def config(self, specMap={}):
if not super(RadiusDim, self).config(specMap):
return
arcRadius = self.specMap['arc'].radius()
pos = self.specMap['pos']
pp = QPainterPath()
arcCenter = self.specMap['arc'].center()
# is the label outside the arc
labelOutside = QVector2D(pos - arcCenter).length() > arcRadius
# is the label to the right of the arc's y axis?
labelRight = pos.x() > arcCenter.x()
br = self.dimText.sceneBoundingRect().normalized()
# arrow pointing toward arc center point
if self.specMap['outside']:
if labelOutside:
jogLen = self.scene().pixelsToScene(self.jogLineLen)
if labelRight:
jogV = QVector2D(-1, 0).normalized()
jogSp = QPointF(br.left(), br.center().y())
else:
jogV = QVector2D(1, 0).normalized()
jogSp = QPointF(br.right(), br.center().y())
jogEp = jogSp + (jogV * jogLen).toPointF()
ap = pointOnArc(jogEp, arcCenter, arcRadius)
av = QVector2D(arcCenter - jogEp)
self.arrow.config({'pos': ap, 'dir': av})
pp.moveTo(jogSp)
pp.lineTo(jogEp)
pp.lineTo(ap)
# label inside arc
else:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
ap = pointOnArc(pos, arcCenter, arcRadius)
av = QVector2D(arcCenter - ap).normalized()
self.arrow.config({'pos': ap, 'dir': av})
# fixed len arrow leader
ep = ap + (av * -1 * leaderLen).toPointF()
pp.moveTo(ap)
pp.lineTo(ep)
# arrow pointing away from arc center
else:
if labelOutside:
jogLen = self.scene().pixelsToScene(self.jogLineLen)
if labelRight:
jogV = QVector2D(-1, 0).normalized()
jogSp = QPointF(br.left(), br.center().y())
else:
jogV = QVector2D(1, 0).normalized()
jogSp = QPointF(br.right(), br.center().y())
jogEp = jogSp + (jogV * jogLen).toPointF()
ap = pointOnArc(jogEp, arcCenter, arcRadius)
av = QVector2D(ap - arcCenter)
self.arrow.config({'pos': ap, 'dir': av})
pp.moveTo(arcCenter)
pp.lineTo(ap)
pp.lineTo(jogEp)
pp.lineTo(jogSp)
# label inside the arc
else:
ap = pointOnArc(pos, arcCenter, arcRadius)
av = QVector2D(ap - arcCenter)
self.arrow.config({'pos': ap, 'dir': av})
# label to arc center leader
xp1 = xsectLineRect1(QLineF(pos, arcCenter), br)
if xp1:
pp.moveTo(xp1)
pp.lineTo(arcCenter)
# label to arrow leader
xp2 = xsectLineRect1(QLineF(pos, ap), br)
if xp2:
pp.moveTo(xp2)
pp.lineTo(ap)
# extension arc
arc = self.specMap['arc']
arcStart = arc.start()
arcSpan = arc.span()
if not isPointOnArc(ap, arcCenter, arcStart, arcSpan):
# arc rect
p = QPointF(arcRadius, arcRadius)
r = QRectF(arcCenter - p, arcCenter + p)
bisV = arc.bisector()
# arc center to arrow tip vector
apV = QVector2D(ap - arcCenter).normalized()
# bisector rotated 90
bis90V = QVector2D(-bisV.y(), bisV.x())
spV = arc.startAngleVector()
spLeftOfBisector = spV.dotProduct(spV, bis90V) >= 0.0
epV = arc.endAngleVector()
# is the arrow tip to the left of the bisector?
if bis90V.dotProduct(apV, bis90V) >= 0.0:
# is the start point left of the bisector?
if spLeftOfBisector:
extensionArc = Arc.fromVectors(spV, apV, arcRadius, True)
else:
extensionArc = Arc.fromVectors(epV, apV, arcRadius, True)
pp.arcMoveTo(r, -extensionArc.start() - self.gapAngle)
pp.arcTo(r, -extensionArc.start() - self.gapAngle,
-extensionArc.span() - self.extAngle)
# arrow tip to right of bisector
else:
# is the start point left of the bisector?
if spLeftOfBisector:
extensionArc = Arc.fromVectors(epV, apV, arcRadius, False)
else:
extensionArc = Arc.fromVectors(spV, apV, arcRadius, False)
pp.arcMoveTo(r, -extensionArc.start() + self.gapAngle)
pp.arcTo(r, -extensionArc.start() + self.gapAngle,
-extensionArc.span() + self.extAngle)
self.setPath(pp)
def _configParallel(self, p1, p2, px, py, outside):
"""Define a parallel (diagonal) dimension.
p1 -- first ref point
p2 -- second ref point
px, py -- dimension label center point
outside -- True if arrows should point towards each other
p1 and p2 have different x and y coordinates
"""
pp = QPainterPath()
pos = QPointF(px, py)
v = QVector2D(pos - p1)
# from p1 to p2
u = QVector2D(p2 - p1).normalized()
# point on line through p1 and p2 where pos is projected
mp = (QVector2D(p1) + v.dotProduct(v, u) * u).toPointF()
# perpendicular vector pointing towards pos
sv = pos - mp
# new arrow positions
ap1 = p1 + sv
ap2 = p2 + sv
# vectors from label center point to arrow tips
lv1 = QVector2D(ap1 - pos)
lv2 = QVector2D(ap2 - pos)
# dim label is outside extension lines if lv1 & 2 point in the same dir
dimOutside = lv1.dotProduct(lv1.normalized(), lv2.normalized()) >= 0.0
br = self.dimText.sceneBoundingRect().normalized()
# arrows pointing towards each other
if outside:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
self.arrow1.config({'pos': ap1, 'dir': u})
self.arrow2.config({'pos': ap2, 'dir': u * -1})
if dimOutside:
if lv1.length() > lv2.length():
np = ap2 # ap2 is near point
fp = ap1
npv = u
else:
np = ap1
fp = ap2
npv = u * -1
pp.moveTo(np)
xp = xsectLineRect1(QLineF(pos, np), br)
if not xp:
ep = np + (npv * leaderLen).toPointF()
pp.lineTo(ep)
else:
pp.lineTo(xp)
ep = fp + (npv * -leaderLen).toPointF()
pp.moveTo(fp)
pp.lineTo(ep)
else:
ep = ap1 + (u * -leaderLen).toPointF()
pp.moveTo(ap1)
pp.lineTo(ep)
ep = ap2 + (u * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
# arrows pointing away from each other
else:
self.arrow1.config({'pos': ap1, 'dir': u * -1})
self.arrow2.config({'pos': ap2, 'dir': u})
if dimOutside:
if lv1.length() > lv2.length():
ep = ap1
else:
ep = ap2
xp = xsectLineRect1(QLineF(pos, ep), br)
pp.moveTo(xp)
pp.lineTo(ep)
else:
xp1 = xsectLineRect1(QLineF(pos, ap1), br)
if not xp1:
pp.moveTo(ap2)
else:
pp.moveTo(xp1)
pp.lineTo(ap1)
xp2 = xsectLineRect1(QLineF(pos, ap2), br)
if not xp2:
pp.moveTo(ap1)
else:
pp.moveTo(xp2)
pp.lineTo(ap2)
# extension lines
self._addExtensionLines(p1, p2, self.arrow1.pos(), self.arrow2.pos(),
pp)
self.setPath(pp)
def _configTwoLineSegs(self, line1, line2):
"""Dimension between two parallel lines.
line1, line2 -- QLineF
If the lines are not parallel, raise LinearDimException.
"""
# some checks first
lv1 = QVector2D(line1.p1() - line1.p2())
lv2 = QVector2D(line2.p1() - line2.p2())
dp = lv1.dotProduct(lv1.normalized(), lv2.normalized())
# XXX: constant 0.001
if 1.0 - abs(dp) > 0.001:
raise LinearDimException("Cannot dimension intersecting lines")
if linesCollinear(line1, line2):
raise LinearDimException("Cannot dimension collinear lines")
pp = QPainterPath()
pos = self.specMap['pos']
# arrow tip positions
ap1 = pointOnLine(pos, line1.p1(), line1.p2())
ap2 = pointOnLine(pos, line2.p1(), line2.p2())
# vector from label center to arrow tips
v1 = QVector2D(ap1 - pos)
v2 = QVector2D(ap2 - pos)
# find nearest line, arrow and vector to label
l1, l2 = line1, line2
if v1.length() > v2.length():
v1, v2 = v2, v1
ap1, ap2 = ap2, ap1
l1, l2 = l2, l1 # for extension lines
# label center is outside lines
dimOutside = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
br = self.dimText.sceneBoundingRect().normalized()
# arrows pointing in
if self.specMap['outside']:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
if dimOutside:
self.arrow1.config({'pos': ap1, 'dir': v1})
self.arrow2.config({'pos': ap2, 'dir': v2 * -1})
xp = xsectLineRect1(QLineF(pos, ap1), br)
if xp:
pp.moveTo(xp)
pp.lineTo(ap1)
v = v2.normalized()
ep = ap2 + (v2.normalized() * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
else:
self.arrow1.config({'pos': ap1, 'dir': v1 * -1})
self.arrow2.config({'pos': ap2, 'dir': v2 * -1})
v = v2.normalized()
ep = ap2 + (v2.normalized() * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
v = v1.normalized()
ep = ap1 + (v1.normalized() * leaderLen).toPointF()
pp.moveTo(ap1)
pp.lineTo(ep)
# arrows pointing out
else:
if dimOutside:
self.arrow1.config({'pos': ap1, 'dir': v1 * -1})
self.arrow2.config({'pos': ap2, 'dir': v2})
xp = xsectLineRect1(QLineF(pos, ap2), br)
if xp:
pp.moveTo(xp)
pp.lineTo(ap2)
else:
self.arrow1.config({'pos': ap1, 'dir': v1})
self.arrow2.config({'pos': ap2, 'dir': v2})
xp1 = xsectLineRect1(QLineF(pos, ap1), br)
if xp1:
pp.moveTo(xp1)
pp.lineTo(ap1)
xp2 = xsectLineRect1(QLineF(pos, ap2), br)
if xp2:
pp.moveTo(xp2)
pp.lineTo(ap2)
# extension lines
# TODO: rethink this, it renders okay, but...
p1 = ap1 # should I
p2 = ap2 # copy apN here?
# first
v1 = QVector2D(l1.p1() - ap1)
v2 = QVector2D(l1.p2() - ap1)
offLine = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
# set v1 to closest end point
if v1.length() > v2.length():
v1, v2 = v2, v1
if offLine:
p1 = ap1 + v1.toPointF()
# second
v1 = QVector2D(l2.p1() - ap2)
v2 = QVector2D(l2.p2() - ap2)
offLine = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
# set v1 to closest end point
if v1.length() > v2.length():
v1, v2 = v2, v1
if offLine:
p2 = ap2 + v1.toPointF()
self._addExtensionLines(p1, p2, ap1, ap2, pp)
self.setPath(pp)
def config(self, specMap={}):
if not super(RadiusDim, self).config(specMap):
return
arcRadius = self.specMap['arc'].radius()
pos = self.specMap['pos']
pp = QPainterPath()
arcCenter = self.specMap['arc'].center()
# is the label outside the arc
labelOutside = QVector2D(pos - arcCenter).length() > arcRadius
# is the label to the right of the arc's y axis?
labelRight = pos.x() > arcCenter.x()
br = self.dimText.sceneBoundingRect().normalized()
# arrow pointing toward arc center point
if self.specMap['outside']:
if labelOutside:
jogLen = self.scene().pixelsToScene(self.jogLineLen)
if labelRight:
jogV = QVector2D(-1, 0).normalized()
jogSp = QPointF(br.left(), br.center().y())
else:
jogV = QVector2D(1, 0).normalized()
jogSp = QPointF(br.right(), br.center().y())
jogEp = jogSp + (jogV * jogLen).toPointF()
ap = pointOnArc(jogEp, arcCenter, arcRadius)
av = QVector2D(arcCenter - jogEp)
self.arrow.config({'pos': ap, 'dir': av})
pp.moveTo(jogSp)
pp.lineTo(jogEp)
pp.lineTo(ap)
# label inside arc
else:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
ap = pointOnArc(pos, arcCenter, arcRadius)
av = QVector2D(arcCenter - ap).normalized()
self.arrow.config({'pos': ap, 'dir': av})
# fixed len arrow leader
ep = ap + (av * -1 * leaderLen).toPointF()
pp.moveTo(ap)
pp.lineTo(ep)
# arrow pointing away from arc center
else:
if labelOutside:
jogLen = self.scene().pixelsToScene(self.jogLineLen)
if labelRight:
jogV = QVector2D(-1, 0).normalized()
jogSp = QPointF(br.left(), br.center().y())
else:
jogV = QVector2D(1, 0).normalized()
jogSp = QPointF(br.right(), br.center().y())
jogEp = jogSp + (jogV * jogLen).toPointF()
ap = pointOnArc(jogEp, arcCenter, arcRadius)
av = QVector2D(ap - arcCenter)
self.arrow.config({'pos': ap, 'dir': av})
pp.moveTo(arcCenter)
pp.lineTo(ap)
pp.lineTo(jogEp)
pp.lineTo(jogSp)
# label inside the arc
else:
ap = pointOnArc(pos, arcCenter, arcRadius)
av = QVector2D(ap - arcCenter)
self.arrow.config({'pos': ap, 'dir': av})
# label to arc center leader
xp1 = xsectLineRect1(QLineF(pos, arcCenter), br)
if xp1:
pp.moveTo(xp1)
pp.lineTo(arcCenter)
# label to arrow leader
xp2 = xsectLineRect1(QLineF(pos, ap), br)
if xp2:
pp.moveTo(xp2)
pp.lineTo(ap)
# extension arc
arc = self.specMap['arc']
arcStart = arc.start()
arcSpan = arc.span()
if not isPointOnArc(ap, arcCenter, arcStart, arcSpan):
# arc rect
p = QPointF(arcRadius, arcRadius)
r = QRectF(arcCenter - p, arcCenter + p)
bisV = arc.bisector()
# arc center to arrow tip vector
apV = QVector2D(ap - arcCenter).normalized()
# bisector rotated 90
bis90V = QVector2D(-bisV.y(), bisV.x())
spV = arc.startAngleVector()
spLeftOfBisector = spV.dotProduct(spV, bis90V) >= 0.0
epV = arc.endAngleVector()
# is the arrow tip to the left of the bisector?
if bis90V.dotProduct(apV, bis90V) >= 0.0:
# is the start point left of the bisector?
if spLeftOfBisector:
extensionArc = Arc.fromVectors(spV, apV, arcRadius, True)
else:
extensionArc = Arc.fromVectors(epV, apV, arcRadius, True)
pp.arcMoveTo(r, -extensionArc.start() - self.gapAngle)
pp.arcTo(r, -extensionArc.start() - self.gapAngle,
-extensionArc.span() - self.extAngle)
# arrow tip to right of bisector
else:
# is the start point left of the bisector?
if spLeftOfBisector:
extensionArc = Arc.fromVectors(epV, apV, arcRadius, False)
else:
extensionArc = Arc.fromVectors(spV, apV, arcRadius, False)
pp.arcMoveTo(r, -extensionArc.start() + self.gapAngle)
pp.arcTo(r, -extensionArc.start() + self.gapAngle,
-extensionArc.span() + self.extAngle)
self.setPath(pp)
def _configParallel(self, p1, p2, px, py, outside):
"""Define a parallel (diagonal) dimension.
p1 -- first ref point
p2 -- second ref point
px, py -- dimension label center point
outside -- True if arrows should point towards each other
p1 and p2 have different x and y coordinates
"""
pp = QPainterPath()
pos = QPointF(px, py)
v = QVector2D(pos - p1)
# from p1 to p2
u = QVector2D(p2 - p1).normalized()
# point on line through p1 and p2 where pos is projected
mp = (QVector2D(p1) + v.dotProduct(v, u) * u).toPointF()
# perpendicular vector pointing towards pos
sv = pos - mp
# new arrow positions
ap1 = p1 + sv
ap2 = p2 + sv
# vectors from label center point to arrow tips
lv1 = QVector2D(ap1 - pos)
lv2 = QVector2D(ap2 - pos)
# dim label is outside extension lines if lv1 & 2 point in the same dir
dimOutside = lv1.dotProduct(lv1.normalized(), lv2.normalized()) >= 0.0
br = self.dimText.sceneBoundingRect().normalized()
# arrows pointing towards each other
if outside:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
self.arrow1.config({'pos': ap1, 'dir': u})
self.arrow2.config({'pos': ap2, 'dir': u * -1})
if dimOutside:
if lv1.length() > lv2.length():
np = ap2 # ap2 is near point
fp = ap1
npv = u
else:
np = ap1
fp = ap2
npv = u * -1
pp.moveTo(np)
xp = xsectLineRect1(QLineF(pos, np), br)
if not xp:
ep = np + (npv * leaderLen).toPointF()
pp.lineTo(ep)
else:
pp.lineTo(xp)
ep = fp + (npv * -leaderLen).toPointF()
pp.moveTo(fp)
pp.lineTo(ep)
else:
ep = ap1 + (u * -leaderLen).toPointF()
pp.moveTo(ap1)
pp.lineTo(ep)
ep = ap2 + (u * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
# arrows pointing away from each other
else:
self.arrow1.config({'pos': ap1, 'dir': u * -1})
self.arrow2.config({'pos': ap2, 'dir': u})
if dimOutside:
if lv1.length() > lv2.length():
ep = ap1
else:
ep = ap2
xp = xsectLineRect1(QLineF(pos, ep), br)
pp.moveTo(xp)
pp.lineTo(ep)
else:
xp1 = xsectLineRect1(QLineF(pos, ap1), br)
if not xp1:
pp.moveTo(ap2)
else:
pp.moveTo(xp1)
pp.lineTo(ap1)
xp2 = xsectLineRect1(QLineF(pos, ap2), br)
if not xp2:
pp.moveTo(ap1)
else:
pp.moveTo(xp2)
pp.lineTo(ap2)
# extension lines
self._addExtensionLines(p1, p2, self.arrow1.pos(), self.arrow2.pos(),
pp)
self.setPath(pp)
def _configTwoLineSegs(self, line1, line2):
"""Dimension between two parallel lines.
line1, line2 -- QLineF
If the lines are not parallel, raise LinearDimException.
"""
# some checks first
lv1 = QVector2D(line1.p1() - line1.p2())
lv2 = QVector2D(line2.p1() - line2.p2())
dp = lv1.dotProduct(lv1.normalized(), lv2.normalized())
# XXX: constant 0.001
if 1.0 - abs(dp) > 0.001:
raise LinearDimException("Cannot dimension intersecting lines")
if linesCollinear(line1, line2):
raise LinearDimException("Cannot dimension collinear lines")
pp = QPainterPath()
pos = self.specMap['pos']
# arrow tip positions
ap1 = pointOnLine(pos, line1.p1(), line1.p2())
ap2 = pointOnLine(pos, line2.p1(), line2.p2())
# vector from label center to arrow tips
v1 = QVector2D(ap1 - pos)
v2 = QVector2D(ap2 - pos)
# find nearest line, arrow and vector to label
l1, l2 = line1, line2
if v1.length() > v2.length():
v1, v2 = v2, v1
ap1, ap2 = ap2, ap1
l1, l2 = l2, l1 # for extension lines
# label center is outside lines
dimOutside = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
br = self.dimText.sceneBoundingRect().normalized()
# arrows pointing in
if self.specMap['outside']:
leaderLen = self.scene().pixelsToScene(self.leaderLen)
if dimOutside:
self.arrow1.config({'pos': ap1, 'dir': v1})
self.arrow2.config({'pos': ap2, 'dir': v2 * -1})
xp = xsectLineRect1(QLineF(pos, ap1), br)
if xp:
pp.moveTo(xp)
pp.lineTo(ap1)
v = v2.normalized()
ep = ap2 + (v2.normalized() * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
else:
self.arrow1.config({'pos': ap1, 'dir': v1 * -1})
self.arrow2.config({'pos': ap2, 'dir': v2 * -1})
v = v2.normalized()
ep = ap2 + (v2.normalized() * leaderLen).toPointF()
pp.moveTo(ap2)
pp.lineTo(ep)
v = v1.normalized()
ep = ap1 + (v1.normalized() * leaderLen).toPointF()
pp.moveTo(ap1)
pp.lineTo(ep)
# arrows pointing out
else:
if dimOutside:
self.arrow1.config({'pos': ap1, 'dir': v1 * -1})
self.arrow2.config({'pos': ap2, 'dir': v2})
xp = xsectLineRect1(QLineF(pos, ap2), br)
if xp:
pp.moveTo(xp)
pp.lineTo(ap2)
else:
self.arrow1.config({'pos': ap1, 'dir': v1})
self.arrow2.config({'pos': ap2, 'dir': v2})
xp1 = xsectLineRect1(QLineF(pos, ap1), br)
if xp1:
pp.moveTo(xp1)
pp.lineTo(ap1)
xp2 = xsectLineRect1(QLineF(pos, ap2), br)
if xp2:
pp.moveTo(xp2)
pp.lineTo(ap2)
# extension lines
# TODO: rethink this, it renders okay, but...
p1 = ap1 # should I
p2 = ap2 # copy apN here?
# first
v1 = QVector2D(l1.p1() - ap1)
v2 = QVector2D(l1.p2() - ap1)
offLine = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
# set v1 to closest end point
if v1.length() > v2.length():
v1, v2 = v2, v1
if offLine:
p1 = ap1 + v1.toPointF()
# second
v1 = QVector2D(l2.p1() - ap2)
v2 = QVector2D(l2.p2() - ap2)
offLine = v1.dotProduct(v1.normalized(), v2.normalized()) >= 0.0
# set v1 to closest end point
if v1.length() > v2.length():
v1, v2 = v2, v1
if offLine:
p2 = ap2 + v1.toPointF()
self._addExtensionLines(p1, p2, ap1, ap2, pp)
self.setPath(pp)
