Jump to content

Aligning Items to be Perpendicular to a Arc


MattG

Recommended Posts

I am working on a stage lighting project, but the problem I am finding is something that I am sure other people in other industries experience.

The thing to do in stage lighting design is to have curved trusses with all sorts of lights on them. What I have found is the easiest way for me to be sure they are properly aligned is draw my curved truss and then draw a arc that is aligned to the pipe that I want to hang from so in my current example I have a 49'-10" Diameter Arc that is a total of a 30degree sweep. However I have lets say 6 lights evenly distributed on there. My current method is to take that 30deg and divide by 7 which I just do in the oip of the arc because it ends up being a crazy number. I then duplicate that and divide that in half and align the first one and then double the original arc and align a light to the position that the arc ends and they are all evenly distributed. I'm good right.

Now the problem I want all my lights to appear to be perpendicular to the arc that I aligned them to. Does anyone have a good way to do this? Does this make sense?

The lights want to rotate at a comparable angle to the arc as the arc goes along. Can anyone tell me what type of math I would need to do to determine this?

Matt

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...