OpenGL Extension Viewer

What's new in this version:

New Features and Improvements:
- 3D View: Create a true 3D sphere symbol
- 3D View: display drillhole layers in the 3D view to show trajectories, paths, interval data, point data, and labels/leader lines
- Alpha shape: create a tighter boundary around data points (e.g. convex or concave hull) in geoprocessing, Grid Data and Grid from Contours
- Drillhole Manager stores and displays all the drillhole data
- Grid Math and Grid Volume: calculations can use grids that have different sizes (different numbers of rows and columns)
- Grid Math: apply math to XY values, not row column location so the calculations work on grids offset from each other or in different coordinate systems
- Grids: easily create isopach maps (true stratigraphic thickness) or isochore maps (true vertical thickness)
- New Layer Type: 2D Drillhole layer shows drillhole locations, deviation paths and bottom hole location

Fixed:
- 3D PDF export: lat/lon maps appear dark and blocky
- 3D View: Antialiasing appears to be applied backwards for text
- 3D View: Base(raster) layer not displayed when map is transformed with X Scale or Y Scale
- Attribute Table: undo/redo leads to error or crash when left open after Undo map creation
- Crash in OpenGL driver when use trackball with surface map
- Drop shadow: turns background black when background opacity is not 0 when using math text instructions ( markup)
- Internal Error changing Z axis length (axis.cpp)
- Internal Error creating unique ID for node (PlotDoc.cpp)
- Internal Error when gridding data with Kriging (KrigingGridder.cpp)
- Internal Error when importing multiple grids as Color Relief due to nan blank value (iogrid.cpp)
- Internal Error when Redo with Move To Layer command (SceneList.cpp)
- Text Editor: Including math text instructions ( markup) makes white text turn black when exporting to image formats