1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110 - 1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
#
# LOAD MODUL #
import bpy
from bpy import *
from bpy.props import *
import bgl
import blf
import gpu
from gpu_extras.batch import batch_for_shader
import math
import mathutils
from mathutils import Vector
from mathutils.geometry import interpolate_bezier
def get_points(spline, matrix_world):
bezier_points = spline.bezier_points
if len(bezier_points) < 2:
return []
r = spline.resolution_u + 1
if r < 2:
return []
segments = len(bezier_points)
if not spline.use_cyclic_u:
segments -= 1
point_list = []
for i in range(segments):
inext = (i + 1) % len(bezier_points)
bezier_points1 = matrix_world @ bezier_points[i].co
handle1 = matrix_world @ bezier_points[i].handle_right
handle2 = matrix_world @ bezier_points[inext].handle_left
bezier_points2 = matrix_world @ bezier_points[inext].co
bezier = bezier_points1, handle1, handle2, bezier_points2, r
points = interpolate_bezier(*bezier)
point_list.extend(points)
return point_list
def draw(self, context, splines, curve_vertcolor, matrix_world):
for spline in splines:
points = get_points(spline, matrix_world)
shader = gpu.shader.from_builtin('3D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'POINTS', {"pos": points})
shader.bind()
shader.uniform_float("color", curve_vertcolor)
batch.draw(shader)
class ShowCurveResolution(bpy.types.Operator):
bl_idname = "curvetools.show_resolution"
bl_label = "Show Curve Resolution"
bl_description = "Show curve Resolution / [ESC] - remove"
handlers = []
def modal(self, context, event):
context.area.tag_redraw()
if event.type in {'ESC'}:
for handler in self.handlers:
try:
bpy.types.SpaceView3D.draw_handler_remove(handler, 'WINDOW')
except:
pass
for handler in self.handlers:
self.handlers.remove(handler)
return {'CANCELLED'}
return {'PASS_THROUGH'}
def invoke(self, context, event):
if context.area.type == 'VIEW_3D':
# color change in the panel
curve_vertcolor = bpy.context.scene.curvetools.curve_vertcolor
splines = context.active_object.data.splines
matrix_world = context.active_object.matrix_world
# the arguments we pass the the callback
args = (self, context, splines, curve_vertcolor, matrix_world)
# Add the region OpenGL drawing callback
# draw in view space with 'POST_VIEW' and 'PRE_VIEW'
self.handlers.append(bpy.types.SpaceView3D.draw_handler_add(draw, args, 'WINDOW', 'POST_VIEW'))
context.window_manager.modal_handler_add(self)
return {'RUNNING_MODAL'}
else:
self.report({'WARNING'},
"View3D not found, cannot run operator")
return {'CANCELLED'}
@classmethod
def poll(cls, context):
return (context.object is not None and
context.object.type == 'CURVE')
def register():
for cls in classes:
bpy.utils.register_class(operators)
def unregister():
for cls in classes:
bpy.utils.unregister_class(operators)
if __name__ == "__main__":
register()
operators = [
ShowCurveResolution,
]
|
