mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-04 00:30:59 -05:00
b1cadb1822
have specific icons, instead of generic qgis icon We consider these 'top level' algorithms, and using the standard algorithm icon should help reflect this and differentiate them from 3rd party algorithms.
284 lines
12 KiB
Python
284 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,
|
|
QgsFeatureSink,
|
|
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 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, QgsFeatureSink.FastInsert)
|
|
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, QgsFeatureSink.FastInsert)
|
|
|
|
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, QgsFeatureSink.FastInsert)
|
|
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, QgsFeatureSink.FastInsert)
|
|
|
|
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, QgsFeatureSink.FastInsert)
|
|
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, QgsFeatureSink.FastInsert)
|