forked from minorua/Qgis2threejs
/
qgis2threejsmain.py
1151 lines (981 loc) · 40.9 KB
/
qgis2threejsmain.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Qgis2threejs
A QGIS plugin
export terrain data, map canvas image and vector data to web browser
-------------------
begin : 2014-01-16
copyright : (C) 2014 Minoru Akagi
email : akaginch@gmail.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. *
* *
***************************************************************************/
"""
# Import the PyQt and QGIS libraries
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
import os
import codecs
import datetime
try:
from osgeo import ogr
except ImportError:
import ogr
import gdal2threejs
import qgis2threejstools as tools
from quadtree import *
from vectorobject import *
from propertyreader import DEMPropertyReader, VectorPropertyReader
apiChanged23 = QGis.QGIS_VERSION_INT >= 20300
# used for tree widget and properties
class ObjectTreeItem:
topItemNames = ["World", "Controls", "DEM", "Additional DEM", "Point", "Line", "Polygon"]
ITEM_WORLD = 0
ITEM_CONTROLS = 1
ITEM_DEM = 2
ITEM_OPTDEM = 3
ITEM_POINT = 4
ITEM_LINE = 5
ITEM_POLYGON = 6
class Point:
def __init__(self, x, y, z=0):
self.x = x
self.y = y
self.z = z
class MapTo3D:
def __init__(self, mapCanvas, planeWidth=100, verticalExaggeration=1, verticalShift=0):
# map canvas
#self.canvasWidth, self.canvasHeight
self.mapExtent = mapCanvas.extent()
# 3d
self.planeWidth = planeWidth
self.planeHeight = planeWidth * mapCanvas.extent().height() / mapCanvas.extent().width()
self.verticalExaggeration = verticalExaggeration
self.verticalShift = verticalShift
self.multiplier = planeWidth / mapCanvas.extent().width()
self.multiplierZ = self.multiplier * verticalExaggeration
def transform(self, x, y, z=0):
extent = self.mapExtent
return Point((x - extent.xMinimum()) * self.multiplier - self.planeWidth / 2,
(y - extent.yMinimum()) * self.multiplier - self.planeHeight / 2,
(z + self.verticalShift) * self.multiplierZ)
def transformPoint(self, pt):
return self.transform(pt.x, pt.y, pt.z)
class Feature:
def __init__(self, layer=None, prop=None, f=None):
self.layer = layer
self.prop = prop
self.f = f
self.clearGeometry()
def clearGeometry(self):
self.pts = []
self.lines = []
self.polygons = []
self.centroids = []
def setQgsFeature(self, qFeat):
self.f = qFeat
def addPoint(self, point):
self.pts.append(point)
def addLine(self, line):
self.lines.append(line)
def addPolygon(self, polygon):
self.polygons.append(polygon)
def addCentroid(self, centroid):
self.centroids.append(centroid)
def pointsAsList(self):
return map(lambda pt: [pt.x, pt.y, pt.z], self.pts)
def linesAsList(self):
l = []
for line in self.lines:
l.append(map(lambda pt: [pt.x, pt.y, pt.z], line))
return l
def polygonsAsList(self):
p = []
for boundaries in self.polygons:
b = []
for boundary in boundaries:
b.append(map(lambda pt: [pt.x, pt.y, pt.z], boundary))
p.append(b)
return p
def color(self):
return self.prop.color(self.layer, self.f)
def transparency(self):
return self.prop.transparency(self.layer, self.f)
def propValues(self):
return self.prop.values(self.f)
class OutputContext:
def __init__(self, templateName, mapTo3d, canvas, properties, dialog, objectTypeManager, localBrowsingMode=True):
self.templateName = templateName
self.mapTo3d = mapTo3d
self.canvas = canvas
self.properties = properties
self.dialog = dialog
self.objectTypeManager = objectTypeManager
self.localBrowsingMode = localBrowsingMode
mapSettings = canvas.mapSettings() if apiChanged23 else canvas.mapRenderer()
self.crs = mapSettings.destinationCrs()
p = properties[ObjectTreeItem.ITEM_CONTROLS]
if p is None:
self.controls = QSettings().value("/Qgis2threejs/lastControls", "TrackballControls.js", type=unicode)
else:
self.controls = p["comboBox_Controls"]
self.demLayerId = demLayerId = properties[ObjectTreeItem.ITEM_DEM]["comboBox_DEMLayer"]
if demLayerId:
layer = QgsMapLayerRegistry().instance().mapLayer(demLayerId)
self.warp_dem = tools.MemoryWarpRaster(layer.source().encode("UTF-8"))
else:
self.warp_dem = tools.FlatRaster()
# deprecated
def setWarpDem(self, warp_dem):
QMessageBox.information(None, "", "setWarpDem has been deprecated")
self.warp_dem = warp_dem
class MaterialManager:
MESH_LAMBERT = 0
LINE_BASIC = 1
WIREFRAME = 2
ERROR_COLOR = "0"
def __init__(self):
self.materials = []
def getMeshLambertIndex(self, color, transparency=0):
return self.getIndex(self.MESH_LAMBERT, color, transparency)
def getLineBasicIndex(self, color, transparency=0):
return self.getIndex(self.LINE_BASIC, color, transparency)
def getWireframeIndex(self, color, transparency=0):
return self.getIndex(self.WIREFRAME, color, transparency)
def getIndex(self, type, color, transparency=0):
if color[0:2] != "0x":
color = self.ERROR_COLOR
mat = (type, color, transparency)
if mat in self.materials:
return self.materials.index(mat)
index = len(self.materials)
self.materials.append(mat)
return index
def write(self, f):
f.write("\n")
for index, mat in enumerate(self.materials):
transparency = mat[2]
if transparency > 0:
opacity = 1.0 - float(transparency) / 100
f.write("mat[{0}] = {{type:{1},c:{2},o:{3}}};\n".format(index, mat[0], mat[1], opacity))
else:
f.write("mat[{0}] = {{type:{1},c:{2}}};\n".format(index, mat[0], mat[1]))
class JSWriter:
def __init__(self, htmlfilename, context):
self.htmlfilename = htmlfilename
self.context = context
self.jsfile = None
self.jsindex = -1
self.jsfile_count = 0
self.layerCount = 0
self.currentLayerIndex = 0
self.currentFeatureIndex = -1
self.attrs = []
self.materialManager = MaterialManager()
#TODO: integrate OutputContext and JSWriter => ThreeJSExporter
#TODO: written flag
def setContext(self, context):
self.context = context
def openFile(self, newfile=False):
if newfile:
self.prepareNext()
if self.jsindex == -1:
jsfilename = os.path.splitext(self.htmlfilename)[0] + ".js"
else:
jsfilename = os.path.splitext(self.htmlfilename)[0] + "_%d.js" % self.jsindex
self.jsfile = codecs.open(jsfilename, "w", "UTF-8")
self.jsfile_count += 1
def closeFile(self):
if self.jsfile:
self.jsfile.close()
self.jsfile = None
def write(self, data):
if self.jsfile is None:
self.openFile()
self.jsfile.write(data)
def writeWorldInfo(self):
# write information for coordinates transformation
extent = self.context.canvas.extent()
mapTo3d = self.context.mapTo3d
fmt = "world = new World([{0},{1},{2},{3}],{4},{5},{6});\n"
self.write(fmt.format(extent.xMinimum(), extent.yMinimum(), extent.xMaximum(), extent.yMaximum(),
mapTo3d.planeWidth, mapTo3d.verticalExaggeration, mapTo3d.verticalShift))
def obj2js(self, obj, escape=False):
if isinstance(obj, dict):
items = []
for k, v in obj.iteritems():
items.append("{0}:{1}".format(k, self.obj2js(v)))
return "{" + ",".join(items) + "}"
elif isinstance(obj, list):
items = []
for v in obj:
items.append(unicode(self.obj2js(v)))
return "[" + ",".join(items) + "]"
elif isinstance(obj, bool):
return "true" if obj else "false"
elif isinstance(obj, (str, unicode)):
if escape:
return '"' + obj.replace("\\", "\\\\").replace('"', '\\"') + '"'
return '"' + obj + '"'
elif isinstance(obj, (int, float)):
return obj
return '"' + str(obj) + '"'
def writeLayer(self, obj, fieldNames=None):
self.currentLayerIndex = self.layerCount
self.write("\n" + "lyr[{0}] = new MapLayer({1});\n".format(self.currentLayerIndex, self.obj2js(obj)))
if fieldNames is not None:
self.write(u"lyr[{0}].a = {1};\n".format(self.currentLayerIndex, self.obj2js(fieldNames)))
self.layerCount += 1
self.currentFeatureIndex = -1
self.attrs = []
return self.currentLayerIndex
def writeFeature(self, f):
self.currentFeatureIndex += 1
self.write("lyr[{0}].f[{1}] = {2};\n".format(self.currentLayerIndex, self.currentFeatureIndex, self.obj2js(f)))
def addAttributes(self, attrs):
self.attrs.append(attrs)
def writeAttributes(self):
for index, attrs in enumerate(self.attrs):
self.write(u"lyr[{0}].f[{1}].a = {2};\n".format(self.currentLayerIndex, index, self.obj2js(attrs, True)))
def prepareNext(self):
self.closeFile()
self.jsindex += 1
def options(self):
options = []
properties = self.context.properties
world = properties[ObjectTreeItem.ITEM_WORLD] or {}
if world.get("radioButton_Color", False):
options.append("option.bgcolor = {0};".format(world.get("lineEdit_Color", 0)))
return "\n".join(options)
def scripts(self):
filetitle = os.path.splitext(os.path.split(self.htmlfilename)[1])[0]
if self.jsindex == -1:
return '<script src="./%s.js"></script>' % filetitle
return "\n".join(map(lambda x: '<script src="./%s_%s.js"></script>' % (filetitle, x), range(self.jsfile_count)))
def exportToThreeJS(htmlfilename, context, progress=None):
mapTo3d = context.mapTo3d
canvas = context.canvas
extent = canvas.extent()
if progress is None:
progress = dummyProgress
temp_dir = QDir.tempPath()
#TODO: do in JSWriter?
timestamp = datetime.datetime.today().strftime("%Y%m%d%H%M%S")
if htmlfilename == "":
htmlfilename = tools.temporaryOutputDir() + "/%s.html" % timestamp
out_dir, filename = os.path.split(htmlfilename)
if not QDir(out_dir).exists():
QDir().mkpath(out_dir)
filetitle = os.path.splitext(filename)[0]
demProperties = context.properties[ObjectTreeItem.ITEM_DEM]
isSimpleMode = demProperties.get("radioButton_Simple", False)
# create JavaScript writer object
writer = JSWriter(htmlfilename, context)
writer.openFile(not isSimpleMode)
writer.writeWorldInfo()
progress(5)
#TODO
writer.timestamp = timestamp
# write primary DEM
if isSimpleMode:
writeSimpleDEM(writer, demProperties, progress)
else:
writeMultiResDEM(writer, demProperties, progress)
writer.prepareNext()
# write additional DEM(s)
primaryDEMLayerId = demProperties["comboBox_DEMLayer"]
for layerId, properties in context.properties[ObjectTreeItem.ITEM_OPTDEM].iteritems():
if layerId != primaryDEMLayerId and properties.get("visible", False):
writeSimpleDEM(writer, properties)
progress(50)
# write vector data
writeVectors(writer)
progress(80)
# copy three.js files
tools.copyThreejsFiles(out_dir, context.controls)
# copy additional library files
templatePath = os.path.join(tools.templateDir(), context.templateName)
metadata = tools.getTemplateMetadata(templatePath)
tools.copyLibraries(out_dir, metadata)
# generate html file
with codecs.open(templatePath, "r", "UTF-8") as f:
html = f.read()
with codecs.open(htmlfilename, "w", "UTF-8") as f:
f.write(html.replace("${title}", filetitle).replace("${controls}", '<script src="./threejs/%s"></script>' % context.controls).replace("${options}", writer.options()).replace("${scripts}", writer.scripts()))
return htmlfilename
def writeSimpleDEM(writer, properties, progress=None):
context = writer.context
mapTo3d = context.mapTo3d
canvas = context.canvas
extent = canvas.extent()
temp_dir = QDir.tempPath()
timestamp = writer.timestamp
htmlfilename = writer.htmlfilename
if progress is None:
progress = dummyProgress
prop = DEMPropertyReader(properties)
dem_width = prop.width()
dem_height = prop.height()
# warp dem
# calculate extent. output dem should be handled as points.
xres = extent.width() / (dem_width - 1)
yres = extent.height() / (dem_height - 1)
geotransform = [extent.xMinimum() - xres / 2, xres, 0, extent.yMaximum() + yres / 2, 0, -yres]
wkt = str(context.crs.toWkt())
layerName = ""
demLayerId = properties["comboBox_DEMLayer"]
if demLayerId:
layer = QgsMapLayerRegistry().instance().mapLayer(demLayerId)
layerName = layer.name()
warp_dem = tools.MemoryWarpRaster(layer.source().encode("UTF-8"))
else:
warp_dem = tools.FlatRaster()
# warp dem
dem_values = warp_dem.read(dem_width, dem_height, wkt, geotransform)
# calculate statistics
stats = {"max": max(dem_values), "min": min(dem_values)}
# shift and scale
if mapTo3d.verticalShift != 0:
dem_values = map(lambda x: x + mapTo3d.verticalShift, dem_values)
if mapTo3d.multiplierZ != 1:
dem_values = map(lambda x: x * mapTo3d.multiplierZ, dem_values)
if debug_mode:
qDebug("Warped DEM: %d x %d, extent %s" % (dem_width, dem_height, str(geotransform)))
surroundings = properties.get("checkBox_Surroundings", False)
if surroundings:
roughenEdges(dem_width, dem_height, dem_values, properties["spinBox_Roughening"])
# layer dict
lyr = {"type": "dem", "name": layerName, "stats": stats}
lyr["q"] = 1 #queryable
dem = {"width": dem_width, "height": dem_height}
dem["plane"] = {"width": mapTo3d.planeWidth, "height": mapTo3d.planeHeight, "offsetX": 0, "offsetY": 0}
lyr["dem"] = [dem]
# DEM transparency
demTransparency = prop.properties["spinBox_demtransp"]
# display type
texData = texSrc = None
if properties.get("radioButton_MapCanvas", False):
# save map canvas image
#TODO: prepare material(texture) in Material manager (result is tex -> material index)
if 1: #context.localBrowsingMode:
texfilename = os.path.join(temp_dir, "tex%s.png" % (timestamp))
canvas.saveAsImage(texfilename)
texData = gdal2threejs.base64image(texfilename)
tools.removeTemporaryFiles([texfilename, texfilename + "w"])
else:
#TODO: multiple DEMs output not in localBrowsingMode
texfilename = os.path.splitext(htmlfilename)[0] + ".png"
canvas.saveAsImage(texfilename)
texSrc = os.path.split(texfilename)[1]
tools.removeTemporaryFiles([texfilename + "w"])
elif properties.get("radioButton_ImageFile", False):
filename = properties.get("lineEdit_ImageFile", "")
if os.path.exists(filename):
texData = gdal2threejs.base64image(filename)
else:
texData = "" #
QgsMessageLog.logMessage(u'Image file not found: {0}'.format(filename), "Qgis2threejs")
elif properties.get("radioButton_SolidColor", False):
dem["m"] = writer.materialManager.getMeshLambertIndex(properties["lineEdit_Color"], demTransparency)
elif properties.get("radioButton_Wireframe", False):
dem["m"] = writer.materialManager.getWireframeIndex(properties["lineEdit_Color"], demTransparency)
if texData is not None or texSrc is not None:
tex = {}
if texSrc is not None:
tex["src"] = texSrc
if demTransparency > 0:
demOpacity = 1.0 - float(demTransparency) / 100
tex["o"] = demOpacity
tex["t"] = demOpacity < 1 #
dem["t"] = tex
if not surroundings and properties.get("checkBox_Sides", False):
side = {}
sidesTransparency = prop.properties["spinBox_sidetransp"]
if sidesTransparency > 0:
sidesOpacity = str(1.0 - float(sidesTransparency) / 100)
side["o"] = sidesOpacity
dem["s"] = side
if not surroundings and properties.get("checkBox_Frame", False):
dem["frame"] = True
# write layer and central dem
lyrIdx = writer.writeLayer(lyr)
writer.write("lyr[{0}].dem[0].data = [{1}];\n".format(lyrIdx, ",".join(map(gdal2threejs.formatValue, dem_values))))
if texData is not None:
writer.write('lyr[{0}].dem[0].t.data = "{1}";\n'.format(lyrIdx, texData))
# write surrounding dems
if surroundings:
writeSurroundingDEM(writer, lyrIdx, stats, properties, progress)
# overwrite stats
writer.write("lyr[{0}].stats = {1};\n".format(lyrIdx, writer.obj2js(stats)))
def roughenEdges(width, height, values, interval):
if interval == 1:
return
for y in [0, height - 1]:
for x1 in range(interval, width, interval):
x0 = x1 - interval
z0 = values[x0 + width * y]
z1 = values[x1 + width * y]
for xx in range(1, interval):
z = (z0 * (interval - xx) + z1 * xx) / interval
values[x0 + xx + width * y] = z
for x in [0, width - 1]:
for y1 in range(interval, height, interval):
y0 = y1 - interval
z0 = values[x + width * y0]
z1 = values[x + width * y1]
for yy in range(1, interval):
z = (z0 * (interval - yy) + z1 * yy) / interval
values[x + width * (y0 + yy)] = z
def writeSurroundingDEM(writer, lyrIdx, stats, properties, progress=None):
context = writer.context
mapTo3d = context.mapTo3d
canvas = context.canvas
if progress is None:
progress = dummyProgress
demlayer = QgsMapLayerRegistry().instance().mapLayer(properties["comboBox_DEMLayer"])
htmlfilename = writer.htmlfilename
# options
size = properties["spinBox_Size"]
roughening = properties["spinBox_Roughening"]
demTransparency = properties["spinBox_demtransp"]
prop = DEMPropertyReader(properties)
dem_width = (prop.width() - 1) / roughening + 1
dem_height = (prop.height() - 1) / roughening + 1
# create an image for texture
image_basesize = 128
hpw = canvas.extent().height() / canvas.extent().width()
if hpw < 1:
image_width = image_basesize
image_height = round(image_width * hpw)
#image_height = image_basesize * max(1, int(round(1 / hpw))) # not rendered expectedly
else:
image_height = image_basesize
image_width = round(image_height / hpw)
image = QImage(image_width, image_height, QImage.Format_ARGB32_Premultiplied)
layerids = []
for layer in canvas.layers():
layerids.append(unicode(layer.id()))
# set up a renderer
labeling = QgsPalLabeling()
renderer = QgsMapRenderer()
renderer.setOutputSize(image.size(), image.logicalDpiX())
renderer.setDestinationCrs(context.crs)
renderer.setProjectionsEnabled(True)
renderer.setLabelingEngine(labeling)
renderer.setLayerSet(layerids)
painter = QPainter()
antialias = True
fillColor = canvas.canvasColor()
if float(".".join(QT_VERSION_STR.split(".")[0:2])) < 4.8:
fillColor = qRgb(fillColor.red(), fillColor.green(), fillColor.blue())
warp_dem = tools.MemoryWarpRaster(demlayer.source().encode("UTF-8"))
wkt = str(context.crs.toWkt())
scripts = []
plane_index = 1
size2 = size * size
for i in range(size2):
progress(40 * i / size2 + 10)
if i == (size2 - 1) / 2: # center (map canvas)
continue
sx = i % size - (size - 1) / 2
sy = i / size - (size - 1) / 2
# calculate extent
e = canvas.extent()
extent = QgsRectangle(e.xMinimum() + sx * e.width(), e.yMinimum() + sy * e.height(),
e.xMaximum() + sx * e.width(), e.yMaximum() + sy * e.height())
# calculate extent. output dem should be handled as points.
xres = extent.width() / (dem_width - 1)
yres = extent.height() / (dem_height - 1)
geotransform = [extent.xMinimum() - xres / 2, xres, 0, extent.yMaximum() + yres / 2, 0, -yres]
# warp dem
dem_values = warp_dem.read(dem_width, dem_height, wkt, geotransform)
if stats is None:
stats = {"max": max(dem_values), "min": min(dem_values)}
else:
stats["max"] = max(max(dem_values), stats["max"])
stats["min"] = min(min(dem_values), stats["min"])
# shift and scale
if mapTo3d.verticalShift != 0:
dem_values = map(lambda x: x + mapTo3d.verticalShift, dem_values)
if mapTo3d.multiplierZ != 1:
dem_values = map(lambda x: x * mapTo3d.multiplierZ, dem_values)
if debug_mode:
qDebug("Warped DEM: %d x %d, extent %s" % (dem_width, dem_height, str(geotransform)))
# generate javascript data file
planeWidth = mapTo3d.planeWidth * extent.width() / canvas.extent().width()
planeHeight = mapTo3d.planeHeight * extent.height() / canvas.extent().height()
offsetX = mapTo3d.planeWidth * (extent.xMinimum() - canvas.extent().xMinimum()) / canvas.extent().width() + planeWidth / 2 - mapTo3d.planeWidth / 2
offsetY = mapTo3d.planeHeight * (extent.yMinimum() - canvas.extent().yMinimum()) / canvas.extent().height() + planeHeight / 2 - mapTo3d.planeHeight / 2
dem = {"width": dem_width, "height": dem_height}
dem["plane"] = {"width": planeWidth, "height": planeHeight, "offsetX": offsetX, "offsetY": offsetY}
# display type
texData = None
if properties.get("radioButton_MapCanvas", False):
renderer.setExtent(extent)
# render map image
image.fill(fillColor)
painter.begin(image)
if antialias:
painter.setRenderHint(QPainter.Antialiasing)
renderer.render(painter)
painter.end()
tex = {}
if context.localBrowsingMode:
texData = tools.base64image(image)
else:
texfilename = os.path.splitext(htmlfilename)[0] + "_%d.png" % plane_index
image.save(texfilename)
texSrc = os.path.split(texfilename)[1]
tex["src"] = texSrc
if demTransparency > 0:
demOpacity = 1.0 - float(demTransparency) / 100
tex["o"] = demOpacity
tex["t"] = demOpacity < 1 #
dem["t"] = tex
elif properties.get("radioButton_SolidColor", False):
dem["m"] = writer.materialManager.getMeshLambertIndex(properties["lineEdit_Color"], demTransparency)
elif properties.get("radioButton_Wireframe", False):
dem["m"] = writer.materialManager.getWireframeIndex(properties["lineEdit_Color"], demTransparency)
# write dem object
writer.write("lyr[{0}].dem[{1}] = {2};\n".format(lyrIdx, plane_index, writer.obj2js(dem)))
writer.write("lyr[{0}].dem[{1}].data = [{2}];\n".format(lyrIdx, plane_index, ",".join(map(gdal2threejs.formatValue, dem_values))))
if texData is not None:
writer.write('lyr[{0}].dem[{1}].t.data = "{2}";\n'.format(lyrIdx, plane_index, texData))
plane_index += 1
def writeMultiResDEM(writer, properties, progress=None):
context = writer.context
mapTo3d = context.mapTo3d
canvas = context.canvas
if progress is None:
progress = dummyProgress
demlayer = QgsMapLayerRegistry().instance().mapLayer(properties["comboBox_DEMLayer"])
temp_dir = QDir.tempPath()
timestamp = writer.timestamp
htmlfilename = writer.htmlfilename
out_dir, filename = os.path.split(htmlfilename)
filetitle = os.path.splitext(filename)[0]
# material options
demTransparency = properties["spinBox_demtransp"]
# layer dict
lyr = {"type": "dem", "name": demlayer.name(), "dem": []}
lyr["q"] = 1 #queryable
lyrIdx = writer.writeLayer(lyr)
# create quad tree
quadtree = createQuadTree(canvas.extent(), properties)
if quadtree is None:
QMessageBox.warning(None, "Qgis2threejs", "Focus point/area is not selected.")
return
quads = quadtree.quads()
# create quads and a point on map canvas with rubber bands
context.dialog.createRubberBands(quads, quadtree.focusRect.center())
# create an image for texture
image_basesize = 128
hpw = canvas.extent().height() / canvas.extent().width()
if hpw < 1:
image_width = image_basesize
image_height = round(image_width * hpw)
else:
image_height = image_basesize
image_width = round(image_height / hpw)
image = QImage(image_width, image_height, QImage.Format_ARGB32_Premultiplied)
#qDebug("Created image size: %d, %d" % (image_width, image_height))
layerids = []
for layer in canvas.layers():
layerids.append(unicode(layer.id()))
# set up a renderer
labeling = QgsPalLabeling()
renderer = QgsMapRenderer()
renderer.setOutputSize(image.size(), image.logicalDpiX())
renderer.setDestinationCrs(context.crs)
renderer.setProjectionsEnabled(True)
renderer.setLabelingEngine(labeling)
renderer.setLayerSet(layerids)
painter = QPainter()
antialias = True
fillColor = canvas.canvasColor()
if float(".".join(QT_VERSION_STR.split(".")[0:2])) < 4.8:
fillColor = qRgb(fillColor.red(), fillColor.green(), fillColor.blue())
# (currently) dem size should be 2 ^ quadtree.height * a + 1, where a is larger integer than 0
# with smooth resolution change, this is not necessary
dem_width = dem_height = max(64, 2 ** quadtree.height) + 1
warp_dem = tools.MemoryWarpRaster(demlayer.source().encode("UTF-8"))
wkt = str(context.crs.toWkt())
unites_center = True
centerQuads = DEMQuadList(dem_width, dem_height)
scripts = []
stats = None
plane_index = 0
for i, quad in enumerate(quads):
progress(45 * i / len(quads) + 5)
extent = quad.extent
# calculate extent. output dem should be handled as points.
xres = extent.width() / (dem_width - 1)
yres = extent.height() / (dem_height - 1)
geotransform = [extent.xMinimum() - xres / 2, xres, 0, extent.yMaximum() + yres / 2, 0, -yres]
# warp dem
dem_values = warp_dem.read(dem_width, dem_height, wkt, geotransform)
if stats is None:
stats = {"max": max(dem_values), "min": min(dem_values)}
else:
stats["max"] = max(max(dem_values), stats["max"])
stats["min"] = min(min(dem_values), stats["min"])
# shift and scale
if mapTo3d.verticalShift != 0:
dem_values = map(lambda x: x + mapTo3d.verticalShift, dem_values)
if mapTo3d.multiplierZ != 1:
dem_values = map(lambda x: x * mapTo3d.multiplierZ, dem_values)
if debug_mode:
qDebug("Warped DEM: %d x %d, extent %s" % (dem_width, dem_height, str(geotransform)))
# generate javascript data file
planeWidth = mapTo3d.planeWidth * extent.width() / canvas.extent().width()
planeHeight = mapTo3d.planeHeight * extent.height() / canvas.extent().height()
offsetX = mapTo3d.planeWidth * (extent.xMinimum() - canvas.extent().xMinimum()) / canvas.extent().width() + planeWidth / 2 - mapTo3d.planeWidth / 2
offsetY = mapTo3d.planeHeight * (extent.yMinimum() - canvas.extent().yMinimum()) / canvas.extent().height() + planeHeight / 2 - mapTo3d.planeHeight / 2
# value resampling on edges for combination with different resolution DEM
neighbors = quadtree.neighbors(quad)
#qDebug("Output quad (%d %s): height=%d" % (i, str(quad), quad.height))
for direction, neighbor in enumerate(neighbors):
if neighbor is None:
continue
#qDebug(" neighbor %d %s: height=%d" % (direction, str(neighbor), neighbor.height))
interval = 2 ** (quad.height - neighbor.height)
if interval > 1:
if direction == QuadTree.UP or direction == QuadTree.DOWN:
y = 0 if direction == QuadTree.UP else dem_height - 1
for x1 in range(interval, dem_width, interval):
x0 = x1 - interval
z0 = dem_values[x0 + dem_width * y]
z1 = dem_values[x1 + dem_width * y]
for xx in range(1, interval):
z = (z0 * (interval - xx) + z1 * xx) / interval
dem_values[x0 + xx + dem_width * y] = z
else: # LEFT or RIGHT
x = 0 if direction == QuadTree.LEFT else dem_width - 1
for y1 in range(interval, dem_height, interval):
y0 = y1 - interval
z0 = dem_values[x + dem_width * y0]
z1 = dem_values[x + dem_width * y1]
for yy in range(1, interval):
z = (z0 * (interval - yy) + z1 * yy) / interval
dem_values[x + dem_width * (y0 + yy)] = z
if quad.height < quadtree.height or unites_center == False:
dem = {"width": dem_width, "height": dem_height}
dem["plane"] = {"width": planeWidth, "height": planeHeight, "offsetX": offsetX, "offsetY": offsetY}
# display type
texData = None
if properties.get("radioButton_MapCanvas", False):
renderer.setExtent(extent)
# render map image
image.fill(fillColor)
painter.begin(image)
if antialias:
painter.setRenderHint(QPainter.Antialiasing)
renderer.render(painter)
painter.end()
tex = {}
if context.localBrowsingMode:
texData = tools.base64image(image)
else:
texfilename = os.path.splitext(htmlfilename)[0] + "_%d.png" % plane_index
image.save(texfilename)
texSrc = os.path.split(texfilename)[1]
tex["src"] = texSrc
if demTransparency > 0:
demOpacity = 1.0 - float(demTransparency) / 100
tex["o"] = demOpacity
tex["t"] = demOpacity < 1 #
dem["t"] = tex
elif properties.get("radioButton_SolidColor", False):
dem["m"] = writer.materialManager.getMeshLambertIndex(properties["lineEdit_Color"], demTransparency)
elif properties.get("radioButton_Wireframe", False):
dem["m"] = writer.materialManager.getWireframeIndex(properties["lineEdit_Color"], demTransparency)
# write dem object
writer.openFile(True)
writer.write("lyr[{0}].dem[{1}] = {2};\n".format(lyrIdx, plane_index, writer.obj2js(dem)))
writer.write("lyr[{0}].dem[{1}].data = [{2}];\n".format(lyrIdx, plane_index, ",".join(map(gdal2threejs.formatValue, dem_values))))
if texData is not None:
writer.write('lyr[{0}].dem[{1}].t.data = "{2}";\n'.format(lyrIdx, plane_index, texData))
plane_index += 1
else:
centerQuads.addQuad(quad, dem_values)
if unites_center:
extent = centerQuads.extent()
dem_width = (dem_width - 1) * centerQuads.width() + 1
dem_height = (dem_height - 1) * centerQuads.height() + 1
dem_values = centerQuads.unitedDEM()
planeWidth = mapTo3d.planeWidth * extent.width() / canvas.extent().width()
planeHeight = mapTo3d.planeHeight * extent.height() / canvas.extent().height()
offsetX = mapTo3d.planeWidth * (extent.xMinimum() - canvas.extent().xMinimum()) / canvas.extent().width() + planeWidth / 2 - mapTo3d.planeWidth / 2
offsetY = mapTo3d.planeHeight * (extent.yMinimum() - canvas.extent().yMinimum()) / canvas.extent().height() + planeHeight / 2 - mapTo3d.planeHeight / 2
dem = {"width": dem_width, "height": dem_height}
dem["plane"] = {"width": planeWidth, "height": planeHeight, "offsetX": offsetX, "offsetY": offsetY}
# display type
texData = None
if properties.get("radioButton_MapCanvas", False):
if hpw < 1:
image_width = image_basesize * centerQuads.width()
image_height = round(image_width * hpw)
else:
image_height = image_basesize * centerQuads.height()
image_width = round(image_height / hpw)
image = QImage(image_width, image_height, QImage.Format_ARGB32_Premultiplied)
#qDebug("Created image size: %d, %d" % (image_width, image_height))
renderer.setOutputSize(image.size(), image.logicalDpiX())
renderer.setExtent(extent)
# render map image
image.fill(fillColor)
painter.begin(image)
if antialias:
painter.setRenderHint(QPainter.Antialiasing)
renderer.render(painter)
painter.end()
tex = {}
if context.localBrowsingMode:
texData = tools.base64image(image)
else:
texfilename = os.path.splitext(htmlfilename)[0] + "_%d.png" % plane_index
image.save(texfilename)
texSrc = os.path.split(texfilename)[1]
tex["src"] = texSrc
if demTransparency > 0:
demOpacity = str(1.0 - float(demTransparency) / 100)
tex["o"] = demOpacity
tex["t"] = demOpacity < 1 #
dem["t"] = tex
elif properties.get("radioButton_SolidColor", False):
dem["m"] = writer.materialManager.getMeshLambertIndex(properties["lineEdit_Color"], demTransparency)
elif properties.get("radioButton_Wireframe", False):
dem["m"] = writer.materialManager.getWireframeIndex(properties["lineEdit_Color"], demTransparency)
# write dem object
writer.openFile(True)
writer.write("lyr[{0}].dem[{1}] = {2};\n".format(lyrIdx, plane_index, writer.obj2js(dem)))
writer.write("lyr[{0}].dem[{1}].data = [{2}];\n".format(lyrIdx, plane_index, ",".join(map(gdal2threejs.formatValue, dem_values))))
if texData is not None:
writer.write('lyr[{0}].dem[{1}].t.data = "{2}";\n'.format(lyrIdx, plane_index, texData))
plane_index += 1
writer.write("lyr[{0}].stats = {1};\n".format(lyrIdx, writer.obj2js(stats)))
def writeVectors(writer):
context = writer.context
canvas = context.canvas
mapTo3d = context.mapTo3d
warp_dem = context.warp_dem
renderer = QgsMapRenderer()
layerProperties = {}
for itemType in [ObjectTreeItem.ITEM_POINT, ObjectTreeItem.ITEM_LINE, ObjectTreeItem.ITEM_POLYGON]:
for layerId, properties in context.properties[itemType].iteritems():
if properties.get("visible", False):
layerProperties[layerId] = properties
for layerId, properties in layerProperties.iteritems():
layer = QgsMapLayerRegistry().instance().mapLayer(layerId)
if layer is None:
continue
geom_type = layer.geometryType()
prop = VectorPropertyReader(context.objectTypeManager, layer, properties)
obj_mod = context.objectTypeManager.module(prop.mod_index)
if obj_mod is None:
qDebug("Module not found")
continue
# write layer object
lyr = {"name": layer.name(), "f": []}
lyr["type"] = {QGis.Point: "point", QGis.Line: "line", QGis.Polygon: "polygon"}.get(geom_type, "")
lyr["q"] = 1 #queryable
lyr["objType"] = prop.type_name
# make list of field names
writeAttrs = properties.get("checkBox_ExportAttrs", False)
fieldNames = None
if writeAttrs:
fieldNames = []
fields = layer.pendingFields()
for i in range(fields.count()):
fieldNames.append(fields[i].name())
hasLabel = False
if writeAttrs:
attIdx = properties.get("comboBox_Label", None)
if attIdx is not None:
labelHeight = properties.get("labelHeightWidget", [0] * 3)
lyr["l"] = {"i": attIdx, "ht": int(labelHeight[0]), "v": float(labelHeight[2]) * mapTo3d.multiplierZ}
hasLabel = True
# wreite layer object
writer.writeLayer(lyr, fieldNames)
# initialize symbol rendering
layer.rendererV2().startRender(renderer.rendererContext(), layer.pendingFields() if apiChanged23 else layer)
feat = Feature(layer, prop)
transform = QgsCoordinateTransform(layer.crs(), context.crs)
wkt = str(context.crs.toWkt())
request = QgsFeatureRequest().setFilterRect(transform.transformBoundingBox(canvas.extent(), QgsCoordinateTransform.ReverseTransform))
for f in layer.getFeatures(request):
feat.clearGeometry()
feat.setQgsFeature(f)
geom = f.geometry()
geom_type == geom.type()
wkb_type = geom.wkbType()
if geom_type == QGis.Point:
if prop.useZ():
for pt in pointsFromWkb25D(geom.asWkb(), transform):
feat.addPoint(mapTo3d.transform(pt[0], pt[1], pt[2] + prop.relativeHeight(f)))
obj_mod.write(writer, feat)
else:
if geom.isMultipart():
points = geom.asMultiPoint()
else:
points = [geom.asPoint()]
for point in points:
pt = transform.transform(point)
if prop.isHeightRelativeToSurface():
# get surface elevation at the point and relative height
h = warp_dem.readValue(wkt, pt.x(), pt.y()) + prop.relativeHeight(f)
else:
h = prop.relativeHeight(f)
feat.addPoint(mapTo3d.transform(pt[0], pt[1], h))
obj_mod.write(writer, feat)
elif geom_type == QGis.Line:
if prop.useZ():
for line in linesFromWkb25D(geom.asWkb(), transform):
points = []