BUG Clipping With 2 Points Sometimes Fails When Points Coincide on Separate Brush Edge

[JosiahJack]

System Information

TrenchBroom V2.1.0-RC4 on Windows 7

Expected Behavior

Click to add clipping point. Click to add 2nd point. Clipping plane appears. Hit enter to clip.

Steps to Reproduce

Create 2 clipping points on the face of a brush where the 2 points are directly on the edge of an adjacent unselected brush (e.g. clipping a wall at the same level as the floor right next to it to split the wall vertically, floor is partway up the wall). If you hide the floor brush or move the camera view inside the floor brush that isn't selected and then put clipping points in the exact same positions it works fine and generates a clipping plane. Adding a 3rd point always works if the first 2 fail.

[kduske]

@JosiahJack please provide a screenshot of the situation and attach a map containing only the participating brushes.

[ericwa]

Here's how I reproduce it:

1. add a wall and select it
   

2. place these two clip points:
   

   What's weird is I get some randomness; sometimes after placing the first 2 clip points you'll get the desired clip suggestion:
   

3. Placing the clip points higher up always works:
   
   clipbug.map.txt

[kduske]

Thanks! I'll look into this tomorrow.

[JosiahJack]

Exactly! What ericw posted. Doesn't seem to be dependent on the axis or the angle. What's odd is that if I drag one of the two points after clicking to place it down it still doesn't make a clip plane appear. I have to escape out or add a 3rd point.