force.vertex[1]['is_param'] = True
force.vertex[2]['is_param'] = True
force.vertex[3]['is_param'] = True
force.vertex[4]['is_param'] = True
force.vertex[5]['is_param'] = True
force.vertex[6]['is_param'] = True
form.vertex[0]['is_fixed'] = True
form.vertex[1]['is_fixed'] = True
form.vertex[2]['is_fixed'] = True
form.vertex[3]['is_fixed'] = True
form.vertex[4]['is_fixed'] = True
form.vertex[5]['is_fixed'] = True
form.vertex[6]['is_fixed'] = True
graphstatics.form_update_from_force(form, force)
loadpath.optimise_loadpath(form, force)
viewer = Viewer(form, force, delay_setup=False)
viewer.draw_form(forcescale=5,
vertexlabel={key: key
for key in form.vertices()},
vertexsize=0.2)
viewer.draw_force(vertexlabel={key: key
for key in force.vertices()},
vertexsize=0.2)
viewer.show()
for u, v in force.edges():
force_lines.append({
'start': force.vertex_coordinates(u, 'xy'),
'end': force.vertex_coordinates(v, 'xy'),
'width': 1.0,
'color': '#cccccc',
'style': '--'
})
# modify the geometry of the force diagram
force.vertex[1]['x'] -= 5.0
# update the formdiagram
graphstatics.form_update_from_force(form, force, kmax=100)
# add arrow to lines to indicate movement
force_lines.append({
'start': force_key_xyz[1],
'end': force.vertex_coordinates(1),
'color': '#ff0000',
'width': 10.0,
'style': '-',
})
# display the orginal configuration
# and the configuration after modifying the force diagram
viewer = Viewer(form, force, delay_setup=False)