KeyPress function on data rather on figure
4 次查看(过去 30 天)
显示 更早的评论
Hi,
I am trying to implement a key-press function for basically a fly through scene, i.e. updating the cam target and cam pos through a patched surface.
However, the key-press is acting on the figure itself instead of the plotted data. Is there another way to implement it/what am I doing wrong?
Thanks, Ali
Example code:
patch_fig=figure;
p=patch('Faces',faces,'Vertices',vertices,'FaceColor','red');
set(patch_fig,'KeyPressFcn',{@fh_keypress_handle, patch_fig});
%%function%%
function fh_keypress_handle(H,E,patch_fig)
hAx=gca;
[cPosition, cTarget, cViewAngle, cViewVector, cRightVector, cUpVector] = getcamerageometry(hAx);
current_pos = campos(hAx);
current_camtarget = camtarget(hAx);
switch E.Key
%%Move in x direction
case 'uparrow'
if isempty(E.Modifier)
campos(current_pos + cViewVector);
camtarget([current_camtarget+cViewVector]);
camlight(hlight,'headlight')
case 'downarrow'
if isempty(E.Modifier)
campos(current_pos - cViewVector);
camtarget([current_camtarget-cViewVector]);
end
0 个评论
回答(2 个)
Walter Roberson
2017-2-7
You should probably use a figure WindowKeypressFcn callback instead of a figure KeyPressFcn. The KeyPressFcn has the tendency to give typing focus to the figure.
But first alter all of your cam* calls to pass in the axes. And instead of fetching the axes using gca(), pass it in instead of patch_fig (which is not used in your routine.)
3 个评论
Walter Roberson
2017-2-7
The axes can go as the first argument to the cam* calls.
I would fix the axes stuff up first before switching to WindowKeyPressFcn; you might not have to switch that.
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Graphics Object Programming 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!