QCAD Bugtracker

How to reproduce the bug:
1-open a new file
2-select text tool, simple text(one line,no formatting) and alignment in base-left
3-write some text in somewhere position in the draw, repeat this in others positions
4-save the file in .dxf R15 [2000/LT2000] (dxflib) format
5-close Qcad
6-open the saved file, the writhed text lose original position and now all the text have 0,0 position

The Omega button to insert special characters is only available in rich text mode.
Make it available in simple text mode as well.

“Create New Drawing from Template” Browser can’t readout the Page orientation ...

I wanted to make it so, that SVG units translate 1:1 into CAD units; I use the German localized QCAD and entered 25,4 into the box with the wrong result, i.e. the same as 25; Entering 25.4 got me what I wanted: The question box needs the point and ignores the comma. Would be nice if it could use the localized separator.

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

Attached DWG/DXF files are incorrectly read by QCAD.
They contain splines drawn using ZWCAD and saved as DWG/DXF version 2000.
Above splines are polylines created with autolisp routine which converts spline to polyline, so you can see how splines should actually be drawn.

First spline is created with fit points: 2,2 4,4 6,2
Then copied and applied weight of 2 on central control point.
Then copied again and applied weight of 0.5 on central control point.

Second spline is created with fit points: 6,2 8,4 10,2 with vertical start and end tangent.
Then copied and applied fit tolerance of 1 for fit points.

Third spline is created with fit points: 10,2 12,4 14,2 with horizontal start and end tangent.

Fourth and fifth spline are correctly drawn by QCAD.

Link to bitmap (converted to png) export:
External Link

Versions
QCAD version: 3.13.1.0
Date: Mar 17 2016
Qt version: 4.8.4
Compiler version: gcc 4.4.3
Build Date: Mar 17 2016
Revision:
Architecture: x86_64
OS: Linux
OS version: Unknown

See also:
https://www.qcad.org/rsforum/posting.php?mode=reply&f=32&t=6211

Slow loading of drawing with huge number of block inserts (more than 10000).

QCAD (before version 3.27?) used to show some custom XDATA, e.g. tag 1000, even for application names that are not “QCAD”, which for me was useful, so it’s somewhat of a regression. (I think it was broken when selecting multiple items, maybe that’s why it was removed.)

I suggest to bring that feature back, but maybe show it only when a single element is selected if that’s easier.

(As a workaround/hack I guess it would be possible to rewrite the required information as QCAD compatible XDATA externally I guess.)

I would like to get a shortkey like ‘+’ to rotate text at 90° clockwise.

This would be nice.
It will save a lot mouse - keypad changes for me.

Currently, the model space can display lineweights at scale 1:1
It’s very convenient when drawing small objects that will be printed at scale 1:1 : it makes it easy to anticipate the final aspect of the printed drawing.
But this feature is unusable for architects or users who draw large objects.

Therefore, it would be very useful to have a factor to multiply lineweight display in model space.
For example : if i know my drawing will probably be printed at scale 1:50, i set the value of the lineweight factor to 50.
Then every line would be displayed 50x thicker in model space.

In a medium complex drawing it may be too much details to have all layers in a drawing visible at once.

Instead a number of views would be created that saves not only zoom level and position but also what layers are visible and not (as appropriate for the purpose of that particular view). This is very cumbersome (to the extent it is not really realistic) to achieve today and requires a lot of duplication of both model and layers.

The advantage of adding this is the ability to have only one model (with multiple views) and avoid duplication of work and the risk of inconsistency inherent with many copies of the model.

As a further (and natural extension to this) would be the ability to used this functionality with view-ports to be able to create (possibly many) paper-spaces from a single model. This would however require view-ports to be aware of what view they are a window into. A single change in the model would then propagate to all defined view-ports and paper-spaces.

When saving a view, it would be great if the view also saved which block (model space, layout block, or any other block) that was active at the time the view was saved and when the view is later re-activated, the corresponding block would re-activate.

Ruler ticks are not corresponding to the grid points,
Ruler will completely disappear at a certain zoom level,

Settings:
Drawing unit: inch,
Grid settings: Grid 1, Meta Grid 12,
Dim Label Format: “Engineering, 0’-0.0”

see topic below:
http://www.qcad.org/rsforum/viewtopic.php?f=32&t=3014

Andrew,

Referring to this forum post:
https://www.qcad.org/rsforum/viewtopic.php?f=74&t=10152

With radii 1341.35667735 and 26 the relative tolerance is 0.00683678 and exceeds the former used fixed tolerance of 1e-4.

These arcs will then be considered to be tangent and the intersection point is 0.31024 units to the left of where we expect it.

Implemented: https://github.com/qcad/qcad/commit/77ae3e4518cc34f178779d2d2c724adcf80c229d#diff-dcc4e31eaeaed5a047f65dbce4ddda4bcd4d604e9e1005ee8481ded273768449

Updated: https://github.com/qcad/qcad/commit/071b60acd1176e6301bf6b6fcf716684221a97e8#diff-dcc4e31eaeaed5a047f65dbce4ddda4bcd4d604e9e1005ee8481ded273768449

I had already expressed my reserves on the relative tolerance but that was already a better solution for small arcs:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=8775&p=34907#p34907

We could limit the tolerance by:
A- The smallest of the fixed and the relative.
B- A relative tolerance based on R2 there circle 1 is forced to be the larger one.

This will never account for the position in the plane.
At a certain point the tolerance will be less than the accuracy/certainty of the values.

Regards,
CVH

Hi,

I believe prior QCAD version 3.22.0.0 there was no rotating preview. The rotating preview shows the outcome regarding to the chosen center point. I know that it is also common for move/copy. However, for me it is very confusing and difficult to chose the correct center point for a rotation if I’m constantly been distracted by the most of the time overlapping preview of my selection. This said if the drawing is very detailed I have to zoom in extremely to be able to snap to the right entity. That wouldn’t be necessary without the preview. Additional rotate a large drawing selections will compromise the performance - CPU is going like crazy.

It would be nice to have an option to turn this preview on/off.

Andrew,

It took me a while to find the source of a certain freak bug I encountered.
I used the RLine.isParallel(RLine) as a test for knowing if line segments were parallel or not.

Included below is script code that mimics the functionally of isParallel().

As far as I know isParallel() is nowhere used in the QCAD open source.
Textual only found in RLine.cpp & .h or under: opennurbs, ecmaapi\generated and ecmagenerator\src.

// Example:
// RShape1: RLine(RShape(address: "0xcd70e28"), startPoint: "RVector(969.219858, -171.914894, 0.000000, 1)", endPoint: "RVector(1010.000000, -140.000000, 0.000000, 1)")
// RShape2: RLine(RShape(address: "0x7659770"), startPoint: "RVector(969.219858, -171.914894, 0.000000, 1)", endPoint: "RVector(930.000000, -340.000000, 0.000000, 1)")
----
var aShape1Angle = shape1.getAngle();    // =0.6640461628266838 rad
var aShape2Angle = shape2.getAngle();    // =4.483157047107694 rad
----
// RLine::isParallel(RLine) -> aTest1 || aTest2
var aTest1 = RMath.isSameDirection(aShape1Angle, aShape2Angle);              // =false
var aTest2 = RMath.isSameDirection(aShape1Angle, aShape2Angle + Math.PI);    // =true
var aTestOr = aTest1 || aTest2;                                              // =>TRUE !?
----
// # BUG # RShape1 is considered as parallel with RShape2
----
// RMath::isSameDirection(dir1, dir2, tol) ... tol = RS.AngleTolerance = 1e-9
// for aTest1 -> ax1Test1 || ax1Test2
var ax1Dif = Math.abs(aShape1Angle - aShape2Angle);    // =3.8191108842810104 rad
var ax1Test1 = ax1Dif < 1e-9;                          // =false
var ax1Test2 = ax1Dif > 2*Math.PI - 1e-9;              // =false
var ax1TestOr = ax1Test1 || ax1Test2;                  // =>FALSE
----
// for aTest2 -> ax2Test1 || ax2Test2
var ax2Dif = Math.abs(aShape1Angle - (aShape2Angle + Math.PI));    // =6.9607035378708035 rad
var ax2Test1 = ax2Dif < 1e-9;                                      // =false
var ax2Test2 = ax2Dif > 2*Math.PI - 1e-9;                          // =true
var ax1TestOr = ax1Test1 || ax1Test2;                              // =>TRUE
----
// # BUG # The second test of the second isSameDirection() test returns true because ax2Dif is over 2pi

Regards,
CVH

Andrew,

When we alter about any property of a Hatch entity it seems to be recreated with a newer/higher handle.
This doesn’t influence the drawing order in direct.
But already changing the drawing order of a Hatch it is recreated as a new entity.

It starts to matters in drawing order when there are multiple entities with the same drawing order and that after save/reload. Entities with the same drawing order then receive a new drawing order based on the original but sequentially increasing based on handle.

Because a Hatch is recreated with a newer/higher handle each time a property changes it will thus always end up above the others with the same order even when the original was created earlier.

This is more pronounced when copying/pasting entities from a source to a target drawing.
The original Hatch drawing order is retained but it will always be above existent entities with the same drawing order in the target drawing after save/reload.

Most other entities are probably just updated in situ.
It is unsure to me at this point if merely updating a Hatch is even possible.
And perhaps this is related to the addObject ForceNew flag what is false by default.

Regards,
CVH

Andrew,

Changing orientation of a polyline with RV or by changing it in the Property Editor clears the global width value.

Single line pieces as polyline default to CCW.
Still the global width is cleared when trying to set them CW.

I didn’t update since 3.27.0 but reading this topic I suppose it still is valid.
Related: https://www.qcad.org/rsforum/viewtopic.php?f=89&t=9362

Regards,
CVH

Many times I’m faced with the situation that I have to use a rectangle related to other entities. Dimensions/Angle = unknown.

We have in QCAD a rectangle tool with a two point diagonal determination but this is limited to two points and it will only work in a horizontal and vertical direction.

My feature request is based on the idea to draw a rectangle with 3 points - regardless the angle.

1. First point: start

2. second point: determination of the first side (width?) and it will also provide the angle for the rectangle

3. third point: determination second side (height?)

I’m asking for an additional new tool? No - just as an option to the existing rectangle tool ...

Add a button to edit the block beside the block combo box that is shown when showing the properties of a block reference.

When printing from the preview mode a standard Windows popup shows, letting me select the printer, number of copies and a page range. Unfortunately QCAD (or Windows) ignores the page range - it always prints all pages. So right now I always have to copy the parts I want to print, page them into a separate document and print that instead - even though I got all my stuff nicely lined up for printing on multiple pages.

Would be nice, if in print preview QCAD rulers would switch to paper dimensions. Chat here http://www.qcad.org/rsforum/viewtopic.php?f=89&t=3793

After all, print preview is not just the drawing on white, isn’t it? Everything else should stay in drawing units. Just the rulers, maybe a preference?

Often in print preview I need to move the paper around and position it with the ‘Move Paper Position’ tool, which is useful, but what would be an additional extra useful option would be a ‘Place Paper Here’ tool.

Then I could simply use this tool first and then use the ‘Move Paper Position’ tool afterwards to fine tune things!

If you look at the attached image you will see that in this students file they have got their drawing spread out all over the place:(

See:
http://www.ribbonsoft.com/rsforum/viewtopic.php?t=1867

Apparently this was possible in QCAD 2 due to the default behavior of Qt.

Hi,

unfortunately I need to use from time to time different Units in a drawing. It works nice with the Scale possibility but to keep my drawing readable I need to label then the DIM accordingly. Sadly I don’t have a Postfix option so I work with a workaround what means I use <>”, or <>’ and <>mm in the Prefix field. If I then terminate the DIM tool and start it again I will loose my settings except the Scale Factor.

May I ask for an additional Postfix option or/and a remember functionality of those fields?

Post processor “LaserGBRL (offset) [mm] fails to turn off/on (M5, M4) at Tabs.

Forum topic:
https://www.qcad.org/rsforum/viewtopic.php?f=85&t=9552&p=38496#p38495

It would be nice and helpful if we had the possibility to control the order of Attributes - shown in the property editor.
I found a solution for myself with using numbers in the Attribute definition tag - but that isn’t really a nice solution.
If I could hide my numbering ... everything would be fine for me ....

Upon activating the Polygonal Area Tool either by clicking on the toolbar or by the IR keyboard shortcut the tool will persistently draw a polygon without clicking anything. This happens with the mouse and the trackpad on the MacBook Pro. This was happening in 3.29.3, and then after I upgraded to 3.29.4. The MacOS version is 14.1 Sonoma.

Windows 7 pro 32 bit msi-Installer
Version: 3.26.4.5 (3.26.4.5)
Internet: QCAD.org
Build Date: Jul 20 2021
Revision: e596276
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Andrew,

In the attached dxf:
Besides that it is clear that duplicate vectors are not filtered ...
Where a segment is crossing in another node a non valid node is returned as self-intersection point.
Seems to be unrelated to CW/CCW or tolerance.

Where 2 nodes coexists 4 duplicate vectors are returned.

Regards,
CVH

Input:

1. X axis min/max or choose line (?) or center (for polar functions)
2. function: y = f(x) / polar function: r = f(a)

Output:

1. function plot

Yes I’m aware that the U.S. survey foot has to be discontinuing December, 31, 22. However - as we’ve learned in the past it takes decades until a unit will disappears for good.

See also:

https://www.qcad.org/rsforum/viewtopic.php?f=8&t=9493&p=38245#p38245

It would be useful to have a persistent selection button added to the ‘selection’ tool set.

This would allow the user to set persistent selection as and when needed for the current drawing one is working on, rather than going the long route through the ‘Application’ preferences dialog.

Scenario:

Drawing 1: Blockname X is part of a selection, I copy this selection into the clipboard to use it in an other drawing.

Switch to Drawing 2, this drawing has also a Blockname X but with a different content.

Use the clipboard paste function - the clipboard content will be modified (only the Block) by the drawing 2 block content.

No warning pops up - it just happens!

Some functions / methods can generate some sort off entity or part with NaN / Null / Null-lenght ... props.
Some explicitly don’t and test their actions with isNull().

As these serve a purpose in some processes, trails of them can be part of the results.
For some users Null / Null-lenght are meaningfull, for other users these produce errors down the line.
In a few cases its a desirable feature eg. controlpoint spline.
(Allthough there are no Null props involved with equal successively controlpoints)

Many problem post on the forum are related to Null - Zero and so on.

In some cases it can’t be undone by re-editing the drawing.
https://qcad.org/bugtracker/index.php?do=details&task_id=1925

If it can’t be undone by Undo/Redo it is a bug.
https://qcad.org/bugtracker/index.php?do=details&task_id=1757

In some cases there is a difference noticed after file save-close-open.

Hi,

I use eagle cad for pcb designs and I like its ability to snap to finer snap to grid when pressing option button (ALT in windows).
I am fine with auto grid setting, however, it would be good to also have a way to access finer grid when pressing down option button.

For example, when zoomed out, grid is 100mm apart.
When pressing down on the option button (ALT in windows), grid switches to finer 10mm.
This will save me time, zooming in to access finer grid to snap to.

See:
https://qcad.org/rsforum/viewtopic.php?&t=6827&p=25992#p25992

Offsetting 32 polys from ellipses fails.
Offsetting 16 polys can be completed with 2 selections for outer and 2 for inner.

For some reason the offset function halts premature.

Regards,
CVH

When I’m drawing inside a layout block the offset tool picks up lines from blocks that are hidden.
It is not happening with all the block.

It would be really cool to have a Note book tool for QCAD!

For example I am often working on a draft and at the same time scribbling notes down on a separate piece of paper relating to the drawing I am working on, could be anything e.g. add a block,add a dimension etc. etc... all sorts of things to remind myself about - all related to a particular drawing.

Of course I could use any number of other programs for this but a simple dedicated tool inside QCAD (could be called the ‘QCAD scribbler ;)) would be much better, especially one that can save the notes to a particular file, then when I open up my drawing again - my notes are there too!

Just starting with QCAD, for some hours now - really excellent user interface (compared to other low budget CADs, like DCAD, or BeckerCAD...) !

Surprisingly, point coordinates - entered via the command line, and shown with correct positions on the drawing- are not displayed correctly with the ‘dimordinate’ (DO) command.
There are no negative values, even when the center point (0;0) is right in the middle of the drawing, so points left and below should have !

GW.G

Hi,

I use a lot of “temp” layer to keep my drawing organized during a design session. Ad the end of the day (or week or month ...) I need to get rid of this “garbage” but unfortunately there is no easy way to delete all this layer in one go.
Most of the time those layer are invisible. The “important layer” are visible. If I could toggle all layer from visible in invisible in one go with a switch like “Toggle visible layer all” and then use “Select all” / delete / Purge unused layer I’m able do get rid of this stuff with just a few clicks.

The same tool would help to improve the workflow in the case that I just have to switch between all visible / invisible layer for testing / double checking / cleaning or what ever. Currently I have to toggle every single layer to get this done and if I work with many layer I need to have a perfect working memory (or a piece of paper with many notes!) to be able to restore the same desired working order.

And I’m confident - there are many more useful scenarios for a tool like this one ...

pics: “Toggle visibility all” with one click:

Could it be possible to add a simple function to add a new empty drawing (like File > New) to Simple.js ? Thank you. (PS, this simple.js API is awesome, btw :D)

( I already have my own to simplify my scripts, but it does not seem to work correctly if I set action.setRequiresDocument(false); in the init functions
See more at http://www.qcad.org/rsforum/viewtopic.php?f=32&t=4203#p15203 )

“Paste” has already the options: To current layer, Overwrite layers, Overwrite blocks.

Would be a nice time saver to have the same options for “Paste along Entity” too.

The modify stretch tool wants first and second corner, start and end point, then starts afresh. When I turn on restrict horizontally eg to align two points between start and end, the restriction sticks and I have to call restrict none, to be able to perform the next iteration, set the first corner then.

So, in the quest for a comfortable user interface, it was nice, if the modify stretch first/second corners parameter setting was not affected by current restrict/ortho etc. settings. Actually, that does not make any sense at all anyways, does it, a rectangle is defined by two degrees of freedom, isnt it?

QCAD Professional

Version: 3.25.2.4 (3.25.2.4)
Internet: QCAD.org
Build Date: Nov 18 2020
Revision: 40f4475
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Use TM by mistake to trim a line to a closed shape.
Topic: https://qcad.org/rsforum/viewtopic.php?f=33&t=7780
File included in the topic.
Y1 Original
Y2 Faulty use of TM
Y3 After ‘Undo’

Husky only ‘could agree on a not proper working undo’
The conditional clause of this sentence is ‘the odd choice’.
Blaming this on incompetence.
Insight is the best way to get better ...
... but the rest is more an odd choice of tools for this kind of task ...

Again, the MISTAKE was by accident, not intended, in a flick of the wrist ...
I didn’t change the trimming method, I simply forgot to ... only once.

The ‘undo’ of my incompetent MISTAKE didn’t returned to how the situation was before I erroneous trimmed with TM.
I was simply undoing my erroneous action.

Documented it in 4 quadrants.
For this, 4 times on purpose, and not as a consistent ‘odd choice’.

Regards,
CVH

See also:
http://www.qcad.org/rsforum/viewtopic.php?f=31&t=4256

Headline should already explain the issue ...

QCAD Professional
Windows 7; Win installer 32 bit
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

Forum Topic: https://qcad.org/rsforum/viewtopic.php?t=7988
File included.
I have no intention to make 48 separate reports.

CVH

The tool “Clip to rectangle” / “Cut at Area Boundary” tool used on an area with lines and arcs will partly complete arcs to circles.