Matlab App: Get cursor position in axis continuously, keep plot interactivity

18 次查看(过去 30 天)
Hi there,
I'm trying to create a matlab app in which users can create geometric objects and use them for some calculations later.
These are displayed in a 3D axis, rotated slightly. I am trying to create user functions to draw lines inside that axis. For this, I wan to implement continuously displayed x,y coordinates, or crosshairs or similar, as well as data snapping. Users will only draw 2D objects on the x,y plane. I still want users to be able to rotate the plot, zoom and pan normally with the mouse.
If I use a WindowButtonMotionFcn, then I lose plot interactivity with the mouse. If I use other means of getting the cursor position, like java.awt.MouseInfo.getPointerInfo().getLocation() and getpixelposition() or similar gui coordinate functions, I have to deal with a rotated camera and axis transformation. This makes "hit detection" on the data very cumbersome.
Using axes.CurrentPoint seems useless, because it only updates when the mouse is clicked, not continuously.
Any ideas on how to do this?
  1 个评论
Oliver Jaehrig
Oliver Jaehrig 2025-4-10
The CurrentPoint property gets continuosly updated when:
"Move the mouse within the figure (without pressing any buttons), as long as the WindowButtonMotionFcn property is not empty."
see:
would this help you to solve your issue? Can you explain further what you mean by:
"WindowButtonMotionFcn, then I lose plot interactivity with the mouse"?

请先登录,再进行评论。

回答(1 个)

Kevin Holly
Kevin Holly 2025-4-10
Would something like the app attached work for the 2D drawing? The user can still zoom in, out, and pan. However, they cannot place a marker while actively zooming or panning. You could add a condition to toggle the zoom (e.g. zoom(ax,'on') or zoom(ax,'off') ).

类别

Help CenterFile Exchange 中查找有关 Data Exploration 的更多信息

产品


版本

R2024b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by