source: trunk/src/angle2normal.m @ 1147

Last change on this file since 1147 was 1108, checked in by sommeria, 3 years ago

phys_XYZ modified for angular scan

File size: 592 bytes
RevLine 
[1078]1%calculate the components of the unit vector norm_plane normal to the plane
2%defined by the rotation vector PlaneAngle (in degree)
[1108]3% this gives the equation of the plane as norm_plane(1)x + norm_plane(2)y +norm_plane(3)z = cte
[1078]4
[1080]5function norm_plane=rotate(PlaneAngle)
6
[1078]7om=norm(PlaneAngle);%norm of rotation angle in degrees
8OmAxis=PlaneAngle/om; %unit vector marking the rotation axis
9cos_om=cos(pi*om/180);
10sin_om=sin(pi*om/180);
11coeff=OmAxis(3)*(1-cos_om);
12norm_plane(1)=OmAxis(1)*coeff+OmAxis(2)*sin_om;
13norm_plane(2)=OmAxis(2)*coeff-OmAxis(1)*sin_om;
14norm_plane(3)=OmAxis(3)*coeff+cos_om;
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