FileMesh

From Sunflow Wiki

Contents 1 File-Meshes 2 Transforms 3 Object Motion Blur

File-Meshes

You can import an obj, stl, or ra3 file automatically into Sunflow without having to convert it to Sunflow's file forma:

object { 
   shader myShader
   type file-mesh
   name objectName
   filename test.obj 
   smooth_normals true 
}

The filename can also be an absolute path.

The smooth_normals line is optional, it defaults to false (which is best if you have millions of triangles. Note that the stl format does not store mesh connectivity so it isn't possible to smooth their normals.

Sunflow doesn't accept an obj file if there are texture coordinates and normals stored in it. For example, a line like f 1/1/1 2/2/2/ 3/3/3 in the obj file doesn't work. Certain exporters will allow you to not have this information exported to the file. This limitation can be overcome using NeuroWorld's obj to .sc converter.

Transforms

It's important to note that objects (including file meshes) can also be transformed. The transform line goes under the shader declaration (or geometry declaration if it is an instance) in the object syntax. For transforms, you can use or not use the following transform options:

translate (translate x y z)
rotatex
rotatey
rotatex
scalex
scaley
scalez
scaleu

You could also use a transform matrix by row (row) or column (col). For example, here is one using some of the above transforms:

object { 
   shader myShader
   transform {
      translate 1.0 4.6 0.3
      scaleu 0.5
   }
   type file-mesh 
   name objectName 
   filename myOBJ.obj 
   smooth_normals true 
}

And one using matrices:

object {
   name nameOfObject
   shader shaderForObject
   transform col my4x4MatrixReadByColumn
   ...
}

Object Motion Blur

As with generic meshes, in the 0.07.3 SVN version of Sunflow file meshes can be object blurred.