Relevant to Blender v2.31
YafRay currently supports only Mesh Objects. An example of a simple triangular planar plate is:
<transform
m00 = "0.997525" m01 = "0.070303" m02 = "0.001329" m03 = "0.115816"
m10 = "-0.018745" m11 = "0.284097" m12 = "-0.958612" m13 = "1.522439"
m20 = "-0.067771" m21 = "0.956215" m22 = "0.284711" m23 = "3.272361"
m30 = "0.000000" m31 = "0.000000" m32 = "0.000000" m33 = "1.000000"
>
<object name = "Plane.002" shader_name = "Plane.002.mat" caus_IOR = "1.500000" recv_rad = "on" emit_rad "on"
shadow = "on">
<attributes>
<caus_tcolor r = "1.000000" g = "1.000000" b = "1.000000"/>
<caus_rcolor r = "1.000000" g = "1.000000" b = "1.000000" />
</attributes>
<mesh autosmooth = "30.0" >
<points>
<p x"4.403727" y="-4.403728" z="0.000000" />
<p x="-4.403727" y="-4.403727" z="0.000000" />
<p x="-4.403725" y="4.403728" z="0.000000" />
</points>
<faces>
<f a="0" b="2" c="1" />
</faces>
</mesh>
</object>
</transform>
The Transform tag defines the transform matrix for the enclosed object (position, scale and rotation from the world origin point).
The object tag defines the object geometry, it has a series of parameters:
caus_IOR: Index of
Refraction for Caustic Photons.
recv_rad: Whether to
receive radiosity (bounced light generated from Photon Lights) ('on' or
'off').
emit_rad: Whether to emit
radiosity ('on' or 'off').
shadow: Whether or not to
cast a shadow ('on' or 'off').
caus_tcolor: The colour to
tint transmitted photons (colours the refractive caustics).
caus_rcolor: The colour to tint reflected photons
(colours the reflective caustics).
The key tag within an object definition is the Mesh tag, which defines its geometry:
autosmooth: Threshold angle for the smoothing
algorithm (omit to get 'faceted' objects).
Within the mesh tag a <points> block defines the vertices of the mesh, while a <faces> block defines triangular faces by the indices of their three vertices.