That sounds about right. xstream is more than just a bridge. It allows bi-directional communication between the renderers of both products. The host application displays vue objects and say, c4d objects. Each application takes care of editing its own objects. If you edit the materials of a vue object from inside c4f, you will see the vue material editor come up. Objects from both scenes interact with each other (occlusion, reflections, etc) xstream coordinates both rederers to work together. Vue objects are rendered with vue's render engine and c4d objects are rendered with c4d's engine. The 'bridge' allows information about reflections, illumination, radiosity, shadows, etc.. to be rendered together. Since each bridge is really a standalone application (one for each host application), and since the market for this kind of bridge is relatively limited, the pricing is understandable.

• agiel - www.linfa.net