I’m trying to intersect a mesh of land with a rectangular box in order to separate the face of the mesh in a perfectly rectangular area. I create a group that I placed over the land mesh (the big white box) and put that group inside the land mesh group. When I select “Intersect Faces > With Model” it draws NEARLY all the lines of the rectangular group except this specific corner.
I’ve tried a bunch of combinations but for some reason this particular part of the land mesh refuses to intersect the same as the rest of the mesh.
Any suggestions?
- Here’s where the white box and green mesh are intersecting.
- After the “Intersect Faces” option is applied, the new intersect lines seem to appear everywhere BUT this specific area which prevents me from separating the faces of the land mesh.
- With Hidden Geometry visible, you can see there are areas that simply don’t accept the new lines. They seem to be fine everywhere else.
Here’s a copy of the SKP file that I’m wrestling with in case anyone wants to dig in directly.
Box with Land Mass.skp (3.7 MB)
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What happens if you scale everything up by 100 or 1000 before intersecting?
The scale is already pretty significant (1,500 ft I believe) but what were you thinking that might accomplish?
Also, worth noting I tried “Draping” a flat plane on the land mesh and that left me with the same issue.
If the land consists of a very fine mesh, intersecting could cause problems due to SketchUp’s trouble to create tiny geometry.
It seems to me that tweenulzeven has given you the right answer, wilschroter.
Here’s why I think so.
First of all, I moved the Component 10AC and the Group Box to the top level.
Then I intersected the Box with AC10 and got the same result as you did.
Then I intersected AC10 with the Box and got the same result as you did. Selecting AC10 first meant it was a two hour wait for the result.
Then I ran the “CleanUp3” Validity Check which also runs SketchUp’s native “Fix Problems” routine.
As you can see, this also took nearly two hours.
Finally, I intersected the Box with AC10 again. It’s fixed the corner, but there are still gaps elsewhere in the line of intersection.
