def _update_text(self):
"""
Update curve-specific text
"""
self.text.set_translation(TupleMath.mean(self.coordinates))
self.text_center = self.center
self.set_text_translation((0.0, 0.0, 0.0))
def setup_drag_references(self, nam):
"""
Set parameters to be referenced during on_drag operations
"""
_drag_ctr = self.arc.start
_bearing = self.arc.bearing_in
_origin = None
if 'center' in nam or 'arc' in nam:
_drag_ctr = self.arc.center
_bearing = TupleMath.bearing(
TupleMath.subtract(tuple(self.arc.pi), tuple(self.arc.center)))
if 'arc' in nam:
_l = len(self.arc.points)
_l_2 = int(_l / 2)
_drag_ctr = self.arc.points[_l_2 - 1]
if (_l % 2):
_drag_ctr = TupleMath.mean(_drag_ctr,
self.arc.points[_l_2])
_drag_ctr = self.arc.center
self.drag_start_point = self.arc.center
_origin = self.arc.center
elif 'end' in nam:
_drag_ctr = self.arc.end
_bearing = self.arc.bearing_out
self.drag_center = _drag_ctr
if not _origin:
_origin = _drag_ctr
#generate constraint geometry along an axis defined by the bearing
while _bearing > math.pi:
_bearing -= math.pi
self.drag_axis = (1.0, 1.0 / math.tan(_bearing), 0.0)
Drag.drag_tracker.set_constraint_geometry(self.drag_axis, _origin)