/// <summary>
/// Creates the appropriate OpenGLDrawingProvider from a file string
/// </summary>
/// <param name="providerFileString">The file string to parse</param>
/// <returns>The OpenGLDrawingProvider</returns>
public static IOpenGLDrawingProvider InstantiateFromString(string providerFileString)
{
//The elements in the provider file-strings are separated by semicolons
string[] providerElements = providerFileString.Split(';');
if (providerElements.Length < 1)
{
throw new ApplicationException("String does not represent an OpenGLDrawingProvider");
}
else if (providerElements.Length == 1)
{
//this may be an empty provider!
if (providerElements[0] == "?")
{
return(null);
}
else
{
throw new ApplicationException("String does not represent an OpenGLDrawingProvider");
}
}
//Check which provider we are dealing with, instantiate it and let it populate itself
IOpenGLDrawingProvider retval;
switch (providerElements[0])
{
case "OneColor":
retval = new OneColorProvider();
retval.FromFileString(providerFileString);
return(retval);
case "FourSquare":
retval = new FourSquareProvider();
retval.FromFileString(providerFileString);
return(retval);
case "Circle":
retval = new CircleProvider();
retval.FromFileString(providerFileString);
return(retval);
case "LinGrad":
retval = new LinGradientProvider();
retval.FromFileString(providerFileString);
return(retval);
default:
throw new ApplicationException("Could not recognize drawing provider");
}
}
/// <summary>
/// Allows to copy arbitrary (but known to the factory) OpenGL drawing providers
/// Effectively implements generic copy constructor
/// </summary>
/// <param name="toCopy">The drawing provider we want to copy</param>
/// <returns>A new drawing provider with the same values as the current provider</returns>
public static IOpenGLDrawingProvider Copy(IOpenGLDrawingProvider toCopy)
{
if (toCopy == null)
{
return(null);
}
else if (toCopy is OneColorProvider)
{
OneColorProvider tc = toCopy as OneColorProvider;
OneColorProvider retval = new OneColorProvider(tc.Color);
retval.AlignmentRotationZ = tc.AlignmentRotationZ;
retval.AlignmentTranslationX = tc.AlignmentTranslationX;
retval.AlignmentTranslationY = tc.AlignmentTranslationY;
retval.ImageRotationZ = tc.ImageRotationZ;
retval.ImageTranslationX = tc.ImageTranslationX;
retval.ImageTranslationY = tc.ImageTranslationY;
return(retval);
}
else if (toCopy is FourSquareProvider)
{
FourSquareProvider tc = toCopy as FourSquareProvider;
FourSquareProvider retval = new FourSquareProvider(tc.ColorSquare1, tc.ColorSquare2, tc.ColorSquare3, tc.ColorSquare4);
retval.AlignmentRotationZ = tc.AlignmentRotationZ;
retval.AlignmentTranslationX = tc.AlignmentTranslationX;
retval.AlignmentTranslationY = tc.AlignmentTranslationY;
retval.ImageRotationZ = tc.ImageRotationZ;
retval.ImageTranslationX = tc.ImageTranslationX;
retval.ImageTranslationY = tc.ImageTranslationY;
return(retval);
}
else if (toCopy is CircleProvider)
{
CircleProvider tc = toCopy as CircleProvider;
CircleProvider retval = new CircleProvider(tc.Color, tc.Center, tc.Radius, tc.SegmentCount);
retval.AlignmentRotationZ = tc.AlignmentRotationZ;
retval.AlignmentTranslationX = tc.AlignmentTranslationX;
retval.AlignmentTranslationY = tc.AlignmentTranslationY;
retval.ImageRotationZ = tc.ImageRotationZ;
retval.ImageTranslationX = tc.ImageTranslationX;
retval.ImageTranslationY = tc.ImageTranslationY;
return(retval);
}
else if (toCopy is LinGradientProvider)
{
LinGradientProvider tc = toCopy as LinGradientProvider;
LinGradientProvider retval = new LinGradientProvider(tc.Topleft, tc.Width, tc.Height, tc.ColStart, tc.ColEnd);
retval.AlignmentRotationZ = tc.AlignmentRotationZ;
retval.AlignmentTranslationX = tc.AlignmentTranslationX;
retval.AlignmentTranslationY = tc.AlignmentTranslationY;
retval.ImageRotationZ = tc.ImageRotationZ;
retval.ImageTranslationX = tc.ImageTranslationX;
retval.ImageTranslationY = tc.ImageTranslationY;
return(retval);
}
else
{
//we should never end up here
System.Diagnostics.Debug.Assert(false, "Tried to copy unkown provider");
return(null);
}
}
