forked from geosim/QAD
/
qad_offset_maptool.py
190 lines (161 loc) · 8.23 KB
/
qad_offset_maptool.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
# -*- coding: utf-8 -*-
"""
/***************************************************************************
QAD Quantum Aided Design plugin
classe per gestire il map tool in ambito del comando offset
-------------------
begin : 2013-10-04
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_snappointsdisplaymanager import *
from qad_variables import *
from qad_getpoint import *
from qad_highlight import QadHighlight
from qad_dim import QadDimStyles
from qad_msg import QadMsg
#===============================================================================
# Qad_offset_maptool_ModeEnum class.
#===============================================================================
class Qad_offset_maptool_ModeEnum():
# si richiede il primo punto per calcolo offset
ASK_FOR_FIRST_OFFSET_PT = 1
# noto il primo punto per calcolo offset si richiede il secondo punto
FIRST_OFFSET_PT_KNOWN_ASK_FOR_SECOND_PT = 2
# nota la distanza di offset si richiede il punto per stabilire da che parte
OFFSET_KNOWN_ASK_FOR_SIDE_PT = 3
# si richiede il punto di passaggio per stabilire da che parte e a quale offset
ASK_FOR_PASSAGE_PT = 4
# si richiede la selezione di un oggetto
ASK_FOR_ENTITY_SELECTION = 5
#===============================================================================
# Qad_offset_maptool class
#===============================================================================
class Qad_offset_maptool(QadGetPoint):
def __init__(self, plugIn):
QadGetPoint.__init__(self, plugIn)
self.firstPt = None
self.layer = None
self.subGeom = None
self.offSet = 0
self.lastOffSetOnLeftSide = 0
self.lastOffSetOnRightSide = 0
self.gapType = 0
self.__highlight = QadHighlight(self.canvas)
def hidePointMapToolMarkers(self):
QadGetPoint.hidePointMapToolMarkers(self)
self.__highlight.hide()
def showPointMapToolMarkers(self):
QadGetPoint.showPointMapToolMarkers(self)
self.__highlight.show()
def clear(self):
QadGetPoint.clear(self)
self.__highlight.reset()
self.mode = None
def addOffSetGeometries(self, newPt):
self.__highlight.reset()
# ritorna una tupla (<The squared cartesian distance>,
# <minDistPoint>
# <afterVertex>
# <leftOf>)
dummy = qad_utils.closestSegmentWithContext(newPt, self.subGeom)
if self.offSet < 0:
afterVertex = dummy[2]
pt = qad_utils.getPerpendicularPointOnInfinityLine(self.subGeom.vertexAt(afterVertex - 1), \
self.subGeom.vertexAt(afterVertex), \
newPt)
offSetDistance = qad_utils.getDistance(newPt, pt)
else:
offSetDistance = self.offSet
if dummy[3] < 0: # alla sinistra
offSetDistance = offSetDistance + self.lastOffSetOnLeftSide
else: # alla destra
offSetDistance = offSetDistance + self.lastOffSetOnRightSide
tolerance2ApproxCurve = QadVariables.get(QadMsg.translate("Environment variables", "TOLERANCE2APPROXCURVE"))
# uso il crs del canvas per lavorare con coordinate piane xy
epsg = self.canvas.mapRenderer().destinationCrs().authid()
lines = qad_utils.offSetPolyline(self.subGeom.asPolyline(), epsg, \
offSetDistance, \
"left" if dummy[3] < 0 else "right", \
self.gapType, \
tolerance2ApproxCurve)
for line in lines:
if self.layer.geometryType() == QGis.Polygon:
if line[0] == line[-1]: # se é una linea chiusa
offsetGeom = QgsGeometry.fromPolygon([line])
else:
offsetGeom = QgsGeometry.fromPolyline(line)
else:
offsetGeom = QgsGeometry.fromPolyline(line)
self.__highlight.addGeometry(self.mapToLayerCoordinates(self.layer, offsetGeom), self.layer)
def canvasMoveEvent(self, event):
QadGetPoint.canvasMoveEvent(self, event)
# nota la distanza di offset si richiede il punto per stabilire da che parte
if self.mode == Qad_offset_maptool_ModeEnum.OFFSET_KNOWN_ASK_FOR_SIDE_PT:
self.addOffSetGeometries(self.tmpPoint)
# si richiede il punto di passaggio per stabilire da che parte e a quale offset
elif self.mode == Qad_offset_maptool_ModeEnum.ASK_FOR_PASSAGE_PT:
self.addOffSetGeometries(self.tmpPoint)
def activate(self):
QadGetPoint.activate(self)
self.__highlight.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.__highlight.hide()
except:
pass
def setMode(self, mode):
self.clear()
self.mode = mode
# si richiede il primo punto per calcolo offset
if self.mode == Qad_offset_maptool_ModeEnum.ASK_FOR_FIRST_OFFSET_PT:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.setDrawMode(QadGetPointDrawModeEnum.NONE)
self.onlyEditableLayers = False
# noto il primo punto per calcolo offset si richiede il secondo punto
if self.mode == Qad_offset_maptool_ModeEnum.FIRST_OFFSET_PT_KNOWN_ASK_FOR_SECOND_PT:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.setDrawMode(QadGetPointDrawModeEnum.ELASTIC_LINE)
self.setStartPoint(self.firstPt)
self.onlyEditableLayers = False
# nota la distanza di offset si richiede il punto per stabilire da che parte
elif self.mode == Qad_offset_maptool_ModeEnum.OFFSET_KNOWN_ASK_FOR_SIDE_PT:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.setDrawMode(QadGetPointDrawModeEnum.NONE)
self.onlyEditableLayers = False
# si richiede il punto di passaggio per stabilire da che parte e a quale offset
elif self.mode == Qad_offset_maptool_ModeEnum.ASK_FOR_PASSAGE_PT:
self.setSelectionMode(QadGetPointSelectionModeEnum.POINT_SELECTION)
self.setDrawMode(QadGetPointDrawModeEnum.NONE)
self.onlyEditableLayers = False
# si richiede la selezione di un oggetto
elif self.mode == Qad_offset_maptool_ModeEnum.ASK_FOR_ENTITY_SELECTION:
self.setSelectionMode(QadGetPointSelectionModeEnum.ENTITY_SELECTION)
# solo layer lineari o poligono editabili che non appartengano a quote
layerList = []
for layer in qad_utils.getVisibleVectorLayers(self.plugIn.canvas): # Tutti i layer vettoriali visibili
if (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.setDrawMode(QadGetPointDrawModeEnum.NONE)
self.onlyEditableLayers = True