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History of Program Changes and Enhancements

V2.9.xx Development Releases

V2.9.9 Current Development Release

Note! V2.9.9 includes a major rework of the internal data structures and large parts of the program have been rewritten. These changes allow for more advanced features like tabs and ramping which have been implemented in this release. The data file format has changed and while previous formats can be read, once saved in the new format, cannot be opened by earlier versions.
Check the D2nc yahoo group for bug reports and release status! Thanks to a small group of beta testers, this version has had one of the longest and thorough test cycles before release.
Added pocketing of any arbitrary shape. The step over can be set as a percentage of the tool diameter. If a closed chain or chains are selected then only the selected chains will be pocketed. If nothing is selected all closed chains will be pocketed. Nested pockets and islands are not supported. Current support is for monolithic pockets only.
Added new panel for contour operation in the Path tab which replaces the centerline operation. This panel contains a separate opengl graphics window for managing local shapes.
Added ability to set the contour step to represent; 1) the size of the step is the default setting where each step is the entered size with a final step any remainder required for full depth. 2) the max size of the step where all steps will be equal in size but will not exceed the entered value, and 3) the number of steps where the step value equals the full depth / nr of steps.
Added step narration below the step type which details how the cut will be made. The narration describes how the cut will be performed.
Added global and local shapes to the new contour panel. Global shapes are effectively pass thru geometry where the whole source shape is used to perform the machining operation. Local shapes allow for sub-shapes or selected geometry from within a shape to be added to the machine queue. No longer is it be necessary to separate out operations into different source shapes to create a machine queue entry.
Added ramping which allows the plunge to occur while contouring. For closed chains the ramped area is removed as part of the last pass. For open shapes the ramp cut is bidirectional with the tool retracing back to the start point after the ramp and then continuing the normal contour forwards.
Added tabs to allow the retention of parts in the base stock material after cutout. The number, width and height of the tabs can be specified. The tab height is independent of the step size and can be a fraction of the step or cover multiple steps. The position of the tabs are automatic distributed evenly along the chain. A future enhance may allow for manual repositioning of individual tabs.
Added DXF import progress bar to indicate elapsed and remaining import time.
Added a SDL variable value trace dialog which is invoked with a Control-t in SDL entry.
Added additional support for comma delimited decimal locales.
Added reflow option to modify panel which allows for the re-optimization of shapes.
Added default button to Option -> Settings -> DXF panel for tolerance value.
Changed action when missing tool table entry found from deleting a machine queue entry to converting it to use tool 0 using the missing tools diameter
Changed all single element circle geometry to be represented by two semi circles.
Changed path tab to preselect the last shape being worked on, if its a valid shape.
Changed the source selection of CAM to read CAD which better describes the source of DXF files and other file types in the future.
Changed G41/G42 to legacy support as native offsetting is preferred over these options.
Improved DXF file import time. At least twice as fast as before.
Fixed DXF import of polylines with a single vertex representing a point which caused subscript out of range errors. The single vertex polyline is ignored.
Fixed DXF import of closed polylines that are seen as open in some cases. Group code 70 = 1.
Fixed DXF import of ARC entities that were specified with a non-default extrusion direction.
Fixed mirror and reflect to include lines created with option 1 of the J and W commands.
Fixed PI() function producing "Non numeric value in formula" error.
Fixed bug in optimization where the next open point was not selected correctly causing unnecessary tool lifts in some cases.
Fixed the mouse move drag to be closer to a 1:1 ratio.
Fixed problem with marquee select activating while zooming.
Fixed marquee select to work in all directions and not just top left to bottom right.
Fixed marquee select while dragging rotation point.
Fixed the problem in comma decimal locales of the dropped fraction that was previously fixed and reintroduced in the last version 2.9.8

Known issues

Offset of shapes containing three consecutive segments whose combined length is less than the offset distance (tool radius) may produce inconsistent results.
DXF entities not in the WCS (World Coordinate System) using group codes 210,220 and 230 are currently not supported.

V2.9.8

Changed size of selection hotspot. Increased from 4x4 to a 6x8 pixel matrix which allows the mouse pointer can be less precisely positioned when selecting objects.
Fixed problem where the bottom portion of the screen is cutoff on some systems.
Fixed key selection method added in v2.0.2 that was disabled in V2.9.0, In addition the up and down arrow keys are used for selecting adjacent chains or elements.
Improved CAD shape optimization routines for imported shapes.

V2.9.7

Added persistent window size and position. When the D2nc window is resized or positioned it will always open at that size and position until changed.
Added additional diagnostic information to error.log file for file save operations.
Added Wizard - MILL - Multi - NEMA17 (by Hamilton Elliott).
Added Wizard - MILL - Multi - NEMA23 (by Hamilton Elliott).
Added Wizard - MILL - Multi - NEMA34 (by Hamilton Elliott).
Changed SDL shape closer (&) to work even if at the origin point of the shape.
Changed resize minimum height to 500 pixels to allow a 800x600 resolution to be usable.
Fixed pop up error during parsing of incomplete formulas with a notification in the status line.

V2.9.6

Fixed issue with tool table entry having a 0% plunge rate entered. A 0% plunge will now default to 50% of calculated feed.
Fixed errors caused by editing a machine queue entry that used a tool from the tool table (nonzero tool) that occurred under certain conditions.
Fixed installer to set full permissions on the database file required by the guest account when accessing the DB using ADO on Windows 7.
Fixed heading indicator display missing on resize.
Fixed direction arrows display missing after resize.
Fixed background color default to black after resize.
Fixed background color setting after program restart.
Fixed memory leak causing a crash after excessive window resizing.
Fixed crash when trying to resize window smaller that program permits on some systems.
Fixed error during add to tool table if nonnumeric values entered in numeric fields.
Renamed CAM Arrange buttons "Import" and "Export" to "Get From" and "Send To". As their function is to combine and split elements between shapes, the new names better describe their purpose.

V2.9.5

Added resizing to the main D2nc window along with minimize and maximize. The resized window cannot be made smaller that the default size. The plot area is scaled while the input area is pinned to the bottom.
Added ability to set the top of the material to a value other than zero at the operation level for Centerline and G41/G42 offsetting. The default value is zero which indicates the top of the material. A positive or negative value entered will be taken as a negative value which is below the top of the material. A value greater than full depth will produce a single cut at depth.
Added a substitution tag <CTOOL> in the Settings G-code tab for the Custom Gcode block ‘Queue Entry Start’. This tag will be replaced by the current tool number. For example a ‘G43 H<CTOOL>’ will generate a ‘G43 H2’ in the gcode for tool number 2.
Fixed bug in gcode generator that caused a repeat of the full depth level in some cases.
Fixed select options for the selection of all points in a shape.
Fixed DXF import of circles that were converted to points.

V2.9.4

Added ability to interrupt running SDL code in case of infinite loop conditions. Hitting the ESC key will interrupt the parser and return to user input.
Added option to display the description in the machine queue in place of the Operation, Shape and Tool currently displayed. If a description is not entered, that entry will display the standard layout. The option can be changed in the Option -> Settings -> Interface menu. The two formats can be toggled by double clicking on the words "Machine Queue" at the top of the queue. The setting is persistent.
Changed generated gcode to omit tool changes for subsequent steps that use the same tool when outputting gcode for multiple machine queue entries, but only if the tool is not tool zero. Tool zero will always have the tool change included.
Changed operation description so it can be modified from the standard tool table value for tools greater than zero.
Changed default setting for DXF import filter from 'Lines and Arcs' to 'All Elements'.
Fixed condition where the <d2*drawman> placed a shape into perpetual manual mode.
Fixed bug which may cause an gratuitous loop or circle at the start or end of a chain.
Fixed Show G-code "Save as..." option to prompt for the gcode file name.
Fixed error on 'Keep Selection' with nothing selected.
Fixed status line display of number of elements in shape for CAM mode.
Fixed error during DXF import while parsing layers on some DXF file types.
Disabled automatic element removal introduced in V2.9.3. This option has several issues which need to be resolved before being re-enabled. There were several reports of missing elements from both imported DXF files as well shapes converted from SDL, all caused by this feature. In most cases only fresh installs of V2.9.3 were impacted and not those installing over a prior version depending on the options set prior to the upgrade.

V2.9.3

Added "Centerline with 4th axis" path option. This option allows the cutting in X and Y indexed a specified number of times from a starting angle, every specified number of degrees along the 4th axis.
Added Marquee select in cam mode so whenever selection is available, dragging a frame around elements will select them.
Added user defined gcode blocks which are inserted into defined places in the generated gcode.
Added the option of either G98/G99 (G99 default) which is added to the canned cycles.
Added display of closed chains using a different color in the offset screen.
Added Wizard - MILL - Off - Involute Gear (module). This wizard was trans-coded from python into SDL from gearsgen.py, a python program by Clifford Wolf.
Changed feed adjust default scale to be 100% and down, the same as the speed adjust.
Changed minimum grid step to allow the smallest step to be 0.0001.
Fixed element removal option for elements smaller than the tolerance.
Fixed problem with DXF import not joining elements although the end points were within defined tolerance.
Fixed problem with closed chains end points within tolerance not connecting.
Fixed bug causing unnecessary tool lifts between steps.
Fixed several minor bugs and display problems.

V2.9.2

Added Adjust panel tab with Feed and Speed options. Set the feed or spindle speed per element as a percentage adjustment to the feed and speed in the path. Used in plasma, waterjet, laser and Oxy-fuel cutting.
Added Scale option to the Modify panel used to scale and flip the shape or selection
Added additional conditional tests to the SDL iff (:) command, not equal (!=) or
(<>) less than or equal (<=) or (=<) and greater than or equal (>=) or (=>).
Added SDL math function PI() with no arguments to return the value of PI.
Added SDL math function ATANXY(x,y) which works as an atan2 function, sign aware which returns a signed angle in radians based on the input coordinate relative to y.
Added SDL hint <d2*drawman> to set manual draw mode if set equal to 1.
Changed the occurrence component of the SDL block commands (N) (B) and (R) to be late bound so the controlling variable can be adjusted from within the loop. Allows the possibility of setting up while or until loops and a way to exit a loop.
Changed internal data and file structure to support feed and speed adjustments.
Changed the Delete panel to the Modify panel with a Delete option.
Changed the Move panel to Arrange panel with a Move option.
Changed Direction panel and Order panel combined into Manage panel with Direction and Order options.
Changed all wizards to work with new late bound rules for control variables.
Removed the Rotate panel and created the Rotate option on the Arrange panel.
Removed the Inc/split panel and moved the two options Include and Split to the Arrange panel.
Renamed the Include option to the Import option on the Arrange panel.
Renamed the Split option to the Export option on the Arrange panel.
Improved internal processing of imported DXF chains and chains from other shapes.
Fixed parser problem relating to two argument functions, LOG and ATANXY.
Fixed selection of points using points option in selection panel.
Fixed problem in cam with circle seen as an open shape.
Fixed problem with reverse selection being recognized by offset.

V2.9.1

Added SDL hint <d2_zdepth> to prefill path depth.
Added SDL hint <d2_zstep> to prefill path Z step.
Added SDL hint <d2*add2mq> to execute add to queue if set to 1. Only if at least <d2_tdia> hint is also present.
Added SDL hint <d2*pbutton> as a bit mask to show and hide path buttons.
Added auto tool desc. If the tool description is left blank when creating a path an automatic comment is inserted into the gcode in its place. "(Tool diameter: x.xx )"
Added a clearing option to offset by not removing geometry being offset and selecting the result for further offset. Invoked by holding shift before clicking offset.
Fixed SDL hint <d2_tdia> to prefill path tool diameter. Renamed from <tool_dia> and also fixed all wizards that used this.

V2.9.0

Added a CAM 'Origin' panel for changing the origin of the shape.
Added a CAM 'Move' panel for moving the selection or the entire shape.
Added a CAM 'Rotate' panel for rotating the selection or the entire shape.
Added a CAM 'Offset' panel to allow the native offset (in/out) of shapes for use in centerline paths.
Added a CAM 'Direction' panel.
Added a CAM 'Order' panel.
Added a CAM 'Nest' panel for making arrays of shapes.
Added a CAM 'Inc/Split' panel for including other shapes into the current shape and splitting and selected elements into another shape.
Added an undo stack so all CAM operations can be reversed as far back as the first operation.
Added new SDL command ^ for mirror. Functions the same way as the % reflect command but mirrors the shape instead.
Added ability to convert a SDL program into a CAM shape for further processing.
Added ability to load a CAM shape from any other shape.
Added option to the DXF settings menu to remove elements smaller than tolerance during DXF import.
Added option to the DXF settings menu to control the way that elements that are within the defined tolerance are adjusted during DXF import.
Added option to scale the DXF during import, from either inch or metric to the current setting. Alternatively a custom scale can be used by entering a multiplication factor, > 1 to increase and < 1 to reduce.
Added a 'View' panel to display the details of the machine queue entries.
Added Wizard - MILL - Off - Shape - Star.
Added Wizard - MILL - Multi - Engrave Surface Mount IC (written by Hamilton Elliott).
Added support for DXF entity lightweight polyline (LWPOLYLINE).
Added option to change grid size. Click in display area and then Ctl-G or double click the grid size display in the icon bar. Enter a 0 or Cancel button to return to the program defaults of 1inch or 10mm. Setting is persistent.
Added shift key startup option. The SHIFT key held down during D2nc startup overrides the "Load Previous" options to NO.
Added a display of a cut direction arrow. This can be toggled on or off for all shapes.
Added the name of last file saved to the prompt asking if you want to load the last file.
Added support for DXF files without CR+LF as created in linux or Qcad.
Changed the SDL C and V commands adding option 1 which uses the offset as the radius of the arc rather that the centerline distance.
Added options to the selection tool for selecting different element types as well as open and closed chains
Changed SDL Warp command by adding the anchor (option 2) and 'convert to line' (option 1) options so its works the same way as the Jump command.
Changed SDL Jump command by changing the anchor character * to the @ (option 2) character.
Changed SDL warp command to be included with jumps when rolled up into a single linear move.
Changed DXF import optimization for improved import speed on some files.
Changed the way shapes are selected for creating paths on the Path tab. The new procedure is to select a shape first and then an operation to be performed on that shape.
Changed the display of the axis and grid settings to be persistent (remembered).
Improved DXF file import where supported entities can be read from any DXF not just R12. The list of supported entities is still limited however. A separate web page on the D2nc site documents the supported entities.
Fixed the problem where locales using the comma as the decimal separator drops the fraction in all SDL calculations.
Fixed problem which limited the number of entities that can created. Theoretically now in excess of 2 billion but this would be very slow.
Fixed inside/outside determination code for arcs greater than 180
Fixed problem where imported DXF file may get overwritten with .d2c file contents.
Fixed insert library item scaling.
Fixed error in some cases when entering 3rd parameter of SLD A command.
Removed the dual functionality of SDL ‘#’ and ‘&’ implemented in version 2.1.0. When using the shape closer only the ‘&’ will work now.

Notes regarding changes in V2.9.0
V2.9.0 adds native offsetting which can be used as an alternative to G41/G42 offsets. The offset algorithm was coded from scratch. While it has been reasonably well tested, there can be situations where the resulting geometry is not correct. Please report all offset problems by sending the .d2c file and a brief problem description to me at support@d2nc.com. Sending the gcode .tap file is generally not helpful however I may request the .dxf file if I need it for debugging purposes.

The previous architecture of multiple sources has changed to two modes, SDL and CAM. The SDL source is now SDL mode while the DXF source has changed to become the CAM mode. CAM mode currently supports the importing of DXF files and the transfer of shapes that are described in SDL.

The SDL language option modifiers have been standardized across all SDL commands. Where SDL commands have options:
Option 1 is a shifted 1 which is the !
Option 2 is a shifted 2 which is the @
Option 3 is a shifted 3 which is the #
Option 4 is a shifted 4 which is the $

V2.3.0 Current Stable Release

Fixed SDL (A)rc and (W)arp command errors during entry of the heading as a 3rd parameter.
Fixed installer for Vista and Windows 7 installation errors.

V2.2.8

Added key validity checks.
Fixed DXF import bug with no elements in some cases.

V2.2.7

Fixed problem with identifying connected and closed chains in some cases.
Fixed problem with reversed inside/outside of the shape in some cases.

V2.2.6

Added support of the DXF Arbitrary Axis Algorithm for polylines using an object coordinate system (OCS) to map it to the world coordinates (WCS).
Fixed DXF polyline bulge angle with angles > 180 degrees.

V2.2.5

Fixed DXF import of closed polylines

V2.2.4

Added support for DXF polylines with bulge.
Fixed limit of 64k in Show G-Code display panel.

V2.2.3

Added trim to license name and key.

V2.2.2

Added license trace feature.

V2.2.1

Changed Rectangle wizard to include radius or chamfer corners.
Fixed problem with CAD launch button.

V2.2.0

Added G90.1 and G91.1 codes to the gcode depending on the setting of D2nc's IJ-mode. This eliminates the requirement to have Mach's IJ mode the same as D2nc's.
Added new SDL command % for reflection. Functions the same way as the shape closer & command but reflects the shape through an imaginary line that would have closed the shape.
Added optional CAD program launch button on the DXF shape source screen. The button name and program to launch must be configured in the option-> settings panel by selecting the DXF tab.
Added support for combo boxes in wizards to allow choice. The new centerline circle shape wizard and the spiral pocket wizard are the first to use this feature.
Added Wizard - MILL - CL - Shape - Circle.
Added Wizard - MILL - Off - Shape - Circle.
Added Wizard - MILL - Off - Shape - Rectangle.
Added Wizard - MILL - Off - Shape - Rectangle Centered Radius.
Added Wizard - MILL - CL - Surfacing in Y axis.
Changed Spiral pocket Wizard to allow selection of climb or conventional milling.

V2.1.2

Fixed problem with locales that use a comma as the decimal separator with DXF import

V2.1.1

Fixed problem with locales that use a comma as the decimal separator. SDL uses the comma as the command option separator so the decimal separator must always be entered as a period. This is now interpreted correctly for all locales.

V2.1.0

Added 4th axis operations. Wrap either the X or Y axis of a shape around the A axis and optionally scale one or both axis to fit the circumference of the material in A. Supports general cutting and engraving in the vertical axis. Gear cutting in the horizontal axis is planned.
Added a setting to optionally return to home position before and after each machine queue entry is processed or not. Default is on and will return.
Added an enhancement to wizards so that they can now generate multiple shapes from a single wizard. This new wizard type contains the word "Multi" in its name.
Added wizard - MILL - CL - Radial Pocket (tool centerline)
Added wizard - MILL - CL - Radial Pocket (tool edge)
Added wizard - MILL - Off - Shape - HEX - across flats
Added wizard - MILL - Off - Shape - HEX - across points
Added wizard - MILL - CL - Engine Flywheel Spoke Cutout
Added wizard - MILL - Multi - Engine Conrod
Added wizard - MILL - Multi - Engine Beam
Added wizard - MILL - CL - Engrave Bezel
Added wizard - MILL - CL - Engrave Scale
Added wizard - MILL - CL - Engrave Circle Pattern
Fixed accuracy of screen plotting when displaying arcs with fractions of and angle.
Fixed some minor file handling and shape state problems.
Fixed memory leak causing crash if program kept open for a long period of time.
Fixed DXF tolerance conversion when switching between metric and inch mode.
Changed display of heading indicator to "off" for wizard generated shapes.
Changed Centerline contour to allow drill shapes (no XY cutting moves).
Changed the SLD (J) Jump anchor character from * to @ for compatibility with a planned enhancement to SDL.
Changed the SDL (#) Close command character from # to & for compatibility with a planned enhancement to SDL. The # will still work for a while.

V2.0.4

Added colors to the display of the compensation moves. Green for in, Yellow for out.
Fixed some serious problems with G41/G42 offset compensation with respect to inside/outside and conventional/climb milling.
Changed wizard naming convention. Using ‘Off’ and ‘CL’ to indicate offset and centerline type of mill wizards.

V2.0.3

Added filter to wizard screen to help find the wizard you seeking. Start typing any string contained in the wizard name.
Added customizable materials in the tools menu for setting your own material descriptions and surface speed in either feet or meters per minute.
Fixed problem with quotes in tool description causing file load errors.
Fixed error caused by deleting last entry in machine queue.
Fixed initial compensation move placement for offset when changing to a shape that has a different direction of rotation.
Fixed the conv./climb toggle in offset to have the first segment remain the same.
Changed algorithm for determining the inside and outside of a closed shape. Now using a winding number instead of sum of angles.

V2.0.2

Added alternate method for DXF chain and element selection not dependent on OpenGLv2. This will work on older graphics cards. First click anywhere in the plot area then use the left and right arrows to select and the del key to remove selection.

V2.0.1

Fixed problem with installer registering a dll on some systems.

V2.0.0

Added wizards function using predefine blocks of SDL and an interface for adjusting the input variables. Release includes several common wizards.
Added SDL functions where any formula within parentheses () will be parsed. This allows SDL statements like d(1.5/2) or l(x),(sin(x)).
Added parser directives where any functions within <...> will be evaluated but not included in output. This allows structures like <x=x+1> or <dia=1> in SDL.
Added SDL variables and the use of variables in math functions. Variables can be defined and assigned in both function and parser directives.
Added sequence option in centerline cutting, all segments per step or each segment to depth.
Added SDL (E) Etch and (M) Move commands for drawing a line or jumping from the current position to a specific X,Y coordinate. Both of these commands update the heading so subsequent SDL commands start on a correct heading.
Added settings option to set colors for both axis and grid line display.
Added format SDL or "pretty printer" button. Reformat the SDL input with one command per line.
Added internal tolerance to SDL so that shapes with very close start and end points will be seen as closed shapes.
Added status display of current shape to toolbar.
Added ability to drop DXF files on D2nc icon to open them.
Added wizard - DRILL - Bolt Circle
Added wizard - DRILL - Hole Array
Added wizard - DRILL - Linear Hole Pattern
Added wizard - DRILL - Rectangular Hole Array
Added wizard - MILL - CL - Bolt Circle
Added wizard - MILL - CL - Radial Slot
Added wizard - MILL - CL - Rectangular Pocket
Added wizard - MILL - CL - Slotted Timing Disc
Added wizard - MILL - CL - Spiral pocket
Added wizard - MILL - CL - Surfacing in X axis
Added wizard - MILL - Off - 'D' Hole
Added wizard - MILL - Off - Radial Slot
Changed SDL handling and g-code generation routines which are now optimized for greater speed.
Changed function of construct line toggle to include all stippled lines.
Fixed grid display not scaling from origin 0,0 in metric mode with zoom.
Fixed offset of a shape which had points embedded so that it was not valid for G41/G42
Fixed color options which did not always render the correct color.
Fixed option to set the background color which was always black.
Fixed circles described as -360 degrees being detected as points.
Fixed shape made up only of multiple circles being detected as points.
Fixed minor display bugs when switching shape source.
Fixed error when adding to queue an offset shape when a non offset shape was in queue
Fixed F1 context sensitive help for all screens.
Fixed placement of compensation moves for a full circle.
Fixed increment of compensation moves 'by one' when shifted click.
Removed SDL (O) Origin command which has been replaced by the (M) move command.
Removed SDL ($) and (&) commands which are replaced by a M0,0 and E0,0 respectively.

V1.4.3

Fixed erroneous M30 rewind entries in gcode generated from multiple machine queue entries.

V1.4.2

Fixed disabled drill options for points sourced from a DXF file.
Fixed DXF import where some elements were being duplicated.
Fixed missing feed rate on G02/G03 moves following a Z axis move after a G41/G42.
Fixed DXF optimization for choosing shortest path between open segments.
Fixed mishandling of "keep" and "remove" selected elements of a DXF.

V1.4.1

Changed check to see if output gcode file is in use and allow retry.
Fixed IJ absolute/relative mode causing problems with DXF import/export.

V1.4.0

Added export of selected shapes to a simple DXF file for editing in cad programs.
Added Z rapid/feed transition plane with an option to make this progressive. Static is height above 0 plane, progressive is height above target Z level + step.
Added DXF import tolerance for discriminating between open and closed chains.
Added selecting machine queue entry now shows associated shape.
Added mark and clear all machine queue entry buttons.
Added option to set the percent along a segment where a lead in/out compensation move will occur on the selected segment. Was fixed at 50% for lines and 0% for arcs. New default is 50% for all segment types.
Changed 'Add to Queue' button to now first clear all other selected entries in the queue as a safety feature.
Changed DXF import function for optimizing the cutting order of open chains.
Changed position/pause mode, which allows using the quill for drilling tapping and reaming, to not make any Z axis moves, including any move to safe Z, in the generated gcode.
Fixed offset in/out selecting the wrong side for a circle.
Fixed DXF import 'circles as points' which connected points with cuts instead of moves.
Fixed missing feed rate on G02/G03 moves following a Z axis move in some cases.
Fixed DXF reset function to allow switch back to SDL.

V1.3.0

Added DXF import option as a selectable shape source. Each shape can can be either SDL or DXF sourced.
Added a display of the current coordinates during SDL input.
Added selection of climb or conventional milling for outside or inside contouring.
Changed left and right contouring of a closed shape to outside and inside. D2nc now knows which is which.
Changed the internal shape translation engine to allow for different shape sources and for some planned functions.
Fixed the way the # command will close a shape in some cases.
Fixed arc of 360 with center at 0,0 not enabled for cutting.
Fixed the way internal rounding works needed for DXF import function.
Fixed bug with multiple shapes in machine queue out of shape number sequence.
Fixed regional formatting of gcode problem over 1000 units.

V1.2.0

Changed display to use OpenGL graphics. Display can be dragged with the left mouse button and zoomed using the mouse wheel or dragging while holding the shift key and left mouse button.
Changed overall screen layout and control improvements along with a toolbar for commonly used features.
Changed limit on machine queue entries from 10 to 100.
Changed shape description language (SDL) by removing the (S)hape command and added the (O)rigin command in its place. Each shape now has its own input area selectable with shape selector buttons.
Added check box on machine queue to include/exclude item from gcode generated. Default is 'selected' on add to queue.
Added (T)angent command to the shape description language (SDL) along with examples in help file.
Added file association with .d2c files. Double click on file in explorer opens that file in D2nc.
Fixed machine queue out of order problem caused by moving entries up and down the queue.
Fixed open/save directory to default to last used.
Fixed help file graphics so the lines are more visible.
Fixed compensation moves if step greater than full depth.
Fixed close shape command (#) when used with C and V commands.
Fixed drilling depth and feedrate problems.

V1.1.0

Added setting tab to make IJ gcode output either absolute or incremental. IJ incremental is the default setting.
Added compensation strategy, at safe z, first/last pass and every pass for G41,G42 compensation moves.
Added display for shape detail showing last heading, origin, closed and open count and if the shape can be used for drill operation or not.
Added setting tab to allow user settable colors for display area and all line types.

V1.0.0

First Public release.