# -*- coding: utf-8 -*-
"""
***************************************************************************
RectanglesOvalsDiamondsFixed.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 os
import math
from qgis.PyQt.QtGui import QIcon
from qgis.core import Qgis, QgsFeature, QgsGeometry, QgsPoint, QgsWkbTypes
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.core.ProcessingLog import ProcessingLog
from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterSelection
from processing.core.parameters import ParameterNumber
from processing.core.outputs import OutputVector
from processing.tools import dataobjects, vector
class RectanglesOvalsDiamondsFixed(GeoAlgorithm):
INPUT_LAYER = 'INPUT_LAYER'
SHAPE = 'SHAPE'
WIDTH = 'WIDTH'
HEIGHT = 'HEIGHT'
ROTATION = 'ROTATION'
SEGMENTS = 'SEGMENTS'
OUTPUT_LAYER = 'OUTPUT_LAYER'
def defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Rectangles, ovals, diamonds (fixed)')
self.group, self.i18n_group = self.trAlgorithm('Vector geometry tools')
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(ParameterNumber(self.WIDTH, self.tr('Width'),
0.0000001, 999999999.0, 1.0))
self.addParameter(ParameterNumber(self.HEIGHT, self.tr('Height'),
0.0000001, 999999999.0, 1.0))
self.addParameter(ParameterNumber(self.ROTATION, self.tr('Rotation'),
0.0, 360.0, optional=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 processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
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().toList(),
QgsWkbTypes.Polygon,
layer.crs())
outFeat = QgsFeature()
features = vector.features(layer)
total = 100.0 / len(features)
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()
xOffset = width / 2.0
yOffset = height / 2.0
if rotation is not None:
phi = rotation * math.pi / 180
for current, feat in enumerate(features):
point = feat.geometry().asPoint()
x = point.x()
y = point.y()
points = [(-xOffset, -yOffset), (-xOffset, yOffset), (xOffset, yOffset), (xOffset, -yOffset)]
polygon = [[QgsPoint(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):
point = feat.geometry().asPoint()
x = point.x()
y = point.y()
points = [(-xOffset, -yOffset), (-xOffset, yOffset), (xOffset, yOffset), (xOffset, -yOffset)]
polygon = [[QgsPoint(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()
xOffset = width / 2.0
yOffset = height / 2.0
if rotation is not None:
phi = rotation * math.pi / 180
for current, feat in enumerate(features):
point = feat.geometry().asPoint()
x = point.x()
y = point.y()
points = [(0.0, -yOffset), (-xOffset, 0.0), (0.0, yOffset), (xOffset, 0.0)]
polygon = [[QgsPoint(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):
point = feat.geometry().asPoint()
x = point.x()
y = point.y()
points = [(0.0, -yOffset), (-xOffset, 0.0), (0.0, yOffset), (xOffset, 0.0)]
polygon = [[QgsPoint(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()
xOffset = width / 2.0
yOffset = height / 2.0
if rotation is not None:
phi = rotation * math.pi / 180
for current, feat in enumerate(features):
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 = [[QgsPoint(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):
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 = [[QgsPoint(i[0] + x, i[1] + y) for i in points]]
ft.setGeometry(QgsGeometry.fromPolygon(polygon))
ft.setAttributes(feat.attributes())
writer.addFeature(ft)