Differential D3668 Diff 11765 doc/python_api/examples/mathutils.Quaternion.py

Changeset View

Standalone View

doc/python_api/examples/mathutils.Quaternion.py

	Show All 9 Lines

	print("Check quaternions match", quat_a == quat_b)			print("Check quaternions match", quat_a == quat_b)

	# like matrices, quaternions can be multiplied to accumulate rotational values			# like matrices, quaternions can be multiplied to accumulate rotational values
	quat_a = mathutils.Quaternion((0.0, 1.0, 0.0), math.radians(90.0))			quat_a = mathutils.Quaternion((0.0, 1.0, 0.0), math.radians(90.0))
	quat_b = mathutils.Quaternion((0.0, 0.0, 1.0), math.radians(45.0))			quat_b = mathutils.Quaternion((0.0, 0.0, 1.0), math.radians(45.0))
	quat_out = quat_a * quat_b			quat_out = quat_a * quat_b

	# print the quat, euler degrees for mear mortals and (axis, angle)			# print the quat, euler degrees for mere mortals and (axis, angle)
	print("Final Rotation:")			print("Final Rotation:")
	print(quat_out)			print(quat_out)
	print("%.2f, %.2f, %.2f" % tuple(math.degrees(a) for a in quat_out.to_euler()))			print("%.2f, %.2f, %.2f" % tuple(math.degrees(a) for a in quat_out.to_euler()))
	print("(%.2f, %.2f, %.2f), %.2f" % (quat_out.axis[:] +			print("(%.2f, %.2f, %.2f), %.2f" % (quat_out.axis[:] +
	(math.degrees(quat_out.angle), )))			(math.degrees(quat_out.angle), )))

	# multiple rotations can be interpolated using the exponential map			# multiple rotations can be interpolated using the exponential map
	quat_c = mathutils.Quaternion((1.0, 0.0, 0.0), math.radians(15.0))			quat_c = mathutils.Quaternion((1.0, 0.0, 0.0), math.radians(15.0))
	exp_avg = (quat_a.to_exponential_map() +			exp_avg = (quat_a.to_exponential_map() +
	quat_b.to_exponential_map() +			quat_b.to_exponential_map() +
	quat_c.to_exponential_map()) / 3.0			quat_c.to_exponential_map()) / 3.0
	quat_avg = mathutils.Quaternion(exp_avg)			quat_avg = mathutils.Quaternion(exp_avg)
	print("Average rotation:")			print("Average rotation:")
	print(quat_avg)			print(quat_avg)