X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fanimation.py;h=b7576fb516d761e0806d29cc8c7279e7e2956c5e;hp=5ad937df196060b934bd1269718beb6833ac76d4;hb=4c142176bad0ad17128a8176bedac3952c069449;hpb=f2cab83d5704f3f4a91f551f402187637e5063d2

diff --git a/blender/io_mspgl/animation.py b/blender/io_mspgl/animation.py
index 5ad937df..b7576fb5 100644
--- a/blender/io_mspgl/animation.py
+++ b/blender/io_mspgl/animation.py
@@ -1,3 +1,4 @@
+import math
 import mathutils
 
 class Curve:
@@ -34,6 +35,7 @@ class Animation:
 		self._action = action
 		self.curves = [Curve(c) for c in action.fcurves]
 		self.fps = 1
+		self.looping = False
 
 		for c in self.curves:
 			for i in range(0, len(c.knots)-1, 3):
@@ -65,10 +67,35 @@ class Animation:
 				kf.curves.append((c, i))
 
 		self.keyframes.sort(key=lambda k: k.time)
+		self.start_time = self.keyframes[0].time
+
+		for c in self.curves:
+			for k in c.knots:
+				k[0] -= self.start_time
+
+		for k in self.keyframes:
+			k.time -= self.start_time
 
 	def __getattr__(self, attr):
 		return getattr(self._curve, attr)
 
+	def check_looping(self, threshold):
+		self.looping = True
+		for c in self.curves:
+			first_y = c.knots[0][1]
+			last_y = c.knots[-1][1]
+			d = abs(last_y-first_y)
+
+			if c.data_path=="rotation_euler":
+				while d>math.pi/2:
+					d -= math.pi
+				while d<-math.pi/2:
+					d += math.pi
+
+			if d>threshold:
+				self.looping = False
+				break
+
 	def change_fps(self, fps):
 		scale = self.fps/fps
 		self.fps = fps
@@ -81,8 +108,9 @@ class Animation:
 			k.time *= scale
 
 
-def create_animation_from_action(context, action):
+def create_animation_from_action(context, action, *, looping_threshold=0.001):
 	anim = Animation(action)
 	render = context.scene.render
+	anim.check_looping(looping_threshold)
 	anim.change_fps(render.fps/render.fps_base)
 	return anim