Add description of blade attributes

[petrvanekrobe]

No description provided.

[petrvanekrobe]

This is to address #136

[RichardTea]

In the diagrams, Tilt should be at a positive angle (+30 or +90), not "straight down" (0 degrees).
Straight down leaves the "Up" open to interpretation - eg if the real sample fixture was hung 'backwards' compared to how it's set up in the GDTF.

The GDTF conventions will often be different to the 'internal' conventions used by the various manufacturers and authors, so their gut assumptions may be incorrect.

It is much easier for users to build 'most of' the fixture personality, then hang it, set Pan 0 deg and Tilt +90 deg then look at the result compared to a single diagram and know that yes, they did hang it the right way around and that is Blade 1

[RichardTea]

Secondly, the 1A/1B blade end labels in the draft PNG are too small for the 800x428 resolution of the PNG.
They'll need to be somewhat larger or the image resolution significantly increased.

[vlastimilvasicek]

Secondly, the 1A/1B blade end labels in the draft PNG are too small for the 800x428 resolution of the PNG. They'll need to be somewhat larger or the image resolution significantly increased.

Hello Richard, agree, we will improve the picture once we will have the final definition.

[vlastimilvasicek]

In the diagrams, Tilt should be at a positive angle (+30 or +90), not "straight down" (0 degrees). Straight down leaves the "Up" open to interpretation - eg if the real sample fixture was hung 'backwards' compared to how it's set up in the GDTF.

The GDTF conventions will often be different to the 'internal' conventions used by the various manufacturers and authors, so their gut assumptions may be incorrect.

It is much easier for users to build 'most of' the fixture personality, then hang it, set Pan 0 deg and Tilt +90 deg then look at the result compared to a single diagram and know that yes, they did hang it the right way around and that is Blade 1

The reason we did not tilt the fixture was exactly what you mentioned erlier "Needs to show the Beam XYZ orientation axes - primarily for static fixtures (which don't have P&T)".
The biggest advantage if this definition is that it clears any beam geometry rotations and can be applied for both static fixtures and moving heads. This XYZ definition is very straight forward and says exactly in what position the beam is and tells in what direction the blade is moving. I agree with adding direction of the Tilt+ - will be benefitial for understanding. This will be definitely discussed during the next group meetings, so thank you for your input.