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qad_fillet_maptool.py
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qad_fillet_maptool.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
QAD Quantum Aided Design plugin
classe per gestire il map tool in ambito del comando fillet
-------------------
begin : 2014-01-31
copyright : iiiii
email : hhhhh
developers : bbbbb aaaaa ggggg
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from qgis.gui import *
import math
import qad_utils
from qad_snapper import *
from qad_variables import *
from qad_getpoint import *
from qad_rubberband import QadRubberBand
from qad_dim import QadDimStyles
#===============================================================================
# Qad_fillet_maptool_ModeEnum class.
#===============================================================================
class Qad_fillet_maptool_ModeEnum():
# si richiede la selezione del primo oggetto
ASK_FOR_FIRST_LINESTRING = 1
# si richiede la selezione del secondo oggetto
ASK_FOR_SECOND_LINESTRING = 2
# non si richiede niente
NONE = 3
# si richiede la selezione della polilinea
ASK_FOR_POLYLINE = 4
#===============================================================================
# Qad_fillet_maptool class
#===============================================================================
class Qad_fillet_maptool(QadGetPoint):
def __init__(self, plugIn):
QadGetPoint.__init__(self, plugIn)
self.filletMode = 1 # modalità di raccordo; 1=Taglia-estendi, 2=Non taglia-estendi
self.radius = 0.0
self.layer = None
self.linearObjectList = qad_utils.QadLinearObjectList()
self.partAt1 = 0
self.vertexAt1 = 0
self.tolerance2ApproxCurve = None
self.__rubberBand = QadRubberBand(self.canvas)
def hidePointMapToolMarkers(self):
QadGetPoint.hidePointMapToolMarkers(self)
self.__rubberBand.hide()
def showPointMapToolMarkers(self):
QadGetPoint.showPointMapToolMarkers(self)
self.__rubberBand.show()
def clear(self):
QadGetPoint.clear(self)
self.__rubberBand.reset()
self.mode = None
def setEntityInfo(self, layer, featureId, linearObjectList, partAt, pointAt):
"""
Setta self.entity, self.atSubGeom, self.linearObjectList, self.partAt, self.pointAt
di primo o del secondo oggetto da raccordare (vedi <firstObj>)
"""
self.layer = layer
self.featureId = featureId
self.linearObjectList.set(linearObjectList)
self.partAt = partAt
self.pointAt = pointAt
self.tolerance2ApproxCurve = QadVariables.get(QadMsg.translate("Environment variables", "TOLERANCE2APPROXCURVE"))
def canvasMoveEvent(self, event):
QadGetPoint.canvasMoveEvent(self, event)
self.__rubberBand.reset()
tmpLinearObjectList = None
# si richiede la selezione del secondo oggetto
if self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_SECOND_LINESTRING:
if self.tmpEntity.isInitialized():
# trasformo la geometria nel crs del canvas per lavorare con coordinate piane xy
geom = self.layerToMapCoordinates(self.tmpEntity.layer, self.tmpEntity.getGeometry())
# ritorna una tupla (<The squared cartesian distance>,
# <minDistPoint>
# <afterVertex>
# <leftOf>)
dummy = qad_utils.closestSegmentWithContext(self.tmpPoint, geom)
if dummy[2] is not None:
# ritorna la sotto-geometria al vertice <atVertex> e la sua posizione nella geometria (0-based)
subGeom, atSubGeom = qad_utils.getSubGeomAtVertex(geom, dummy[2])
tmpLinearObjectList = qad_utils.QadLinearObjectList()
tmpLinearObjectList.fromPolyline(subGeom.asPolyline())
# la funzione ritorna una lista con (<minima distanza al quadrato>,
# <punto più vicino>
# <indice della parte più vicina>
# <"a sinistra di">)
dummy = tmpLinearObjectList.closestPartWithContext(self.tmpPoint)
tmpPartAt = dummy[2]
tmpPointAt = dummy[1]
# stessa entità e stessa parte
if self.layer.id() == self.tmpEntity.layer.id() and \
self.featureId == self.tmpEntity.featureId and \
self.partAt == tmpPartAt:
return
# uso il crs del canvas per lavorare con coordinate piane xy
epsg = self.canvas.mapRenderer().destinationCrs().authid()
if self.tmpShiftKey == True: # tasto shift premuto durante il movimento del mouse
# filletMode = 1 # modalità di raccordo; 1=Taglia-estendi
# raggio = 0
res = qad_utils.getFilletLinearObjectList(self.linearObjectList, self.partAt, self.pointAt, \
tmpLinearObjectList, tmpPartAt, tmpPointAt,\
1, 0, epsg)
else:
res = qad_utils.getFilletLinearObjectList(self.linearObjectList, self.partAt, self.pointAt, \
tmpLinearObjectList, tmpPartAt, tmpPointAt,\
self.filletMode, self.radius, epsg)
if res is None: # raccordo non possibile
return
tmpLinearObjectList = res[0]
# si richiede la selezione della polilinea
elif self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_POLYLINE:
if self.tmpEntity.isInitialized():
# trasformo la geometria nel crs del canvas per lavorare con coordinate piane xy
geom = self.layerToMapCoordinates(self.tmpEntity.layer, self.tmpEntity.getGeometry())
# ritorna una tupla (<The squared cartesian distance>,
# <minDistPoint>
# <afterVertex>
# <leftOf>)
dummy = qad_utils.closestSegmentWithContext(self.tmpPoint, geom)
if dummy[2] is not None:
# ritorna la sotto-geometria al vertice <atVertex> e la sua posizione nella geometria (0-based)
subGeom, atSubGeom = qad_utils.getSubGeomAtVertex(geom, dummy[2])
tmpLinearObjectList = qad_utils.QadLinearObjectList()
tmpLinearObjectList.fromPolyline(subGeom.asPolyline())
tmpLinearObjectList.fillet(self.radius)
if tmpLinearObjectList is not None:
pts = tmpLinearObjectList.asPolyline(self.tolerance2ApproxCurve)
if self.layer.geometryType() == QGis.Polygon:
geom = QgsGeometry.fromPolygon([pts])
else:
geom = QgsGeometry.fromPolyline(pts)
# trasformo la geometria nel crs del canvas per lavorare con coordinate piane xy
geom = self.layerToMapCoordinates(self.layer, geom)
self.__rubberBand.addGeometry(geom, self.layer)
def activate(self):
QadGetPoint.activate(self)
self.__rubberBand.show()
def deactivate(self):
try: # necessario perché se si chiude QGIS parte questo evento nonostante non ci sia più l'oggetto maptool !
QadGetPoint.deactivate(self)
self.__rubberBand.hide()
except:
pass
def setMode(self, mode):
self.mode = mode
# si richiede la selezione del primo oggetto
# si richiede la selezione del secondo oggetto
if self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_FIRST_LINESTRING or \
self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_SECOND_LINESTRING:
if self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_FIRST_LINESTRING:
self.setSelectionMode(QadGetPointSelectionModeEnum.ENTITY_SELECTION)
else:
self.setSelectionMode(QadGetPointSelectionModeEnum.ENTITY_SELECTION_DYNAMIC)
# solo layer lineari editabili che non appartengano a quote
layerList = []
for layer in self.plugIn.canvas.layers():
if layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() == QGis.Line and layer.isEditable():
if len(QadDimStyles.getDimListByLayer(layer)) == 0:
layerList.append(layer)
self.layersToCheck = layerList
self.setSnapType(QadSnapTypeEnum.DISABLE)
# non si richiede niente
elif self.mode == Qad_fillet_maptool_ModeEnum.NONE:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.setDrawMode(QadGetPointDrawModeEnum.NONE)
# si richiede la selezione della polilinea
elif self.mode == Qad_fillet_maptool_ModeEnum.ASK_FOR_POLYLINE:
self.setSelectionMode(QadGetPointSelectionModeEnum.ENTITY_SELECTION_DYNAMIC)
# solo layer lineari o poligono editabili che non appartengano a quote
layerList = []
for layer in self.plugIn.canvas.layers():
if layer.type() == QgsMapLayer.VectorLayer and \
(layer.geometryType() == QGis.Line or layer.geometryType() == QGis.Polygon) and \
layer.isEditable():
if len(QadDimStyles.getDimListByLayer(layer)) == 0:
layerList.append(layer)
self.layersToCheck = layerList
self.setSnapType(QadSnapTypeEnum.DISABLE)