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* Implemented one single gloabel Lua VM for the entire CampVisApplication instead of one VM for each pipeline.
* The global Lua VM has a "pipelines" table/array, holding the pointers to each loaded pipeline
* ScriptingWidget support cycling through last executed commands via the arrow keys
* LuaVmState supports redirecting Lua's print() function to a custom one that uses tgt::Logmanager for printing (just as proof-of-concept). This shall later be extended to pass all Lua output to the scripting console.

With scripting enabled, the main window now has an additional scripting widget that allows to interact with a Lua VM. The current proof-of-concept implementation creates a Lua VM for every instantiated CAMPVis pipeline while the console just interacts with the first pipeline's one.
However, the Lua VM concept has to be reiterated later anyway. It may make more sense to have just a single central Lua VM for the entire application, which is shared by each pipeline.

Introducing nifty error texture in case that there is nothing to render. Updated copyimage.frag to use texture coordinates instead of viewport pixels.

Removed oblivious tgt::QtContextManager and merged functionality into tgt::GLCanvas and tgt::GlContextManager. Meanwhile, improved OpenGL context initialization and pipeline creation in CampvisApplication.

* Moving to Apache 2.0 license
* Updated AUTHORS.txt

Work on Issue #44: Removed GLContext interface and merged functionality into GlCanvas. Introducing abstract (Qt-free) tgt::GlContextManager interface, being implemented by tgt::QtContextManager. Further clean up of related code.

CampvisApplication manages multiple DataContainers, updated PipelineTreeWidget to show correct DataContainer/Pipeline/Processor hierarchy

Refactoring pipeline concept #4: (Almost) got rid of hard pipeline definition in campvis.cpp. Implemented console argument parsing in CampvisApplication dynamically adding the pipelines listed as arguments

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@520 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

When created for the first time, the transfer
function editor is added to the main window and
docked in its right docking area.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@505 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * Pipelines evaluate themselves
 * removed the PipelineEvaluator
 * adapted all demo pipelines except OpenCLPipeline

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@462 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@338 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@335 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@327 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@326 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * added CameraProperty::setWindowRatio()
 * improved OpenCL error reporting

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@257 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * fixed kisscl::CommandQueue destructor
 * documented OpenGLJobProcessor scheduling strategy

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@254 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * added (de)initialization of KissCL to TumVisApplication

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@243 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * added update_legal_header.py script for updating the legal header in all code files of the project
 * ran the file => all TUMVis source files now contain the legal header

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@231 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@230 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * elaborated checks in TumVisApplication
 * added AbstractPipeline.getName() and AbstractProcessor.getName()

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@204 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * introducing TumVisApplication for easy and straight-forward setup of pipelines, contexts, evaluators, etc.
 * VisualizationPipeline must not get its canvas during construction anymore

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@203 bb408c1c-ae56-11e1-83d9-df6b3e0c105e