Axis rotation matrices

Methods for 3D rotation about an axis or vector. More...

Functions
void	initialize_rotation_matrix (BTKVector const &axis, double theta, BTKMatrix &rm)
	Initialize a pre-existing rotation matrix for rotation about an axis.
BTKMatrix	create_rotation_matrix (BTKVector const &axis, double theta)
	Create a rotation matrix for a rotation about an axis.

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Detailed Description

Methods for 3D rotation about an axis or vector.

These methods allow the rotation of objects around a vector or axis in 3D space. All angles are specified in radians, unless otherwise noted.

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Function Documentation

BTKMatrix BTK::MATH::create_rotation_matrix	(	BTKVector const &	axis,
		double	theta
	)

Create a rotation matrix for a rotation about an axis.

Given an axis of rotation (expressed as a vector), and an angle of rotation (in radians) about that axis, intialize a rotation matrix. For methods to apply rotations to atoms and molecules, see Rigid-body molecular transformations.

void initialize_rotation_matrix	(	BTKVector const &	axis,
		double	theta,
		BTKMatrix &	rm
	)

Initialize a pre-existing rotation matrix for rotation about an axis.

Given an axis of rotation (expressed as a vector), and an angle of rotation (in radians) about that axis, intialize a rotation matrix. For methods to apply rotations to atoms and molecules, see Rigid-body molecular transformations.

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