Direction of a IES light

[Marten74]

Hello!

I posted a similar question to the one below in the blender plugin forum, but maybe it is actually more appropriate to post it here?

I notice that the orientation of the ies-light is not dependent of the emitter objects orientation. I can rotate the emitter plane, but the light still point in the direction set by the orientation in the texture node. It would be so much easier if 0 rotation in the texture node would orient along the normal of the lamp/emitter plane. I guess what I would wish for is that the ies light should be parented to the mesh, if that makes sense. This would mean that you could orient a spotlight model without the need to fiddle around with the, not so intuitive, orientation controls in the texture emission node. This would become extra handy when working with the plugin.

Sorry if I missed any similar posts. I tried to find answers before posting this.

Thanks

::mb

[gabrielefx]

enable proxy or rotate 180 degrees the x plane
2 years ago I request to Karba and Otoy guys the possibility to visualize on the ies head the (non scaling) geometry distribution and enable the target point to easily point a bunch of ies light without rt pre-visualization.
Today the ies implementation is the worst Octane feature.
Also....don't use ies lights! They generate a lot of noise.

regards

[Marten74]

enable proxy or rotate 180 degrees the x plane
2 years ago I request to Karba and Otoy guys the possibility to visualize on the ies head the (non scaling) geometry distribution and enable the target point to easily point a bunch of ies light without rt pre-visualization.
Today the ies implementation is the worst Octane feature.
Also....don't use ies lights! They generate a lot of noise.

regards

Thank you gabrielefx for your answer!

I have noticed I have to rotate 180 degrees. Not sure what the "enable proxy" is though. What does it do for ies-lights?

As I suggested a possibility would be to some how lock the ies-light direction to the normal of the plane. A parent connection of sorts. I know though that something that seems pretty simple and logic in a users mind can be a completely different story when it comes to programming. Maybe there will be hope for this issue with the rebuild of Octane towards 1.5?

In the type of work I do unfortunately ies is very important. I do know it adds a lot of noise... I was a bit (very) sad when v1.5 had a setback with the light sampling.

Can some one from Otoy comment about ies lights? Is there some development happening? Any future plans? As gabrielfx writes, today the implementation is pretty weak.

Thanks