Viewing Analysis of Camera

I am working on a project that I want to analysis the views towards an object and its surrounding environment. I have set the camera in horster, and I want to have a 2d of what is shown in the viewport camera. Then I reuse those 2d curve and line data of the view and do some analysis of area percentage calculations in grasshopper again.

I have a difficulty in projecting or transforming the viewport into 2d curves data which I want to re-input into gh for analysis. Is there any idea?

(For example, I have a lot of houses sit besides the sea. I want to have several different cameras viewing from the house to the sea. By calculating how much area of the sea is being seen by the different camera, I can conclude to a solution of which house has a better sea view.)

Replies to This Discussion

Permalink Reply by Danny Boyes on October 26, 2011 at 5:05am

If you didn't have to have it in 3D you could use [IsoVist].

Alternatively I have an idea for projecting the data onto a camera plan but I haven't tried it yet.

Permalink Reply by zlyx on October 26, 2011 at 8:36am

Attachments:

isovistSeaView1.3dm, 31 KB
isovistSeaView1.gh, 7 KB

Permalink Reply by Danny Boyes on October 26, 2011 at 8:52am

Here with explanation

Attachments:

isovistexample_geometry.3dm, 60 KB
isovistexample.gh, 5 KB

Permalink Reply by zlyx on October 26, 2011 at 2:10pm

thank

Permalink Reply by Kenneth cheung on October 26, 2011 at 10:10pm

Thanks. But I wonder is there a 3d version of the isovist? I think It would be really helpful.

Permalink Reply by Martin Dembski on October 27, 2011 at 12:29am

Hi Kenneth,

have a look on this link.

Andrew Heumann created some time ago a 3D isovist version for Grasshopper.

Best,

Martin.

Permalink Reply by Kenneth cheung on October 27, 2011 at 2:05am

Hi Martin,

This is good. I find a lot other useful resources there. Thanks!

Kenneth

Permalink Reply by Kenneth cheung on October 26, 2011 at 7:49am

Sorry to mention that I wish it to be in 3D. I have made a script but I dunno if I have the same idea as yours. By using horster, I make a plane that is always facing the camera and project whatever between the camera and the plane onto the plane. However, I got some problem with the projection which it cant help me calculate the area projected correctly. And I cannot get the projection to be correct at some position. Hope you may take a look of it.

Permalink Reply by Kenneth cheung on October 26, 2011 at 7:51am

For reference

Attachments: