Drag and Drop Custom Blocks on UIAxes in MATLAB

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Fawad Farooq Ashraf 2023-12-2

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回答： Voss 2023-12-21

Hello. I'm trying to build an app on the MATLAB App Designer. The app is about Path Planning and Path Following of a Ground Vehicle. The thing is that in the Path Planning Algorithm, I want to add certain Obstacles (explained in the figure below), and then the algorithm will find the optimal path accordingly.

What I want is to make these movable. Or maybe to pick and drop from a sidebar? Is it possible to do so that I can place obstacles wherever I want?

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Ayush Singh 2023-12-21

Hi Fawad,

I understand you want to add movable objects in the UI axes.

Can you let me know that do you want them to move randomly or based on some mouse movement or key press?

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Answer 1

Voss 2023-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/2055399-drag-and-drop-custom-blocks-on-uiaxes-in-matlab#answer_1375717

"What I want is to make these movable. Or maybe to pick and drop from a sidebar? Is it possible to do so that I can place obstacles wherever I want?"

All of those things are possible. You will need to define the UIFigure's WindowButtonDownFcn, WindowButtonMotionFcn, and WindowButtonUpFcn. See the "Window Callback" section of this page: https://www.mathworks.com/help/matlab/ref/matlab.ui.figureappd-properties.html

Good luck!