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qad_lengthen_maptool.py
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qad_lengthen_maptool.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
QAD Quantum Aided Design plugin
classe per gestire il map tool in ambito del comando lengthen
-------------------
begin : 2015-10-06
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_lengthen_maptool_ModeEnum class.
#===============================================================================
class Qad_lengthen_maptool_ModeEnum():
# si richiede la selezione dell'oggetto da misurare
ASK_FOR_OBJ_TO_MISURE = 1
# si richiede il delta
ASK_FOR_DELTA = 2
# non si richiede niente
NONE = 3
# si richiede la selezione dell'oggetto da allungare
ASK_FOR_OBJ_TO_LENGTHEN = 4
# si richiede la percentuale
ASK_FOR_PERCENT = 5
# si richiede il totale
ASK_FOR_TOTAL = 6
# si richiede il nuovo punto dell'estremità in modalità dinamica
ASK_FOR_DYNAMIC_POINT = 7
#===============================================================================
# Qad_lengthen_maptool class
#===============================================================================
class Qad_lengthen_maptool(QadGetPoint):
def __init__(self, plugIn):
QadGetPoint.__init__(self, plugIn)
self.OpMode = None # "DElta" o "Percent" o "Total" o "DYnamic"
self.OpType = None # "length" o "Angle"
self.value = None
self.tmpLinearObjectList = 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 setInfo(self, entity, point):
# setta: self.layer, self.tmpLinearObjectList e self.move_startPt
if self.tmpLinearObjectList is not None:
del self.tmpLinearObjectList
self.tmpLinearObjectList = None
if entity.isInitialized() == False:
return False
self.layer = entity.layer
transformedPt = self.canvas.mapRenderer().mapToLayerCoordinates(self.layer, point)
geom = entity.getGeometry()
# ritorna una tupla (<The squared cartesian distance>,
# <minDistPoint>
# <afterVertex>
# <leftOf>)
dummy = qad_utils.closestSegmentWithContext(transformedPt, geom)
if dummy[2] is None:
return False
# ritorna la sotto-geometria al vertice <atVertex> e la sua posizione nella geometria (0-based)
subGeom, atSubGeom = qad_utils.getSubGeomAtVertex(geom, dummy[2])
self.tmpLinearObjectList = qad_utils.QadLinearObjectList()
self.tmpLinearObjectList.fromPolyline(subGeom.asPolyline())
if qad_utils.getDistance(self.tmpLinearObjectList.getStartPt(), transformedPt) <= \
qad_utils.getDistance(self.tmpLinearObjectList.getEndPt(), transformedPt):
# si allunga/accorcia dal punto iniziale
self.move_startPt = True
else:
# si allunga dal punto finale
self.move_startPt = False
return True
def canvasMoveEvent(self, event):
QadGetPoint.canvasMoveEvent(self, event)
self.__rubberBand.reset()
res = False
# si richiede la selezione dell'oggetto da allungare
if self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_OBJ_TO_LENGTHEN:
if self.tmpEntity.isInitialized():
if self.setInfo(self.tmpEntity, self.tmpPoint) == False:
return
if self.OpMode == "DElta":
newTmpLinearObjectList = qad_utils.QadLinearObjectList(self.tmpLinearObjectList)
if self.OpType == "length":
res = newTmpLinearObjectList.lengthen_delta(self.move_startPt, self.value)
elif self.OpType == "Angle":
res = newTmpLinearObjectList.lengthen_deltaAngle(self.move_startPt, self.value)
elif self.OpMode == "Percent":
newTmpLinearObjectList = qad_utils.QadLinearObjectList(self.tmpLinearObjectList)
value = newTmpLinearObjectList.length() * self.value / 100
value = value - newTmpLinearObjectList.length()
res = newTmpLinearObjectList.lengthen_delta(self.move_startPt, value)
elif self.OpMode == "Total":
newTmpLinearObjectList = qad_utils.QadLinearObjectList(self.tmpLinearObjectList)
if self.OpType == "length":
value = self.value - self.tmpLinearObjectList.length()
res = newTmpLinearObjectList.lengthen_delta(self.move_startPt, value)
elif self.OpType == "Angle":
if newTmpLinearObjectList.qty() == 1:
linearObject = newTmpLinearObjectList.getLinearObjectAt(0)
if linearObject.isArc() == True: # se è un arco
value = self.value - linearObject.getArc().totalAngle()
res = newTmpLinearObjectList.lengthen_deltaAngle(self.move_startPt, value)
# si richiede un punto per la nuova estremità
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_DYNAMIC_POINT:
newTmpLinearObjectList = qad_utils.QadLinearObjectList(self.tmpLinearObjectList)
transformedPt = self.canvas.mapRenderer().mapToLayerCoordinates(self.layer, self.tmpPoint)
if self.move_startPt:
linearObject = newTmpLinearObjectList.getLinearObjectAt(0)
else:
linearObject = newTmpLinearObjectList.getLinearObjectAt(-1)
if linearObject.isSegment():
newPt = qad_utils.getPerpendicularPointOnInfinityLine(linearObject.getStartPt(), linearObject.getEndPt(), transformedPt)
else: # arco
newPt = qad_utils.getPolarPointByPtAngle(linearObject.getArc().center, \
qad_utils.getAngleBy2Pts(linearObject.getArc().center, transformedPt), \
linearObject.getArc().radius)
if newTmpLinearObjectList.qty() > 1 and linearObject.isSegment():
ang = linearObject.getTanDirectionOnStartPt()
if self.move_startPt:
linearObject.setStartPt(newPt)
else:
linearObject.setEndPt(newPt)
if newTmpLinearObjectList.qty() > 1 and linearObject.isSegment() and \
qad_utils.TanDirectionNear(ang, linearObject.getTanDirectionOnStartPt()) == False:
res = False
else:
res = True
if res == False: # allungamento impossibile
return
pts = newTmpLinearObjectList.asPolyline()
geom = QgsGeometry.fromPolyline(pts)
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 dell'oggetto da misurare
if self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_OBJ_TO_MISURE:
self.setSelectionMode(QadGetPointSelectionModeEnum.ENTITY_SELECTION)
# solo layer di tipo lineari che non appartengano a quote o di tipo poligono
layerList = []
for layer in self.plugIn.canvas.layers():
if layer.type() == QgsMapLayer.VectorLayer and \
layer.geometryType() == QGis.Line or layer.geometryType() == QGis.Polygon:
if len(QadDimStyles.getDimListByLayer(layer)) == 0:
layerList.append(layer)
self.layersToCheck = layerList
self.onlyEditableLayers = False
self.setSnapType(QadSnapTypeEnum.DISABLE)
# si richiede il delta
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_DELTA:
self.OpMode = "DElta"
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
# non si richiede niente
elif self.mode == Qad_lengthen_maptool_ModeEnum.NONE:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
# si richiede la selezione dell'oggetto da allungare
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_OBJ_TO_LENGTHEN:
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.onlyEditableLayers = True
self.setSnapType(QadSnapTypeEnum.DISABLE)
# si richiede la percentuale
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_PERCENT:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.OpMode = "Percent"
# si richiede il totale
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_TOTAL:
self.OpMode = "Total"
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
# si richiede il nuovo punto dell'estremità in modalità dinamica
elif self.mode == Qad_lengthen_maptool_ModeEnum.ASK_FOR_DYNAMIC_POINT:
self.OpMode = "DYnamic"
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)