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Bug #464

VAB Cursor Position Misaligned when Shift Dragging

Added by zerke2001 about 11 years ago. Updated over 7 years ago.

Status:
Closed
Severity:
Low
Assignee:
-
Category:
Controls and UI
Target version:
-
Start date:
03/19/2013
% Done:

100%

Version:
Platform:
Any
Expansion:
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

What happens: There appears to be a misalignment with the cursor position when shift dragging your vehicle. Especially after you have positioned the camera at an angle looking down at the base of the vehicle while zoomed in. At that point the vehicle snaps into the ground and then the misalignment with the cursor is permanent at any viewing angle. It is even possible to position your vehicle outside of the VAB permanently.

How to reproduce:
Step 1: For simplicity, create a new vehicle and place at least 2 FL-T800 Fuel Tanks under it.
Step 2: Zoom in on the bottom of the tank so that almost none of the tank above is visible.
Step 3: Tilt the camera up so that the view is looking down on the bottom tank.
Step 4: Shift+Left Click and drag the vehicle.

You will notice that the vehicle snaps into the ground and the cursor position when Shift+Dragging thereafter is permanently misaligned with the original position that was chosen.

See my YouTube video for reference. I only use the Shift+Drag and zoom.
http://youtu.be/8zuTYqsQWJU

Vehicle Outside VAB (Really Small).png (2.24 MB) Vehicle Outside VAB (Really Small).png Vehicle very far Outside VAB zerke2001, 03/19/2013 08:23 PM
461

History

#2 Updated by zerke2001 about 11 years ago

  • Version changed from 0.19 to 0.19.1

#3 Updated by zerke2001 about 11 years ago

I just tested this with resolution settings at 1024x768, 1280x960 and in windowed mode, but this issue still happens.

I also tested similar behavior in the Airplane Hanger. I notice that if you built this vehicle 3 tanks long in the Hanger and looked down the 3 tanks and select the furthest tank from you to drag horizontally, there is an issue as well. However, clicking the closest tank does not have the same effect.

#4 Updated by gloowa about 11 years ago

  • Platform Any added
  • Platform deleted (Windows)

I'm not sure, but i think that this has nothing to do with shift-drag.

Try moving any part when looking vertically down - try to move mouse up and down - the issue presents itself when vertical part movement plane intersects with ground plane - minimal cursor position changes cause part to move huge distances, most often way off build-pad and off screen.

#5 Updated by zerke2001 about 11 years ago

I see what you mean about the ground plane intersecting thing. That could be a separate issue all by itself I suppose. In fact, now it is! http://bugs.kerbalspaceprogram.com/issues/483

Anyways, this issue is different from that. I will present even simpler steps to reproduce this issue.

How to reproduce:
Step 1: For simplicity, create a new vehicle and place at least 3 FL-T800 Fuel Tanks under it.
Step 2: Tilt the camera up so that the viewing angle is looking somewhat down on the build-pad.
Step 3: Shift-Click and drag the bottom tank up/down and left/right

You will notice that the vessel does not follow the cursor position. Dragging left/right further exaggerates this issue.

Notes:
A higher angle of vertical viewing, the more noticeable the problem.
This problem does not happen when Shift-Click and dragging either the top tank or even the command unit at any viewing angle.

#6 Updated by Squelch over 8 years ago

  • Status changed from New to Resolved
  • % Done changed from 0 to 100

The editor now has bounds so that the vessel root cannot be placed beyond walls and door threshold. The observed behaviour is no longer possible to reproduce, and looks like it has been patched out since this report.

#7 Updated by TriggerAu over 7 years ago

  • Status changed from Resolved to Closed

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