def getLayersSettings(mapCanvas, types, snapType=None):
"""
To get the snapping config from different layers
:param mapCanvas: the used QgsMapCanvas
:param types: geometry types in use
:param snapType: snapping type
:return: list of layers config
"""
snap_layers = []
for layer in mapCanvas.layers():
if layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() in types:
snap_util = mapCanvas.snappingUtils()
mode = snap_util.snapToMapMode()
if mode == QgsSnappingUtils.SnapCurrentLayer and layer.id() != mapCanvas.currentLayer().id():
continue
if mode == QgsSnappingUtils.SnapAllLayers:
snap_index, tolerance, unitType = snap_util.defaultSettings()
snap_type = QgsPointLocator.Type(snap_index)
else:
noUse, enabled, snappingType, unitType, tolerance, avoidIntersection = \
QgsProject.instance().snapSettingsForLayer(layer.id())
if layer.type() == QgsMapLayer.VectorLayer and enabled:
if snapType is None:
if snappingType == QgsSnapper.SnapToVertex:
snap_type = QgsPointLocator.Vertex
elif snappingType == QgsSnapper.SnapToSegment:
snap_type = QgsPointLocator.Edge
elif snappingType == QgsSnapper.SnapToVertexAndSegment:
snap_type = QgsPointLocator.Edge and QgsPointLocator.Vertex
else:
snap_type = QgsPointLocator.All
else:
snap_type = snapType
else:
continue
snap_layers.append(QgsSnappingUtils.LayerConfig(layer, snap_type, tolerance, unitType))
return snap_layers
def cadCanvasMoveEvent(self, event):
"""
When the mouse is moved
:param event: mouse event
"""
if type(event) == QMoveEvent:
map_point = self.toMapCoordinates(event.pos())
else:
map_point = event.mapPoint()
if not self.__isEditing and not self.__findVertex and not self.__onMove:
laySettings = QgsSnappingUtils.LayerConfig(self.__layer,
QgsPointLocator.All, 10,
QgsTolerance.Pixels)
f_l = Finder.findClosestFeatureAt(map_point, self.canvas(),
[laySettings])
if f_l is not None and self.__lastFeatureId != f_l[0].id():
self.__lastFeatureId = f_l[0].id()
self.__layer.setSelectedFeatures([f_l[0].id()])
if f_l is None:
self.__layer.removeSelection()
self.__lastFeatureId = None
elif self.__findVertex:
if self.__rubberBand is not None:
self.__rubberBand.reset()
closest = self.__selectedFeature.geometry().closestVertex(
map_point)
color = QColor("red")
color.setAlphaF(0.78)
self.__rubberBand.setColor(color)
self.__rubberBand.setIcon(4)
self.__rubberBand.setIconSize(20)
self.__rubberBand.setToGeometry(
QgsGeometry().fromPoint(closest[0]), None)
elif self.__onMove:
if self.__rubberBand is not None:
self.__rubberBand.reset()
if self.__layer.geometryType() == QGis.Polygon:
self.__polygonPreview(map_point)
elif self.__layer.geometryType() == QGis.Line:
self.__linePreview(map_point)
else:
self.__pointPreview(map_point)
color = QColor("red")
color.setAlphaF(0.78)
self.__rubberBand.setColor(color)
self.__rubberBand.setWidth(2)
if self.__layer.geometryType() != QGis.Point:
self.__rubberBand.setLineStyle(Qt.DotLine)
else:
self.__rubberBand.setIcon(4)
self.__rubberBand.setIconSize(8)
if self.__rubberSnap is not None:
self.__rubberSnap.reset()
else:
self.__rubberSnap = QgsRubberBand(self.canvas(), QGis.Point)
self.__rubberSnap.setColor(color)
self.__rubberSnap.setWidth(2)
self.__rubberSnap.setIconSize(20)
match = Finder.snap(map_point, self.canvas())
if match.hasVertex() or match.hasEdge():
point = match.point()
if match.hasVertex():
if match.layer():
self.__rubberSnap.setIcon(4)
else:
self.__rubberSnap.setIcon(1)
if match.hasEdge():
intersection = Finder.snapCurvedIntersections(
point, self.canvas(), self)
if intersection is not None:
self.__rubberSnap.setIcon(1)
point = intersection
else:
self.__rubberSnap.setIcon(3)
self.__rubberSnap.setToGeometry(QgsGeometry().fromPoint(point),
None)
def __lineVertices(self, checkLayers=False):
"""
To check if vertices of others layers are crossing the displaying line
:param checkLayers: if we want to get the list of the other layers in return
:return: other layers list if requested
"""
if checkLayers:
otherLayers = []
self.__points = []
self.__selectedStarts = []
num = 0
num_lines = len(self.__selectedIds)
for iden in self.__selectedIds:
self.__selectedStarts.append(max(0, len(self.__points) - 1))
direction = self.__selectedDirections[num]
selected = None
for f in self.ownSettings.drawdownLayer.selectedFeatures():
if f.id() == iden:
selected = f
break
if selected is None:
self.__iface.messageBar().pushMessage(
QCoreApplication.translate("VDLTools",
"Error on selected"),
level=QgsMessageBar.CRITICAL,
duration=0)
continue
line_v2, curved = GeometryV2.asLineV2(selected.geometry(),
self.__iface)
if direction:
rg = range(line_v2.numPoints())
else:
rg = range(line_v2.numPoints() - 1, -1, -1)
rg_positions = []
for i in rg:
pt_v2 = line_v2.pointN(i)
x = pt_v2.x()
y = pt_v2.y()
doublon = False
for position in rg_positions:
if position['x'] == x and position['y'] == y and position[
'iden'] == iden:
self.__iface.messageBar().pushMessage(
QCoreApplication.translate(
"VDLTools", "Beware! the line ") + str(iden) +
QCoreApplication.translate(
"VDLTools",
" has 2 identical summits on the vertex ") +
str(i - 1) + QCoreApplication.translate(
"VDLTools", " same coordinates (X and Y). "
"Please correct the line geometry."),
level=QgsMessageBar.CRITICAL,
duration=0)
doublon = True
break
for item in self.__points:
if item['x'] == x and item['y'] == y:
item['z'][num] = pt_v2.z()
rg_positions.append({'x': x, 'y': y, 'iden': iden})
doublon = True
break
if not doublon:
rg_positions.append({'x': x, 'y': y, 'iden': iden})
z = []
for j in range(num_lines):
if j == num:
if pt_v2.z() == pt_v2.z():
z.append(pt_v2.z())
else:
z.append(0)
else:
z.append(None)
self.__points.append({'x': x, 'y': y, 'z': z})
if checkLayers:
combinedLayers = [self.ownSettings.drawdownLayer]
combinedLayers += self.ownSettings.refLayers + self.ownSettings.adjLayers
for layer in combinedLayers:
if layer in otherLayers:
continue
laySettings = QgsSnappingUtils.LayerConfig(
layer, QgsPointLocator.All,
self.SEARCH_TOLERANCE, QgsTolerance.LayerUnits)
fs = Finder.findFeaturesAt(QgsPoint(x, y),
laySettings, self)
if len(fs) > 0:
for f in fs:
if layer == self.ownSettings.drawdownLayer:
if f.id() not in self.__selectedIds:
closest = f.geometry(
).closestVertex(QgsPoint(x, y))
if closest[
4] < self.SEARCH_TOLERANCE:
if layer not in otherLayers:
otherLayers.append(layer)
elif layer not in otherLayers:
otherLayers.append(layer)
num += 1
if checkLayers:
return otherLayers
def __adjust(self):
"""
To look for adjustments and to display them
"""
self.__layers = self.__lineVertices(True)
self.__adjustments = []
self.__altitudes = []
for p in range(len(self.__points)):
pt = self.__points[p]
x = pt['x']
y = pt['y']
z = pt['z']
num_lines = len(self.__selectedIds)
drawdown = False
level = None
for layer in self.ownSettings.refLayers:
laySettings = QgsSnappingUtils.LayerConfig(
layer, QgsPointLocator.All, self.SEARCH_TOLERANCE,
QgsTolerance.LayerUnits)
feature = Finder.findClosestFeatureAt(
self.toMapCoordinates(layer, QgsPoint(x, y)), laySettings,
self)
if feature is not None:
point_v2 = GeometryV2.asPointV2(feature.geometry(),
self.__iface)
if point_v2.z() > 0:
if level is not None:
if (level - point_v2.z()) > 0.005:
self.__iface.messageBar(
).pushMessage(QCoreApplication.translate(
"VDLTools",
"More than one reference point, with 2 different elevations !!"
),
level=QgsMessageBar.CRITICAL,
duration=0)
self.__cancel()
return
level = point_v2.z()
comp = QCoreApplication.translate("VDLTools",
" (at invert)")
if str(feature.attribute(self.ownSettings.levelAtt)
) in self.ownSettings.levelVals:
drawdown = True
comp = QCoreApplication.translate(
"VDLTools", " (on pipe)")
if point_v2.z() == 0:
comp = QCoreApplication.translate(
"VDLTools", " (no elevation)")
self.__adjustments.append({
'point': p,
'previous': point_v2.z(),
'line': False,
'layer': layer,
'comp': comp,
'feature': feature,
'delta': False
})
diam = 0
for i in range(num_lines):
if z[i] is None:
continue
id_s = self.__selectedIds[i]
feature = QgsFeature()
self.ownSettings.drawdownLayer.getFeatures(
QgsFeatureRequest().setFilterFid(id_s)).nextFeature(
feature)
dtemp = feature.attribute(self.ownSettings.pipeDiam) / 1000
if dtemp > diam:
diam = dtemp
selected = None
for f in self.ownSettings.drawdownLayer.selectedFeatures():
if f.id() == id_s:
selected = f
break
self.__adjustments.append({
'point': p,
'previous': z[i],
'line': True,
'diam': dtemp,
'layer': self.ownSettings.drawdownLayer,
'feature': selected,
'delta': True
})
for layer in self.__layers:
laySettings = QgsSnappingUtils.LayerConfig(
layer, QgsPointLocator.All, self.SEARCH_TOLERANCE,
QgsTolerance.LayerUnits)
fs = Finder.findFeaturesAt(QgsPoint(x, y), laySettings, self)
if len(fs) == 0:
z.append(None)
else:
zz = []
for f in fs:
if layer == self.ownSettings.drawdownLayer:
if f.id() not in self.__selectedIds:
closest = f.geometry().closestVertex(
QgsPoint(x, y))
if closest[4] < self.SEARCH_TOLERANCE:
line, curved = GeometryV2.asLineV2(
f.geometry(), self.__iface)
zp = line.zAt(closest[1])
dtemp = f.attribute(
self.ownSettings.pipeDiam) / 1000
if dtemp > diam:
diam = dtemp
self.__adjustments.append({
'point':
p,
'previous':
zp,
'line':
False,
'diam':
dtemp,
'comp':
QCoreApplication.translate(
"VDLTools", " connected"),
'feature':
f,
'layer':
layer,
'delta':
True
})
if zp is None or zp != zp:
zz.append(0)
else:
zz.append(zp)
else:
zp = GeometryV2.asPointV2(f.geometry(),
self.__iface).z()
if zp is None or zp != zp:
zp = 0
zz.append(zp)
if layer in self.ownSettings.adjLayers:
self.__adjustments.append({
'point': p,
'previous': zp,
'line': False,
'layer': layer,
'feature': f,
'delta': True
})
if len(zz) == 0:
z.append(None)
elif len(zz) == 1:
z.append(zz[0])
else:
z.append(zz)
if level is not None:
if drawdown:
alt = level - diam
else:
alt = level
else:
alt = 0
dd = None
if drawdown:
dd = QCoreApplication.translate("VDLTools", "drawdown")
self.__altitudes.append({'diam': diam, 'drawdown': dd, 'alt': alt})
last = len(self.__altitudes) - 1
self.__extras = []
for i in range(len(self.__altitudes)):
if self.__altitudes[i]['alt'] is 0:
if 0 < i < last:
av = None
j = 1
while True:
if i - j < 0:
break
if self.__altitudes[i - j]['alt'] != 0:
av = j
break
j += 1
ap = None
j = 1
while True:
if i + j > len(self.__points) - 1:
break
if self.__altitudes[i + j]['alt'] != 0:
ap = j
break
j += 1
if av is not None and ap is not None:
prev_alt = self.__altitudes[i - av]['alt']
next_alt = self.__altitudes[i + ap]['alt']
prev_pt = self.__points[i - av]
next_pt = self.__points[i + ap]
pt = self.__points[i]
d0 = Finder.sqrDistForCoords(pt['x'], prev_pt['x'],
pt['y'], prev_pt['y'])
d1 = Finder.sqrDistForCoords(next_pt['x'], pt['x'],
next_pt['y'], pt['y'])
inter_alt = round(
old_div((d0 * next_alt + d1 * prev_alt),
(d0 + d1)), 3)
self.__altitudes[i]['alt'] = inter_alt
self.__altitudes[i]['drawdown'] = "interpolation"
elif i == 0 and len(self.__altitudes) > 2:
alt1 = self.__altitudes[1]['alt']
alt2 = self.__altitudes[2]['alt']
if alt1 != 0 and alt2 != 0:
pt2 = self.__points[2]
pt1 = self.__points[1]
pt = self.__points[0]
big_d = Finder.sqrDistForCoords(
pt2['x'], pt1['x'], pt2['y'], pt1['y'])
small_d = Finder.sqrDistForCoords(
pt1['x'], pt['x'], pt1['y'], pt['y'])
extra_alt = round(
alt2 + (1 + old_div(small_d, big_d)) *
(alt1 - alt2), 3)
if small_d < (old_div(big_d, 4)):
self.__altitudes[i]['alt'] = extra_alt
self.__altitudes[i]['drawdown'] = "extrapolation"
else:
self.__extras.append([i, extra_alt])
elif i == last and len(self.__altitudes) > 2:
alt1 = self.__altitudes[i - 1]['alt']
alt2 = self.__altitudes[i - 2]['alt']
if alt1 != 0 and alt2 != 0:
pt2 = self.__points[i - 2]
pt1 = self.__points[i - 1]
pt = self.__points[i]
big_d = Finder.sqrDistForCoords(
pt2['x'], pt1['x'], pt2['y'], pt1['y'])
small_d = Finder.sqrDistForCoords(
pt1['x'], pt['x'], pt1['y'], pt['y'])
extra_alt = round(
alt2 + (1 + old_div(small_d, big_d)) *
(alt1 - alt2), 3)
if small_d < (old_div(big_d, 4)):
self.__altitudes[i]['alt'] = extra_alt
self.__altitudes[i]['drawdown'] = "extrapolation"
else:
self.__extras.append([i, extra_alt])
if len(self.__extras) == 0:
self.__setAdjustements()
else:
self.__checkForceExtrapolation()
def test_resetSnappingIndex(self):
self.pointsLayer.setDependencies([])
self.linesLayer.setDependencies([])
self.pointsLayer2.setDependencies([])
ms = QgsMapSettings()
ms.setOutputSize(QSize(100, 100))
ms.setExtent(QgsRectangle(0, 0, 1, 1))
self.assertTrue(ms.hasValidSettings())
u = QgsSnappingUtils()
u.setMapSettings(ms)
u.setSnapToMapMode(QgsSnappingUtils.SnapAdvanced)
layers = [
QgsSnappingUtils.LayerConfig(self.pointsLayer,
QgsPointLocator.Vertex, 20,
QgsTolerance.Pixels)
]
u.setLayers(layers)
m = u.snapToMap(QPoint(95, 100))
self.assertTrue(m.isValid())
self.assertTrue(m.hasVertex())
self.assertEqual(m.point(), QgsPoint(1, 0))
f = QgsFeature(self.linesLayer.fields())
f.setFeatureId(1)
geom = QgsGeometry.fromWkt("LINESTRING(0 0,1 1)")
f.setGeometry(geom)
self.linesLayer.startEditing()
self.linesLayer.addFeatures([f])
self.linesLayer.commitChanges()
l1 = len([f for f in self.pointsLayer.getFeatures()])
self.assertEqual(l1, 4)
m = u.snapToMap(QPoint(95, 0))
# snapping not updated
self.pointsLayer.setDependencies([])
self.assertEqual(m.isValid(), False)
# set layer dependencies
self.pointsLayer.setDependencies(
[QgsMapLayerDependency(self.linesLayer.id())])
# add another line
f = QgsFeature(self.linesLayer.fields())
f.setFeatureId(2)
geom = QgsGeometry.fromWkt("LINESTRING(0 0,0.5 0.5)")
f.setGeometry(geom)
self.linesLayer.startEditing()
self.linesLayer.addFeatures([f])
self.linesLayer.commitChanges()
# check the snapped point is ok
m = u.snapToMap(QPoint(45, 50))
self.assertTrue(m.isValid())
self.assertTrue(m.hasVertex())
self.assertEqual(m.point(), QgsPoint(0.5, 0.5))
self.pointsLayer.setDependencies([])
# test chained layer dependencies A -> B -> C
layers = [
QgsSnappingUtils.LayerConfig(self.pointsLayer,
QgsPointLocator.Vertex, 20,
QgsTolerance.Pixels),
QgsSnappingUtils.LayerConfig(self.pointsLayer2,
QgsPointLocator.Vertex, 20,
QgsTolerance.Pixels)
]
u.setLayers(layers)
self.pointsLayer.setDependencies(
[QgsMapLayerDependency(self.linesLayer.id())])
self.pointsLayer2.setDependencies(
[QgsMapLayerDependency(self.pointsLayer.id())])
# add another line
f = QgsFeature(self.linesLayer.fields())
f.setFeatureId(3)
geom = QgsGeometry.fromWkt("LINESTRING(0 0.2,0.5 0.8)")
f.setGeometry(geom)
self.linesLayer.startEditing()
self.linesLayer.addFeatures([f])
self.linesLayer.commitChanges()
# check the second snapped point is ok
m = u.snapToMap(QPoint(75, 100 - 80))
self.assertTrue(m.isValid())
self.assertTrue(m.hasVertex())
self.assertEqual(m.point(), QgsPoint(0.7, 0.8))
self.pointsLayer.setDependencies([])
self.pointsLayer2.setDependencies([])