Fixed conversion from Values to other types: Values now report being of the contained type.

Added toImage function to ScriptValue.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1083 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gfx/generated_image.cpp

@@ -19,6 +19,9 @@
 
 ScriptType GeneratedImage::type() const { return SCRIPT_IMAGE; }
 String GeneratedImage::typeName() const { return _TYPE_("image"); }
+GeneratedImageP GeneratedImage::toImage(const ScriptValueP& thisP) const {
+	return static_pointer_cast<GeneratedImage>(thisP);
+}
 
 Image GeneratedImage::generateConform(const Options& options) const {
 	return conform_image(generate(options),options);