#GET MOUSE COORDINATES JAVA HOW TO#

After testing, the coordinates extracted by moving the mouse event are accurate. Normally, the return value of sigMouseClicked is an event, which contains the coordinates of the click time, but this coordinate is inaccurate, which is somewhat different from the actual position. # After capturing the click event, you need to do the action in mouse_ Completed in the clicked functionД«) Get the coordinates corresponding to the graphic position when the mouse clicks. The main code is as follows: # Capture mouse click events In practice, I also divide this part into two steps: a) capture the mouse click signal.

#GET MOUSE COORDINATES JAVA HOW TO#

I haven't used pyqt before, so I don't know how to capture the mouse click signal, let alone extract the corresponding position coordinates. (self.updateData)ДЈ) Left click the drawing interface to add a new point. # Start the timer and notify to refresh the data every 100ms # Give the X and Y coordinates of points and draw a scatter diagramДў) After the number of nodes or coordinates change, the position can be updated in real time. Self.scatter = .plot(pen=None, symbol='o') My requirements are mainly divided into the following parts: 1) Given the node coordinates, it can be displayed in the form of scatter diagram. I learned from the online code, combined with my own needs, and finally realized the functions I needed. After a search, I found that pyqt seemed to meet my needs, and I could find some relevant code. It feels that matplotlib completely depends on data-driven (that is, it can draw pictures by providing data), but it can not realize the two-way interaction between users and graphics (that is, users can generate new points by clicking with the mouse). However, it seems that it can not achieve the functions I need.

In ordinary python drawing, my commonly used tool is matplotlib.

In a recent project, the required function is to use the mouse to add nodes (the position where the mouse clicks is the node coordinates), and the point coordinates can be displayed visually and dynamically after being added. 1) Problem motivation and usage scenarios

Get mouse coordinates java