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datamanager.py
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datamanager.py
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# -*- coding: utf-8 -*-
# (C) 2014 Minoru Akagi
# SPDX-License-Identifier: GPL-2.0-or-later
# begin: 2014-01-16
import os
from PyQt5.QtCore import Qt, QSize, QUrl
from PyQt5.QtGui import QColor, QImage, QPainter
from qgis.core import QgsMapLayer
from . import utils
from .utils import logMessage
class DataManager:
""" manages a list of unique items """
def __init__(self):
self._list = []
def count(self):
return len(self._list)
def _index(self, data):
if data in self._list:
return self._list.index(data)
index = len(self._list)
self._list.append(data)
return index
class ImageManager(DataManager):
IMG_MAP = 1
IMG_LAYER = 2
IMG_FILE = 3
def __init__(self, exportSettings):
DataManager.__init__(self)
self.exportSettings = exportSettings
self._renderer = None
def mapImageIndex(self, width, height, extent, transp_background, format):
img = (self.IMG_MAP, (None, width, height, extent, transp_background), format)
return self._index(img)
def layerImageIndex(self, layerids, width, height, extent, transp_background, format):
img = (self.IMG_LAYER, (layerids, width, height, extent, transp_background), format)
return self._index(img)
def imageFileIndex(self, path):
img = (self.IMG_FILE, path, "")
return self._index(img)
def renderedImage(self, layerids, width, height, extent, transp_background=False):
# render layers with QgsMapRendererCustomPainterJob
from qgis.core import QgsMapRendererCustomPainterJob
antialias = True
settings = self.exportSettings.mapSettings
# store old map settings
old_outputSize = settings.outputSize()
old_extent = settings.extent()
old_rotation = settings.rotation()
old_layers = settings.layers()
old_backgroundColor = settings.backgroundColor()
# map settings
settings.setOutputSize(QSize(width, height))
settings.setExtent(extent.unrotatedRect())
settings.setRotation(extent.rotation())
if layerids:
settings.setLayers(utils.getLayersByLayerIds(layerids))
if transp_background:
settings.setBackgroundColor(QColor(Qt.transparent))
has_pluginlayer = False
for layer in settings.layers():
if layer and layer.type() == QgsMapLayer.PluginLayer:
has_pluginlayer = True
break
# create an image
image = QImage(width, height, QImage.Format_ARGB32_Premultiplied)
painter = QPainter()
painter.begin(image)
if antialias:
painter.setRenderHint(QPainter.Antialiasing)
# rendering
job = QgsMapRendererCustomPainterJob(settings, painter)
if has_pluginlayer:
job.renderSynchronously() # use this method so that TileLayerPlugin layer is rendered correctly
else:
job.start()
job.waitForFinished()
painter.end()
# restore map settings
settings.setOutputSize(old_outputSize)
settings.setExtent(old_extent)
settings.setRotation(old_rotation)
settings.setLayers(old_layers)
settings.setBackgroundColor(old_backgroundColor)
return image
def image(self, index):
imageType, args, fmt = self._list[index]
if imageType == self.IMG_FILE:
image_path = args
if os.path.isfile(image_path):
return QImage(image_path)
else:
logMessage("Image file not found: {0}".format(image_path))
else: # IMG_MAP or IMG_LAYER
image = self.renderedImage(*args)
if fmt == "JPEG":
return utils.jpegCompressedImage(image)
return image
image = QImage(1, 1, QImage.Format_RGB32)
image.fill(Qt.lightGray)
return image
def dataUri(self, index):
imageType, args, fmt = self._list[index]
if imageType == self.IMG_FILE:
return utils.imageFile2dataUri(args)
image = self.image(index)
if image:
return utils.image2dataUri(image, fmt=fmt)
return ""
def write(self, index, path):
imageType, args, fmt = self._list[index]
if imageType == self.IMG_FILE:
image_path = args
if os.path.isfile(image_path):
utils.copyFile(image_path, path, overwrite=True)
return
self.image(index).save(path)
class MaterialManager(DataManager):
# following six material types are defined also in JS
# first three types are basic material types
MESH_LAMBERT = 0
MESH_PHONG = 1
MESH_TOON = 2
LINE = 3
LINE_MESH = 4
SPRITE_IMAGE = 5
POINT = 6
# other material types for internal use
MESH_MATERIAL = 10
MESH_FLAT = 11
MESH_BASIC = 13
WIREFRAME = 12
MAP_IMAGE = 21
LAYER_IMAGE = 22
IMAGE_FILE = 23
ERROR_COLOR = "0"
def __init__(self, imageManager, basicType=MESH_LAMBERT):
DataManager.__init__(self)
self.imageManager = imageManager
self.basicMaterialType = basicType
def _indexCol(self, type, color, opacity=1, doubleSide=False, opts=None):
if color[0:2] != "0x":
color = self.ERROR_COLOR
mtl = (type, color, opacity, doubleSide, opts)
return self._index(mtl)
def getMeshMaterialIndex(self, color, opacity=1, doubleSide=False):
return self._indexCol(self.MESH_MATERIAL, color, opacity, doubleSide)
def getMeshFlatMaterialIndex(self, color, opacity=1, doubleSide=False):
return self._indexCol(self.MESH_FLAT, color, opacity, doubleSide)
def getMeshBasicMaterialIndex(self, color, opacity=1, doubleSide=False):
return self._indexCol(self.MESH_BASIC, color, opacity, doubleSide)
def getPointMaterialIndex(self, color, opacity=1, size=1):
return self._indexCol(self.POINT, color, opacity, False, size)
def getLineIndex(self, color, opacity=1, dashed=False):
return self._indexCol(self.LINE, color, opacity, opts=dashed)
def getMeshLineIndex(self, color, opacity=1, thickness=1, dashed=False):
return self._indexCol(self.LINE_MESH, color, opacity, opts=(thickness, dashed))
def getWireframeIndex(self, color, opacity=1):
return self._indexCol(self.WIREFRAME, color, opacity)
def getMapImageIndex(self, width, height, extent, opacity=1, transp_background=False, shading=True, format="PNG"):
mtl = (self.MAP_IMAGE, None, opacity, True, ((width, height, extent, transp_background, format), shading))
return self._index(mtl)
def getLayerImageIndex(self, layerids, width, height, extent, opacity=1, transp_background=False, shading=True, format="PNG"):
mtl = (self.LAYER_IMAGE, None, opacity, True, ((layerids, width, height, extent, transp_background, format), shading))
return self._index(mtl)
def getImageFileIndex(self, path, opacity=1, transp_background=False, doubleSide=False, shading=True):
mtl = (self.IMAGE_FILE, None, opacity, doubleSide, (path, transp_background, shading))
return self._index(mtl)
def getSpriteImageIndex(self, path_url, opacity=1):
transp_background = True
mtl = (self.SPRITE_IMAGE, None, opacity, False, (path_url, transp_background))
return self._index(mtl)
def build(self, index, filepath=None, url=None, base64=False):
mt, color, opacity, doubleSide, opts = self._list[index]
transp_background = False
shading = True
m = {
"type": mt if mt in [self.POINT, self.LINE, self.LINE_MESH, self.SPRITE_IMAGE] else self.basicMaterialType
}
if color is None:
if mt == self.MAP_IMAGE:
args, shading = opts
imgIndex = self.imageManager.mapImageIndex(*args)
elif mt == self.LAYER_IMAGE:
args, shading = opts
imgIndex = self.imageManager.layerImageIndex(*args)
elif mt == self.IMAGE_FILE:
imagepath, transp_background, shading = opts
imgIndex = self.imageManager.imageFileIndex(imagepath)
elif mt == self.SPRITE_IMAGE:
path_url, transp_background = opts
if path_url.startswith("http:") or path_url.startswith("https:"):
url = path_url
filepath = None
else:
imgIndex = self.imageManager.imageFileIndex(path_url)
if url is None:
if base64:
m["image"] = {"base64": self.imageManager.dataUri(imgIndex)}
else:
m["image"] = {"object": self.imageManager.image(imgIndex)}
else:
m["image"] = {"url": url}
if filepath:
# write image to a file
self.imageManager.write(imgIndex, filepath)
else:
m["c"] = int(color, 16)
if mt == self.POINT:
m["s"] = opts # size
elif mt == self.LINE:
m["dashed"] = opts
elif mt == self.LINE_MESH:
thickness, dashed = opts
m["thickness"] = thickness
m["dashed"] = dashed
elif mt == self.MESH_BASIC:
shading = False
if transp_background:
m["t"] = 1
if mt == self.WIREFRAME:
m["w"] = 1
if mt == self.MESH_FLAT:
m["flat"] = 1
if opacity < 1:
m["o"] = opacity
if doubleSide:
m["ds"] = 1
if not shading:
m["bm"] = True
return m
def buildAll(self, pathRoot=None, urlRoot=None, base64=False):
mList = []
for i, item in enumerate(self._list):
mt, color, opacity, doubleSide, opts = item
filepath = url = None
if pathRoot and color is None:
if mt == self.SPRITE_IMAGE:
path_url = opts[0]
if not path_url.startswith("http:") and not path_url.startswith("https:"):
ext = os.path.splitext(path_url)[1].lower()
suffix = "{}{}".format(i, ext)
filepath = pathRoot + suffix
url = urlRoot + suffix
m = self.build(i, filepath, url, base64)
mList.append(m)
return mList
class ModelManager(DataManager):
def __init__(self, exportSettings):
DataManager.__init__(self)
self.exportSettings = exportSettings
def modelIndex(self, path):
return self._index(path)
def build(self, export=True, base64=False):
a = []
for path_url in self._list:
if path_url.startswith("http:") or path_url.startswith("https:"):
a.append({"url": path_url})
elif base64:
_, ext = os.path.splitext(path_url)
a.append({"base64": utils.base64file(path_url),
"ext": ext[1:],
"resourcePath": "./data/{}/models/".format(self.exportSettings.outputFileTitle())})
else:
if export:
url = "./data/{}/models/{}".format(self.exportSettings.outputFileTitle(),
os.path.basename(path_url))
else:
url = QUrl.fromLocalFile(path_url).toString()
a.append({"url": url})
return a
def hasColladaModel(self):
for f in self._list:
_, ext = os.path.splitext(f)
if ext == ".dae":
return True
return False
def hasGLTFModel(self):
for f in self._list:
_, ext = os.path.splitext(f)
if ext in [".gltf", ".glb"]:
return True
return False
def filesToCopy(self):
f = []
if self._list:
if self.hasColladaModel():
f.append({"files": ["js/threejs/loaders/ColladaLoader.js"], "dest": "threejs/loaders"})
if self.hasGLTFModel():
f.append({"files": ["js/threejs/loaders/GLTFLoader.js"], "dest": "threejs/loaders"})
f.append({"files": self._list, "dest": "./data/{}/models".format(self.exportSettings.outputFileTitle())})
return f
def scripts(self):
s = []
if self._list:
if self.hasColladaModel():
s.append("./threejs/loaders/ColladaLoader.js")
if self.hasGLTFModel():
s.append("./threejs/loaders/GLTFLoader.js")
return s