- Coordinate system & header description
- Supported image formats: img. Use em2em for conversion.
- Image center convention: ( IXMID , IYMID ) = ( NX/2 + 1 , NY/2 + 1 )
- Euler angles: (gamma,beta,alpha). Positive rotations of object are COUNTER-clockwise: this is because by default IMAGIC rotates towards specified angle, i.e. by -"angle". Projection direction is defined by (gamma,beta). Alpha is in-plane rotation for tilted image. For untilted alpha=gamma=in-plane rotation
- Rotation matrix:
[[cos gamma,sin gamma, 0],[-sin gamma,cos gamma,0],[0,0,1]]
[[1,0,0],[0, cos beta, sin beta],[0, -sin beta, cos beta]]
[[cos alpha,sin alpha, 0],[-sin alpha,cos alpha,0],[0,0,1]]