Try to make this small experiment: Create a box, and place a sphere on top of it. Assign to the sphere a glowing material and enable all settings explained before (don't create any light). In the rendering you will see that all the scene is illuminated and that the sphere is emitting light. But it is clearly visible that the illumination is not coming only from the sphere. If you don't create any light 3D Studio Max will create a default light. But what if you don't want this additional default light of 3D Studio Max because you need a very dark scene in which only the sphere is visible as glowing object ?
Let's go on with our small experiment:Just create a Mr Omni light, and disable it from the modify panel (uncheck in the beginning of the panel the slot "ON")
Make a new rendering. Only now the scene is how it has to be in reality. The only light which is illuminating the scene is the sphere.
Here below you have a sample with a room.
Image A:
Rendering of a room with a default light.
Image B:
Rendering of the same room with Architectural material assigned to the box on the ceiling. It is clearly visible that the entire room has the same illumination like before, now we can see shadows under the teapot. Since we are using a default light the entire scene looks wrong. The light should come only from the ceiling.
Image C:
Exactly the same scene of scene B, but now we have created and additional MR Omni and we have disabled it. Now finally we have a realistic result. It is clearly visible that the illumination is coming from the white on the ceiling.
Image D:
Same scene like image C, but now the MAX BOUNCE in the Final Gather panel has a value of 3.
From this sample you can see that it is possible to illuminate a room only trough this material, however I suggest to use always additional lights.
A similar effect like the architectural material can be simulated with a simple self-illuminated material on which you apply an OUTPUT in which you increase the output value. But the architectural material is faster to manage.
That's it.
I hope you have enjoyed this tutorial.
Related Links
How to create Chrome Material - Read Now
How to create Car Paint Material - Read Now
Mental Ray Illumination - Read Now
Caustics through Mental Ray - Read Now
|
|
|
