NAME

       loch — Therion model viewer

SYNOPSIS

       loch [FILE]

DESCRIPTION

       This manual page documents loch, which is part of the therion-viewer package.

       loch  is  a  3D viewer which displays .lox files produced by therion and allows them to be
       examined.

OPTIONS

       loch optionally takes a .lox, Survex .3d or Compass .plt file to open.

BASIC CONTROL

       Key and Mouse Controls

       Function        Mouse action                                                   Key
       Zoom & Rotate   Left click + drag
       Zoom only       Left click + drag up/down, then hold left and click right      Ctrl + Up/Down
       Rotate only     Left click + drag left/right, then hold left and click right   Left/Right
       Pan             Right click + drag                                             Shift + Arrows
       Tilt            Middle (wheel) click + drag  or wheel rotate                   Up/Down
       Full screen     Left double click F11
       Context menu    Right click

       If continuous rotation is turned on, then rotation mouse movements  change  the  speed  or
       direction  of  rotation.  If  rotation  is  locked,  then rotation mouse movements have no
       effect.

OFF SCREEN RENDERING

       Loch is able to render large bitmaps that can be afterwards post  processed  and  printed.
       Bitmaps  can  be  exported in PDF, PNG or BMP formats. Configuration of export is done via
       the Rendering setup dialog.  You can set the following features:

       Size and Scaling

       Screen shot: Screen copy will be saved into a file with no other changes.

       Image width:  The screen image will be exported with the specified width.

       Image height: The screen image will be exported with the specified height.

       Scale: The screen image will be exported with the specified scale.

       Image options

       Rendering resolution: Resolution of the image file used  when  image  size  or  scale  are
       specified.

       Image size: Image size in pixels and uncompressed bytes calculated from previous settings.

       White background: Force white background in exported image.

KNOWN BUGS

       Sometimes  empty  rectangles appear in off screen rendered file.  Changing the window size
       usually helps.

       * Crashes have been observed on intel graphics cards unless the
        texture initialisations are removed in the code.

       * Stereo mode does not work correctly on some graphics adapters.

       * This help does not work.

SEE ALSO

       therion(1), xtherion(1)

       For full information see the Therion Manual in /usr/share/doc/therion-doc/thbook.pdf which
       describes therion-viewer and its use in detail.

AUTHOR

       This manual page was adapted from existing docs by Wookey wookey@debian.org for the Debian
       system (but may be used by others).  Permission is  granted  to  copy,  distribute  and/or
       modify  this  document under the terms of the GNU General Public Licence, Version 2 or any
       later version published by the Free Software Foundation.

                                                                                       THERION(1)