# Copyright (c) <2015-Present> Tzutalin
# Copyright (C) 2013 MIT, Computer Science and Artificial Intelligence Laboratory. Bryan Russell, Antonio Torralba,
# William T. Freeman. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
# associated documentation files (the "Software"), to deal in the Software without restriction, including without
# limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all copies or substantial portions of
# the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
# NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# !/usr/bin/python
# -*- coding: utf-8 -*-
import math
import sys
from PyQt5.QtCore import QPointF
from PyQt5.QtGui import QColor, QPen, QPainterPath, QFont
from libs.utils import distance
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)
DEFAULT_LOCK_COLOR = QColor(255, 0, 255)
MIN_Y_LABEL = 10
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, difficult=False, key_cls="None", paintLabel=False, paintIdx=False):
self.label = label
self.idx = None # bbox order, only for table annotation
self.points = []
self.fill = False
self.selected = False
self.difficult = difficult
self.key_cls = key_cls
self.paintLabel = paintLabel
self.paintIdx = paintIdx
self.locked = False
self.direction = 0
self.center = None
self.epsilon = 5 # same as canvas
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.fontsize = 8
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 rotate(self, theta):
for i, p in enumerate(self.points):
self.points[i] = self.rotatePoint(p, theta)
self.direction -= theta
self.direction = self.direction % (2 * math.pi)
def rotatePoint(self, p, theta):
order = p - self.center
cosTheta = math.cos(theta)
sinTheta = math.sin(theta)
pResx = cosTheta * order.x() + sinTheta * order.y()
pResy = - sinTheta * order.x() + cosTheta * order.y()
pRes = QPointF(self.center.x() + pResx, self.center.y() + pResy)
return pRes
def close(self):
self.center = QPointF((self.points[0].x() + self.points[2].x()) / 2,
(self.points[0].y() + self.points[2].y()) / 2)
self._closed = True
def reachMaxPoints(self):
if len(self.points) >= 4:
return True
return False
def addPoint(self, point):
if self.reachMaxPoints() and self.closeEnough(self.points[0], point):
self.close()
else:
self.points.append(point)
def closeEnough(self, p1, p2):
return distance(p1 - p2) < self.epsilon
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)
# Draw text at the top-left
if self.paintLabel:
min_x = sys.maxsize
min_y = sys.maxsize
for point in self.points:
min_x = min(min_x, point.x())
min_y = min(min_y, point.y())
if min_x != sys.maxsize and min_y != sys.maxsize:
font = QFont()
font.setPointSize(self.fontsize)
font.setBold(True)
painter.setFont(font)
if self.label is None:
self.label = ""
if min_y < MIN_Y_LABEL:
min_y += MIN_Y_LABEL
painter.drawText(min_x, min_y, self.label)
# Draw number at the top-right
if self.paintIdx:
min_x = sys.maxsize
min_y = sys.maxsize
for point in self.points:
min_x = min(min_x, point.x())
min_y = min(min_y, point.y())
if min_x != sys.maxsize and min_y != sys.maxsize:
font = QFont()
font.setPointSize(self.fontsize)
font.setBold(True)
painter.setFont(font)
text = ''
if self.idx != None:
text = str(self.idx)
if min_y < MIN_Y_LABEL:
min_y += MIN_Y_LABEL
painter.drawText(min_x, min_y, text)
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("%s" % self.label)
shape.points = [p for p in self.points]
shape.center = self.center
shape.direction = self.direction
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
shape.difficult = self.difficult
shape.key_cls = self.key_cls
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