Simplify complex roof

[Anonymous]

I have a complex roof structure that has been created by building a mesh, then using the Mesh to Roof function.

I want to simplify the roof slightly. It has several places where there are two roofs that are on very subtly different planes, that could become one roof plane, e.g. in the attached image, the 'A's could become one roof, as could the 'B's and 'C's.

How can I achieve this without changing the heights of the perimeter of the roof?

Thanks.

[Anonymous]

You can (for example) delete the top "A" section of roof, then use the normal editing technique of selecting roof "B", then CMD-click (CTRL-click for Windows) the edge of remaining roof "A" which will extend it to where it meets the plane of roof "B".

Rinse and repeat.

[Anonymous]

Thanks Stuart, but this changes the roof to the attached.

Glenn

[Anonymous]

Add a new node to the open edge of the remaining roof "A" and stretch it up near the corner it should go to (top right of "B"). Then perform the selection - CMD-click operations as described earlier. See if that helps.

[Anonymous]

Thanks Stuart, but I think I need to explain more clearly.

In the attached, the blue circled points must remain fixed in height and location (X, Y and Z). I want to move the red circled point down slightly so that roofs A and B become on the same plane. The pivot line of roof A is not parallel to the edge, the dashed blue line indicates the pivot line.

To move the red point down, I need to move the pivot line, but how do I figure out where to move it to without guessing?

Thanks,

Glenn

[Anonymous]

Have you tried using wireframe in elevation, that way you should stand more chance of moving one roof plane to another with a fixed point.

[Barry Kelly]

You can place a new single roof plane in the 3D window using the 3 blue circle nodes as the first three points of the roof.
This will define the slope and pivot line - then you define the other nodes of the roof plan which of course you can edit as you like.
Just be aware the first 3 points you pick will define the underside surface of the roof - not the top surface.

Barry.

[Anonymous]

Barry,

Perfect, thanks!

Glenn