Computing distance between between 2 point of a 3D figure using datacursor

问题

I am building a GUI that plot a 3D figure by pressing button. I am trying to return a distance value between 2 points when I select the 2 points using datacursormode on the figure. I know the formula to calculate the distance, but I don't know how to make the data cursor return the (X,Y,Z) value of the 2 points selected.

Thanks.

回答1:

%// retrieve the data cursor manager for the figure  
dcm = datacursormode(gcf) ;

%// get all the datatips information in a structure  
dtip_info = dcm.getCursorInfo ;

%// extract the coordinates of each data tip from the structure  
Coordinates_Datatip1 = dtip_info(1).Position ;  
Coordinates_Datatip2 = dtip_info(2).Position ;

---

This assume you already have 2 datatips in the current figure. Each "Coordinates_Datatip" variable will contain 3 scalar values x,y and z position of your datatips.

来源：https://stackoverflow.com/questions/22691417/computing-distance-between-between-2-point-of-a-3d-figure-using-datacursor