QCAD Bugtracker

QCAD Professional
Win installer 32bit
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Documented in 3.25.2.4, reproducible under 3.25.2.7
In the attached file:
→ Explode the trial cases and locate NaN Widths.
→ These faulty widths are cleared while saving and reverting.
= work around.

Related Post: https://www.qcad.org/rsforum/viewtopic.php?t=7902#p30902
Related Topic: https://www.qcad.org/rsforum/viewtopic.php?t=7901
Related Commit: https://github.com/qcad/qcad/commit/fcd7929bced7ae328029c1aa2ee2aff2745709c6

Arctic_Eddie reports failing CAM offset at exactly these points !!!
Reported is a faulty arc with radius of over 360,000mm.
- I can not reproduce this under QCAD working further on the Polys with NaNs.
- However the direct offset of such controlpoint Splines is erroneous.
(see file in post 30902)

Arctic_Eddie reports arc radii of over 10,000mm.
- These don’t seem to be faulty.
- I agree that BiArc fitting should be bound to a lower and certainly to an upper limit.
- That should be huge otherwise faint curvature is represented by many
wobbles or too quick by straight lines.
(All this, keeping in mind that QCAD doesn’t return the optimum fitted BiArc, see: https://www.qcad.org/rsforum/viewtopic.php?t=4859)

Regards,
CVH

QCAD Professional
Win installer 32
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Discovered in 3.25.2.4, reproducible under 3.25.2.7

Draw any open or closed chain of line entities.
Select All.
OC to Polyline.
Step through vertices.

No example file provided because these NaN values are not saved to a file.
More pronounced with lines as with arcs.
Less pronounced when recombining after an explosion.
Some methods clear these to value = void.
Some methods clear these to zero (OR).
Can also occur when adding segments to an existing polyline with OC.

Regards,
CVH

QCAD Professional
Win installer 32bit
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Origin:
I like to start my CAM paths at low curvature instead starting at high curvature.
Ellipses may explode with the startpoint at the tip. (file Y2)

Documented in 3.25.2.4, reproducible under 3.25.2.7

File included with 4 LayerStates
- Original Ellipses: Y1
- Exploded to polylines (32 segments): Y2
- Direct after XP, OR performs different on the left top one: Y3
- Faulty solutions by OR: Y4 (= saved state)

The results may differ with the saved explosions.

With the file.
Y1
TA
XP
Relocate startpoint with OR to an existing reference (called ‘End’)

Regards,
CVH

QCAD Professional
Win installer 32bit
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Not related to OS, nor version.

The method Polyline from Segments (OC) can be configured for tolerance and simplification in the Options Toolbar.
The method Polyline from Selection (OG) has no UI or none showing.

OG retrieves a tolerance from QCAD.ini, what is initially not set:

    var tolerance = RSettings.getDoubleValue("PolylineFromSelection/Tolerance", 0.001);

The tolerance will be default = 0.001 similar as the default in AppPrefs.
The tolerance setting is included in QCAD.ini after changing the AppPrefs entry.

OG calls PolylineFromSelection.autoJoinSegments with this tolerance:

    var counter = PolylineFromSelection.autoJoinSegments(di, tolerance, this);

PolylineFromSelection.autoJoinSegments calls PolylineFromSegments.createPolylineShape
with simplification hard coded to true. (last parameter)

    // create polyline from line, arc, spline or open polyline entity:
    var polyline = PolylineFromSegments.createPolylineShape(
                    entity, doc, vTolerance, op, undefined,
                    traversed, callBacks, undefined, true);

I would like to see the simplification optional and default = true.

Regards,
CVH

Unrelated to OS, nor version

Reported Jun 23, 2020 in: https://qcad.org/rsforum/viewtopic.php?f=30&t=7372

Status Dec 24, 2020: https://qcad.org/rsforum/viewtopic.php?f=30&t=7372#p30955 Documentation is updated.
The Classes still refer to an ‘angleTolerance’.

Regards,
CVH

With a Mac (and no external mouse) there’s no middle button so it’s not possible to pan the 3D view (that’s what they tell me in the forum). It would be useful if one could use command-drag or control-drag to pan around the 3D view.

QCAD/CAM
Trial package Win installer 32 bit
Version: 3.25.2.0 (3.25.2)
Internet: QCAD.org
Build Date: Sep 4 2020
Revision: 4a61501
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Local decimal separator is ‘,’ (comma)
In CAM configuration .. Z Levels .. Safety level

Using nn,nnn the output is Nxx G0 Znn
Using nn.nnn the output is Nxx G0 Znn.nnn

Drop down boxes are all in dot format.
Didn’t try anything else yet

Regards,
CVH

When placing a hole at x0 y0 there is no G00 x0 y0 in the exported G-Code.
So the first cut was made at the current position of the tool, not at x0 y0!

Add alpha property to filter for hatches.

QCAD Professional
Windows 7, Win installer 32bit
Version: 3.25.2.7 (3.25.2.7)
Internet: QCAD.org
Build Date: Dec 16 2020
Revision: e06f230
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Issues most likely unrelated to OS and installations before 3.25.
Related post:
https://qcad.org/rsforum/viewtopic.php?&t=7982

Flaws documented in full in attached dxf.
The dxf has meaningful Layer States.

4 Columns:
- Prior Art
- The test cases
- Actual results
- Results with proposed fix

Tried as many things as I can come up with.
Orange: Flaws
Red: Errors
Green: Good results (or as good as I can get them)

Solution(s) given in attached script explode.js
(I am just a simple guy and wouldn’t know how to file a pull request on GitHub ......)

In section: “explode polyline into line and arc segments”
group: “if (RPolyline.hasProxy() && polyline.hasWidths()) {....}”
All additions, updates & typos are marked with “CVH”, one can textual search for it.
Over-documented for sure.
Any Eaction is to debug in Windows and is obsolete.

Included PreferencesPage.ui is updated for the all Splines from Text fix
Still in consideration: Forcing cubic splines from text to degree 2 ...
... I am rather convinced ...

CVH

In the Application Preferences>Draw>Text dialog, when first opened, the Uncheck all and Check all buttons are not disabled if the Show font preview in font controls check box is checked. If you click on the Use reduced selection of fonts check box twice the buttons become disabled.

Include RPolyline.getLeftRightOutline() method in class_r_polyline.html

In use since 11 Sept 2020

CVH

QCAD Pro 3.25.2.7 Win7 Wininstaller 32bit
Related Topic:
https://www.qcad.org/rsforum/viewtopic.php?&t=7954

Reported is that black is saved as #00004c (dark blue)
Radek (iMac (Retina 5K, 27-inch, 2017), Catalina 10.15.7 (19H114)

My system/installation saves black as #4c000 (dark red)

When using single primary colors these get reduced to #4c, #7f, #99, #cc & #ff.
The threshold for that are #00, #65, #8b, #b2 & #e5
See: DimColorScale (png & dxf)

8 standard CAD colors fail saving correct
Black (something with #4c)
Dark Red, Dark Green, Dark Blue, Dark Cyan, Dark Magenta, Dark Yellow
(#80 turns #7f)
& Gray
(#adadad instead of #a0a0a4)

As with Gray, when mixing the 3 colors it gets rather fuzzy ...
#505050 & #555555 both turn #5b5b5b
&
#464646 turns #4c4226

A snippet of my investigation is included in the topic
(45 files in a ZIP)

CVH

Select the previously selected entities.

When user activated LIne → Parralel (LP), there’s two input fields - Distance and Number. Keyboard shortcut Alt-N activated Number input field very well, but shortcut Alt-D activate menu Draw instead. So user forced to point Distance input field by mouse.

That’ because conflicting letter D.

Make a letter as shortcut (Distance) will remove problem b’coz no menu or option assigned to Alt-A combination

The option for vertically and diagonally stacked fractions would be helpful for both the text creation tool and as the output of dimensions.

An option for unidirectional dimensions, in addition to the default aligned dimensions.

Support for external references (XREF)