preparation to receive camera image data from physics server

increase shadowmap world size default to 50 units (meter), 10 units (meter) was too small for most examples.

examples/StandaloneMain/main_tinyrenderer_single_example.cpp

@@ -316,6 +316,17 @@ struct TinyRendererGUIHelper : public GUIHelperInterface
 
 	}
 
+	virtual void copyCameraImageData(unsigned char* pixelsRGBA, int rgbaBufferSizeInPixels, float* depthBuffer, int depthBufferSizeInPixels, int startPixelIndex, int* width, int* height, int* numPixelsCopied)
+	{
+		if (width)
+			*width = 0;
+		if (height)
+			*height = 0;
+		if (numPixelsCopied)
+			*numPixelsCopied = 0;
+	}
+
+
 	virtual void autogenerateGraphicsObjects(btDiscreteDynamicsWorld* rbWorld) 
 	{