FCurveHandleCopy/__init__.py
2021-07-09 21:57:31 -04:00

159 lines
4.9 KiB
Python

# Copyright (C) 2021 MMaker <mmaker@mmaker.moe>
#
# This file is part of FCurveHandleCopy.
#
# FCurveHandleCopy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# FCurveHandleCopy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with FCurveHandleCopy. If not, see <http://www.gnu.org/licenses/>.
bl_info = {
"name" : "FCurveHandleCopy",
"author" : "MMaker",
"description" : ":)",
"blender" : (2, 83, 0),
"version" : (0, 0, 1),
"category" : "Animation"
}
import bpy
import mathutils
import bl_math
class G:
selected_keys = []
bezier = []
def inverse_lerp(minimum, maximum, val):
return (val - minimum) / (maximum - minimum)
def convert_handles_to_bezier(keyframes):
handles = [keyframes[0].handle_right, keyframes[1].handle_left]
bezier = list(map(
lambda x: list(map(
lambda v, dimension: inverse_lerp(keyframes[0].co[dimension], keyframes[1].co[dimension], v),
x,
range(2)
)),
handles
))
return bezier
def generate_new_handles(in_key, out_key):
handles = list(map(
lambda fac: list(map(
lambda dimension: bl_math.lerp(in_key.co[dimension], out_key.co[dimension], fac[dimension]),
range(2)
)),
G.bezier
))
return [
mathutils.Vector(
(handles[0][0], handles[0][1])
),
mathutils.Vector(
(handles[1][0], handles[1][1])
)
]
class FCurveHandleCopyValue(bpy.types.Operator):
"""Copy FCurve handle values"""
bl_idname = "anim.mmaker_fcurve_handle_copy_values"
bl_label = "Copy"
def execute(self, context):
if (context.selected_visible_fcurves):
fcurves = context.selected_visible_fcurves
G.selected_keys = []
if (len(fcurves) > 1):
self.report({"WARNING"}, "Please only select one curve when copying an ease.")
return {'CANCELLED'}
G.selected_keys = list(filter(lambda x: x.select_control_point, fcurves[0].keyframe_points))
if (len(G.selected_keys) != 2):
self.report({"WARNING"}, "Please select exactly two keyframes when copying an ease.")
return {'CANCELLED'}
G.bezier = convert_handles_to_bezier(G.selected_keys)
return {'FINISHED'}
class FCurveHandlePasteValue(bpy.types.Operator):
"""Paste FCurve handle values"""
bl_idname = "anim.mmaker_fcurve_handle_paste_values"
bl_label = "Paste"
def execute(self, context):
if (context.selected_visible_fcurves):
fcurves = context.selected_visible_fcurves
for fcurve in fcurves:
keys = fcurve.keyframe_points
selected_keys = []
for i in range(0, len(keys)):
if (keys[i].select_control_point):
selected_keys.append(i)
if (len(selected_keys) == 0):
self.report({"WARNING"}, "Please select some keyframes to paste an ease to.")
return {'CANCELLED'}
if (len(selected_keys) == 1):
# TODO: Implement logic for this soon
pass
else:
selected_keys.pop() # TODO: Related to above, implement soon
for i in selected_keys:
if (i < len(keys) - 1):
new_handles = generate_new_handles(keys[i], keys[i + 1])
keys[i].interpolation = 'BEZIER'
keys[i + 1].interpolation = 'BEZIER'
keys[i].handle_right_type = 'FREE'
keys[i + 1].handle_left_type = 'FREE'
keys[i].handle_right = new_handles[0]
keys[i + 1].handle_left = new_handles[1]
return {'FINISHED'}
def menu_func(self, context):
self.layout.operator(FCurveHandleCopyValue.bl_idname)
self.layout.operator(FCurveHandlePasteValue.bl_idname)
classes = [
FCurveHandleCopyValue,
FCurveHandlePasteValue
]
def register():
for cls in classes:
bpy.utils.register_class(cls)
bpy.types.GRAPH_HT_header.append(menu_func)
def unregister():
for cls in classes:
bpy.utils.unregister_class(cls)
bpy.types.GRAPH_HT_header.remove(menu_func)
if __name__ == "__main__":
try:
unregister()
except:
import sys
print("Error:", sys.exc_info()[0])
pass
register()