# -*- 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 math from qgis.core import (QgsApplication, QgsFeature, QgsFeatureSink, QgsGeometry, QgsPointXY, QgsWkbTypes, 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 ParameterNumber from processing.core.outputs import OutputVector from processing.tools import dataobjects class RectanglesOvalsDiamondsFixed(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(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 name(self): return 'rectanglesovalsdiamondsfixed' def displayName(self): return self.tr('Rectangles, ovals, diamonds (fixed)') 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() 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 = [[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): 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() 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 = [[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): 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() 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 = [[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): 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)