[Bf-extensions-cvs] SVN commit: /data/svn/bf-extensions [2097] trunk/py/scripts/addons/modules/ curve_utils.py: remove some 2d spesific functions, minor refactor
Campbell Barton
ideasman42 at gmail.com
Wed Jul 6 08:46:37 CEST 2011
Revision: 2097
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-extensions&revision=2097
Author: campbellbarton
Date: 2011-07-06 06:46:37 +0000 (Wed, 06 Jul 2011)
Log Message:
-----------
remove some 2d spesific functions, minor refactor
Modified Paths:
--------------
trunk/py/scripts/addons/modules/curve_utils.py
Modified: trunk/py/scripts/addons/modules/curve_utils.py
===================================================================
--- trunk/py/scripts/addons/modules/curve_utils.py 2011-07-06 05:13:53 UTC (rev 2096)
+++ trunk/py/scripts/addons/modules/curve_utils.py 2011-07-06 06:46:37 UTC (rev 2097)
@@ -25,11 +25,6 @@
((l2[0] - pt[0]) * (l1[1] - pt[1])))
-def shell_angle_to_dist(angle):
- from math import cos
- return 1.0 if (angle < 0.0001) else abs(1.0 / cos(angle))
-
-
def vis_curve_object():
scene = bpy.data.scenes[0] # weak!
cu = bpy.data.curves.new(name="Line", type='CURVE')
@@ -74,7 +69,6 @@
if p3:
spline = ob.data.splines.new(type='POLY')
spline.points[0].co.xyz = p3.to_3d()
- print(rad)
if rad is not None:
vis_circle_object(p3, rad)
@@ -137,7 +131,7 @@
def points_to_bezier(points_orig,
double_limit=0.0001,
kink_tolerance=0.25,
- bezier_tolerance=0.1, # error distance, scale dependant
+ bezier_tolerance=0.02, # error distance, scale dependant
subdiv=8,
angle_span=0.95, # 1.0 tries to evaluate splines of 180d
):
@@ -165,15 +159,7 @@
va = self.co - self.prev.co
vb = self.next.co - self.co
self.angle = va.angle(vb, 0.0)
-
- # XXX 2D
- if line_point_side_v2(self.prev.co,
- self.co,
- self.next.co,
- ) < 0.0:
- self.angle = -self.angle
-
def angle_diff(self):
""" use for detecting joints, detect difference in angle from
surrounding points.
@@ -186,21 +172,7 @@
return abs(self.angle - self.prev.angle) / math.pi
else:
return 0.0
-
- def angle_filter(self):
- tot = 1
- a = self.angle
- if self.prev:
- tot += 1
- a += self.prev.angle
- if self.next:
- tot += 1
- a += self.next.angle
-
- a = a / tot
- return 0.0 if abs(a) < 0.01 else a
-
def calc_normal(self):
v1 = v2 = None
if self.prev and not self.prev.is_joint:
@@ -284,8 +256,8 @@
self.calc_angle()
self.calc_normal()
- def total_angle(self):
- return abs(sum((p.angle for p in self.points)))
+ #~ def total_angle(self):
+ #~ return abs(sum((p.angle for p in self.points)))
def redistribute(self, segment_length, smooth=False):
if len(self.points) == 1:
@@ -560,8 +532,6 @@
fac_1 = intersect_point_line(p2_apex_co, p1.co, p1.co + l1_tan)[1] * fac_fac
fac_2 = intersect_point_line(p1_apex_co, p2.co, p2.co + l2_tan)[1] * fac_fac
- # TODO, scale the factors some useful way
-
h1_fac = ((p1.co - p1_apex_co).length / 0.75) - fac_1
h2_fac = ((p2.co - p2_apex_co).length / 0.75) - fac_2
@@ -579,14 +549,14 @@
'''
- def bezier_error(self):
+ def bezier_error(self, error_max=-1.0, test_count=8):
from mathutils.geometry import interpolate_bezier
test_points = interpolate_bezier(self.points[0].co.to_3d(),
self.handle_left,
self.handle_right,
self.points[-1].co.to_3d(),
- 8,
+ test_count,
)
from mathutils.geometry import intersect_point_line
@@ -616,9 +586,15 @@
length_best = length
co_best = p_ix
- error += length_best
+ error += length_best / test_count
+
+ if error_max != -1.0 and error > error_max:
+ return True
- return error
+ if error_max != -1.0:
+ return False
+ else:
+ return error
class Curve(object):
__slots__ = ("splines",
@@ -704,10 +680,8 @@
s_prev = None
iii = 0
for s in self.splines:
- print(iii)
assert(s.prev == s_prev)
if s_prev:
- print()
assert(s_prev.next == s)
s_prev = s
iii += 1
@@ -795,11 +769,7 @@
base.select = True
return cu
-
-
-
-
points = list(points_orig)
# remove doubles
@@ -823,39 +793,13 @@
# return
# curve.validate()
+ # higher quality but not really needed
+ '''
curve.redistribute(segment_length / 4.0, smooth=True)
curve.redistribute(segment_length, smooth=False)
+ '''
+ curve.redistribute(segment_length, smooth=True)
- def swap_side(p):
- angle = p.angle_filter()
- if p.prev.prev is None:
- swap_side.last = angle
- else:
- if (swap_side.last > 0.0) != (angle > 0.0):
- if abs(p.angle) > 0.025:
- swap_side.last = p.angle
- return True
-
- return False
-
-
- #curve.split_func_map_point(lambda p: (p.angle_filter() >= 0) != \
- # (p.prev.angle_filter() >= 0))
- # curve.split_func_map_point(swap_side)
-
-
- # now split based on total spline angle.
- import math
- angle_span_rad = angle_span * math.pi
- curve.split_func_spline(lambda s:
- len(s.points) // 2
- if (s.total_angle() > angle_span_rad and
- len(s.points) > 2)
- else -1,
- recursive=True,
- )
-
-
# debug only!
# to test how good the bezier spline fitting is without corrections
@@ -866,8 +810,9 @@
# or recursively subdivide...
curve.split_func_spline(lambda s:
len(s.points) // 2
- if ((s.bezier_solve(), s.bezier_error())[1] >
- bezier_tolerance) and (len(s.points))
+ if ((s.bezier_solve(),
+ s.bezier_error(bezier_tolerance))[1]
+ and (len(s.points)))
else -1,
recursive=True,
)
@@ -883,7 +828,6 @@
if __name__ == "__main__":
- print("A")
bpy.ops.wm.open_mainfile(filepath="/root/curve_test1.blend")
ob = bpy.data.objects["Curve"]
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