@alexschreyer said: I ran into a problem a while ago where I needed area centroids of irregular planar shapes. Since I couldn't find an appropriate SketchUp plugin, I used Rhino that time. The attached plugin adds this functionality to SketchUp. Contrary to some plugins that I found, which use the centroid of the bounding box (and then add a construction point there), this one calculates the actual centroid accurately for any polygon (hence any shape in SketchUp). It also provides the area (more for reference since SketchUp spits this out anyways) and the area moments Ix, Iy, Ixy. Please give this a try and let me know if you run into any usability, calculation or proper plugin programming issues. Some limitations: Shapes must be drawn on the ground (x-y plane) and calculation accuracy is limited by polygon accuracy. Plugin webpage (available soon): http://www.alexschreyer.net/projects/centroid-and-area-properties-plugin-for-sketchup/ plastic characteristics of cross sections are sometimes needed too... is it something that could be added to the plugin? because [anchor= goto=:1n1fsrz0]http://www.skpengineering.com[/anchor:1n1fsrz0] is not avalaible anymore

It's quite odd that Google hasn't pushed this more but maybe they are watching for a while to see how it works... Or they are just implementing this "routinely" now for all their online services... Or - and that's where my earlier comment came from - they are going to make this a major part of SU7 (direct synchronizing and versioning - and maybe other "social" features) and are waiting for an announcement there... Or maybe there's just an innovation-fatigue with Google where people just don't notice all the new features anymore...

Wow Alex, very clever. You know, I just bought a 10' USB cord for my mouse so I could sit back and walk my clients through a model allowing them to be closer to the screen. The Wiimote would have been much better for this and only about $8 more!