AccuRender nXt

advanced rendering for AutoCAD

A user asked about the different ways to add grass to a model. Below are sample renderings showing 3 different approaches, along with links to download the groundcover and material files used.

1. Textured Material - Use a material with a grass texture image.

This model was rendered by simply using the textured nXt material call Grass-Rye_Dark.ArMaterial.

This material is included with the standard nXt Material Libraries that can be downloaded here:

http://s3.amazonaws.com/mcneel/accurender/nXtMaterials_20110218.zip

2. nXt Groundcover - Use a nXt grass groundcover to represent the grass.

This is the same model with a grass ground cover applied to the lawn:

This creates a more realistic looking grass, since the groundcover add geometry representing blades of grass to the rendering, but takes more time to render than a simple textured material.

The nXt groundcover used for this rendering can be downloaded here:

http://www.renderplus.com/downloads/Other/nXt_Grass/nXtGrass_Ground...

You can experiemt with the settings for the grouncover file, to change the size, density and other parameters, by editing it with the nXtPlantEditor which is installed with nXtRender. Note: You can change the height of the grass by changing the Foliage Width. Because the aspect ratio of the blade of grass image is maintained, this will also set the height of the blade.

Note: The groundcover file (*.ArGroundcover) can be selected and added to the model from this menu:

3. Displacement Material - Use a material with a displacement texure to add nodes of height to the image to simulate blades of grass:

The nXt displacement material used for this rendering can be downloaded here:

https://www.renderplus.com/downloads/Other/nXt_Grass/Grass- Displac...

 

Use the nXtMaterialEditor to change the Height, Facet, and Z Offset for the displacement.

  1. Height is the height of the displacement (from the surface) ie longer blades of grass.
  2. Facet is how the surface is broken up. Higher will have more detail. Like facets of a curve.
  3. z offset is where the surface plane starts. You may want to push the surface back to accommodate the lift from the height variable.  

To help you get started using these different types of grass, the model used for these sample renderings can be downloaded here:

https://www.renderplus.com/downloads/Other/nXt_Grass/3D House.dwg

 

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Roy Hirshkowitz replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"I'm guessing it's the same problem.  nXt has to be present for a conversion to work properly with a drawing that has nXt data.  That's a known issue.  Converting using any other method probably will not work properly if…"
Aug 23
George Ioannidis replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"I think Norton mentioned that he did the conversion using TrueView, not the AutoCAD itself. He is still on ver. 2010 I suppose, otherwise he could do renderings directly in 2018. Maybe TrueView isn't quite versionwise correct as regards to…"
Aug 21
Roy Hirshkowitz replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"One additional thought.  A known issue when saving drawings to a previous version is that nXt must be loaded and running before you convert the drawing. Try the following: 1. Open your 2018 drawing in AutoCAD. 2. Start nXt by typing…"
Aug 1
Roy Hirshkowitz replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"Interesting.  I'm not sure what I can do about it-- the oldest AutoCAD I have available for testing is 2013.  AutoCAD 2010 is actually 12 years old which is an eternity in software.  You can try sending me a simple converted…"
Aug 1
norton torres replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"yes... is every 3d model that I I import from autocad 2018 to autocad 2010 and  it dosent matter that I convert the drawing  in trueview to dwg 2010 it continues the error, it happens this way, I open the drawing in autocad 2010 then I…"
Jul 31
Roy Hirshkowitz replied to norton torres's discussion I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010
"If it's crashing consistently with a particular drawing, let me know, there may be a problem.  Please don't use all caps when composing forum messages."
Jul 30
norton torres posted a discussion

I GOT AN ERROR WHILE RENDERING IN AUTOCAD 2010

 I OPEN A 3D DRAWING IN AUTOCAD 2010 IT CRASH WHILE RENDERING WITH ACCURENDER.See More
Jul 28
Rich Hart posted a discussion

Grass Options for nXtRender

A user asked about the different ways to add grass to a model. Below are sample renderings showing 3 different approaches, along with links to download the groundcover and material files used.1. Textured Material - Use a material with a grass texture image.This model was rendered by simply using the textured nXt material call Grass-Rye_Dark.ArMaterial.This material is included with the standard nXt Material Libraries that can be downloaded here:…See More
Jun 22

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