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IfcOpenShell/src/ifcblenderexport/blenderbim/bim/sheeter.py
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2020-11-02 08:28:02 +11:00

241 lines
9.7 KiB
Python

import xml.etree.ElementTree as ET
import urllib.parse
import pystache
import ntpath
import os
from shutil import copy
from xml.dom import minidom
class SheetBuilder:
def __init__(self):
self.data_dir = None
self.scale = "NTS"
def create(self, name, titleblock_name):
sheet_path = "{}sheets/{}.svg".format(self.data_dir, name)
root = ET.Element("svg")
root.attrib["xmlns"] = "http://www.w3.org/2000/svg"
root.attrib["xmlns:xlink"] = "http://www.w3.org/1999/xlink"
root.attrib["id"] = "root"
root.attrib["version"] = "1.1"
view_root = ET.parse(
os.path.join(self.data_dir, "templates", "titleblocks", titleblock_name + ".svg")
).getroot()
view_width = self.convert_to_mm(view_root.attrib.get("width"))
view_height = self.convert_to_mm(view_root.attrib.get("height"))
view = ET.SubElement(root, "g")
view.attrib["data-type"] = "titleblock"
titleblock = ET.SubElement(view, "image")
titleblock.attrib["xlink:href"] = "../templates/titleblocks/" + titleblock_name + ".svg"
titleblock.attrib["x"] = "0"
titleblock.attrib["y"] = "0"
titleblock.attrib["width"] = str(view_width)
titleblock.attrib["height"] = str(view_height)
root.attrib["width"] = "{}mm".format(view_width)
root.attrib["height"] = "{}mm".format(view_height)
root.attrib["viewBox"] = "0 0 {} {}".format(view_width, view_height)
with open(sheet_path, "w") as f:
f.write(minidom.parseString(ET.tostring(root)).toprettyxml(indent=" "))
def add_drawing(self, view_name, sheet_name):
sheet_path = os.path.join(self.data_dir, "sheets", sheet_name + ".svg")
view_path = os.path.join(self.data_dir, "diagrams", view_name + ".svg")
if not os.path.isfile(view_path):
raise FileNotFoundError
ET.register_namespace("", "http://www.w3.org/2000/svg")
ET.register_namespace("xlink", "http://www.w3.org/1999/xlink")
sheet_tree = ET.parse(sheet_path)
sheet_root = sheet_tree.getroot()
view_tree = ET.parse(view_path)
view_root = view_tree.getroot()
# The view is placed into a group with a background image element.
# Although the foreground SVG already has a background, it is duplicated
# here to accommodate browsers which do not nest images.
view = ET.SubElement(sheet_root, "g")
view.attrib["data-type"] = "drawing"
view_width = self.convert_to_mm(view_root.attrib.get("width"))
view_height = self.convert_to_mm(view_root.attrib.get("height"))
background = ET.SubElement(view, "image")
background.attrib["xlink:href"] = "../diagrams/{}.png".format(view_name)
background.attrib["x"] = "30"
background.attrib["y"] = "30"
background.attrib["width"] = str(view_width)
background.attrib["height"] = str(view_height)
foreground = ET.SubElement(view, "image")
foreground.attrib["xlink:href"] = "../diagrams/{}.svg".format(view_name)
foreground.attrib["x"] = "30"
foreground.attrib["y"] = "30"
foreground.attrib["width"] = str(view_width)
foreground.attrib["height"] = str(view_height)
self.add_view_title(30, view_height + 35, view)
sheet_tree.write(sheet_path)
def add_schedule(self, schedule_name, sheet_name):
sheet_path = os.path.join(self.data_dir, "sheets", sheet_name + ".svg")
view_path = os.path.join(self.data_dir, "schedules", schedule_name + ".svg")
ET.register_namespace("", "http://www.w3.org/2000/svg")
ET.register_namespace("xlink", "http://www.w3.org/1999/xlink")
sheet_tree = ET.parse(sheet_path)
sheet_root = sheet_tree.getroot()
view_tree = ET.parse(view_path)
view_root = view_tree.getroot()
view_width = self.convert_to_mm(view_root.attrib.get("width"))
view_height = self.convert_to_mm(view_root.attrib.get("height"))
group = ET.SubElement(sheet_root, "g")
group.attrib["data-type"] = "schedule"
foreground = ET.SubElement(group, "image")
foreground.attrib["xlink:href"] = "../schedules/{}.svg".format(schedule_name)
foreground.attrib["x"] = "30"
foreground.attrib["y"] = "30"
foreground.attrib["width"] = str(view_width)
foreground.attrib["height"] = str(view_height)
self.add_view_title(30, view_height + 35, group)
sheet_tree.write(sheet_path)
def add_view_title(self, x, y, parent):
title_tree = ET.parse(os.path.join(self.data_dir, "templates", "view-title.svg"))
title_root = title_tree.getroot()
title = ET.SubElement(parent, "image")
title.attrib["xlink:href"] = "../templates/view-title.svg"
title.attrib["x"] = str(x)
title.attrib["y"] = str(y)
title.attrib["width"] = str(self.convert_to_mm(title_root.attrib.get("width")))
title.attrib["height"] = str(self.convert_to_mm(title_root.attrib.get("height")))
def build(self, sheet_name):
os.makedirs("{}build/{}/".format(self.data_dir, sheet_name), exist_ok=True)
sheet_path = "{}sheets/{}.svg".format(self.data_dir, sheet_name)
ET.register_namespace("", "http://www.w3.org/2000/svg")
ET.register_namespace("xlink", "http://www.w3.org/1999/xlink")
tree = ET.parse(sheet_path)
root = tree.getroot()
titleblock = root.findall('{http://www.w3.org/2000/svg}g[@data-type="titleblock"]')[0]
image = titleblock.findall("{http://www.w3.org/2000/svg}image")[0]
titleblock.append(self.parse_embedded_svg(image, {"number": sheet_name, "revision": "A"}))
titleblock.remove(image)
self.group_number = 1
self.build_drawings(root.findall('{http://www.w3.org/2000/svg}g[@data-type="drawing"]'), sheet_name)
self.build_schedules(root.findall('{http://www.w3.org/2000/svg}g[@data-type="schedule"]'))
with open("{}build/{}/{}.svg".format(self.data_dir, sheet_name, sheet_name), "wb") as output:
tree.write(output)
def build_drawings(self, drawings, sheet_name):
for view in drawings:
images = view.findall("{http://www.w3.org/2000/svg}image")
background = images[0]
foreground = images[1]
view_title = images[2]
self.scale = "NTS"
# Add foreground
view.append(self.parse_embedded_svg(foreground, {}))
# Add background
background_path = "{}sheets/{}".format(self.data_dir, self.get_href(background))
copy(background_path, "{}build/{}/".format(self.data_dir, sheet_name))
# Add view title
foreground_path = self.get_href(foreground)
view.append(
self.parse_embedded_svg(
view_title,
{"no": self.group_number, "name": ntpath.basename(foreground_path)[0:-4], "scale": self.scale},
)
)
for image in images:
view.remove(image)
self.group_number += 1
def build_schedules(self, schedules):
for group in schedules:
images = group.findall("{http://www.w3.org/2000/svg}image")
schedule = images[0]
group_title = images[1]
self.scale = "NTS"
group.append(self.parse_embedded_svg(schedule, {}))
path = self.get_href(schedule)
group.append(
self.parse_embedded_svg(
group_title, {"no": self.group_number, "name": ntpath.basename(path)[0:-4], "scale": self.scale}
)
)
for image in images:
group.remove(image)
self.group_number += 1
def get_href(self, element):
return urllib.parse.unquote(element.attrib.get("{http://www.w3.org/1999/xlink}href"))
def parse_embedded_svg(self, image, data):
group = ET.Element("g")
group.attrib["transform"] = "translate({},{})".format(
self.convert_to_mm(image.attrib.get("x")), self.convert_to_mm(image.attrib.get("y"))
)
svg_path = self.get_href(image)
with open("{}sheets/{}".format(self.data_dir, svg_path), "r") as template:
embedded = ET.fromstring(pystache.render(template.read(), data))
# viewBox should not be nested
embedded.attrib["viewBox"] = ""
# TODO: This should not be in this function
self.scale = embedded.attrib.get("data-scale")
images = embedded.findall("{http://www.w3.org/2000/svg}image")
for image in images:
new_href = ntpath.basename(image.attrib.get("{http://www.w3.org/1999/xlink}href"))
image.attrib["{http://www.w3.org/1999/xlink}href"] = new_href
group.append(embedded)
return group
def convert_to_mm(self, value):
# CSS is what defines these possibilities
# https://www.w3.org/TR/SVG/refs.html#ref-css-values-3
# https://www.w3.org/TR/css-values-3/#absolute-lengths
# The relative units are not implemented. Go fish.
if "cm" in value:
return float(value[0:-2]) * 10
elif "mm" in value:
return float(value[0:-2])
elif "Q" in value:
return float(value[0:-1]) * (1 / 40) * 10
elif "in" in value:
return float(value[0:-2]) * 2.54 * 10
elif "pc" in value:
return float(value[0:-2]) * (1 / 6) * 2.54 * 10
elif "pt" in value:
return float(value[0:-2]) * (1 / 72) * 2.54 * 10
elif "px" in value:
return float(value[0:-2]) * (1 / 96) * 2.54 * 10
return float(value)
def mm_to_px(self, value):
return (value / 25.4) * 96