OTOY Forums

i try to match the rotation of the reflected environment texture to my 'sun by direction' rotation. what kind of node/math setup should i use when doing so? in order to get the direction of the sun i can use the 'forward' directional vector from the item info node, but then, how convert this to degrees of rotation? i also need to be able to enter a manual offset of rotation in degrees, as each environment texture has different fixed sun positions. see a screenshot here

thanks for your input

markus

This setup should work. The vector to scalar node is in "X Channel" mode to get the heading, and the multiply node is inverting the angle, so set the B parameter to -1.0.

Thanks,
-Juanjo

thanks juanjo, i guess it is solution for direct light orientation. unfortunately, i have a setup with a keyframed targeted light, so basically i have to find out first how to calculate the directional vector for a light - target null, then feed your nodes with that...

anyone can help me with that part? in other words, a nodal setup to calculate right up and forward from a object with is rotated because of poniting at a target.

cheers

markus

Hi juanjgon
how should the Node Editor look like when I use Light info and Direction instead of Item info?

I'm trying to find a way to rotate the HDR Enviroment Texture map (Heading Rotation) with Direct Light in the scene (I'm using the keyframe option)