topic 2D coordinates of curve endpoints in View3D in Revit API Forum

2D coordinates of curve endpoints in View3D

Anonymous — Wed, 26 Nov 2014 14:56:59 GMT

Hello everybody,

I want to obtain 2D coordinates at the viewport of curve endpoints within a View3D.

Therefore, I filter the visible elements with the FilteredElementCollector. Is there a way to directly obtain the 2D coordinates on the screen without doing perspective transformation of the element to the camera coordinates and project it to the image plane?

Greetings,

Chris

Re: 2D coordinates of curve endpoints in View3D

jeremytammik — Wed, 07 Jan 2015 17:22:04 GMT

Dear Chris,

Yes, there is.

You can use the UIView class and its two methods GetZoomCorners and GetWindowRectangle.

The former returns Revit XYZ coordinates, the latter a Rectangle on the screen.

I show how to make use of this in

http://thebuildingcoder.typepad.com/blog/2012/10/uiview-windows-coordinates-referenceintersector-and-my-own-tooltip.html

Did you find any other interesting solution in the (long) meantime?

Cheers,

Jeremy