def find_axis(top_line, bot_line):
type, origin = top_line.intersect(bot_line)
# Force angles into right half-plane regardless of click order
top_angle = (top_line.angle() + 90) % 180 - 90
bot_angle = (bot_line.angle() + 90) % 180 - 90
xaxis = QLineF(origin, QPointF(0, 0)) # Need to make non-zero vector
xaxis.setLength(100)
xaxis.setAngle((top_angle + bot_angle) / 2)
yaxis = QLineF(xaxis)
yaxis.setAngle(xaxis.angle() + 90)
return origin, xaxis, yaxis
def find_axis(top_line, bot_line):
type, origin = top_line.intersect(bot_line)
# Force angles into right half-plane regardless of click order
top_angle = (top_line.angle() + 90)%180 - 90
bot_angle = (bot_line.angle() + 90)%180 - 90
xaxis = QLineF(origin, QPointF(0, 0)) # Need to make non-zero vector
xaxis.setLength(100)
xaxis.setAngle((top_angle + bot_angle)/2)
yaxis = QLineF(xaxis)
yaxis.setAngle(xaxis.angle() + 90)
return origin, xaxis, yaxis
def __init__(self, x, y, scaleFactor, text, obj, v, parent):
"""
Default class constructor.
:param `x`: TOWRITE
:type `x`: qreal
:param `y`: TOWRITE
:type `y`: qreal
:param `scaleFactor`: TOWRITE
:type `scaleFactor`: qreal
:param `text`: TOWRITE
:type `text`: QString
:param `obj`: TOWRITE
:type `obj`: `BaseObject`
:param `v`: TOWRITE
:type `v`: `View`
:param `parent`: TOWRITE
:type `parent`: `QUndoCommand`_
"""
super(UndoableScaleCommand, self).__init__(parent)
self.gview = v
self.object = obj
self.setText(text)
# Prevent division by zero and other wacky behavior
if scaleFactor <= 0.0:
self.dx = 0.0
self.dy = 0.0
self.factor = 1.0
QMessageBox.critical(
0, QObject.tr("ScaleFactor Error"),
QObject.
tr("Hi there. If you are not a developer, report this as a bug. "
"If you are a developer, your code needs examined, and possibly your head too."
))
else:
# Calculate the offset
oldX = self.object.x() # qreal
oldY = self.object.y() # qreal
scaleLine = QLineF(x, y, oldX, oldY)
scaleLine.setLength(scaleLine.length() * scaleFactor)
newX = scaleLine.x2() # qreal
newY = scaleLine.y2() # qreal
self.dx = newX - oldX
self.dy = newY - oldY
self.factor = scaleFactor
def __init__(self, x, y, scaleFactor, text, obj, v, parent=None):
"""
Default class constructor.
:param `x`: TOWRITE
:type `x`: qreal
:param `y`: TOWRITE
:type `y`: qreal
:param `scaleFactor`: TOWRITE
:type `scaleFactor`: qreal
:param `text`: TOWRITE
:type `text`: QString
:param `obj`: TOWRITE
:type `obj`: `BaseObject`
:param `v`: TOWRITE
:type `v`: `View`
:param `parent`: TOWRITE
:type `parent`: `QUndoCommand`_
"""
super(UndoableScaleCommand, self).__init__(parent)
self.gview = v
self.object = obj
self.setText(text)
# Prevent division by zero and other wacky behavior
if scaleFactor <= 0.0:
self.dx = 0.0
self.dy = 0.0
self.factor = 1.0
QMessageBox.critical(0, QObject.tr("ScaleFactor Error"),
QObject.tr("Hi there. If you are not a developer, report this as a bug. "
"If you are a developer, your code needs examined, and possibly your head too."))
else:
# Calculate the offset
oldX = self.object.x() # qreal
oldY = self.object.y() # qreal
scaleLine = QLineF(x, y, oldX, oldY)
scaleLine.setLength(scaleLine.length() * scaleFactor)
newX = scaleLine.x2() # qreal
newY = scaleLine.y2() # qreal
self.dx = newX - oldX
self.dy = newY - oldY
self.factor = scaleFactor
def setObjectRadius(self, radius):
"""
TOWRITE
:param `radius`: TOWRITE
:type `radius`: qreal
"""
# qreal rad;
if radius <= 0:
rad = 0.0000001
else:
rad = radius
center = self.scenePos() # QPointF
startLine = QLineF(center, self.objectStartPoint()) # QLineF
midLine = QLineF(center, self.objectMidPoint()) # QLineF
endLine = QLineF(center, self.objectEndPoint()) # QLineF
startLine.setLength(rad)
midLine.setLength(rad)
endLine.setLength(rad)
arcStartPoint = startLine.p2()
arcMidPoint = midLine.p2()
arcEndPoint = endLine.p2()
self.calculateArcData(arcStartPoint.x(), arcStartPoint.y(), arcMidPoint.x(), arcMidPoint.y(), arcEndPoint.x(), arcEndPoint.y())
def renewplot(self):
""" Do not layout anything, but redraw all lines"""
scene = self.graphicsView.scene()
self.roots = set()
# scene.changed.disconnect(self.renewplot)
for i in self.qLines:
scene.removeItem(i)
self.qLines = []
for edge in self.gv.edges_iter():
qnode1 = self.nodesToQNodes[edge[0]]
qnode2 = self.nodesToQNodes[edge[1]]
line = QLineF(qnode1.pos(), qnode2.pos())
line.setLength(line.length() - 40)
end = line.p2()
arrowLine1 = QLineF()
arrowLine1.setP1(end)
arrowLine1.setLength(10)
arrowLine1.setAngle(line.angle() + 210)
arrowLine2 = QLineF()
arrowLine2.setP1(end)
arrowLine2.setLength(10)
arrowLine2.setAngle(line.angle() - 210)
if edge.attr['color'] not in self.qpens:
self.qpens[edge.attr['color']] = QPen(
QColor(edge.attr['color']))
item = scene.addLine(line, self.qpens[edge.attr['color']])
item.setZValue(-1)
item.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.qLines.append(item)
item = scene.addLine(arrowLine1, self.qpens[edge.attr['color']])
self.qLines.append(item)
item = scene.addLine(arrowLine2, self.qpens[edge.attr['color']])
self.qLines.append(item)
self.roots.add(edge[0])