def gripStretchQgsLineStringGeometry(geom, basePt, ptListToStretch, offSetX, offSetY, tolerance2ApproxCurve):
"""
Stira i punti di grip di una linestring che sono contenuti in ptListToStretch
geom = geometria da stirare
basePt = punto base
ptListToStretch = lista dei punti da stirare
offSetX = spostamento X
offSetY = spostamento Y
"""
obj = qad_utils.whatGeomIs(0, geom)
if (type(obj) != list and type(obj) != tuple):
objType = obj.whatIs()
if objType == "CIRCLE": # se é cerchio
newCircle = gripStretchCircle(obj, basePt, ptListToStretch, offSetX, offSetY, tolerance2ApproxCurve)
if newCircle is not None:
return QgsGeometry.fromPolyline(newCircle.asPolyline(tolerance2ApproxCurve))
elif objType == "ARC": # se é arco
newArc = gripStretchArc(obj, ptListToStretch, offSetX, offSetY, tolerance2ApproxCurve)
if newArc is not None:
return QgsGeometry.fromPolyline(newArc.asPolyline(tolerance2ApproxCurve))
return None
linearObjectListToStretch = qad_utils.QadLinearObjectList()
linearObjectListToStretch.fromPolyline(geom.asPolyline())
atPart = 0
while atPart < linearObjectListToStretch.qty():
linearObject = linearObjectListToStretch.getLinearObjectAt(atPart)
if linearObject.isSegment():
pt = linearObject.getStartPt()
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
# cambio punto iniziale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
linearObject.setStartPt(pt)
pt = linearObject.getEndPt()
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
# cambio punto finale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
linearObject.setEndPt(pt)
else: # se è arco
newArc, newInverseFlag = gripStretchArc(linearObject.getArc(), ptListToStretch, offSetX, offSetY, tolerance2ApproxCurve, linearObject.isInverseArc())
if newArc is None:
return None
linearObject.setArc(newArc, newInverseFlag)
atPart = atPart + 1
pt = linearObjectListToStretch.getCentroid(tolerance2ApproxCurve) # verifico se polilinea ha un centroide
if pt is not None:
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
linearObjectListToStretch.move(offSetX, offSetY)
pts = linearObjectListToStretch.asPolyline(tolerance2ApproxCurve)
stretchedGeom = QgsGeometry.fromPolyline(pts)
return stretchedGeom
def getStartEndPointClosestPartWithContext(entity, point, destCrs): # legge il punto iniziale e finale della parte più vicina al punto di selezione # se non si tratta di cerchio altrimenti ritorna l'oggetto QadCircle geom = entity.getGeometry() # trasformo la geometria in screen coordinate coordTransform = QgsCoordinateTransform(entity.layer.crs(), destCrs) # trasformo la geometria geom.transform(coordTransform) return qad_utils.whatGeomIs(point, geom)
def stretchQgsLineStringGeometry(geom, containerGeom, offSetX, offSetY, tolerance2ApproxCurve):
"""
Stira i punti di una linestring che sono contenuti in containerGeom
point = punto da tirare
containerGeom = può essere una QgsGeometry rappresentante un poligono contenente i punti di geom da stirare
oppure una lista dei punti da stirare
offSetX = spostamento X
offSetY = spostamento Y
"""
obj = qad_utils.whatGeomIs(0, geom)
if (type(obj) != list and type(obj) != tuple):
objType = obj.whatIs()
if objType == "CIRCLE": # se é cerchio
if isPtContainedForStretch(obj.center, containerGeom): # se il punto è contenuto in containerGeom
obj.center.setX(obj.center.x() + offSetX)
obj.center.setY(obj.center.y() + offSetY)
return QgsGeometry.fromPolyline(obj.asPolyline(tolerance2ApproxCurve))
stretchedGeom = QgsGeometry(geom)
snapper = QadSnapper()
points = snapper.getEndPoints(stretchedGeom)
del snapper
linearObjectListToStretch = qad_utils.QadLinearObjectList()
linearObjectListToStretch.fromPolyline(geom.asPolyline())
for point in points:
if isPtContainedForStretch(point, containerGeom): # se il punto è contenuto in containerGeom
atPart = linearObjectListToStretch.containsPt(point)
while atPart >= 0:
linearObject = linearObjectListToStretch.getLinearObjectAt(atPart)
pt = linearObject.getStartPt()
if qad_utils.ptNear(pt, point): # cambio punto iniziale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
if linearObject.isSegment():
linearObject.setStartPt(pt)
else:
oldArc = linearObject.getArc()
middlePt = oldArc.getMiddlePt()
distFromMiddleChord = qad_utils.getDistance(middlePt, qad_utils.getPerpendicularPointOnInfinityLine(oldArc.getStartPt(), oldArc.getEndPt(), middlePt))
newArc = QadArc()
if linearObject.isInverseArc():
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getStartPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getStartPt()) + math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(oldArc.getStartPt(), middlePt, pt) == False:
return None
else:
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getEndPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getEndPt()) - math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(pt, middlePt, oldArc.getEndPt()) == False:
return None
linearObject.setArc(newArc, linearObject.isInverseArc())
else:
pt = linearObject.getEndPt()
if qad_utils.ptNear(pt, point): # cambio punto finale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
if linearObject.isSegment():
linearObject.setEndPt(pt)
else:
oldArc = linearObject.getArc()
middlePt = oldArc.getMiddlePt()
distFromMiddleChord = qad_utils.getDistance(middlePt, qad_utils.getPerpendicularPointOnInfinityLine(oldArc.getStartPt(), oldArc.getEndPt(), middlePt))
newArc = QadArc()
if linearObject.isInverseArc():
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getEndPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getEndPt()) - math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(pt, middlePt, oldArc.getEndPt()) == False:
return None
else:
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getStartPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getStartPt()) + math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(oldArc.getStartPt(), middlePt, pt) == False:
return None
linearObject.setArc(newArc, linearObject.isInverseArc())
atPart = linearObjectListToStretch.containsPt(point, atPart + 1)
pts = linearObjectListToStretch.asPolyline(tolerance2ApproxCurve)
stretchedGeom = QgsGeometry.fromPolyline(pts)
return stretchedGeom
def gripStretchQgsLineStringGeometry(geom, basePt, ptListToStretch, offSetX, offSetY, tolerance2ApproxCurve):
"""
Stira i punti di grip di una linestring che sono contenuti in ptListToStretch
geom = geometria da stirare
basePt = punto base
ptListToStretch = lista dei punti da stirare
offSetX = spostamento X
offSetY = spostamento Y
"""
if tolerance2ApproxCurve == None:
tolerance = QadVariables.get(QadMsg.translate("Environment variables", "TOLERANCE2APPROXCURVE"))
else:
tolerance = tolerance2ApproxCurve
obj = qad_utils.whatGeomIs(0, geom)
if (type(obj) != list and type(obj) != tuple):
objType = obj.whatIs()
if objType == "CIRCLE": # se é cerchio
newCircle = gripStretchCircle(obj, basePt, ptListToStretch, offSetX, offSetY, tolerance)
if newCircle is not None:
return QgsGeometry.fromPolyline(newCircle.asPolyline(tolerance))
elif objType == "ARC": # se é arco
newArc = gripStretchArc(obj, ptListToStretch, offSetX, offSetY, tolerance)
if newArc is not None:
return QgsGeometry.fromPolyline(newArc.asPolyline(tolerance))
return None
linearObjectListToStretch = qad_utils.QadLinearObjectList()
linearObjectListToStretch.fromPolyline(geom.asPolyline())
atPart = 0
while atPart < linearObjectListToStretch.qty():
linearObject = linearObjectListToStretch.getLinearObjectAt(atPart)
if linearObject.isSegment():
pt = linearObject.getStartPt()
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
# cambio punto iniziale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
linearObject.setStartPt(pt)
pt = linearObject.getEndPt()
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
# cambio punto finale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
linearObject.setEndPt(pt)
else: # se è arco
newArc, newInverseFlag = gripStretchArc(linearObject.getArc(), ptListToStretch, offSetX, offSetY, tolerance, linearObject.isInverseArc())
if newArc is None:
return None
linearObject.setArc(newArc, newInverseFlag)
atPart = atPart + 1
pt = linearObjectListToStretch.getCentroid(tolerance) # verifico se polilinea ha un centroide
if pt is not None:
if isPtContainedForStretch(pt, ptListToStretch): # se il punto è contenuto in ptListToStretch
linearObjectListToStretch.move(offSetX, offSetY)
pts = linearObjectListToStretch.asPolyline(tolerance)
stretchedGeom = QgsGeometry.fromPolyline(pts)
return stretchedGeom
def stretchQgsLineStringGeometry(geom, containerGeom, offSetX, offSetY, tolerance2ApproxCurve = None):
"""
Stira i punti di una linestring che sono contenuti in containerGeom
point = punto da tirare
containerGeom = può essere una QgsGeometry rappresentante un poligono contenente i punti di geom da stirare
oppure una lista dei punti da stirare
offSetX = spostamento X
offSetY = spostamento Y
"""
if tolerance2ApproxCurve == None:
tolerance = QadVariables.get(QadMsg.translate("Environment variables", "TOLERANCE2APPROXCURVE"))
else:
tolerance = tolerance2ApproxCurve
obj = qad_utils.whatGeomIs(0, geom)
if (type(obj) != list and type(obj) != tuple):
objType = obj.whatIs()
if objType == "CIRCLE": # se é cerchio
if isPtContainedForStretch(obj.center, containerGeom): # se il punto è contenuto in containerGeom
obj.center.setX(obj.center.x() + offSetX)
obj.center.setY(obj.center.y() + offSetY)
return QgsGeometry.fromPolyline(obj.asPolyline(tolerance))
stretchedGeom = QgsGeometry(geom)
snapper = QadSnapper()
points = snapper.getEndPoints(stretchedGeom)
del snapper
linearObjectListToStretch = qad_utils.QadLinearObjectList()
linearObjectListToStretch.fromPolyline(geom.asPolyline())
for point in points:
if isPtContainedForStretch(point, containerGeom): # se il punto è contenuto in containerGeom
atPart = linearObjectListToStretch.containsPt(point)
while atPart >= 0:
linearObject = linearObjectListToStretch.getLinearObjectAt(atPart)
pt = linearObject.getStartPt()
if qad_utils.ptNear(pt, point): # cambio punto iniziale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
if linearObject.isSegment():
linearObject.setStartPt(pt)
else:
oldArc = linearObject.getArc()
middlePt = oldArc.getMiddlePt()
distFromMiddleChord = qad_utils.getDistance(middlePt, qad_utils.getPerpendicularPointOnInfinityLine(oldArc.getStartPt(), oldArc.getEndPt(), middlePt))
newArc = QadArc()
if linearObject.isInverseArc():
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getStartPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getStartPt()) + math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(oldArc.getStartPt(), middlePt, pt) == False:
return None
else:
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getEndPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getEndPt()) - math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(pt, middlePt, oldArc.getEndPt()) == False:
return None
linearObject.setArc(newArc, linearObject.isInverseArc())
else:
pt = linearObject.getEndPt()
if qad_utils.ptNear(pt, point): # cambio punto finale
pt.setX(pt.x() + offSetX)
pt.setY(pt.y() + offSetY)
if linearObject.isSegment():
linearObject.setEndPt(pt)
else:
oldArc = linearObject.getArc()
middlePt = oldArc.getMiddlePt()
distFromMiddleChord = qad_utils.getDistance(middlePt, qad_utils.getPerpendicularPointOnInfinityLine(oldArc.getStartPt(), oldArc.getEndPt(), middlePt))
newArc = QadArc()
if linearObject.isInverseArc():
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getEndPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getEndPt()) - math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(pt, middlePt, oldArc.getEndPt()) == False:
return None
else:
middlePt = qad_utils.getMiddlePoint(pt, oldArc.getStartPt())
middlePt = qad_utils.getPolarPointByPtAngle(middlePt, \
qad_utils.getAngleBy2Pts(pt, oldArc.getStartPt()) + math.pi / 2, \
distFromMiddleChord)
if newArc.fromStartSecondEndPts(oldArc.getStartPt(), middlePt, pt) == False:
return None
linearObject.setArc(newArc, linearObject.isInverseArc())
atPart = linearObjectListToStretch.containsPt(point, atPart + 1)
pts = linearObjectListToStretch.asPolyline(tolerance)
stretchedGeom = QgsGeometry.fromPolyline(pts)
return stretchedGeom