Controlling the perspective of drawing

[mitsuaki1987]

(2021-07-27 23:10 by simon_rss )
Dear developers,

The fermisurfer always show fermi surface in BZ with obvious perspective. Is it possible to add an option to control the perspective so that I can adjust it even completely switch it off to get views like xcrysden(edge of BZ are visually parallel).

I played with gluPerspective function in operation.cpp. If I set a very small first parameter, after open file, I have to adjust scale much and then I can see a view almost without perspective. But anyway, that is not a satisfactory solution, and I don't full understand gluPerspective function.

best regards

[mitsuaki1987]

(2021-08-07 01:56 by mitsuaki1987 )
Dear simon_rss

alternative to

gluPerspective(30.0, (GLfloat)event.GetSize().x / (GLfloat)event.GetSize().y, 1.0, 100.0);

in operation.cpp, please put

glOrtho(-1, 1, -(GLfloat)event.GetSize().y / (GLfloat)event.GetSize().x, (GLfloat)event.GetSize().y / (GLfloat)event.GetSize().x, 1.0, 100.0);

As you said, it is better to add the option to turn on/off the perspective.

Best regards,
Mitsuaki Kawamura