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##[Example scripts]=group
##lines=vector
##distance=number 1
##startpoint=number 0
##endpoint=number 0
##output=output vector
from qgis.core import *
from PyQt4.QtCore import *
from processing.core.VectorWriter import VectorWriter
def create_points(feat):
geom = feat.geometry()
length = geom.length()
currentdistance = 0
if endpoint > 0:
length = endpoint
out = QgsFeature()
while startpoint + currentdistance <= length:
point = geom.interpolate(startpoint + currentdistance)
currentdistance = currentdistance + distance
out.setGeometry(point)
attrs = feat.attributes()
attrs.append(currentdistance)
out.setAttributes(attrs)
writer.addFeature(out)
layer = processing.getObject(lines)
fields = layer.dataProvider().fields()
fields.append(QgsField('Distance', QVariant.Double))
writer = VectorWriter(output, None, fields, QGis.WKBPoint,
layer.crs())
feats = processing.features(layer)
nFeat = len(feats)
for i, feat in enumerate(feats):
progress.setPercentage(int(100 * i / nFeat))
create_points(feat)
del writer
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