFDA00F9A484 /* SetApplicationStateCmd.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 391717ED1B08FFDA00F9A484 /* SetApplicationStateCmd.cpp */; };
 		391717F31B0A8A7300F9A484 /* MvAllTexCoordsCmd.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 391717F11B0A8A7300F9A484 /* MvAllTexCoordsCmd.cpp */; };
 		391717F71B0BCBB500F9A484 /* MvTexCoordCmd.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 391717F51B0BCBB500F9A484 /* MvTexCoordCmd.cpp */; };
+		39203D7D1C591A7900D6225F /* GridWarpSurface.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 39203D7C1C591A7900D6225F /* GridWarpSurface.cpp */; };
 		3926483B192224DA0008A7F5 /* ofxXmlSettings.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 39264839192224DA0008A7F5 /* ofxXmlSettings.cpp */; };
 		39264841192224F90008A7F5 /* tinyxml.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3926483D192224F90008A7F5 /* tinyxml.cpp */; };
 		39264842192224F90008A7F5 /* tinyxmlerror.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 3926483F192224F90008A7F5 /* tinyxmlerror.cpp */; };
@@ -142,6 +143,8 @@
 		391717F21B0A8A7300F9A484 /* MvAllTexCoordsCmd.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = MvAllTexCoordsCmd.h; path = Commands/MvAllTexCoordsCmd.h; sourceTree = "<group>"; };
 		391717F51B0BCBB500F9A484 /* MvTexCoordCmd.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = MvTexCoordCmd.cpp; path = Commands/MvTexCoordCmd.cpp; sourceTree = "<group>"; };
 		391717F61B0BCBB500F9A484 /* MvTexCoordCmd.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = MvTexCoordCmd.h; path = Commands/MvTexCoordCmd.h; sourceTree = "<group>"; };
+		39203D7B1C591A7900D6225F /* GridWarpSurface.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GridWarpSurface.h; sourceTree = "<group>"; };
+		39203D7C1C591A7900D6225F /* GridWarpSurface.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = GridWarpSurface.cpp; sourceTree = "<group>"; };
 		39264839192224DA0008A7F5 /* ofxXmlSettings.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = ofxXmlSettings.cpp; path = ../../ofxXmlSettings/src/ofxXmlSettings.cpp; sourceTree = "<group>"; };
 		3926483A192224DA0008A7F5 /* ofxXmlSettings.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ofxXmlSettings.h; path = ../../ofxXmlSettings/src/ofxXmlSettings.h; sourceTree = "<group>"; };
 		3926483D192224F90008A7F5 /* tinyxml.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = tinyxml.cpp; sourceTree = "<group>"; };
@@ -718,6 +721,8 @@
 				39C1246519F0AB96005DF557 /* QuadSurface.cpp */,
 				39C1246819F0AB96005DF557 /* TriangleSurface.h */,
 				39C1246719F0AB96005DF557 /* TriangleSurface.cpp */,
+				39203D7B1C591A7900D6225F /* GridWarpSurface.h */,
+				39203D7C1C591A7900D6225F /* GridWarpSurface.cpp */,
 			);
 			path = Surfaces;
 			sourceTree = "<group>";
@@ -1011,6 +1016,7 @@
 				391717EF1B08FFDA00F9A484 /* SetApplicationStateCmd.cpp in Sources */,
 				39C1243F19EE9589005DF557 /* DirectoryWatcherManager.cpp in Sources */,
 				394BD2431C4D63AE0089A48C /* TogglePerspectiveCmd.cpp in Sources */,
+				39203D7D1C591A7900D6225F /* GridWarpSurface.cpp in Sources */,
 				396841821BC93DDC009F0BAE /* AddSurfaceCmd.cpp in Sources */,
 				39C1243519EE9589005DF557 /* ByteBuffer.cpp in Sources */,
 				39C1246B19F0AB96005DF557 /* TriangleSurface.cpp in Sources */,