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* Removed CameraProperty, CameraPropertyWidget and TrackballNavigationEventListener
* replaces all known occurrences of the above three with the new TrackballCameraProvider processor
* introduced TrackballCameraProvider::reinitializeCamera()

refs #141

refs #386

refs #386

Moved AbstractJob and OpenGLJobProcessor from campvis-core to tgt and adapted and cleaned up all necessary includes/references.

Removed all occasions where references to DataHandles were used, since especially their use in signals may lead to segfaults or other undesired behavior.

closes #546
closes #37

* Implemented trackball navigation interaction for rendered geometries
* Implemented correct rendering of textures with correct aspect ration (no longer weirdly stretched textures)
* removed obsolete (because redundant) renderFullscreen option

refs #546
refs #37

* DataContainerInspectorCanvas uses the GeometryRenderer processor to render geometry
* DataContainerInspectorCanvas::_textures now uses DataHandle to improve thread safety avoid segfaults
* replaced some function calls with Qt signals to loose coupling
* removed obsolete fields and methods

refs #546

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

* Rearranged DataContainerInspectorWidget layout to use less space
* Added option to render custom channels in DataContainerInspectorCanvas

* Moving to Apache 2.0 license
* Updated AUTHORS.txt

+ Using passthrough.vert and geometryrenderer.frag instead of the meshGeometryRenderer.vert and meshgeometryrenderer.frag
+ adding comments for the destroy function of GeometryTextureInfo and why to use it.
+ Change the depth buffer size changing part of Paint() function in datacontainerinspectorcanvas checking part.
+ Delete the commented codes which are not necessary.
+ Fix the opening braces and removing the redundant parts and only for debugging parts.
+ DVRVis and volumerendererdemo default file is revereted to the original locations.
+ Revert the shaders to the original ones.
+ StartMouseDrag and EndMouseDrag functions of the trackball are replaced with mousePress and mouseRelease.

- Delete the meshGeometryRenderer.vert and meshgeometryrenderer.frag.

+ Moving the geomteryshader vertex and fragment shader to application folder as they belong to it.
+ Removing unndeeded shader code.
+ Opening braces convention is considered for datacontainerinspectorcanvas.cpp and datacontainerinspectorcanvas.h  also.
+ Reusing textues for color and depth buffers instead of creating and deleting them.
+ adding gettrackball function to trackball event handler.
+ modifying resetcontent, mouse events in datacontainerinspectorcanvas class
+ using one depth buffer for datacontainerinspectorcanvas instead of one for every color buffer
+ using one frame buffer for whole datacontainerinspectorcanvas instead of one for every frame

Bugs:
- Invalid Enumerator during the rendering mesh
- Problems in deleting the generated color and depth textures.
- Depth darkening still has problem :(

+ Adding the functionality to rotate the rendered geomtery objects
+ Adding the functionality to set the rendered mesh by the user

- Still there are bugs with shader that I cannot set the color of the rendered mesh in the shader

# Adding functionality to render the mesh in the DataContainerInspectorCanvas and camera rotating around the object

# Fixing the bugs of the Color Window in the Canvas

# use 4 spaces instead of tab
# use QString operations instead of unsafe C String operations
# use static_cast casting instead of C casting

# Take back the updateInfoWidget to its previous position and add a new updateColor function to just update the Color in the label.

# Add the ability to read the color when hovering the mouse into the canvas and dragging the right mouse button.

# Make a pointer from datacontainerinspectorwidget into datacontainerinspectorcanvas, as we need to call the updateInfoWidget() after updating the color.

# Make the updateInfoWidget() as public to be able to call it.

# Add the Capability to look up the color under the mouse button when one of the mouse buttons is pressed.

# use 4 spaces instead of tab
# use QString operations instead of unsafe C String operations
# use static_cast casting instead of C casting

# Take back the updateInfoWidget to its previous position and add a new updateColor function to just update the Color in the label.

# Add the ability to read the color when hovering the mouse into the canvas and dragging the right mouse button.

# Make a pointer from datacontainerinspectorwidget into datacontainerinspectorcanvas, as we need to call the updateInfoWidget() after updating the color.

# Make the updateInfoWidget() as public to be able to call it.

# Add the Capability to look up the color under the mouse button when one of the mouse buttons is pressed.

QtThreadedCanvas used to ignore all repaint events send to it by Qt in
order to avoid problems with threading. As a result, however, it would
become blank when docked/undocked, and display garbage in those of its
regions that some other widgets have moved over.

To fix this, the API of TGT's Painter class had to be slightly modified
and now mirrors that of Canvas with regard to painting-related
operations. The paint method has been made protected; it's supposed to
implement the painting logic and shouldn't be called directly. A public
repaint method has been introduced to let canvases notify their
associated painters that they need to be redrawn. The default
implementation simply calls paint() immediately; threaded painters,
however, override it to schedule render jobs that run in separate
threads.

All existing threaded painters have been updated to reduce the
visibility of their paint methods and provide public repaint functions.
Consequently, QtThreadedCanvas can now properly handle repaint events by
delegating to its associated painter's repaint method.

 * added tgt::Texture::isDepthTexture()
 * added more color conversions and updated AdvancedUsFusion processor, L*a*b*/L*C*H* still not working correctly...

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@473 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@454 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@449 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

#37: further work on improving the DataContainerInspectorWidget debugging features, now offering automatic updates, transfer functions and more

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@437 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@436 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@404 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@399 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@354 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