-
Notifications
You must be signed in to change notification settings - Fork 33
/
shape.py
195 lines (160 loc) · 6.07 KB
/
shape.py
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2011 Michael Pitidis, Hussein Abdulwahid.
#
# This file is part of Labelme.
#
# Labelme 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 3 of the License, or
# (at your option) any later version.
#
# Labelme 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 Labelme. If not, see <http://www.gnu.org/licenses/>.
#
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from lib import distance
# TODO:
# - [opt] Store paths instead of creating new ones at each paint.
DEFAULT_LINE_COLOR = QColor(0, 255, 0, 128)
DEFAULT_FILL_COLOR = QColor(255, 0, 0, 128)
DEFAULT_SELECT_LINE_COLOR = QColor(255, 255, 255)
DEFAULT_SELECT_FILL_COLOR = QColor(0, 128, 255, 155)
DEFAULT_VERTEX_FILL_COLOR = QColor(0, 255, 0, 255)
DEFAULT_HVERTEX_FILL_COLOR = QColor(255, 0, 0)
class Shape(object):
P_SQUARE, P_ROUND = range(2)
MOVE_VERTEX, NEAR_VERTEX = range(2)
## The following class variables influence the drawing
## of _all_ shape objects.
line_color = DEFAULT_LINE_COLOR
fill_color = DEFAULT_FILL_COLOR
select_line_color = DEFAULT_SELECT_LINE_COLOR
select_fill_color = DEFAULT_SELECT_FILL_COLOR
vertex_fill_color = DEFAULT_VERTEX_FILL_COLOR
hvertex_fill_color = DEFAULT_HVERTEX_FILL_COLOR
point_type = P_ROUND
point_size = 8
scale = 1.0
def __init__(self, label=None, line_color=None):
self.label = label
self.points = []
self.fill = False
self.selected = False
self._highlightIndex = None
self._highlightMode = self.NEAR_VERTEX
self._highlightSettings = {
self.NEAR_VERTEX: (4, self.P_ROUND),
self.MOVE_VERTEX: (1.5, self.P_SQUARE),
}
self._closed = False
if line_color is not None:
# Override the class line_color attribute
# with an object attribute. Currently this
# is used for drawing the pending line a different color.
self.line_color = line_color
def close(self):
assert len(self.points) > 2
self._closed = True
def addPoint(self, point):
if self.points and point == self.points[0]:
self.close()
else:
self.points.append(point)
def popPoint(self):
if self.points:
return self.points.pop()
return None
def isClosed(self):
return self._closed
def setOpen(self):
self._closed = False
def paint(self, painter):
if self.points:
color = self.select_line_color if self.selected else self.line_color
pen = QPen(color)
# Try using integer sizes for smoother drawing(?)
pen.setWidth(max(1, int(round(2.0 / self.scale))))
painter.setPen(pen)
line_path = QPainterPath()
vrtx_path = QPainterPath()
line_path.moveTo(self.points[0])
# Uncommenting the following line will draw 2 paths
# for the 1st vertex, and make it non-filled, which
# may be desirable.
#self.drawVertex(vrtx_path, 0)
for i, p in enumerate(self.points):
line_path.lineTo(p)
self.drawVertex(vrtx_path, i)
if self.isClosed():
line_path.lineTo(self.points[0])
painter.drawPath(line_path)
painter.drawPath(vrtx_path)
painter.fillPath(vrtx_path, self.vertex_fill_color)
if self.fill:
color = self.select_fill_color if self.selected else self.fill_color
painter.fillPath(line_path, color)
def drawVertex(self, path, i):
d = self.point_size / self.scale
shape = self.point_type
point = self.points[i]
if i == self._highlightIndex:
size, shape = self._highlightSettings[self._highlightMode]
d *= size
if self._highlightIndex is not None:
self.vertex_fill_color = self.hvertex_fill_color
else:
self.vertex_fill_color = Shape.vertex_fill_color
if shape == self.P_SQUARE:
path.addRect(point.x() - d/2, point.y() - d/2, d, d)
elif shape == self.P_ROUND:
path.addEllipse(point, d/2.0, d/2.0)
else:
assert False, "unsupported vertex shape"
def nearestVertex(self, point, epsilon):
for i, p in enumerate(self.points):
if distance(p - point) <= epsilon:
return i
return None
def containsPoint(self, point):
return self.makePath().contains(point)
def makePath(self):
path = QPainterPath(self.points[0])
for p in self.points[1:]:
path.lineTo(p)
return path
def boundingRect(self):
return self.makePath().boundingRect()
def moveBy(self, offset):
self.points = [p + offset for p in self.points]
def moveVertexBy(self, i, offset):
self.points[i] = self.points[i] + offset
def highlightVertex(self, i, action):
self._highlightIndex = i
self._highlightMode = action
def highlightClear(self):
self._highlightIndex = None
def copy(self):
shape = Shape("Copy of %s" % self.label )
shape.points= [p for p in self.points]
shape.fill = self.fill
shape.selected = self.selected
shape._closed = self._closed
if self.line_color != Shape.line_color:
shape.line_color = self.line_color
if self.fill_color != Shape.fill_color:
shape.fill_color = self.fill_color
return shape
def __len__(self):
return len(self.points)
def __getitem__(self, key):
return self.points[key]
def __setitem__(self, key, value):
self.points[key] = value