dt_rotate

Daylight v4.9
Release Date: 1 February 2008

Name

dt_rotate - rotate the coordinates of an object

Generic Prototype

dt_rotate(dt_Handle, dt_Real, dt_Real, dt_Real, dt_Real) => dt_Boolean

C Prototype

#include "dt_depict.h"

dt_Boolean dt_rotate(dt_Handle object, dt_Real dx, dt_Real dy, dt_Real dz, dt_Real rot_angle)

FORTRAN Prototype

include 'dt_f_depict.inc'

logical dt_f_rotate(object, dx, dy, dz, rot_angle)

integer*4 object
real*4 dx
real*4 dy
real*4 dz
real*4 rot_angle

Description

Modifies the (x,y) or (x,y,z) coordinates of a depiction or conformation 'object' by rotating the x, y, and z coordinates of each atom by the angle 'rot_angle' around the vector (dx, dy, dz). The angle of rotation 'rot_angle' is expressed in radians. The direction of the angle is given by the right-hand rule: if you curl your fingers around the vector with your thumb pointing in the direction of the vector, your fingers curl around in the direction of positive 'rot_angle'.

If 'object' is a depiction, dx, dy, and dz are ignored. Rotation occurs around the origin, with positive 'rot_angle' corresponding to counterclockwise rotation.

Return Value