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calculate instead of follow_path

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jrkb 2024-07-01 14:39:07 +02:00
parent d081d1d42d
commit 62e6c63a61
3 changed files with 82 additions and 16 deletions
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42
butils.py
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@ -30,14 +30,14 @@ def get_parent_collection_names(collection, parent_names):
# Ensure it's a curve object
# TODO: no raising, please
def get_curve_length(curve_obj, num_samples = 100):
def get_curve_length(curve_obj, resolution = -1):
total_length = 0
curve = curve_obj.data
# Loop through all splines in the curve
for spline in curve.splines:
total_length = total_length + spline.calc_length()
total_length = total_length + spline.calc_length(resolution=resolution)
return total_length
@ -74,8 +74,8 @@ def align_rotations_auto_pivot(mask, input_rotations, vectors, factors, local_ma
old_rotation = input_rotation.to_matrix()
old_axis = (old_rotation @ local_main_axis).normalized()
new_axis = vector
# rotation_axis = (-(old_axis) + new_axis).normalized()
rotation_axis = old_axis.cross(new_axis).normalized()
rotation_axis = (-(old_axis) + new_axis).normalized()
# rotation_axis = old_axis.cross(new_axis).normalized()
if rotation_axis.length < 1e-6:
# Vectors are linearly dependent, fallback to another axis
@ -163,7 +163,7 @@ def calc_point_on_bezier_spline(bezier_spline_obj,
if iterated_distance + lengths[i] > distance:
distance_on_bezier = (distance - iterated_distance)
d = distance_on_bezier / lengths[i]
print(f"i: {i}, d: {d}, distance_on_bezier: {distance_on_bezier}, distance: {distance}")
# print(f"i: {i}, d: {d}, distance_on_bezier: {distance_on_bezier}, distance: {distance}")
location = calc_point_on_bezier(beziers[i][0],
beziers[i][1],
d)
@ -386,13 +386,31 @@ def set_text_on_curve(text_properties):
ob = bpy.data.objects.new(f"{glyph_id}", glyph.data)
ob.constraints.new(type='FOLLOW_PATH')
ob.constraints["Follow Path"].target = mom
ob.constraints["Follow Path"].use_fixed_location = True
ob.constraints["Follow Path"].offset_factor = advance / curve_length
ob.constraints["Follow Path"].use_curve_follow = True
ob.constraints["Follow Path"].forward_axis = "FORWARD_X"
ob.constraints["Follow Path"].up_axis = "UP_Y"
distribution_type = 'CALCULATE'
if distribution_type == 'FOLLOW_PATH':
ob.constraints.new(type='FOLLOW_PATH')
ob.constraints["Follow Path"].target = mom
ob.constraints["Follow Path"].use_fixed_location = True
ob.constraints["Follow Path"].offset_factor = advance / curve_length
ob.constraints["Follow Path"].use_curve_follow = True
ob.constraints["Follow Path"].forward_axis = "FORWARD_X"
ob.constraints["Follow Path"].up_axis = "UP_Y"
elif distribution_type == 'CALCULATE':
location, tangent = calc_point_on_bezier_curve(mom, advance, True)
ob.location = mom.matrix_world @ location
mask = [0]
input_rotations = [mathutils.Vector((radians(90.0), 0.0, 0.0))]
vectors = [tangent]
factors = [1.0]
local_main_axis = mathutils.Vector((1.0, 0.0, 0.0))
motor = align_rotations_auto_pivot(mask,
input_rotations,
vectors,
factors,
local_main_axis)
if ob.rotation_mode != 'QUATERNION':
ob.rotation_mode = 'QUATERNION'
ob.rotation_quaternion = (mom.matrix_world @ motor[0]).to_quaternion()
scalor = 0.001