https://bugs.kde.org/show_bug.cgi?id=520066
Bug ID: 520066
Summary: Measuring in blueprints / arbitrary ruler calibration
Classification: Applications
Product: kruler
Version First unspecified
Reported In:
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
I would like to request a feature that allows KRuler to be calibrated to
arbitrary real-world values instead of only screen pixels or predefined units.
Example use case:
A user opens a floor plan, map, technical drawing, or scanned document on
screen containing a known reference distance, for example a wall with a known
length of 5 meters.
The user could then:
* place the ruler over the reference object,
* manually enter the real-world length (e.g. 5 m),
* and KRuler would internally calculate the scale factor.
Then the user could move the ruler over the plan and measure out different
objects on screen, being shown their relative length. E.g. an object with 2/5
the length of the ruler would be shown as "2" (or even "2m") when the ruler is
moved to its start and the cursor moved to the objects end.
Right now this is possible by calculating the scale factor by hand and then
having the calculator to the side. Implementing this feature request would
remove several extra steps and make KRuler a very versatile tool for measuring
on scans or architectural drawings.
The user could even measure real objects by once measuring the width of his
screen and later without measurement tool using this feature to set the length
and then holding a real world object against his screen.
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