OctaneRender® for Poser beta - build 1.02p [OBSOLETE] Tweet

[wimvdb]

I found an interesting little bug in either Poser, the plugin or Octane
The light emitter the plugin script produces is a single sided square. It is positioned in front of the actual poser light and rotated 180 degrees - which is fine for lights in the downward direction.
However, I found out while testing IES lights - the square does not emit light when the light (and square) is pointed upwards. So a light in the direction of the ceiliing. You have to rotate it again 180 degrees

Spotlight at 90 at xRotate, rest 0. Light is now pointed at the ceiling (upward)
Create a light emitter and render - check the wall ceiling for the actual light

[Erick]

About the direction of the emitting light with an IES file ...
I recently watched a tutorial about this. In it, it was explained, how the normals of (a single sided) square should be facing, in order to get the IES distribution right.
Great tutorial.
It can be found here: http://www.youtube.com/watch?v=Tedj2lEKvuE ... btw, it's just one of an A to Z string of very good tutorial series but the makers of Octane.

[Zay]

I think Roland mentioned that IES lights will point downwards. You can however rotate the light within Octane.

Maybe Paul can transfer the light rotations in Poser to Octanes IES rotations ??

[face_off]

Video showing the new daylight controller is here.....http://youtu.be/KiIGvoyt0zk. You will love it!

Changes so far for 1.02q are:
1.02q
- Post processing settings are now saved and re-loaded correctly
- New toggle button added (left of the auto refresh button), which when activated, disabled ALL updates to Octane, meaning the current Octane render will continue with restarting.
- Updated splash screen and header to refrect compilation against Octane 1.02
- Focus pick clicking no longer highlights the camera->focalDepth parameter, meaning scrolling after clicking the focus point will not incorrectly move the slider
- The material tab window now displays a preview of the selected material. This adds a slight delay to item clicking (since the bitmap needs to be generated). The preview appears to be of limited use - so it has only been included for feedback and suggestion as this stage. Set MATERIAL_PREVIEW_SAMPLES in OctaneDefaults.py to disable material previews
- Create Emitter From Lights no longer converts infinite lights (since they now feed the Octane sunlight angle)
- Default daylight model set to 1. Canbe changed but to 0 via the DEFAULT_DAYLIGHT_MODEL parameter in OctaneDefaults.py
- The first infinite light in the Poser scene will now be remained to "Daylight", and if the "environment" pin of the rendertarget is set to the "daylight" node, the sun direction will be picked up from that Poser infinite light

Paul

[wimvdb]

A bit more explanation about the IES light direction and single sided plane emitters created from the poser spot lights
If I create a spotlight facing down (xrotate at -90, rest 0), add an IES image to dstribution, then convert this one to an emitter with the script, I get a nice spotlight, everything works as expected.
Now I rotate the light to face upward (*xrotate at 90), refresh and render. The light disappears. The emitter plane has rotated with the light so should be facing the correct way, but it is not. If you add another light, you can see that in the render the normal is still facing the same way, in Poser it is facing the other way
In the attached screenshot
- 2 spotlights, one facing up one facing down. In the wireframe you can see one of the 2 planes (on the left) the other is facing the other way and is not visible (correct since they are single side objects). The render shows only 1 spotlight, but clearly both emitter planes are visible. If you either rotate the image in octane or rotate the plane in poser will render the light

[wimvdb]

Video showing the new daylight controller is here.....http://youtu.be/KiIGvoyt0zk. You will love it!

You are absolutely right. This looks fantastic, now you have a visible reference of where the sun is and linked with the new features of the daylight system, it looks great!

[face_off]

Thanks Wim

Does changing the "orientation" of the emitter help at all?

Paul

[wimvdb]

Thanks Wim

Does changing the "orientation" of the emitter help at all?

Paul

Yes, If you set the orientations X value to 180 it works as well

[face_off]

I have just been testing this. So far - I've had no trouble getting an IES light to point "up" - simply by pointing the emitter prop "up". However the "one sided square" emitter was not parented to a light. I wonder if the Poser parenting system is flipping the square over at certain light angles?

[face_off]

EDIT: It looks like IES lights exhibit some unpredictable behavior. They generally point directly down, regardless of the emitter angle - unless the emitter is pointing almost up, in which case they may work (in the case above) or may not.

So in summary, point the emitter prop down (any direction), and use the "orientation" sliders to get the light angle right.

Paul