Archwindow at a corner

[stefansiggemann]

Hi,

I have now tested various options, but I am not satisfied with the last workflow.

1st attempt used a spline for the basic shape, then an archspline for the rounding of the window, extruded this connected and then with a FFD unfortunately did not work for me the rounding disfigured at the corners.

2nd attempt made the window in half then rotated to the appropriate angle and then symmetry, but I don't like the end result.

I'm trying something like the reference picture 02 and looking for a clean and efficient way, maybe someone has an idea.

Best regards and thx

[wernienst]

Your image 01.jpg looks ok to me. The wall just needs re-smoothing.

Anyway, here is my attempt:

1. Create right half of the arch window block. Its depth must be greater than its width.

    Move the pivot point to the left front edge.

2. Mirror-copy the block, select the mirrored part and detach it as a new object.

3. Rotate it by the desired amount (90° in my case). Add a Boolean modifier and intersect it with the other part.

    If the operation fails, do it the other way around. Check for open edges.

4. Move it to the wall so that the corner edges almost match (not exactly; the block should stand off the wall a tiny bit.

5. Add a Boolean modifier to the wall and subtract the block.

By the way, the arch window in your reference image sits on a plain surface, not a corner. See the left example:

[wernienst]

Oh-oh, I forgot an important step if the corner angle is less than 90°!

2a. Extrude the left face.

2b. Mirror-copy the object.

3. Rotate it (60° in this case).

3a. Do the Boolean intersection.