moved the "Dimension" class to the DropCutter to avoid circular imports under some circumstances (thanks to Dan Heeks)


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@207 bbaffbd6-741e-11dd-a85d-61de82d9cad9

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@168 bbaffbd6-741e-11dd-a85d-61de82d9cad9

prevent the DropCutter from going down to zero, if the model exceeds the height of the bounding box (introduced by the new dropcutter code)
 - this (obviously) violates the boundary box limits


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@166 bbaffbd6-741e-11dd-a85d-61de82d9cad9

changed the gcode exporter code to allow a specific definition of the safety height (instead of previous "max(safetyheight, homeheight, startz)")
moved "startz" offset (based on the configured measurement unit) from SimpleGCodeExporter to the Gui code to allow more control
slight beautification of the gcode exporter code (added spaces between operators and after commas - according to PEP 8)


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@165 bbaffbd6-741e-11dd-a85d-61de82d9cad9

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 fixed remaining reference to INFINITE (now: safe height)


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@157 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 make sure that the path generators never get stuck in in infinite loop caused by floating point inaccuracies
 define a maximum recursion depth (20) for the PushCutter algorithm (i.e. maximum precision = 1/(1^20) of bounding box width)


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@156 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 use a calculated "safe height" instead of "utils.INIFINITE" for a boundary limit failure in DropCutter (otherwise it looks like a bug)
  - issue a warning once


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@154 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 implemented ODE support for the PushCutter


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@152 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 simplified some cutter code
 moved "Dimension" to the base of PathGenerator


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@151 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 make sure that the toolpath always covers the outermost bounding box limit, even if the step width is not an integer divider of the bounding dimension


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@142 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 ODE can be enabled via GUI and is detected automatically
 fixed closing of "save file" dialog via ESC


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@135 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 visualization is configurable via the GUI
 fixed draw_callback for PushCutter


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@132 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 visualize cutter movement during calculation
 use const definitions for drawing colors


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@131 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 implement the dropcutter code using the ODE collision detection


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@130 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 revert experimental ODE patch for DropCutter


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@125 bbaffbd6-741e-11dd-a85d-61de82d9cad9

 replace the complex triangle testing with ODE's collision check


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@106 bbaffbd6-741e-11dd-a85d-61de82d9cad9

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