MATLAB: How to get starting and ending point of mouse cursor

current pointmouse movement

I need to calculate the difference between the initial point and the point where the mouse cursor is while the mouse is moving. What I'm doing now is that I've calculated the rotation matrix, and all I have to do is to click the mouse at one point and move the mouse around.This action will rotate the image, at the same time, while moving the mouse. Only when I let go, the image will stay at the resulted image.

I've done something similar to http://www.mathworks.com/help/techdoc/ref/rbbox.html. But I don't want the 'finalRect=rbbox'

Does anyone know how to remove the rectangle rubberband, and the 2 current point remain the same?

Best Answer

http://www.mathworks.com/help/techdoc/ref/figure_props.html#WindowButtonMotionFcn

Related Solutions

MATLAB: Coordinates related to rbbox in GUI

You could just do like the example in RBBOX, and use the currentpoint property of the axes instead...

figure;
pcolor(peaks);
k = waitforbuttonpress;
point1 = get(gca,'CurrentPoint');    % button down detected
finalRect = rbbox;                   % return figure units
point2 = get(gca,'CurrentPoint');    % button up detected
point1 = point1(1,1:2);              % extract x and y
point2 = point2(1,1:2);
p1 = min(point1,point2);             % calculate locations
offset = abs(point1-point2);         % and dimensions
x = [p1(1) p1(1)+offset(1) p1(1)+offset(1) p1(1) p1(1)];
y = [p1(2) p1(2) p1(2)+offset(2) p1(2)+offset(2) p1(2)];
hold on
axis manual
plot(x,y,'r','linewidth',5)          % draw box around selected region

MATLAB: Is the selected boundary to zoom in on a figure re-scaled to the axes ratio of the current figure

A MATLAB command does not exist to suppress the zoomed boundary and re-scale the figure axes.

A possible workaround is the following:

Save the following MATLAB function to 'zoomAspect.m'

function zoomAspect
k = waitforbuttonpress;
point1 = get(gca,'CurrentPoint');    % button down detected
finalRect = rbbox;                   % return figure units
point2 = get(gca,'CurrentPoint');    % button up detected
point1 = point1(1,1:2);              % extract x and y
point2 = point2(1,1:2);
p1 = min(point1,point2);             % calculate locations
p2 = max(point1,point2)
P = [p1; p2]
set(gca,'XLim',P(:,1),'YLim',P(:,2),'DataAspectRatio',[1 1 1])

Try the following MATLAB code which creates a figure with a push button. Press the push botton and zoom in on a reactangular part, the figure will be re-scaled.

x = 0:0.1:10;
y = x.^2;
plot(x,y);
set(gca,'DataAspectRatio',[1 1 1],'PlotBoxAspectRatio',[1 1 1]);
uicontrol('style','pushbutton','Callback','zoomAspect','String','Zoom');

Best Answer

Related Solutions

MATLAB: Coordinates related to rbbox in GUI

MATLAB: Is the selected boundary to zoom in on a figure re-scaled to the axes ratio of the current figure

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