# -*- 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, QgsPoint) from processing.core.GeoAlgorithm import GeoAlgorithm from processing.core.ProcessingLog import ProcessingLog 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, vector class RectanglesOvalsDiamondsVariable(GeoAlgorithm): 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 defineCharacteristics(self): self.name, self.i18n_name = self.trAlgorithm('Rectangles, ovals, diamonds (variable)') 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 processAlgorithm(self, feedback): 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()) features = vector.features(layer) 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: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width, height or angle. ' 'Skipping...'.format(feat.id()))) 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 = [[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): w = feat[width] h = feat[height] if not w or not h: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width or height. ' 'Skipping...'.format(feat.id()))) 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 = [[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() 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: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width, height or angle. ' 'Skipping...'.format(feat.id()))) 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 = [[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): w = feat[width] h = feat[height] if not w or not h: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width or height. ' 'Skipping...'.format(feat.id()))) 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 = [[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() 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: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width, height or angle. ' 'Skipping...'.format(feat.id()))) 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 = [[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): w = feat[width] h = feat[height] if not w or not h: ProcessingLog.addToLog(ProcessingLog.LOG_WARNING, self.tr('Feature {} has empty ' 'width or height. ' 'Skipping...'.format(feat.id()))) 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 = [[QgsPoint(i[0] + x, i[1] + y) for i in points]] ft.setGeometry(QgsGeometry.fromPolygon(polygon)) ft.setAttributes(feat.attributes()) writer.addFeature(ft)