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QCAD - 2D CAD System.

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IDCategoryTask TypeSeveritySummaryStatus  ascProgress
1765QCAD (main)Bug ReportVery LowErrors with polyline offsetAssigned
1 Task Description

Win 7 32 bit QCAD 3.20.1

Ofsset of a base-line with arcs results in massive ammount of errors.
Most of them occur as a cluster of very tiny segments and are part of the offset. (zoom far in at the red circles)
Mostly they occur where the offsetted arcs should merely be trimmend pairwise.
Some occur as detached entities or as detached strings of entities very near the offset (strings not documented).
Spooks occur at opposite site when base-line is not closed.
360° curls can occur with R = Offset.
Null-entities may occur (not documented, hard to find and not able to copy).

The base-line is checked and sound and has mixed tangentially or not tangentially connected arcs.
Offsetting the mother base-line of the base in the file has similar effect but not all and/or different ones.
Also encountered with offseting polys from fonts.
Used to define pocket paths for CNC.
Detected because the CNC driver will not accept Self-crossers, Null-entities or open ends depending on the settings.

Work arround is to explode and select small entities but this does not solves the issues.
1) Choosing the tolerance large enough will detect small segments that should stay.
2) Recombining will generate new ones at the place where the main segments remain crossed.
Cleaning up the paths is a daunting process with some thousand segments for several offsets.

I assume this has an infuence on the CAM part of QCAD too unless the offset method is different.

1285QCAD (main)Feature RequestLowProperty PainterResearching
2 Task Description

Easy transfer of properties from one entity to others

1394QCAD (main)Feature RequestLowArc length dimensionRequires Testing
1 Task Description

Support arc length dimenions (undocumented DXF entity ‘ARC_DIMENSION’).
Create arc length dimensions with parallel extension lines for angle < 90, orthogonal extension lines otherwise.
Display arc symbol beside or on top of label text.

259QCAD (main)Feature RequestMediumChain dimensionsLikely to be implemented
11 Task Description

Chain dimensions

260QCAD (main)Feature RequestMediumReference dimensioningLikely to be implemented
9 Task Description

Reference dimensioning (baseline dimensioning)

Create multiple dimensions using the same base line.

693QCAD (main)Feature RequestMediumSupport for external references (XREF)Likely to be implemented
13 Task Description

Support for external references (XREF)

694QCAD (main)Feature RequestMediumUser coordinate systems (UCS)Likely to be implemented
5 Task Description

UCS support.

1127QCAD (main)Feature RequestLowLeaders: spline shapedLikely to be implemented
1 Task Description

Add support for spline shaped leaders

1224QCAD (main)Feature RequestLowRevision cloudsLikely to be implemented
2 Task Description

Add support to draw revision clouds or convert polylines, ellipses, circles to revision clouds.

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