private static IGeometryBuilderRenderer Renderer(IGeometryBuilder builder)
{
var builderType = builder.GetType();
var rendererTypes = typeof(IGeometryBuilderRenderer).Implementors();
foreach (var rendererType in rendererTypes)
{
var customRenderer = rendererType.Attribute <CustomRenderer>();
if (null == customRenderer)
{
continue;
}
if (customRenderer.Type == builderType)
{
try
{
var customRendererInstance = (IGeometryBuilderRenderer)Activator.CreateInstance(rendererType);
return(customRendererInstance);
}
catch
{
Debug.LogError(string.Format(
"Could not instantiate custom IGeometryBuilderRenderer {0}. Does it have a public default constructor?",
rendererType));
break;
}
}
}
return(new StandardGeometryBuilderRenderer());
}
private static string Description(IGeometryBuilder builder)
{
var builderType = builder.GetType();
var customName = builderType.Attribute <DescriptionAttribute>();
if (null != customName)
{
return(customName.Description);
}
return("[No description]");
}
private static string Name(IGeometryBuilder builder)
{
var builderType = builder.GetType();
var customName = builderType.Attribute <DisplayNameAttribute>();
if (null != customName)
{
return(customName.DisplayName);
}
return(builderType.Name);
}
/// <summary>
/// Retrieves a factory.
/// </summary>
/// <param name="builder"></param>
/// <param name="factories"></param>
/// <returns></returns>
private static MethodInfo Factory(
IGeometryBuilder builder,
MethodInfo[] factories)
{
foreach (var method in factories)
{
var attribute = method.Attribute <CustomFactory>();
if (null != attribute && attribute.Type == builder.GetType())
{
return(method);
}
}
return(typeof(GeometryProvider).GetMethod(
"DefaultFactory",
BindingFlags.Static | BindingFlags.NonPublic));
}