Lars Petersen, Senior Applications Engineer at Hawk Ridge Systems, has over 12 year experience in SolidWorks 3D CAD. He is a Certified SolidWorks Professional and Instructor, among other technical SolidWorks certifications.
Wow! Occlusion, that’s cool! …What is it?
Occlusion- to Occlude …D’oh! Lets try again… Occlude (ə-klūd') v.– 1. To close, shut, or stop up 2. To shut in, out or off.
SolidWorks 2012 has introduced a new setting to the already cool RealView, Ambient Occlusion. Ambient Occlusion is blocking some of the ambient light in your SolidWorks scene. Dang these 50¢ Words… back to the web… Ambient ( ăm ' bē-ənt ) adj. – Surrounding or encircling.
In SolidWorks the ambient light basically comes from everywhere. It lights up the model evenly from all directions. The reason a directional light is always around is to provide a shadow so you brain thinks it’s looking at a 3-D model. RealView came along and added some pop with real time reflections. But something was still off about that magic everywhere light. That was until now.

Now the ambient light gets blocked out by geometry. See how the edge of the watch face has a shadow all the way around, really giving it that illusion of depth. Also the parabolic shape to the inside of the watch cover seems less washed out and just more realistic then it does with the RealView rendering. Keep in mind these illustrations are just screen captures. What would have taken a bit of time to set up and render just a few years ago is just now just the on screen view.
Try it and see, load up 2012, and open an assembly. Make sure RealView and Ambient Occlusion are turned on in your heads up display. And presto a cool quasi rendering in no time and then go to the View, Screen Capture, Image Capture.

Now you’ve got a nice looking picture of your design on your clipboard. Go ahead and paste it into your Word Document, or Photoshop, or whatever. You don’t have to play with lights or preview windows or nuttin’. Simple rendering for the masses at last!
And it’s different than just a rendering it’s a brand new choice, SolidWorks has always been for technical drawings, the render package with SolidWorks Professional (PhotoWorks and now PhotoView 360) has always tried for photo realistic images. This ambient occlusion stuff gives you more of a technical Illustration.

Notice the last shot again is just a screen capture of the same camera view the rendering is using. The last view has an almost Anime or Heavy Metal Magazine look to it as if it was painted by an artist. As with any new technology it does have some growing pains. It does take a second or two to recalculate when rotating the view. It seems to slow moving components in an assembly if the tool is on during the design process. In Beta I also noticed, especially when opening the file, the graphic display would have ghosts or colors blacked out. Luckily each of these was easily solved with a simple rebuild.

All in all I have to say I really, really like new graphic setting. Especially since I create a lot of the SolidWorks imagery for our website. Instead of having to turn on PhotoView 360 and spend an hour tinkering with all the settings I can just do a print screen and get a professional quality image in literally seconds.