vray grass

If you are using v-ray and don't use the VRayDisplacmentMod, then you should switch to mental ray! I use both, but v-ray is very powerful at performing geometric displacement, and is superb at creating organic objects; even grass looks good with displacement. Mental ray is good at displacing small polygons of geometry, where V-ray is good at displacing detail over large polygons. For this reason v-ray 1.50 sp1 is much more successful at creating grass for very large sites; a big plus!

The shader is simply just a VRayMat, with a grass map in the diffuse slot. Then I applied the VRayDisplacementMod modifier to the object. I instanced the image map from the shader into the displacement modifier.




VRayDisplacementMod settings:
• For something like grass it’s very important to use 2D mapping rather 3D mapping.
• I instanced the image map from the shader into the Texmap.
• I changed the amount to 4” to have taller grass blades.
• I increased the resolution to 2048 for better quality.

information courtesy http://3dsmaxrendering.blogspot.com

BillBoard Generator 2.62

A simple script that facilitates the creation of vertical planes for use with trees/people images billboards.

1.Select a diffuse map (tree/person image)

2. Select a matching Alpha map of the same map. or press the lock icon if you use a TGA/TIFF image with an embedded Alpha channel.

3. you may resize the plane to a desired height or width (great for specific people heights).

4. Press the Generate! button.

Once done the script will place a vertical plane with the tree or person in 0,0,0 .

You may change some parameters both before and after the billboard is created.

If you check the Random checkbox - each time you press the Generate! button - a billboard of slightly different dimensions will be created. You can also determine the max/min offsets.

The defaults for the billboard name and its material can be modified only prior to its creation.

You can Pick Point in Viewport < to specify the exact location of a newly created billboard. If you already have one selected - picking a point will move it to that new point. You may reset it to the world zero point by pressing the Reset button.

If you need more than one instance of this billboard - use the scatter engine. Enable it , Type the number of duplicates and define a rectangular area where the billboards will be generated. Scatter uses the Random function if it is enabled.

You may also modify the Shadows casting and reception and visibility parameters of the billboards.

The Orientation command will orient the selected billboard to an object - preferably a camera.

To download the script , go ahead Mr.Nir sullam's website who has kindly given us permission to put this on our blog

http://www.orvatsel.com/max/