# -*- 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 os
import math
from qgis.PyQt.QtGui import QIcon
from qgis.core import QgsWkbTypes, QgsFeature, QgsGeometry, QgsPoint
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 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 defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Rectangles, ovals, diamonds (variable)')
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(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())
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()
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)