[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [39005] branches/soc-2011-pepper/release/ scripts: Initial coding of path editing operator.
Benjy Cook
benjycook at hotmail.com
Thu Aug 4 00:26:59 CEST 2011
Revision: 39005
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=39005
Author: benjycook
Date: 2011-08-03 22:26:59 +0000 (Wed, 03 Aug 2011)
Log Message:
-----------
Initial coding of path editing operator. Still needs some work, but all the basic functionality is there. Select a path and the stride bone (as active) and it will reparameterize the path to propel the armature forward in the same magnitude of the original
Modified Paths:
--------------
branches/soc-2011-pepper/release/scripts/modules/mocap_tools.py
branches/soc-2011-pepper/release/scripts/startup/ui_mocap.py
Modified: branches/soc-2011-pepper/release/scripts/modules/mocap_tools.py
===================================================================
--- branches/soc-2011-pepper/release/scripts/modules/mocap_tools.py 2011-08-03 19:12:18 UTC (rev 39004)
+++ branches/soc-2011-pepper/release/scripts/modules/mocap_tools.py 2011-08-03 22:26:59 UTC (rev 39005)
@@ -81,6 +81,9 @@
def y(self):
return self.vec[1]
+ def resize_2d(self):
+ return Vector((self.x, self.y))
+
length = property(vecLength)
lengthSq = property(vecLengthSq)
x = property(x)
@@ -322,7 +325,10 @@
return 0, None
for pt in data_pts[s:e + 1]:
bezVal = bezierEval(bez, pt.u)
- tmpError = (pt.co - bezVal).length / pt.co.length
+ normalize_error = pt.co.length
+ if normalize_error == 0:
+ normalize_error = 1
+ tmpError = (pt.co - bezVal).length / normalize_error
if tmpError >= maxError:
maxError = tmpError
maxErrorPt = pt.index
@@ -471,10 +477,8 @@
#(e.g. a bone's x,y,z rotation)
-def fcurves_simplify(sel_opt="all", error=0.002, group_mode=True):
+def fcurves_simplify(context, obj, sel_opt="all", error=0.002, group_mode=True):
# main vars
- context = bpy.context
- obj = context.active_object
fcurves = obj.animation_data.action.fcurves
if sel_opt == "sel":
@@ -706,3 +710,52 @@
existingConstraint = [constraint for constraint in bone.constraints if constraint.name == "DOF Limitation"]
if existingConstraint:
bone.constraints.remove(existingConstraint[0])
+
+
+def path_editing(context, stride_obj, path):
+ y_fcurve = [fcurve for fcurve in stride_obj.animation_data.action.fcurves if fcurve.data_path == "location"][1]
+ s, e = context.scene.frame_start, context.scene.frame_end # y_fcurve.range()
+ s = int(s)
+ e = int(e)
+ y_s = y_fcurve.evaluate(s)
+ y_e = y_fcurve.evaluate(e)
+ direction = (y_e - y_s) / abs(y_e - y_s)
+ existing_cons = [constraint for constraint in stride_obj.constraints if constraint.type == "FOLLOW_PATH"]
+ for cons in existing_cons:
+ stride_obj.constraints.remove(cons)
+ path_cons = stride_obj.constraints.new("FOLLOW_PATH")
+ if direction < 0:
+ path_cons.forward_axis = "TRACK_NEGATIVE_Y"
+ else:
+ path_cons.forward_axis = "FORWARD_Y"
+ path_cons.target = path
+ path_cons.use_curve_follow = True
+ path.data.path_duration = e - s
+ try:
+ path.data.animation_data.action.fcurves
+ except AttributeError:
+ path.data.keyframe_insert("eval_time", frame=0)
+ eval_time_fcurve = [fcurve for fcurve in path.data.animation_data.action.fcurves if fcurve.data_path == "eval_time"]
+ eval_time_fcurve = eval_time_fcurve[0]
+ totalLength = 0
+ parameterization = {}
+ print("evaluating curve")
+ for t in range(s, e - 1):
+ if s == t:
+ chordLength = 0
+ else:
+ chordLength = (y_fcurve.evaluate(t) - y_fcurve.evaluate(t + 1))
+ totalLength += chordLength
+ parameterization[t] = totalLength
+ for t in range(s + 1, e - 1):
+ if totalLength == 0:
+ print("no forward motion")
+ parameterization[t] /= totalLength
+ parameterization[t] *= e - s
+ parameterization[e] = e - s
+ for t in parameterization.keys():
+ eval_time_fcurve.keyframe_points.insert(frame=t, value=parameterization[t])
+ error = 0.01
+ reparaError = error * 32
+ maxIterations = 16
+ print("finished path editing")
Modified: branches/soc-2011-pepper/release/scripts/startup/ui_mocap.py
===================================================================
--- branches/soc-2011-pepper/release/scripts/startup/ui_mocap.py 2011-08-03 19:12:18 UTC (rev 39004)
+++ branches/soc-2011-pepper/release/scripts/startup/ui_mocap.py 2011-08-03 22:26:59 UTC (rev 39005)
@@ -304,6 +304,18 @@
layout.separator()
+class ExtraToolsPanel(bpy.types.Panel):
+ # Motion capture retargeting panel
+ bl_label = "Extra Mocap Tools"
+ bl_space_type = "PROPERTIES"
+ bl_region_type = "WINDOW"
+ bl_context = "object"
+
+ def draw(self, context):
+ layout = self.layout
+ layout.operator('mocap.pathediting', text="Follow Path")
+
+
class OBJECT_OT_RetargetButton(bpy.types.Operator):
'''Retarget animation from selected armature to active armature '''
bl_idname = "mocap.retarget"
@@ -383,7 +395,7 @@
bl_label = "Converts samples / simplifies keyframes to beziers"
def execute(self, context):
- mocap_tools.fcurves_simplify()
+ mocap_tools.fcurves_simplify(context, context.active_object)
return {"FINISHED"}
@classmethod
@@ -598,6 +610,25 @@
return False
+class OBJECT_OT_PathEditing(bpy.types.Operator):
+ '''Sets active object (stride object) to follow the selected curve'''
+ bl_idname = "mocap.pathediting"
+ bl_label = "Sets active object (stride object) to follow the selected curve"
+
+ def execute(self, context):
+ path = [obj for obj in context.selected_objects if obj != context.active_object][0]
+ mocap_tools.path_editing(context, context.active_object, path)
+ return {"FINISHED"}
+
+ @classmethod
+ def poll(cls, context):
+ if context.active_object:
+ selected_objs = [obj for obj in context.selected_objects if obj != context.active_object]
+ return selected_objs
+ else:
+ return False
+
+
def register():
bpy.utils.register_module(__name__)
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