def triangleMesh(self, dem_width=0, dem_height=0):
if dem_width == 0 and dem_height == 0:
prop = DEMPropertyReader(self.settings.get(ObjectTreeItem.ITEM_DEM))
dem_size = prop.demSize(self.settings.mapSettings.outputSize())
dem_width = dem_size.width()
dem_height = dem_size.height()
key = "{0}x{1}".format(dem_width, dem_height)
if key not in self.triMesh:
mapTo3d = self.settings.mapTo3d()
hw = 0.5 * mapTo3d.planeWidth
hh = 0.5 * mapTo3d.planeHeight
self.triMesh[key] = TriangleMesh(-hw, -hh, hw, hh, dem_width - 1, dem_height - 1)
return self.triMesh[key]
def writeMultiResDEM(writer, properties, progress=None):
settings = writer.settings
mapSettings = settings.mapSettings
mapTo3d = settings.mapTo3d()
baseExtent = settings.baseExtent
progress = progress or dummyProgress
prop = DEMPropertyReader(properties)
# DEM provider
provider = settings.demProviderByLayerId(prop.layerId)
if isinstance(provider, GDALDEMProvider):
demLayer = QgsMapLayerRegistry.instance().mapLayer(prop.layerId)
layerName = demLayer.name()
else:
demLayer = None
layerName = provider.name()
# layer
layer = DEMLayer(writer, demLayer, prop)
lyr = layer.layerObject()
lyr.update({"name": layerName})
writer.writeLayer(lyr)
# quad tree
quadtree = settings.quadtree()
if quadtree is None:
return
# (currently) dem size is 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
# material options
texture_scale = properties.get("comboBox_TextureSize", 100) / 100
transparency = properties.get("spinBox_demtransp", 0)
transp_background = properties.get("checkBox_TransparentBackground", False)
layerImageIds = properties.get("layerImageIds", [])
def materialIndex(extent, image_width, image_height):
# display type
if properties.get("radioButton_MapCanvas", False):
return layer.materialManager.getMapImageIndex(
image_width, image_height, extent, transparency,
transp_background)
elif properties.get("radioButton_LayerImage", False):
return layer.materialManager.getLayerImageIndex(
layerImageIds, image_width, image_height, extent, transparency,
transp_background)
else: #.get("radioButton_SolidColor", False)
return layer.materialManager.getMeshLambertIndex(
properties.get("lineEdit_Color", ""), transparency, True)
blocks = DEMBlocks()
def addDEMBlock(quad_rect, dem_width, dem_height, dem_values, image_width,
image_height):
planeWidth = quad_rect.width() * mapTo3d.planeWidth
planeHeight = quad_rect.height() * mapTo3d.planeHeight
extent = baseExtent.subrectangle(quad_rect)
npt = baseExtent.normalizePoint(extent.center().x(),
extent.center().y())
offsetX = (npt.x() - 0.5) * mapTo3d.planeWidth
offsetY = (npt.y() - 0.5) * mapTo3d.planeHeight
block = DEMBlock(dem_width, dem_height, dem_values, planeWidth,
planeHeight, offsetX, offsetY)
#block.zShift(mapTo3d.verticalShift)
#block.zScale(mapTo3d.multiplierZ)
block.set("m", materialIndex(extent, image_width, image_height))
blocks.appendBlock(block)
# image size
canvas_size = mapSettings.outputSize()
image_width = canvas_size.width() * texture_scale
image_height = canvas_size.height() * texture_scale
quads = quadtree.quads()
unites_center = True
centerQuads = DEMQuadList(dem_width, dem_height)
stats = None
for i, quad in enumerate(quads):
progress(15 * i / len(quads) + 5)
# block extent
extent = baseExtent.subrectangle(quad.rect)
# warp dem
dem_values = provider.read(dem_width, dem_height, extent)
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)
quad.setData(dem_width, dem_height, dem_values)
# process edges to eliminate opening between blocks
quadtree.processEdges()
for i, quad in enumerate(quads):
progress(15 * i / len(quads) + 20)
if unites_center and quad.height == quadtree.height:
centerQuads.addQuad(quad)
else:
addDEMBlock(quad.rect, quad.dem_width, quad.dem_height,
quad.dem_values, image_width, image_height)
if unites_center:
dem_width = (dem_width - 1) * centerQuads.width() + 1
dem_height = (dem_height - 1) * centerQuads.height() + 1
dem_values = centerQuads.unitedDEM()
image_width *= centerQuads.width()
image_height *= centerQuads.height()
addDEMBlock(centerQuads.rect(), dem_width, dem_height, dem_values,
image_width, image_height)
blocks.write(writer, separated=True)
writer.write("lyr.stats = {0};\n".format(pyobj2js(stats)))
writer.writeMaterials(layer.materialManager)
def surroundingDEMBlocks(writer, layer, provider, properties, progress=None):
settings = writer.settings
canvas_size = settings.mapSettings.outputSize()
mapTo3d = settings.mapTo3d()
baseExtent = settings.baseExtent
progress = progress or dummyProgress
# options
size = properties["spinBox_Size"]
roughening = properties["spinBox_Roughening"]
texture_scale = properties.get("comboBox_TextureSize", 100) / 100
transparency = properties.get("spinBox_demtransp", 0)
transp_background = properties.get("checkBox_TransparentBackground", False)
prop = DEMPropertyReader(properties)
dem_size = prop.demSize(canvas_size)
dem_width = (dem_size.width() - 1) / roughening + 1
dem_height = (dem_size.height() - 1) / roughening + 1
# texture size
image_width = canvas_size.width() * texture_scale
image_height = canvas_size.height() * texture_scale
center = baseExtent.center()
rotation = baseExtent.rotation()
blocks = []
size2 = size * size
for i in range(size2):
progress(20 * i / size2 + 10)
if i == (size2 - 1) / 2: # center (map canvas)
continue
# block extent
sx = i % size - (size - 1) / 2
sy = i / size - (size - 1) / 2
block_center = QgsPoint(center.x() + sx * baseExtent.width(),
center.y() + sy * baseExtent.height())
extent = RotatedRect(block_center, baseExtent.width(),
baseExtent.height()).rotate(rotation, center)
# display type
if properties.get("radioButton_MapCanvas", False):
mat = layer.materialManager.getMapImageIndex(
image_width, image_height, extent, transparency,
transp_background)
elif properties.get("radioButton_LayerImage", False):
layerids = properties.get("layerImageIds", [])
mat = layer.materialManager.getLayerImageIndex(
layerids, image_width, image_height, extent, transparency,
transp_background)
else: #.get("radioButton_SolidColor", False)
mat = layer.materialManager.getMeshLambertIndex(
properties.get("lineEdit_Color", ""), transparency, True)
# DEM block
dem_values = provider.read(dem_width, dem_height, extent)
planeWidth, planeHeight = mapTo3d.planeWidth, mapTo3d.planeHeight
offsetX, offsetY = planeWidth * sx, planeHeight * sy
block = DEMBlock(dem_width, dem_height, dem_values, planeWidth,
planeHeight, offsetX, offsetY)
block.zShift(mapTo3d.verticalShift)
block.zScale(mapTo3d.multiplierZ)
block.set("m", mat)
blocks.append(block)
return blocks
def writeSimpleDEM(writer, properties, progress=None):
settings = writer.settings
mapTo3d = settings.mapTo3d()
progress = progress or dummyProgress
prop = DEMPropertyReader(properties)
# DEM provider
provider = settings.demProviderByLayerId(prop.layerId)
if isinstance(provider, GDALDEMProvider):
demLayer = QgsMapLayerRegistry.instance().mapLayer(prop.layerId)
layerName = demLayer.name()
else:
demLayer = None
layerName = provider.name()
# layer
layer = DEMLayer(writer, demLayer, prop)
lyr = layer.layerObject()
lyr.update({"name": layerName})
writer.writeLayer(lyr)
# material option
texture_scale = properties.get("comboBox_TextureSize", 100) / 100
transparency = properties.get("spinBox_demtransp", 0)
transp_background = properties.get("checkBox_TransparentBackground", False)
# display type
canvas_size = settings.mapSettings.outputSize()
if properties.get("radioButton_MapCanvas", False):
if texture_scale == 1:
mat = layer.materialManager.getCanvasImageIndex(
transparency, transp_background)
else:
mat = layer.materialManager.getMapImageIndex(
canvas_size.width() * texture_scale,
canvas_size.height() * texture_scale, settings.baseExtent,
transparency, transp_background)
elif properties.get("radioButton_LayerImage", False):
layerids = properties.get("layerImageIds", [])
mat = layer.materialManager.getLayerImageIndex(
layerids,
canvas_size.width() * texture_scale,
canvas_size.height() * texture_scale, settings.baseExtent,
transparency, transp_background)
elif properties.get("radioButton_ImageFile", False):
filepath = properties.get("lineEdit_ImageFile", "")
mat = layer.materialManager.getImageFileIndex(filepath, transparency,
transp_background, True)
else: #.get("radioButton_SolidColor", False)
mat = layer.materialManager.getMeshLambertIndex(
properties.get("lineEdit_Color", ""), transparency, True)
#elif properties.get("radioButton_Wireframe", False):
# block["m"] = layer.materialManager.getWireframeIndex(properties["lineEdit_Color"], transparency)
# get DEM values
dem_size = prop.demSize(settings.mapSettings.outputSize())
dem_width, dem_height = dem_size.width(), dem_size.height()
dem_values = provider.read(dem_width, dem_height, settings.baseExtent)
# DEM block
block = DEMBlock(dem_width, dem_height, dem_values, mapTo3d.planeWidth,
mapTo3d.planeHeight, 0, 0)
block.zShift(mapTo3d.verticalShift)
block.zScale(mapTo3d.multiplierZ)
block.set("m", mat)
surroundings = properties.get("checkBox_Surroundings",
False) if prop.layerId else False
if surroundings:
blocks = DEMBlocks()
blocks.appendBlock(block)
blocks.appendBlocks(
surroundingDEMBlocks(writer, layer, provider, properties,
progress))
blocks.processEdges()
blocks.write(writer)
writer.write("lyr.stats = {0};\n".format(pyobj2js(blocks.stats())))
else:
# clipping
clip_option = properties.get("checkBox_Clip", False)
if clip_option:
clip_layerId = properties.get("comboBox_ClipLayer")
clip_layer = QgsMapLayerRegistry.instance().mapLayer(
clip_layerId) if clip_layerId else None
if clip_layer:
block.setClipGeometry(
dissolvePolygonsOnCanvas(writer, clip_layer))
# sides and bottom
if properties.get("checkBox_Sides", False):
block.set("sides", True)
# frame
if properties.get("checkBox_Frame", False) and not clip_option:
block.set("frame", True)
block.write(writer)
writer.write("lyr.stats = {0};\n".format(pyobj2js(block.orig_stats)))
# materials
writer.writeMaterials(layer.materialManager)
