Problems with deformers and blackbody emission.

[lideborg]

Was sitting all day today making beams and "lasers". But problems started appearing as my emission-textures stopped working after changing in my spline-deformers. So i tried some stuff and it came on and off. Here is a link to what i mean, as long as the deformer has no keyframes it works fine but when i start animating it some stuff just stops working, anyone had this problem and knows how o resolve it? Please I've been trying for hours now... (c4d file here http://d.pr/f/19j60)

[tomabobu]

The problem is not the deformer. The texture emission works only on the front face of a polygon and not on the back face.
In the spline deformer, if you put the starting point to 46% and end point to 0%, you will get a geometry with the flipped normals and that is the reason the emission isn't visible.
Put the starting point to 0% and end to 46% (reverse) and the normals will be pointing outwards and the emission will work as expected.

[aoktar]

A note for emissive geometry. Best is to put also a object tag over this kind of geometry. This avoids from normalisation problems of illuminations and also matches well with render output. Also see FAQ topic.

[lideborg]

Thank you guys! Never expected it to bee this easy!