20,741
edits
Howto:Use a Camera View in an Instrument: Difference between revisions
Jump to navigation
Jump to search
m
Howto:Use a Camera View in an Instrument (view source)
Revision as of 15:18, 22 February 2012
, 22 February 2012→Objective
m (→Related) |
m (→Objective) |
||
| Line 1: | Line 1: | ||
=Objective= | =Objective= | ||
To create a 2D instrument which shows a camera view. | To create a 2D instrument which shows a camera view. Write C++ code, preferably an instrument that renders a Camera View (i.e. from the property tree) to a texture. | ||
* | The steps involved in creating such an instrument would be:* | ||
* | |||
* create a new topic branch: [[FlightGear and Git#Local_Branch]] | |||
* Add a new set of cxx/hxx files to $FG_SRC/Instrumentation/ (e.g. camera-texture.cxx and camera-texture.hxx): to get started quickly, just copy and customize the gyro.* files | |||
* implement the SGSubsystem interface for the new subsystem [http://simgear.sourceforge.net/doxygen/classSGSubsystem.html] | |||
* add the new files to the CMake build system: [[Developing using CMake#Adding_new_files_to_the_build]] | |||
* add the new subsystem to the instrument_mgr (FGInstrumentMgr::build method)[http://gitorious.org/fg/flightgear/blobs/next/src/Instrumentation/instrument_mgr.cxx#line127] | |||
* implement the interface for the od_gauge instrument [http://gitorious.org/fg/flightgear/blobs/next/src/Instrumentation/od_gauge.cxx] to dynamically create a texture and display update it as a cockpit instrument | |||
* implement SGPropertyChangeListener to process property tree events and updates [http://simgear.sourceforge.net/doxygen/classSGPropertyChangeListener.html] | |||
* Render a property-driven camera view to the created texture (Zan has already code doing this sort of thing [http://flightgear.org/forums/viewtopic.php?f=6&t=13798]) | |||
* Write an XML 2D Instrument file that displays the texture | |||