How to add a second CoordinateSystemIcon to Eyeshot's viewport

Question

I would like to add to the viewport a second system of reference and place it on a specific position of the model. I can see an example image in the documentation Part1 but looking in the sample code I am not able to figure out how to do it.

I tried to create an instance of the CoordinateSystemIcon class but, if I add its entities to the viewport, I get a null reference exception.

Answer 1

As far as i know you can't reuse the coordinate system. The one you see in the animated gif on their website is not in the sample they provided. They certainly have access to it so when they made the sample they probably did on their internal version while the retail doesn't have it. But there is UCSActivator object in the viewport (eyeshot 11-) or model (eyeshot 12+) which look like it but not as much as drawing it yourself would.

I would suggest you make it yourself. Anyhow you already have all the information you need to draw it. you need your origin and the 3 vectors. I will point you toward the arrow sample which show you how to create these arrows with a single method. The steps to recreate this ucs are pretty simple

Steps :

1. Create Sphere color Red @ origin
2. Create arrow color Red @ origin toward X vector
3. Create arrow color Green @ origin toward Y vector
4. Create arrow color Blue @ origin toward Z vector
5. Create a text at end of X vector with text "X"
6. Create a text at end of Y vector with text "Y"
7. Create a text at end of Z vector with text "Z"

Answer 2

As explained here, it's a new feature that will be available in Eyeshot 2020.