Obstructed Vector

Revit
#1

Im am quite new to Dynamo and am trying to develop my companies daylight and sunlight analysis services to run in Dynamo.

Can anybody let me know if there is a node to detect if a line or vector has an unobstructed view of the sky?
Plotting out the points and generating a line or vector between them is no a problem.
But determining if they reach each other without interference from other elements in the scene is something I cannot figure out how to do.

Like all issues with Dynamo I imagine this is just a matter of getting the correct node.
But as this is a fundamental part of the workflow I am trying to develop, any guidance would be much appreciated.

#2

The good news is: Yes! There is such a node. Geometry.DoesIntersect
The “bad” news is: You’ll have to feed it a list of everything you want to test against, which for complex scenes can mean pulling a loooot of geometry into Dynamo that you might otherwise not be so interested in. Of course, if you have all those elements already anyway, then there’s no problem!

PS: just make sure the lacing of the node is set correctly (e.g. Cross Product, if you want to test all lines against everything else)

#3

For Daylight you could check Honeybee (from https://www.ladybug.tools/) it was originally for Grasshopper developed but now you can also have it in Dynamo.

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#4

Thanks Avz,

That sounds like it is what i am looking for.
Regarding the amount of geometry, i will mass model where i can to reduce this, but i know it is going to be a less than ideal set up.

Miguel,
I have found Ladybug and Honeybee.
They are a fantastic resource and will be crucial to my workflow.

I’m currently trying to juggle developing this process with an already hectic work schedule, but i will report back when i have had a chance to flex these.

Many thanks for the quick responses.

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