本文整理汇总了Python中qgis.gui.QgsRubberBand.getPoint方法的典型用法代码示例。如果您正苦于以下问题：Python QgsRubberBand.getPoint方法的具体用法？Python QgsRubberBand.getPoint怎么用？Python QgsRubberBand.getPoint使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.gui.QgsRubberBand的用法示例。
在下文中一共展示了QgsRubberBand.getPoint方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: LineMapTool
# 需要导入模块: from qgis.gui import QgsRubberBand [as 别名]
# 或者: from qgis.gui.QgsRubberBand import getPoint [as 别名]
#.........这里部分代码省略.........
# Check tracing
if self.started:
# Only if the ctrl key is pressed
if self.mCtrl == True:
# So if we have found a snapping
if result <> []:
# If it is a vertex, not a point on a segment
if result[0].snappedVertexNr <> -1:
self.rubberBand.movePoint(point)
self.appendPoint(point)
self.lastPointMustStay = True
# The next point found, may be on a segment
self.firstTimeOnSegment = True
# We are on a segment
else:
self.rubberBand.movePoint(point)
# If we are on a new segment, we add the point in any case
if self.firstTimeOnSegment:
self.appendPoint(point)
self.lastPointMustStay = True
self.firstTimeOnSegment = False
# if we are not on a new segment, we have to test, if this point is really needed
else:
# but only if we have already enough points
if self.rubberBand.numberOfVertices() >=3:
num_vertexs = self.rubberBand.numberOfVertices()
lastRbP = self.rubberBand.getPoint(0, num_vertexs-2)
nextToLastRbP = self.rubberBand.getPoint(0, num_vertexs-3)
if not self.pointOnLine(lastRbP, nextToLastRbP, QgsPoint(point)):
self.appendPoint(point)
self.lastPointMustStay = False
else:
if not self.lastPointMustStay:
self.rubberBand.removeLastPoint()
self.rubberBand.movePoint(point)
else:
self.appendPoint(point)
self.lastPointMustStay = False
self.firstTimeOnSegment = False
else:
#if nothing specials happens, just update the rubberband to the cursor position
point = QgsMapToPixel.toMapCoordinates(self.canvas.getCoordinateTransform (), x, y)
self.rubberBand.movePoint(point)
else:
''' In "not-tracing" state, just update the rubberband to the cursor position
but we have still to snap to act like the "normal" digitize tool '''
if result <> []:
point = QgsPoint(result[0].snappedVertex)
# Add marker
self.vertexMarker.setCenter(point)
self.vertexMarker.show()
else:
point = QgsMapToPixel.toMapCoordinates(self.canvas.getCoordinateTransform(), x, y)
self.rubberBand.movePoint(point) 示例2: ApisMapToolEmitPolygonAndPoint
# 需要导入模块: from qgis.gui import QgsRubberBand [as 别名]
# 或者: from qgis.gui.QgsRubberBand import getPoint [as 别名]
class ApisMapToolEmitPolygonAndPoint(QgsMapTool, ApisMapToolMixin):
mappingFinished = pyqtSignal(QgsGeometry, QgsGeometry, QgsCoordinateReferenceSystem)
def __init__(self, canvas):
QgsMapTool.__init__(self, canvas)
self.canvas = canvas
self.rubberBand = None
self.tempRubberBand = None
self.vertexMarker = None
self.capturedPoints = []
self.derivedPoint = None
self.capturing = False
self.setCursor(Qt.CrossCursor)
def canvasReleaseEvent(self, event):
if event.button() == Qt.LeftButton:
if not self.capturing:
self.startCapturing()
self.addVertex(event.pos())
elif event.button() == Qt.RightButton:
point = self.getDerivedPoint()
polygon = self.getCapturedPolygon()
self.stopCapturing()
if point != None and polygon != None:
pointGeom = self.getPointGeometry(point)
polygonGeom = self.getPolygonGeometry(polygon)
if pointGeom != None and polygonGeom != None:
self.mappingFinished.emit(pointGeom, polygonGeom, self.canvas.mapSettings().destinationCrs())
else:
self.clearScene()
else:
self.clearScene()
def canvasMoveEvent(self, event):
if self.tempRubberBand != None and self.capturing:
mapPt = self.transformCoordinates(event.pos())
self.tempRubberBand.movePoint(mapPt)
def keyPressEvent(self, event):
if event.key() == Qt.Key_Backspace or event.key() == Qt.Key_Delete:
self.removeLastVertex()
event.ignore()
if event.key() == Qt.Key_Escape:
self.stopCapturing()
self.clearScene()
if event.key() == Qt.Key_Return or event.key() == Qt.Key_Enter:
point = self.getDerivedPoint()
polygon = self.getCapturedPolygon()
self.stopCapturing()
if point != None and polygon != None:
pointGeom = self.getPointGeometry(point)
polygonGeom = self.getPolygonGeometry(polygon)
if pointGeom != None and polygonGeom != None:
self.mappingFinished.emit(pointGeom, polygonGeom, self.canvas.mapSettings().destinationCrs())
else:
self.clearScene()
else:
self.clearScene()
def startCapturing(self):
self.clearScene()
self.rubberBand = QgsRubberBand(self.canvas, QGis.Polygon)
self.rubberBand.setWidth(2)
self.rubberBand.setFillColor(QColor(220, 0, 0, 120))
self.rubberBand.setBorderColor(QColor(220, 0, 0))
self.rubberBand.setLineStyle(Qt.DotLine)
self.rubberBand.show()
self.tempRubberBand = QgsRubberBand(self.canvas, QGis.Polygon)
self.tempRubberBand.setWidth(2)
self.tempRubberBand.setFillColor(QColor(0, 0, 0, 0))
self.tempRubberBand.setBorderColor(QColor(220, 0, 0))
self.tempRubberBand.setLineStyle(Qt.DotLine)
self.tempRubberBand.show()
self.vertexMarker = QgsVertexMarker(self.canvas)
self.vertexMarker.setIconType(1)
self.vertexMarker.setColor(QColor(220, 0, 0))
self.vertexMarker.setIconSize(16)
self.vertexMarker.setPenWidth(3)
self.vertexMarker.show()
self.capturing = True
def clearScene(self):
if self.vertexMarker:
self.canvas.scene().removeItem(self.vertexMarker)
self.vertexMarker = None
if self.rubberBand:
self.canvas.scene().removeItem(self.rubberBand)
self.rubberBand = None
if self.tempRubberBand:
self.canvas.scene().removeItem(self.tempRubberBand)
self.tempRubberBand = None
def stopCapturing(self):
if self.vertexMarker and self.rubberBand and self.rubberBand.numberOfVertices() < 3:
#.........这里部分代码省略.........