core/XYZ_Decorator.py

This is a simple example using the XYZDecorator to set the coordinates of some particles and compute the distance between them.

## \example core/XYZ_Decorator.py
# This is a simple example using the XYZDecorator to set the coordinates
# of some particles and compute the distance between them.

import IMP
import IMP.core
import IMP.algebra

m = IMP.kernel.Model()
p0 = m.add_particle("xyz0")
# add x,y,z coordinates to the particle
d0 = IMP.core.XYZ.setup_particle(m, p0, IMP.algebra.Vector3D(0, 1, 2))
p1 = m.add_particle("xyz1")
# add slots for the coordinates, but leave them uninitialized
d1 = IMP.core.XYZ.setup_particle(m, p1)
# set the coordinate values
d1.set_coordinates(IMP.algebra.Vector3D(3, 4, 5))

# return the distance between the two points described by the decorated
# particles
print(IMP.core.get_distance(d0, d1))