def getPoints(self, count, opposite=False):
result = []
line = QLineF(self.__polygon.boundingRect().topLeft(), self.__polygon.boundingRect().topRight())
if opposite:
line = QLineF(self.__polygon.boundingRect().bottomLeft(), self.__polygon.boundingRect().bottomRight())
step = 1.0 / (count + 1)
currentStep = step
for x in range(0, count):
result.append(line.pointAt(currentStep))
currentStep += step
return result
def paint(self, painter, option, widget=None):
color, _ = Edge.Color.SELECTED if self.selected else Edge.Color.DEFAULT
pen = self.pen()
pen.setColor(color)
pen.setBrush(QBrush(color))
pen.setWidth(np.clip(2 * self.weight(), .5, 4))
painter.setPen(pen)
self.setPen(pen)
if self.source == self.dest:
return self.paintArc(painter, option, widget)
if self.source.collidesWithItem(self.dest):
return
have_two_edges = len([
edge for edge in self.source.edges
if self.source in edge and self.dest in edge and edge is not self
])
source_pos = self.source.pos()
dest_pos = self.dest.pos()
color = self.pen().color()
painter.setBrush(color)
point = shape_line_intersection(self.dest.shape(), dest_pos,
QLineF(source_pos, dest_pos))
line = QLineF(source_pos, point)
if have_two_edges:
normal = line.normalVector()
normal.setLength(15)
line = QLineF(normal.p2(), point)
self.label.setPos(line.pointAt(.5))
self.squares.placeBelow(self.label)
self.setLine(line)
painter.drawLine(line)
# Draw arrow head
self.arrowHead.clear()
for point in self._arrowhead_points(line):
self.arrowHead.append(point)
painter.drawPolygon(self.arrowHead)
def paint(self, painter, option, widget=None):
color, _ = Edge.Color.SELECTED if self.selected else Edge.Color.DEFAULT
pen = self.pen()
pen.setColor(color)
pen.setBrush(QBrush(color))
pen.setWidth(np.clip(2 * self.weight(), .5, 4))
painter.setPen(pen)
self.setPen(pen)
if self.source == self.dest:
return self.paintArc(painter, option, widget)
if self.source.collidesWithItem(self.dest):
return
have_two_edges = len([edge for edge in self.source.edges
if self.source in edge and self.dest in edge and edge is not self])
source_pos = self.source.pos()
dest_pos = self.dest.pos()
color = self.pen().color()
painter.setBrush(color)
point = shape_line_intersection(self.dest.shape(), dest_pos,
QLineF(source_pos, dest_pos))
line = QLineF(source_pos, point)
if have_two_edges:
normal = line.normalVector()
normal.setLength(15)
line = QLineF(normal.p2(), point)
self.label.setPos(line.pointAt(.5))
self.squares.placeBelow(self.label)
self.setLine(line)
painter.drawLine(line)
# Draw arrow head
self.arrowHead.clear()
for point in self._arrowhead_points(line):
self.arrowHead.append(point)
painter.drawPolygon(self.arrowHead)
class Line( QGraphicsLineItem ):
"""Defines a line by two points. If points are moved, line follows these movements."""
def __init__( self, startPoint, endPoint, ccs, paintToBorder = False, showIncline = False, color = 'orange', minLength = 0 ):
super( Line, self ).__init__( ccs )
self.startPoint = startPoint
self.endPoint = endPoint
self.ccs = ccs
self.paintToBorder = paintToBorder
self.showIncline = showIncline
self.color = color
self.visible = True
# by default we only want to draw lines if its two
# defining points are not too close together
self.drawAlways = False
self.minLength = minLength # pixel
# grmbl. Line was designed to be defined by two Point.Points. Now I want to be able to define
# lines as well from QPointFs.
try:
self.Rect = QRectF( self.startPoint.x, self.startPoint.y, self.endPoint.x, self.endPoint.y )
except:
self.Rect = QRectF( self.startPoint.x(), self.startPoint.y(), self.endPoint.x(), self.endPoint.y() )
def boundingRect( self ):
return self.Rect
def paint( self, painter, option, widget=None ):
if self.visible == True:
painter.setPen( QColor( self.color ) )
# see try-catch (pardon me) above
try:
self.sp = CST.toCcsCoord( self.ccs, self.startPoint.x, self.startPoint.y )
self.ep = CST.toCcsCoord( self.ccs, self.endPoint.x, self.endPoint.y )
except:
self.sp = CST.toCcsCoord( self.ccs, self.startPoint.x(), self.startPoint.y() )
self.ep = CST.toCcsCoord( self.ccs, self.endPoint.x(), self.endPoint.y() )
self.Rect = QRectF( self.sp, self.ep )
self.line = QLineF( self.sp, self.ep )
if self.line.length() > self.minLength or self.drawAlways == True:
painter.drawLine( self.line )
if self.paintToBorder == True:
# paint line to approximately the edge of the ccs.
ep2 = self.line.pointAt( self.ccs.width / self.line.length() * 2)
painter.drawLine(self.ep,ep2)
sp2 = self.line.pointAt(-self.ccs.width / self.line.length() * 2)
painter.drawLine(self.sp,sp2)
if self.showIncline == True:
incline = ( self.endPoint.y - self.startPoint.y ) / ( self.endPoint.x - self.startPoint.x )
# print text limited to 2 decimal digits.
painter.setBackground ( QBrush ( QColor( 'lightGrey' ) ) )
painter.setBackgroundMode (Qt.BGMode(1))
painter.setPen( QColor( 'black' ) )
#~ painter.drawText( self.ep.x() + 10, self.ep.y() + 10, QString ( '%.2f' %(incline) ) )
def setVisible( self, value ):
self.visible = value
def setPosition( self, startPoint, endPoint ):
self.startPoint = startPoint
self.endPoint = endPoint
def updateYourself( self, xDelta, yDelta ):
# There is no action needed, as a line gets its information
# from startPoint and endPoint
# Just adjust self.Rect to avoid case where line disappears mysteriously and after then,
# paint() is never called again
self.Rect = QRectF( self.startPoint.x, self.startPoint.y, self.endPoint.x, self.endPoint.y )
def adjust(self):
line = QLineF(self.mapFromItem(self.source, 0, 0),
self.mapFromItem(self.dest, 0, 0))
self.label.setPos(line.pointAt(.5))
self.setLine(self.__transform().map(line))
def adjust(self):
line = QLineF(self.mapFromItem(self.source, 0, 0),
self.mapFromItem(self.dest, 0, 0))
self.label.setPos(line.pointAt(.5))
self.setLine(self.__transform().map(line))
def adjust(self):
line = QLineF(self.source.pos(), self.dest.pos())
self.setLine(line)
self.label.setPos(
line.pointAt(.5) - self.label.boundingRect().center())
self.squares.placeBelow(self.label)
def __getSelectedCenter(self):
tLine = QLineF(self.__selected.mapToScene(self.__selected.boundingRect().topLeft()),
self.__selected.mapToScene(self.__selected.boundingRect().topRight()))
return tLine.pointAt(0.5)
def adjust(self):
line = QLineF(self.source.pos(), self.dest.pos())
self.setLine(line)
self.label.setPos(line.pointAt(.5) - self.label.boundingRect().center())
self.squares.placeBelow(self.label)
def render(o):
path = QPainterPath()
# unit_x gives offset and direction of the x base vector. Start and end should be the grid points.
# move the endpoints inwards an unnoticable bit, so that the intersection detector
# won't trip on the common endpoint.
u_x = QLineF(o.unit_x.pointAt(0.0001), o.unit_x.pointAt(0.9999))
path.moveTo(u_x.p1())
if o.is_straight:
path.lineTo(u_x.p2())
return path
if o.flipped:
u_x = QLineF(u_x.p2(), u_x.p1())
u_y = u_x.normalVector()
# move y unit to start at (0,0).
u_y.translate(-u_y.p1())
scaling = o.length_base / u_x.length() * o.size_correction
if o.basewidth * scaling > 0.8:
# Plug is too large for the edge length. Make it smaller.
scaling = 0.8 / o.basewidth
# some magic numbers here... carefully fine-tuned, better leave them as they are.
ends_ctldist = 0.4
#base_lcdist = 0.1 * scaling
base_ucdist = 0.05 * scaling
knob_lcdist = 0.6 * o.knobsize * scaling
knob_ucdist = 0.8 * o.knobsize * scaling
# set up piece -- here is where the really interesting stuff happens.
# We will work from the ends inwards, so that symmetry counterparts are adjacent.
# The QLine.pointAt function is used to transform everything into the coordinate
# space defined by the us.
# -- end points
r1y = ends_ctldist * o.basepos * dsin(o.startangle)
q6y = ends_ctldist * (1. - o.basepos) * dsin(o.endangle)
p1 = u_x.p1()
p6 = u_x.p2()
r1 = u_x.pointAt(
ends_ctldist * o.basepos * dcos(o.startangle)) + u_y.pointAt(r1y)
q6 = u_x.pointAt(1. - ends_ctldist * (1. - o.basepos) *
dcos(o.endangle)) + u_y.pointAt(q6y)
# -- base points
p2x = o.basepos - 0.5 * o.basewidth * scaling
p5x = o.basepos + 0.5 * o.basewidth * scaling
if p2x < 0.1 or p5x > 0.9:
# knob to large. center knob on the edge. (o.basewidth * scaling < 0.8 -- see above)
p2x = 0.5 - 0.5 * o.basewidth * scaling
p5x = 0.5 + 0.5 * o.basewidth * scaling
#base_y = r1y > q6y ? r1y : q6y
#base_y = 0.5*(r1y + q6y)
base_y = -o.baseroundness * ends_ctldist * min(p2x, 1. - p5x)
if base_y > 0:
base_y = 0
base_lcy = base_y * 2.0
base_y += base_ucdist / 2
base_lcy -= base_ucdist / 2
#base_lcy = r1y
#if (q6y < r1y): base_lcy = q6y
# at least -base_ucdist from base_y
#if (base_lcy > base_y - base_ucdist): base_lcy = base_y-base_ucdist
q2 = u_x.pointAt(p2x) + u_y.pointAt(base_lcy)
r5 = u_x.pointAt(p5x) + u_y.pointAt(base_lcy)
p2 = u_x.pointAt(p2x) + u_y.pointAt(base_y)
p5 = u_x.pointAt(p5x) + u_y.pointAt(base_y)
r2 = u_x.pointAt(p2x) + u_y.pointAt(base_y + base_ucdist)
q5 = u_x.pointAt(p5x) + u_y.pointAt(base_y + base_ucdist)
if o._is_plugless:
if not o.flipped:
path.cubicTo(r1, q2, p2)
path.cubicTo(r2, q5, p5)
path.cubicTo(r5, q6, p6)
else:
path.cubicTo(q6, r5, p5)
path.cubicTo(q5, r2, p2)
path.cubicTo(q2, r1, p1)
return path
# -- knob points
p3x = p2x - o.knobsize * scaling * dsin(o.knobangle - o.knobtilt)
p4x = p5x + o.knobsize * scaling * dsin(o.knobangle + o.knobtilt)
# for the y coordinate, knobtilt sign was swapped. Knobs look better this way...
# like x offset from base points y, but that is 0.
p3y = o.knobsize * scaling * dcos(o.knobangle + o.knobtilt) + base_y
p4y = o.knobsize * scaling * dcos(o.knobangle - o.knobtilt) + base_y
q3 = u_x.pointAt(p3x) + u_y.pointAt(p3y - knob_lcdist)
r4 = u_x.pointAt(p4x) + u_y.pointAt(p4y - knob_lcdist)
p3 = u_x.pointAt(p3x) + u_y.pointAt(p3y)
p4 = u_x.pointAt(p4x) + u_y.pointAt(p4y)
r3 = u_x.pointAt(p3x) + u_y.pointAt(p3y + knob_ucdist)
q4 = u_x.pointAt(p4x) + u_y.pointAt(p4y + knob_ucdist)
# done setting up. construct path.
# if flipped, add points in reverse.
if not o.flipped:
path.cubicTo(r1, q2, p2)
path.cubicTo(r2, q3, p3)
path.cubicTo(r3, q4, p4)
path.cubicTo(r4, q5, p5)
path.cubicTo(r5, q6, p6)
else:
path.cubicTo(q6, r5, p5)
path.cubicTo(q5, r4, p4)
path.cubicTo(q4, r3, p3)
path.cubicTo(q3, r2, p2)
path.cubicTo(q2, r1, p1)
return path
