Sunday, August 12, 2007

Radiosity or not radiosity !?

No radiosity, 3 spots, rendertime less then 7 seconds:

With radiosity, 3 spots, 1 light emitting sources in interior of the vehicle, 300 iterations, rendertime 19 secons:

How does the light source look like for radiosity?

It is only a cube with the setting Emitting on 1 in shaders.

And whats this? Why is this video rotated 180 degree?
Sometimes YouTube doesn't recognise raw-Avi???

Thursday, August 9, 2007

Photo composition - scorpion

How to create a photo composition with Blender?

The important point is the shadow cast on the floor. Take a look on the picture:

Well the composition is not perfect, but it requires not much time for modeling and composition, only a few simple steps.

First I created a simple scorpion model, with a little sculpt-mode and face-extraction.

Then I placed it on a plane.
Note: Select the option "OnlyShadow" for the plane! You will need only the shadow on the plane, not the plane itself. Therefore this option will make the plane invisible, but the shadow will be rendered on the photo.

Then select in the menu "View" a background image.

Align the camera in order that the model will be placed on the floor.

Last step: The spotlight. Some experimenting is necessary ;)

Wednesday, August 1, 2007

Sculpting in Blender

There many tutorials on the web.
Sculpting Mode is new in Blender. A powerful tool for modeling complex objects.

Well, this is the result after some experimenting with the settings.
For adding mass to the shape the brush needs to be big enough, else the adding requires to much time. A good size for beginning is the default of 50 and a strength of 100.

Some notes on rendering:
If you want to render your sculpture, perhaps you will be surprised of the result.
There will be nothing else then the unchanged box or sphere, nothing more, no sculpture.
The reason is a setting called "Multires-Rendering-Pin". This setting on default will result in a simple box. Increase it to 4 and you will get the best result.