https://bugs.kde.org/show_bug.cgi?id=473287
Bug ID: 473287
Summary: Unable to control direction of a vector or the center
of a circle when constructions involve loci?
Classification: Applications
Product: kig
Version: 23.04.3
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: david.narv...@computer.org
Reporter: eb3f73+kde+...@yaymail.com
Target Milestone: ---
Created attachment 160907
--> https://bugs.kde.org/attachment.cgi?id=160907&action=edit
Drawing showing constructions identified in steps above
SUMMARY
I want to construct a circle using center-and-point using two existing points
(one of which is a loci). No matter which order I select the two points, the
center is always on the loci, and it's not clear how to change that. I noticed
a similar behavior with vectors. If I select two points and try to construct a
vector, the loci is always the origin of the vector (again, regardless of the
order the points are selected).
STEPS TO REPRODUCE
1. Create and select two points
2. Construct (right click) a first circle using center-and-point
3. With the points selected, construct a line segment (radius)
4. Create a third point
5. Select the third point and the radius line segment and construct a point
projection
6. Select the third point and the point projection
7. Construct a vector
8. Select the center of the first circle and the point projection
9. Construct a second center-and-point circle
OBSERVED RESULT
The direction of the vector always originates at the point projection. The
center of the second circle is always at the point projection. There is no
(clear) way to reverse the direction of the vector (such that it originates
from the third point). There is no (clear) way to reverse the orientation of
the second circle so that it is concentric with the first circle.
EXPECTED RESULT
I expected there to be some semi-obvious way to designate which of two points
should be the center of a constructed circle or which of two points should be
the origin of a constructed vector.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu LTS 22.04 (running Kig via flatpak)
KDE Plasma Version: ???
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
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