https://forum.qt.io/topic/134288/custom-coordinate-system-using-qgraphicsview-qgraphicsscene-and-qgraphicsrectitem
Custom coordinate system using QGraphicsView, QGraphicsScene and QGraphicsRectItem | Qt Forum
Feb 15, 2022 - Dear Qt community, In the past days I've been struggling to implement a simple graphical tool which will draw rectangles next to each other in real time, all...
coordinate systemcustomusingqtforum
https://doc.qt.io/qt-6/ja/qgraphicsscene.html
QGraphicsScene Class | Qt Widgets | Qt 6.11.0
The QGraphicsScene class provides a surface for managing a large number of 2D graphical items.
classqtwidgets