private static void ComposeRoot(Root node, StringBuilder expr) {
expr.Append(s_Slash);
}
private bool Setup()
{
root = new Root();
SetupResources();
bool carryOn = Configure(true);
if (!carryOn) return false;
ChooseSceneManager();
CreateCamera();
CreateViewports();
// Set default mipmap level (NB some APIs ignore this)
TextureManager.Singleton.DefaultNumMipmaps = 5;
// Create any resource listeners (for loading screens)
CreateResourceListener();
// Load resources
LoadResources();
// Create the scene
CreateScene();
CreateFrameListener();
CreateInput();
return true;
}
//>> LocationPathPattern ::= '/' | RelativePathPattern | '//' RelativePathPattern | '/' RelativePathPattern
//>> | IdKeyPattern (('/' | '//') RelativePathPattern)?
private AstNode ParseLocationPathPattern(AstNode qyInput) {
AstNode opnd = null;
switch (this.scanner.Kind) {
case XPathScanner.LexKind.Slash :
NextLex();
opnd = new Root();
if (this.scanner.Kind == XPathScanner.LexKind.Eof || this.scanner.Kind == XPathScanner.LexKind.Union) {
return opnd;
}
break;
case XPathScanner.LexKind.SlashSlash :
NextLex();
opnd = new Axis(Axis.AxisType.DescendantOrSelf, new Root());
break;
case XPathScanner.LexKind.Name :
if (this.scanner.CanBeFunction) {
opnd = ParseIdKeyPattern(qyInput);
if (opnd != null) {
switch (this.scanner.Kind) {
case XPathScanner.LexKind.Slash :
NextLex();
break;
case XPathScanner.LexKind.SlashSlash :
NextLex();
opnd = new Axis(Axis.AxisType.DescendantOrSelf, opnd);
break;
default :
return opnd;
}
}
}
break;
}
return ParseRelativePathPattern(opnd);
}
public void Go()
{
// show toolbox
if (DebugMode){
(new Toolbox()).Show();
}
if (!Setup()) return;
root.StartRendering();
// clean up
DestroyScene();
root.Dispose();
root = null;
}
//>> LocationPath ::= RelativeLocationPath | AbsoluteLocationPath
private AstNode ParseLocationPath(AstNode qyInput) {
if (this.scanner.Kind == XPathScanner.LexKind.Slash) {
NextLex();
AstNode opnd = new Root();
if (IsStep(this.scanner.Kind)) {
opnd = ParseRelativeLocationPath(opnd);
}
return opnd;
}
else if (this.scanner.Kind == XPathScanner.LexKind.SlashSlash) {
NextLex();
return ParseRelativeLocationPath(new Axis(Axis.AxisType.DescendantOrSelf, new Root()));
}
else {
return ParseRelativeLocationPath(qyInput);
}
} // ParseLocationPath
