QCAD Bugtracker

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=8&t=8383

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=5267

See also:
http://www.qcad.org/rsforum/viewtopic.php?f=89&t=4089&view=unread#unread

Create text using “standard” font with color change (e.g. one letter in the middle red).

Add an option to create a solid fill hatch for shape tools.

See also:
http://www.qcad.org/rsforum/viewtopic.php?f=33&t=4318

Tolerance input field in simplify tool has no effect.

Win7/32bit
QCADpro 3.22.1.0

Full 360 degrees Arcs don’t convert correct to polylines with the methods OG and OC.
Both methods create a zero-length open type Polyline and remove the full Arc.
OG creates a Poly with 2 vertexes at the startpoint (= endpoint) and OC one with 0 (zero!) vertexes.
The firts one is selectable, the second one only with ‘Select All’//TA because there are no references.

The OL method with the same start and endpoint doens’t affect the full arc.
Neither a poly is created nor an error is generated that the method failed.

Typical the bulge of the OG method is (-)16331239353195370, the OC method has no references.
The math to calculate the bulge should result in a division by zero or an illegal function as tan(π/2).
Therefore a polyline can’t contain a 360 degrees arc by standard means.

From the OC method is known that it simplify coradial arc strings to a single arc.
This should not result in 360 degrees arcs what would result in zero-length segments.
(With CAM fuzzy things may happen at such positions)

Simplifying coradial arcs strings that would create a 360 degrees arc should result in no less then two coradial Arcs.
The OG method will then creates a open Poly with 3 vertexes, OC a closed one with 2 vertexes.

Found while fiddling around with editing CXF fonts.
CXF uses full Arcs, two half arcs and even polylines with coradial segments that forms circles are supported,
the OC closed polyline with 2 vertexes is recoded as two 180 degree Arcs (90-270&270-90).

Regards
CVH

Throws me out of QCad consistently:

1. Have a polyline selected.
2. Click partial polyline along selection and click the first point on the polyline.
3. Hit escape key or similar to exit the tool.

Exception in RPolyline::getLengthTo if no segment is found while setting start / end point.

Depolyment issue with qcaddwg plugin.

- Create four arc segments representing a full circle
- Create polyline from segments

Empty polyline is created (caused by simplification).

Andrew,

Deleting a node of a polyline (OD) followed by Undo (OO) while OD is still in ChoosingNode state and then deleting another node returns a polyline where both nodes are removed.

this.polylineEntity is set once in pickEntity() altered after pickCoordinate() and a clone is returned to the drawing.
The next pickCoordinate() continues with altering this.polylineEntity without retrieving the current form and is thus unaware that the former action might be undone.

The work around to undo a removal is first to terminate (QQ) PolylineDeleteNode then Undo (OO) and then start over with selecting the polyline and indicating nodes.

While adding nodes (OA) we can simply undo the last action and continue adding nodes.

Because the new entity has the same id as the initially one ...
... It should be possible to re-retrieve the actual entity by id in pickCoordinate() or deleteNode().

Regards,
CVH

QCAD crashes when you perform the following operations:

1. Create Polyline with just one segment.  
2. Delete the node with DELETE NODE(S) command.  
3. Press ESC several times.
(-> QCAD crashes..)

(Re-)combining polys touching at node with ‘create from selected’ leads to application crash.

QCAD 3.20.1 Win7 32bit

In the file example 2.
Regards

‘Create From Segments’ ‘OG’ includes and admits selection of segments on locked layers.

A)
-When selecting a segment on a not locked layer it can include segments on locked layers that connect to the string. (Assumed wrong)
-A copy of the segments on the locked layer(s) are included in the polyline. (Assumed wrong)
These segments are not removed from the locked layer(s) because of their locked nature. (Intended behaviour)
eg. ‘OG’ & selecting the arc at point A in the example file. The arc is on a not locked layer.

B)
-When selecting a segment on a locked layer it will fully remove segments that connect to the string on not locked layers. (Assumed very wrong)
-Connecting segments on the locked layer(s) will not be converted to a polyline because of their locked nature. (Intended behaviour)
eg. ‘OG’ & selecting the line at point B in the example file. The cyan lines are on a locked Layer.

Both A & B can be undone.

The example is a part of the ‘Skewing project’.

Regards
CVH

In some cases, loose arc segments result in errors.
See:
http://www.qcad.org/rsforum/viewtopic.php?f=33&t=3573

Selecting the polyline is not possible.
Possibly related to update of DrawPolyline tool.

Exception due to invalid include path.

... just cosmetic!

Rectangle with size: The option box “Reference Point” is a bit to small to show the whole text of the chosen option.

English / German = same behavior.

Draw > Line > Parallel
- switch type to Line, XLine or Ray
- switch back to Auto
- Parallel is always line segment

When user activated LIne → Parallel (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

If I insert a bitmap the relative zero point (RZ) isn’t set at all. It will be set at the mouse position in the moment when I terminate the tool.

This leads among other things that I can’t use the Alt key for ortho mode or other tools for restrictions.

Draw > Image broken due to UI file resource not being found.

https://qcad.org/rsforum/viewtopic.php?f=33&t=7254

It seems to be an accuracy problem.
The original hatch boundaries are defined from 732 single entities.
These interconnect with an accuracy better then 1e-10 except for a gap of 0.000814 in two places.

Creating a Hatch of these entities with TA-HA is rather slow but succesfull.
After Save-Close-Open the Hatch may look different or may even be missing (=Null).

Suspected is that:
The recreation off the Hatch on load uses some other accuracy setting.
The outer boundary is not found and only some inner ones are considered as outer.

But that explains not why it looks fine after initial creation.
Nor that the outcome of a retry may vary.

Regards,
CVH

- Draw boundary (e.g. rectangle)
- Create block from boundary
- Select block reference
- Draw > Hatch

Hatch boundaries containing arcs with large radii are rendered imprecisely.
See also:
http://www.qcad.org/rsforum/viewtopic.php?f=89&t=4139

Hello. I refer to https://www.qcad.org/rsforum/viewtopic.php?p=25905#p25905 where when a block is hatched that hatch reference point is located at absolute 0,0 )where the block reference point is mapped as the reference point of the hatch and that reference point is absolute 0,0).
Best regards

Using QCAD 3.23.0.10
Win 10

- Draw circle inside other circle
- Draw > Hatch > Hatch from Segments
- Click both circles
- Right-click

Andrew,

In some cases Draw > Ellipse > Inscribed in Quadrilateral (EQ) may return a perfectly healthy result but rotated for 90 degrees.
- Size doesn’t matter.
- Quadrant doesn’t matter.
- Geometrical open or closed base shape doesn’t matter.
- A mirrored base shape usually preforms well.

See attachment with examples.
The incorrect results (red) are rotated 90 degrees around the ellipse center (dotted)
Green is a correct result from a mirrored base shape.

Regards,
CVH

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=8708

Caused by missing linear scale property of ordinate dimensions.

The result of the tool CT2 depends on the position where the circle is constructed.

See also https://www.qcad.org/rsforum/viewtopic.php?f=32&t=6577&p=24772#p24772

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=6915

Andrew,

With 3 co-linear points:
- Arc3P will warn the user that an arc can’t be created (Line 141).
- Circle3P creates a null-circle without issuing a similar warning (Line 149).

The difference sits in ShapeAlgorithms.js
- ShapeAlgorithms.createArcFrom3Points Line 1465 checks if the returned arc isValid.
- ShapeAlgorithms.createCircleFrom3Points Line 1436 checks if the returned circle isNull.

Similar as RArc.cpp at Line 108 RCircle.cpp returns an RCircle() at Line 74 when there is no intersection of the two middle lines.
An RCircle() isn’t a valid circle as such but it is not nothing.

The error from ShapeAlgorithms.js is also treated somewhat different in the pickCoordinate event of Arc3P vs Circle3P.

Regards,
CVH

I started a drawing with a circle, center at 0,150 and gave 0,0 as coordinate for a point on the circle and got visually nothing.
After some head scratching and trying to find some error like locked layer, drawing color the same as background color and such, I found at the location of the center (0,150) a circle with radius 0.

I made the following trials, every time starting with a new drawing, entering everything with the keyboard.

Center point on result

circle

0,150 0,0 circle radius 0 at 0,150
0,150 50,50 circle radius 50 at 0,150 (should be a radius of 111.8 from 0,150 to 50,50)
0,150 0,50 circle radius 50 at 0,150
0,150 50,0 circle radius 0 at 0,150

It seems I always get a circle with the radius of the y-part of the coordinate.

Used version of Qcad is:
QCAD version: 3.15.5.0
Date: Aug 19 2016
Qt version: 5.5.1
Compiler version: MSVC++ 12.0 (2013)
Build Date: Aug 19 2016
Revision: 15ef1a13237ff8355ff590fd2e16570ef9de82a0

Given is a drawing of two concentric arcs connected at the ends. (see attached drawing Circle_from_3_Tangents_1.png)

When I try to add a circle at one end by the “Circle from 3 Tangents”-tool, it does nothing.

I also tried it with another drawing (see attached drawing Circle_from_3_Tangents_2.png) - same negative result.

I then tried drawing Circle_from_3_Tangents_3.png. Here the tool only produces outside circles and misses the inside ones.

Hope you can confirm my findings.

If I try to draw a circle between two little circles with a radius (e.g.) of 3000 the tool shows me only two possibility’s - but there are much more. If I make a counter test with the tool “2 Tangents with Point” all possibility’s are correct shown.

first pic “2 Tangents with Point” correct,

second pic “2 Tangents + Radius” incorrect,

Draw > Circle > 2 Tangents and Radius
Choose two arcs or two circles as tangential entities.

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=8773

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=8773

With the attached DXF file, select Draw → Polyline → Create from Segments
(O, G) and click on the complex polyline inside the circle (eg on
the top left arc). Apolyline is created with a few segments,
and one or more segments are deleted!

Different segments are deleted depending on which segment is clicked.

XP/32 QCAD 3.0.5

... after picking the first Point a wrong message appears what says:
“Warning: The two points are identical”

Drag and drop requires two clicks with auto snap if grid snap and free snap are disabled for auto snap.
- Edit > Application Preferences > Snap > Auto Snap: disable grid and free
- Drag an entity and try to position it
- First click does nothing, second click positions entity

See the steps to reproduce in the attached drawing.