def MatchRotation(Obj, Target):
T = Target.Kinematics.Global.Transform
O = Obj.Kinematics.Global.Transform
R = XSIMath.CreateRotation()
T.GetRotation(R)
O.SetRotation(R)
Obj.Kinematics.Global.Transform = O
def GetOrientationFromPickPosition(pos):
if isinstance(pos, list) and len(pos) > 1:
rot = []
vm = XSI.Desktop.ActiveLayout.Views("vm")
focus = vm.GetAttributeValue("focusedviewport")
if focus:
cam = vm.GetAttributeValue("activecamera:" + focus)
else:
cam = "Right"
y = XSIMath.CreateVector3(0, 1, 0)
if cam == "Right":
y.Set(1, 0, 0)
elif cam == "Top":
y.Set(0, 1, 0)
elif cam == "Front":
y.Set(0, 0, 1)
else:
x1 = XSIMath.CreateVector3()
x2 = XSIMath.CreateVector3()
x1.Sub(pos[1], pos[0])
x2.Sub(pos[len(pos) - 1], pos[len(pos) - 2])
y.Cross(x1, x2)
y.NormalizeInPlace()
for idx in range(len(pos) - 1):
start = pos[idx]
end = pos[idx + 1]
delta = XSIMath.CreateVector3()
delta.Sub(end, start)
'''
n = AddNull(xsi.ActiveSceneRoot,4,1,"Start")
t = n.Kinematics.Global.Transform
t.SetTranslation(start)
n.Kinematics.Global.Transform = t
n = AddNull(xsi.ActiveSceneRoot,4,1,"End")
t = n.Kinematics.Global.Transform
t.SetTranslation(end)
n.Kinematics.Global.Transform = t
'''
r = GetRotationFromTwoVectors(delta, y)
rot.append(r)
# duplicate the last array item
rot.append(rot[len(rot) - 1])
return rot
else:
return XSIMath.CreateRotation()
def GetRotationFromTwoVectors(direction, up=XSIMath.CreateVector3(0, 1, 0)):
cross = XSIMath.CreateVector3()
side = XSIMath.CreateVector3()
direction.NormalizeInPlace()
up.NormalizeInPlace()
cross.Cross(direction, up)
cross.NormalizeInPlace()
side.Cross(cross, direction)
side.NormalizeInPlace()
m = XSIMath.CreateMatrix3()
m.Set(cross.X, cross.Y, cross.Z, direction.X, direction.Y, direction.Z,
side.X, side.Y, side.Z)
r = XSIMath.CreateRotation()
r.SetFromMatrix3(m)
return r