public static StencilTestNode Create()
{
var model = new StencilTestModel();
var vs = new VertexShader(vertexCode);
var fs = new FragmentShader(fragmentCode);
var provider = new ShaderArray(vs, fs);
var map = new AttributeMap();
map.Add(inPosition, StencilTestModel.strPosition);
var polygonModeState = new PolygonModeState(PolygonMode.Line);
var lineWidthState = new LineWidthState(10);
var builder = new RenderMethodBuilder(provider, map, polygonModeState, lineWidthState);
var node = new StencilTestNode(model, builder);
node.polygonModeState = polygonModeState;
node.lineWidthState = lineWidthState;
node.Initialize();
return(node);
}
/// <summary>
/// Read an extended state
/// Note: I'm still not sure whether its worth to precompile the states, it
/// might be enough to interprete the states each time they are used.
/// </summary>
private List <State> ReadExtendedState(PdfDictionary extGStateDict)
{
var extendedState = new List <State>();
foreach (var command in extGStateDict.Elements.Keys)
{
// mögliche Inhalte in den settings siehe in der PDF Reference 1.7, Kapitel 8.4.5, Seite 128, Tabelle 58
switch (command)
{
case PdfKeys.LW:
{
var lineWidth = new LineWidthState();
extendedState.Add(lineWidth);
lineWidth.LineWidth = extGStateDict.Elements.GetReal(command);
break;
}
case PdfKeys.ca:
{
var fillAlpha = new FillAlphaState();
extendedState.Add(fillAlpha);
fillAlpha.Alpha = extGStateDict.Elements.GetReal(command);
break;
}
case PdfKeys.CA:
{
var strokeAlpha = new StrokeAlphaState();
extendedState.Add(strokeAlpha);
strokeAlpha.Alpha = extGStateDict.Elements.GetReal(command);
break;
}
case PdfKeys.Font:
{
var font = new FontState();
extendedState.Add(font);
var fontArray = extGStateDict.Elements.GetArray(command);
var fontDict = fontArray.Elements.GetDictionary(0);
font.FontDescriptor = FontManager.ReadFontDescriptor(fontDict);
font.FontSize = fontArray.Elements.GetReal(1);
break;
}
case PdfKeys.SMask:
{
var softMaskState = new SoftMaskState();
extendedState.Add(softMaskState);
var smaskDict = extGStateDict.Elements.GetDictionary(command);
if (smaskDict != null)
{
softMaskState.SoftMask = GetSoftMask(smaskDict);
}
break;
}
}
}
return(extendedState);
}