basic parse of .png output filename. basic command line option "--render"
modify qmake buildfile, move offscreen rendering to main src directory
add files removed from test path
get rid of compiler error by moving Eigen::Vector3d to end of class def
move imageutils platform stuff to qmake build file mv system-gl. fix gcc warning
add system-gl.cc
add lodepng.cpp, fix compiler warnings, fix qmake buildfile
move png export to sep file to make compilation time bearable. expand stubs.
basic bootup of offscreen opengl context
move bounding box helper functions to linalg. put bbox code in export_png
fix bounding box function definition errors
stubs to enable passing ostream to png-writing functions
undo experiment with object orientation
add ostream to Context. improve error checking. fix indents
refactor to remove duplicate code
refactor to reduce duplicate code
refactor to reduce duplicate code. enable ostream save from OffscreenView
commit files created during refactor
integrate gui cmdline into test framework
add gui-cmdlind based output tests (for cgal)