mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-02 00:02:12 -05:00
289 lines
12 KiB
Python
289 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
RectanglesOvalsDiamondsVariable.py
|
|
---------------------
|
|
Date : April 2016
|
|
Copyright : (C) 2016 by Alexander Bruy
|
|
Email : alexander dot bruy at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* 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 builtins import range
|
|
|
|
__author__ = 'Alexander Bruy'
|
|
__date__ = 'August 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive323
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import math
|
|
|
|
from qgis.core import (QgsApplication,
|
|
QgsWkbTypes,
|
|
QgsFeature,
|
|
QgsGeometry,
|
|
QgsPointXY,
|
|
QgsMessageLog,
|
|
QgsProcessingUtils)
|
|
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
from processing.core.parameters import ParameterVector
|
|
from processing.core.parameters import ParameterSelection
|
|
from processing.core.parameters import ParameterTableField
|
|
from processing.core.parameters import ParameterNumber
|
|
from processing.core.outputs import OutputVector
|
|
from processing.tools import dataobjects
|
|
|
|
|
|
class RectanglesOvalsDiamondsVariable(QgisAlgorithm):
|
|
|
|
INPUT_LAYER = 'INPUT_LAYER'
|
|
SHAPE = 'SHAPE'
|
|
WIDTH = 'WIDTH'
|
|
HEIGHT = 'HEIGHT'
|
|
ROTATION = 'ROTATION'
|
|
SEGMENTS = 'SEGMENTS'
|
|
OUTPUT_LAYER = 'OUTPUT_LAYER'
|
|
|
|
def icon(self):
|
|
return QgsApplication.getThemeIcon("/providerQgis.svg")
|
|
|
|
def svgIconPath(self):
|
|
return QgsApplication.iconPath("providerQgis.svg")
|
|
|
|
def group(self):
|
|
return self.tr('Vector geometry tools')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.shapes = [self.tr('Rectangles'), self.tr('Diamonds'), self.tr('Ovals')]
|
|
|
|
self.addParameter(ParameterVector(self.INPUT_LAYER,
|
|
self.tr('Input layer'),
|
|
[dataobjects.TYPE_VECTOR_POINT]))
|
|
self.addParameter(ParameterSelection(self.SHAPE,
|
|
self.tr('Buffer shape'), self.shapes))
|
|
self.addParameter(ParameterTableField(self.WIDTH,
|
|
self.tr('Width field'),
|
|
self.INPUT_LAYER,
|
|
ParameterTableField.DATA_TYPE_NUMBER))
|
|
self.addParameter(ParameterTableField(self.HEIGHT,
|
|
self.tr('Height field'),
|
|
self.INPUT_LAYER,
|
|
ParameterTableField.DATA_TYPE_NUMBER))
|
|
self.addParameter(ParameterTableField(self.ROTATION,
|
|
self.tr('Rotation field'),
|
|
self.INPUT_LAYER,
|
|
ParameterTableField.DATA_TYPE_NUMBER,
|
|
True))
|
|
self.addParameter(ParameterNumber(self.SEGMENTS,
|
|
self.tr('Number of segments'),
|
|
1,
|
|
999999999,
|
|
36))
|
|
|
|
self.addOutput(OutputVector(self.OUTPUT_LAYER,
|
|
self.tr('Output'),
|
|
datatype=[dataobjects.TYPE_VECTOR_POLYGON]))
|
|
|
|
def name(self):
|
|
return 'rectanglesovalsdiamondsvariable'
|
|
|
|
def displayName(self):
|
|
return self.tr('Rectangles, ovals, diamonds (variable)')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
layer = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT_LAYER), context)
|
|
shape = self.getParameterValue(self.SHAPE)
|
|
width = self.getParameterValue(self.WIDTH)
|
|
height = self.getParameterValue(self.HEIGHT)
|
|
rotation = self.getParameterValue(self.ROTATION)
|
|
segments = self.getParameterValue(self.SEGMENTS)
|
|
|
|
writer = self.getOutputFromName(
|
|
self.OUTPUT_LAYER).getVectorWriter(layer.fields(), QgsWkbTypes.Polygon, layer.crs(), context)
|
|
|
|
features = QgsProcessingUtils.getFeatures(layer, context)
|
|
|
|
if shape == 0:
|
|
self.rectangles(writer, features, width, height, rotation)
|
|
elif shape == 1:
|
|
self.diamonds(writer, features, width, height, rotation)
|
|
else:
|
|
self.ovals(writer, features, width, height, rotation, segments)
|
|
|
|
del writer
|
|
|
|
def rectangles(self, writer, features, width, height, rotation):
|
|
ft = QgsFeature()
|
|
|
|
if rotation is not None:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
angle = feat[rotation]
|
|
if not w or not h or not angle:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width, height or angle. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
phi = angle * math.pi / 180
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = [(-xOffset, -yOffset), (-xOffset, yOffset), (xOffset, yOffset), (xOffset, -yOffset)]
|
|
polygon = [[QgsPointXY(i[0] * math.cos(phi) + i[1] * math.sin(phi) + x,
|
|
-i[0] * math.sin(phi) + i[1] * math.cos(phi) + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|
|
else:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
if not w or not h:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width or height. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = [(-xOffset, -yOffset), (-xOffset, yOffset), (xOffset, yOffset), (xOffset, -yOffset)]
|
|
polygon = [[QgsPointXY(i[0] + x, i[1] + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|
|
|
|
def diamonds(self, writer, features, width, height, rotation):
|
|
ft = QgsFeature()
|
|
|
|
if rotation is not None:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
angle = feat[rotation]
|
|
if not w or not h or not angle:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width, height or angle. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
phi = angle * math.pi / 180
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = [(0.0, -yOffset), (-xOffset, 0.0), (0.0, yOffset), (xOffset, 0.0)]
|
|
polygon = [[QgsPointXY(i[0] * math.cos(phi) + i[1] * math.sin(phi) + x,
|
|
-i[0] * math.sin(phi) + i[1] * math.cos(phi) + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|
|
else:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
if not w or not h:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width or height. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = [(0.0, -yOffset), (-xOffset, 0.0), (0.0, yOffset), (xOffset, 0.0)]
|
|
polygon = [[QgsPointXY(i[0] + x, i[1] + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|
|
|
|
def ovals(self, writer, features, width, height, rotation, segments):
|
|
ft = QgsFeature()
|
|
|
|
if rotation is not None:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
angle = feat[rotation]
|
|
if not w or not h or not angle:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width, height or angle. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
phi = angle * math.pi / 180
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = []
|
|
for t in [(2 * math.pi) / segments * i for i in range(segments)]:
|
|
points.append((xOffset * math.cos(t), yOffset * math.sin(t)))
|
|
polygon = [[QgsPointXY(i[0] * math.cos(phi) + i[1] * math.sin(phi) + x,
|
|
-i[0] * math.sin(phi) + i[1] * math.cos(phi) + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|
|
else:
|
|
for current, feat in enumerate(features):
|
|
w = feat[width]
|
|
h = feat[height]
|
|
if not w or not h:
|
|
QgsMessageLog.logMessage(self.tr('Feature {} has empty '
|
|
'width or height. '
|
|
'Skipping...'.format(feat.id())),
|
|
self.tr('Processing'), QgsMessageLog.WARNING)
|
|
continue
|
|
|
|
xOffset = w / 2.0
|
|
yOffset = h / 2.0
|
|
|
|
point = feat.geometry().asPoint()
|
|
x = point.x()
|
|
y = point.y()
|
|
points = []
|
|
for t in [(2 * math.pi) / segments * i for i in range(segments)]:
|
|
points.append((xOffset * math.cos(t), yOffset * math.sin(t)))
|
|
polygon = [[QgsPointXY(i[0] + x, i[1] + y) for i in points]]
|
|
|
|
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
|
|
ft.setAttributes(feat.attributes())
|
|
writer.addFeature(ft)
|