/// <summary>
/// 根据<see cref="IndexBufferPtr"/>的具体类型获取一个<see cref="PickableRenderer"/>
/// </summary>
/// <param name="bufferable"></param>
/// <param name="propertyNameMap"></param>
/// <param name="positionNameInIBufferable"></param>
/// <param name="switches"></param>
/// <returns></returns>
public static InnerPickableRenderer GetRenderer(
this IBufferable bufferable,
PropertyNameMap propertyNameMap,
string positionNameInIBufferable,
params GLSwitch[] switches)
{
if (bufferable == null || propertyNameMap == null || string.IsNullOrEmpty(positionNameInIBufferable))
{
throw new ArgumentNullException();
}
IndexBufferPtr indexBufferPtr = bufferable.GetIndex();
if (indexBufferPtr is ZeroIndexBufferPtr)
{
return(new ZeroIndexRenderer(bufferable, PickingShaderHelper.GetShaderCodes(), propertyNameMap, positionNameInIBufferable, switches));
}
else if (indexBufferPtr is OneIndexBufferPtr)
{
return(new OneIndexRenderer(bufferable, PickingShaderHelper.GetShaderCodes(), propertyNameMap, positionNameInIBufferable, switches));
}
else
{
throw new NotImplementedException();
}
}
