public bool Combine(IRenderer cand)
{
if (_renderer == null)
{
return(false);
}
if (cand is ScaleRenderer && cand != this &&
((ScaleRenderer)cand).MinimumScale == this.MinimumScale &&
((ScaleRenderer)cand).MaximumScale == this.MaximumScale)
{
return(_renderer.Combine(((ScaleRenderer)cand).Renderer));
}
return(false);
}