forked from bartvdbraak/blender
Added a euler filter script, to filter out discontineouities in euler curves (e.g. where curves randomly have -/+ multiples of 360 offsets in sections). To use, select a curve in the fcurve editor and do Channel->Discontinuity (Euler) Filter. Note, will only work on euler rotation curves, won't do anything on anything else.
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release/scripts/op/euler_filter.py
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64
release/scripts/op/euler_filter.py
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@ -0,0 +1,64 @@
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from math import *
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import bpy
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from Mathutils import *
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def main(context):
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def cleanupEulCurve(fcv):
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keys = []
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for k in fcv.keyframe_points:
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keys.append([k.handle1.copy(), k.co.copy(), k.handle2.copy()])
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print(keys)
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for i in range(len(keys)):
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cur = keys[i]
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prev = keys[i-1] if i > 0 else None
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next = keys[i+1] if i < len(keys)-1 else None
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if prev == None:
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continue
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th = pi
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if abs(prev[1][1] - cur[1][1]) >= th: # more than 180 degree jump
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fac = pi*2
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if prev[1][1] > cur[1][1]:
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while abs(cur[1][1]-prev[1][1]) >= th: # < prev[1][1]:
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cur[0][1] += fac
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cur[1][1] += fac
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cur[2][1] += fac
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elif prev[1][1] < cur[1][1]:
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while abs(cur[1][1]-prev[1][1]) >= th:
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cur[0][1] -= fac
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cur[1][1] -= fac
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cur[2][1] -= fac
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for i in range(len(keys)):
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for x in range(2):
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fcv.keyframe_points[i].handle1[x] = keys[i][0][x]
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fcv.keyframe_points[i].co[x] = keys[i][1][x]
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fcv.keyframe_points[i].handle2[x] = keys[i][2][x]
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flist = bpy.context.active_object.animation_data.action.fcurves
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for f in flist:
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if f.selected and f.data_path.endswith("rotation_euler"):
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cleanupEulCurve(f)
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class DiscontFilterOp(bpy.types.Operator):
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"""
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Fixes the most common causes of gimbal lock in the fcurves of
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the active bone.
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"""
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bl_idname = "graph.discont_filter"
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bl_label = "Filter out discontinuities in the active fcurves"
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def poll(self, context):
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return context.active_object != None
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def execute(self, context):
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main(context)
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return {'FINISHED'}
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bpy.types.register(DiscontFilterOp)
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if __name__ == "__main__":
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bpy.ops.graph.discont_filter()
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@ -147,6 +147,9 @@ class GRAPH_MT_channel(bpy.types.Menu):
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layout.operator("anim.channels_expand")
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layout.operator("anim.channels_collapse")
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layout.separator()
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layout.operator("graph.discont_filter", text="Discontinuity (Euler) Filter")
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class GRAPH_MT_key(bpy.types.Menu):
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bl_label = "Key"
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@ -182,7 +185,6 @@ class GRAPH_MT_key(bpy.types.Menu):
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layout.operator("graph.copy")
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layout.operator("graph.paste")
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class GRAPH_MT_key_transform(bpy.types.Menu):
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bl_label = "Transform"
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