def __newPolygonCurve(self, curve_v2, distance, curved):
"""
To create a duplicate curve for a polygon curves
:param curve_v2: curve to duplicate
:param distance: distance where to
:param curved: if the line is curved
:return: new duplicate curve
"""
if curved:
new_line_v2 = QgsCircularStringV2()
else:
new_line_v2 = QgsLineStringV2()
points = []
for pos in range(curve_v2.numPoints()):
if pos == 0:
pos1 = curve_v2.numPoints() - 2
else:
pos1 = pos - 1
pos2 = pos
if pos == (curve_v2.numPoints() - 1):
pos3 = 1
else:
pos3 = pos + 1
angle1 = Circle.angle(curve_v2.pointN(pos1), curve_v2.pointN(pos2))
angle2 = Circle.angle(curve_v2.pointN(pos), curve_v2.pointN(pos3))
angle = old_div(float(pi + angle1 + angle2), 2)
dist = old_div(float(distance),
sin(old_div(float(pi + angle1 - angle2), 2)))
points.append(self.__newPoint(angle, curve_v2.pointN(pos), dist))
new_line_v2.setPoints(points)
return new_line_v2
def exportToQgsCircularStringV2(self):
"""Export CADCircle to a QgsCircularStringV2"""
QgsCircString = QgsCircularStringV2()
QgsCircString.setPoints([
QgsPointV2(p)
for p in [self._ptStart, self._ptArc, self._ptEnd]
])
return QgsCircString
def __newArc(self, arc_v2, distance):
curve_v2 = QgsCircularStringV2()
points = []
circle = Circle(arc_v2.pointN(0), arc_v2.pointN(1), arc_v2.pointN(2))
points.append(self.newPoint(circle.angle1(), arc_v2.pointN(0), distance))
points.append(self.newPoint(circle.angle2(), arc_v2.pointN(1), distance))
points.append(self.newPoint(circle.angle3(), arc_v2.pointN(2), distance))
curve_v2.setPoints(points)
return curve_v2
def exportToQgsCircularStringV2(self):
"""Export CADCircle to a QgsCircularStringV2"""
quadrant = self.quadrant()
quad = [QgsPointV2(p.x, p.y) for p in quadrant] + \
[QgsPointV2(quadrant[0].x, quadrant[0].y)]
QgsCircString = QgsCircularStringV2()
QgsCircString.setPoints(quad)
return QgsCircString
def __newCurve(self, curved, line_v2, dx, dy):
if curved:
newCurve = QgsCircularStringV2()
else:
newCurve = QgsLineStringV2()
points = []
for pos in xrange(line_v2.numPoints()):
x = line_v2.pointN(pos).x() - dx
y = line_v2.pointN(pos).y() - dy
pt = QgsPointV2(x, y)
pt.addZValue(line_v2.pointN(pos).z())
points.append(pt)
newCurve.setPoints(points)
return newCurve
def __newArc(self, arc_v2, distance):
"""
To duplicate a curve at a given distance
:param arc_v2: the curve to duplicate
:param distance: the given distance
:return: the new curve
"""
curve_v2 = QgsCircularStringV2()
points = []
circle = Circle(arc_v2.pointN(0), arc_v2.pointN(1), arc_v2.pointN(2))
points.append(self.__newPoint(circle.angle1(), arc_v2.pointN(0), distance))
points.append(self.__newPoint(circle.angle2(), arc_v2.pointN(1), distance))
points.append(self.__newPoint(circle.angle3(), arc_v2.pointN(2), distance))
curve_v2.setPoints(points)
return curve_v2
def __createLine(tab, curved):
"""
To create a new line V2 from a list of points coordinates
:param tab: list of points coordinates
:param curved: true if it has curves, false if it hasn't
:return: the new line as QgsLineStringV2/QgsCircularStringV2, or none
"""
if len(tab) < 2:
return None
points = []
for pt in tab:
pt_tab = pt.strip().split()
points.append(GeometryV2.__createPoint(pt_tab))
if curved:
lineV2 = QgsCircularStringV2()
else:
lineV2 = QgsLineStringV2()
lineV2.setPoints(points)
return lineV2
def __onDstOk(self):
"""
When the Ok button in Intersect Distance Dialog is pushed
"""
self.__distance = float(self.__dstDlg.observation().text())
circle = QgsCircularStringV2()
x = self.__dstDlg.mapPoint().x()
y = self.__dstDlg.mapPoint().y()
circle.setPoints([
QgsPointV2(x + self.__distance * cos(pi / 180 * a),
y + self.__distance * sin(pi / 180 * a))
for a in range(0, 361, 90)
])
lineLayer = self.__lineLayer()
lineLayer.startEditing()
feature = QgsFeature()
feature.setGeometry(QgsGeometry(circle))
fields = lineLayer.pendingFields()
feature.setFields(fields)
fieldsNames = [fields.at(pos).name() for pos in range(fields.count())]
if "distance" in fieldsNames:
feature.setAttribute("distance", self.__distance)
if "x" in fieldsNames:
feature.setAttribute("x", self.__dstDlg.mapPoint().x())
if "y" in fieldsNames:
feature.setAttribute("y", self.__dstDlg.mapPoint().y())
lineLayer.addFeature(feature)
# lineLayer.updateExtents()
lineLayer.commitChanges()
# center
pointLayer = self.__pointLayer()
pointLayer.startEditing()
feature = QgsFeature()
feature.setGeometry(QgsGeometry().fromPoint(self.__dstDlg.mapPoint()))
fields = pointLayer.pendingFields()
feature.setFields(fields)
pointLayer.addFeature(feature)
pointLayer.commitChanges()
self.__dstDlg.accept()
self.__cancel()
def __newCurve(curved, line_v2, dx, dy):
"""
To create a new moved line
:param curved: if the line is curved
:param line_v2: the original line
:param dx: x translation
:param dy: y translation
:return: the new line
"""
if curved:
newCurve = QgsCircularStringV2()
else:
newCurve = QgsLineStringV2()
points = []
for pos in range(line_v2.numPoints()):
x = line_v2.pointN(pos).x() - dx
y = line_v2.pointN(pos).y() - dy
pt = QgsPointV2(x, y)
pt.addZValue(line_v2.pointN(pos).z())
points.append(pt)
newCurve.setPoints(points)
return newCurve
def __newLine(self, curve_v2, dx, dy, curved):
"""
To create a new moved line for a part of a polygon
:param curve_v2: the original line
:param dx: x translation
:param dy: y translation
:return: the line as lineV2
"""
if curved:
new_line_v2 = QgsCircularStringV2()
else:
new_line_v2 = QgsLineStringV2()
points = []
for pos in xrange(curve_v2.numPoints()):
x = curve_v2.pointN(pos).x() - dx
y = curve_v2.pointN(pos).y() - dy
pt = QgsPointV2(x, y)
pt.addZValue(curve_v2.pointN(pos).z())
points.append(pt)
new_line_v2.setPoints(points)
return new_line_v2