OpenSCAD User Manual/WIP/Inputdriver

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Introduction[edit]

The inputdriver is currently part of the current development snapshots and nightly builds.

The inputdriver allows a user the use of things like a gamepad or a 3D-Mouse in OpenSCAD.

Currently, the following drivers are in development:

  • HIDAPI - Used on MacOS and Windows - needs the USB IDs / it works on Linux too, but needs additional privileges, so it's not ideal for the user
  • Joystick driver - uses the Linux joystick device (currently fixed /dev/input/js0)
  • SpaceNav driver - using the spacenavd daemon
  • DBus driver - Linux only / not for actual devices but for remote control
  • QGamepad - used for Cross-platform joystick support - This seems to require some additional configuration on Qt level currently, so it needs some more work to make it easy to use

The default axes mapping is for 3D-mices.

How to try it out[edit]

The inputdriver is currently part of the current development snapshots and nightly builds.

Therefor, they can be found here: http://www.openscad.org/downloads.html#snapshots

Joystick and gamepads[edit]

linux[edit]

Almost any controller that your Linux computer recognizes should work

The JoystickInputDriver is using the device /dev/input/js0.

Under Ubuntu Linux, you need the packet joystick for joystick support.

QGamepad can also be used, but is not recommended as the QGamepad Driver makes assumptions about the Gamepad that might not be true.

Windows[edit]

QGamepad works well with XBox 360 controllers

Under Windows, you can use QGamepad as a driver. QGamepad works best with an XBox 360 controller.

3D-Mouse[edit]

Linux[edit]

On Linux, the easiest way with the Space Mouse Wireless is interestingly to go though the Joystick driver which is normally enabled on most systems.

Spacenav[edit]

Spacenav is also supported. http://spacenav.sourceforge.net/ https://wiki.archlinux.org/index.php/3D_Mouse#Open_Source_Drivers

sudo apt-get spacenavd

On debian:

sudo  apt install libspnavd-dev 

(requires restart)

HIDAPI[edit]

For using the hidapi, you can run openscad with root privileges. However, this is not recommend, but maybe helpful for temporary trouble shooting.

Much better is to figure out which vendor id and product id your device has and add a udev rule. To figure out which vendor and product id your product has, you can use lusb.

How the relevant line of lsusb may look like:

Bus 002 Device 006: ID 046d:c627 Logitech, Inc. 3Dconnexion Space Explorer 3D Mouse

Some hints:

  * https://stackoverflow.com/questions/3738173/why-does-pyusb-libusb-require-root-sudo-permissions-on-linux/32022908#32022908

Windows[edit]

OpenSCAD interacts directly with the 3D Mouse using the HIDAPI.

Therefore, the driver from the device manufacturer is not required. If the driver of the device manufacturer is installed, the driver has to be stopped, so that OpenSCAD can claim the device.

There are different ways to stop the driver. In your start menu you should have a folder 3Dconnexion and in there "Stop Driver".

You can also try

"C:\Program Files\3Dconnexion\3DxWare\3DxWinCore64\3DxService.exe" -shutdown

Mac OS[edit]

As with other platforms, you have to disable the native 3DConnexion drivers completely, as OpenSCAD does not use them.

To enable the built-in driver for the SpaceMouse, go to Preferences → Axes, turn on the HIDAPI setting, and restart OpenSCAD.

The following devices have been tested and are known to work with OpenSCAD on MacOS Mohave:

  • SpaceMouse Compact (USB)
  • SpaceMouse Wireless

DBus[edit]

The D-Bus driver can be used for remote controlling OpenSCAD. This is mainly intended for programmers. It can for example be used to write a custom input driver.

Debug and testing[edit]

For debugging and testing, D-Feet can be used. OpenSCAD can be found on the Session Bus under org.openscad.OpenSCAD.

qdbus is NOT recommended, as it has issues with some of the more complex data structures.

Example[edit]

An example for QT/C++ can be found under this page.

Camera System[edit]

Note that OpenSCAD's camera behavior and system does not operate in a standard way. Via DBus, you are directly interacting with OpenSCAD's camera. Note that the camera system and thus this is interface could be refactored at some point.

Actions[edit]

Please note that the actions exposed Via dbus are mostly the ones from the Menu Bar of OpenSCAD. Keep in mind, that the menu bar might change at some point and that compatibility with the dbus driver is not of concern.

FAQ[edit]

Which button is which?[edit]

Open the preferences, then go to the button tab then press the button you want to assign. The text next to the relevant ComboBox will be shown in red, bold text.

View is drifting[edit]

If your view is drifting, please re-calibrate the neutral position and deadzone of your input device. This can be done within OpenSCAD or with the tools of the operating system.

Where are my settings stored?[edit]

See this page.

Y+Viewport-rel-translation (VRT) Channel is not responding to input[edit]

You are in orthogonal view. Please change it to perspective to see what it does. Or look in the bottom left corner, where translate = changes. This is not a bug, this is a very specific feature. When you map zoom to one axis and Y+Viewport-rel-translation to an other while in perspective view, you should get the vertigo effect. Most users will therefor use zoom as it works in both orthogonal and perspective. Before you wonder why you can map two axis to zoom: Game controllers have two shoulder buttons.

Yes, this has little to no real world use, but the inputdriver is about giving as much control to the user as possible.