Add simple BCF library to supersede bcfplugin, with bcfxml read capability

This commit is contained in:
Dion Moult
2020-12-15 14:49:29 +11:00
parent d00da09cdc
commit 5ad6abea1a
7 changed files with 847 additions and 0 deletions
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# bcf
A simple Python implementation of BCF. The data model is described in `data.py`.
Manipulation of BCF-XML is available via `bcfxml.py` and manipulation of BCF-API
is available via `bcfapi.py`.
Currently supports BCF version 2.1.
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import os
import tempfile
import shutil
import zipfile
import logging
import bcf.data
from xmlschema import XMLSchema
from contextlib import contextmanager
cwd = os.path.dirname(os.path.realpath(__file__))
@contextmanager
def cd(newdir):
prevdir = os.getcwd()
os.chdir(os.path.expanduser(newdir))
try:
yield
finally:
os.chdir(prevdir)
class BcfXml:
def __init__(self):
self.filepath = None
self.logger = logging.getLogger("bcfxml")
self.project = bcf.data.Project()
self.topics = {}
def get_project(self, filepath=None):
if not filepath:
return self.project
zip_file = zipfile.ZipFile(filepath)
self.filepath = tempfile.mkdtemp()
zip_file.extractall(self.filepath)
data = self._read_xml("project.bcfp", "project.xsd")
self.project.project_id = data["Project"]["@ProjectId"]
self.project.name = data["Project"]["Name"]
return self.project
def edit_project(self):
pass
def save_project(self, filepath):
with cd(self.filepath):
zip_file = zipfile.ZipFile(filepath, "w", zipfile.ZIP_DEFLATED)
for root, dirs, files in os.walk("./"):
for file in files:
zip_file.write(os.path.join(root, file))
zip_file.close()
def get_version(self):
data = self._read_xml("bcf.version", "version.xsd")
return data["@VersionId"]
def get_topics(self):
self.topics = {}
topics = []
subdirs = []
for (dirpath, dirnames, filenames) in os.walk(self.filepath):
subdirs = dirnames
break
for subdir in subdirs:
self.topics[subdir] = self.get_topic(subdir)
return self.topics
def get_topic(self, guid):
if guid in self.topics:
return self.topics[guid]
data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
topic = bcf.data.Topic()
self.topics[guid] = topic
mandatory_keys = {
"guid": "@Guid",
"title": "Title",
"creation_date": "CreationDate",
"creation_author": "CreationAuthor",
}
for key, value in mandatory_keys.items():
setattr(topic, key, data["Topic"][value])
optional_keys = {
"priority": "Priority",
"index": "Index",
"labels": "Labels",
"modified_date": "ModifiedDate",
"modified_author": "ModifiedAuthor",
"due_date": "DueDate",
"assigned_to": "AssignedTo",
"stage": "Stage",
"description": "Description",
"topic_status": "TopicStatus",
"topic_type": "TopicType",
}
for key, value in optional_keys.items():
if value in data["Topic"]:
setattr(topic, key, data["Topic"][value])
if "BimSnippet" in data["Topic"]:
bim_snippet = bcf.data.BimSnippet()
keys = {
"snippet_type": "@SnippetType",
"is_external": "@IsExternal",
"reference": "Reference",
"reference_schema": "ReferenceSchema",
}
for key, value in keys.items():
if value in data["Topic"]["BimSnippet"]:
setattr(bim_snippet, key, data["Topic"]["BimSnippet"][value])
topic.bim_snippet = bim_snippet
if "DocumentReference" in data["Topic"]:
for item in data["Topic"]["DocumentReference"]:
document_reference = bcf.data.DocumentReference()
keys = {
"referenced_document": "ReferencedDocument",
"is_external": "@IsExternal",
"guid": "@Guid",
"description": "Description",
}
for key, value in keys.items():
if value in item:
setattr(document_reference, key, item[value])
topic.document_references.append(document_reference)
if "RelatedTopic" in data["Topic"]:
for item in data["Topic"]["RelatedTopic"]:
related_topic = bcf.data.RelatedTopic()
related_topic.guid = item["@Guid"]
topic.related_topics.append(related_topic)
return topic
def get_header(self, guid):
data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
def get_comments(self, guid):
comments = []
data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
if "Comment" not in data:
return comments
for item in data["Comment"]:
comment = bcf.data.Comment()
mandatory_keys = {"guid": "@Guid", "date": "Date", "author": "Author", "comment": "Comment"}
for key, value in mandatory_keys.items():
setattr(comment, key, item[value])
optional_keys = {"modified_date": "ModifiedDate", "modified_author": "ModifiedAuthor"}
for key, value in optional_keys.items():
if value in item:
setattr(comment, key, item[value])
if "Viewpoint" in item:
viewpoint = bcf.data.Viewpoint()
viewpoint.guid = item["Viewpoint"]["@Guid"]
comment.viewpoint = viewpoint
comments.append(comment)
return comments
def get_viewpoints(self, guid):
viewpoints = []
data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
if "Viewpoints" not in data:
return viewpoints
for item in data["Viewpoints"]:
viewpoints.append(self.get_viewpoint(item, guid))
return viewpoints
def get_viewpoint(self, data, topic_guid):
viewpoint = bcf.data.Viewpoint()
viewpoint.guid = data["@Guid"]
optional_keys = {"viewpoint": "Viewpoint", "snapshot": "Snapshot", "index": "Index"}
for key, value in optional_keys.items():
if value in data:
setattr(viewpoint, key, data[value])
visinfo = self._read_xml(os.path.join(topic_guid, viewpoint.viewpoint), "visinfo.xsd")
viewpoint.components = self.get_viewpoint_components(visinfo)
viewpoint.orthogonal_camera = self.get_viewpoint_orthogonal_camera(visinfo)
viewpoint.perspective_camera = self.get_viewpoint_perspective_camera(visinfo)
viewpoint.lines = self.get_viewpoint_lines(visinfo)
viewpoint.clipping_planes = self.get_viewpoint_clipping_planes(visinfo)
viewpoint.bitmaps = self.get_viewpoint_bitmaps(visinfo)
return viewpoint
def get_viewpoint_components(self, visinfo):
if "Components" not in visinfo:
return None
components = bcf.data.Components()
data = visinfo["Components"]
if "ViewSetupHints" in data:
view_setup_hints = bcf.data.ViewSetupHints()
optional_keys = {
"spaces_visible": "@SpacesVisible",
"space_boundaries_visible": "@SpaceBoundariesVisible",
"openings_visible": "@OpeningsVisible",
}
for key, value in optional_keys.items():
if value in data["ViewSetupHints"]:
setattr(view_setup_hints, key, data["ViewSetupHints"][value])
components.view_setup_hints = view_setup_hints
if "Selection" in data and "Component" in data["Selection"]:
for item in data["Selection"]["Component"]:
components.selection.append(self.get_component(item))
if "Visibility" in data:
component_visibility = bcf.data.ComponentVisibility()
if "@DefaultVisibility" in data["Visibility"]:
component_visibility.default_visibility = data["Visibility"]["@DefaultVisibility"]
if "Exceptions" in data["Visibility"] and "Component" in data["Visibility"]["Exceptions"]:
for item in data["Visibility"]["Exceptions"]["Component"]:
component_visibility.exceptions.append(self.get_component(item))
components.visibility = component_visibility
if "Coloring" in data and "Color" in data["Coloring"]:
for item in data["Coloring"]["Color"]:
color = bcf.data.Color()
color.color = item["@Color"]
for item2 in item["Component"]:
color.components.append(self.get_component(item2))
components.coloring.append(color)
return components
def get_viewpoint_orthogonal_camera(self, visinfo):
if "OrthogonalCamera" not in visinfo:
return None
camera = bcf.data.OrthogonalCamera()
data = visinfo["OrthogonalCamera"]
self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
self.set_vector(camera.camera_direction, data["CameraDirection"])
self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
camera.view_to_world_scale = data["ViewToWorldScale"]
def get_viewpoint_perspective_camera(self, visinfo):
if "PerspectiveCamera" not in visinfo:
return None
camera = bcf.data.PerspectiveCamera()
data = visinfo["PerspectiveCamera"]
self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
self.set_vector(camera.camera_direction, data["CameraDirection"])
self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
camera.field_of_view = data["FieldOfView"]
def get_viewpoint_lines(self, visinfo):
if "Lines" not in visinfo:
return []
lines = []
for item in visinfo["Lines"]["Line"]:
line = bcf.data.Line()
self.set_vector(line.start_point, item["StartPoint"])
self.set_vector(line.end_point, item["EndPoint"])
lines.append(line)
return lines
def get_viewpoint_clipping_planes(self, visinfo):
if "ClippingPlanes" not in visinfo:
return []
planes = []
for item in visinfo["ClippingPlanes"]["ClippingPlane"]:
plane = bcf.data.ClippingPlane()
self.set_vector(plane.location, item["Location"])
self.set_vector(plane.direction, item["Direction"])
planes.append(plane)
return planes
def get_viewpoint_bitmaps(self, visinfo):
if "Bitmap" not in visinfo:
return []
bitmaps = []
for item in visinfo["Bitmap"]:
bitmap = bcf.data.Bitmap()
bitmap.reference = item["Reference"]
bitmap.bitmap_type = item["Bitmap"].lower()
self.set_vector(bitmap.location, item["Location"])
self.set_vector(bitmap.normal, item["Normal"])
self.set_vector(bitmap.up, item["Up"])
bitmap.height = item["Height"]
bitmaps.append(bitmap)
return bitmaps
def set_vector(self, to_obj, from_xml):
to_obj.x = from_xml["X"]
to_obj.y = from_xml["Y"]
to_obj.z = from_xml["Z"]
def get_component(self, data):
component = bcf.data.Component()
optional_keys = {
"originating_system": "OriginatingSystem",
"authoring_tool_id": "AuthoringToolId",
"ifc_guid": "@IfcGuid",
}
for key, value in optional_keys.items():
if value in data:
setattr(component, key, data[value])
return component
def close_project(self):
shutil.rmtree(self.filepath)
def _read_xml(self, filename, xsd):
schema = XMLSchema(os.path.join(cwd, "xsd", xsd))
filepath = os.path.join(self.filepath, filename)
(data, errors) = schema.to_dict(filepath, validation="lax")
for error in errors:
self.logger.error(error)
return data
def __del__(self):
self.close_project()
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class Project:
def __init__(self):
self.project_id = ""
self.name = ""
class BimSnippet:
def __init__(self):
self.snippet_type = None
self.is_external = False
self.reference = None
self.reference_schema = None
class DocumentReference:
def __init__(self):
self.referenced_document = None
self.description = None
self.guid = None
self.is_external = False
class RelatedTopic:
def __init__(self):
self.guid = None
class Topic:
def __init__(self):
self.reference_links = []
self.title = ""
self.priority = None
self.index = None # Deprecated, stored, but ignored
self.labels = []
self.creation_date = None
self.creation_author = None
self.modified_date = None
self.modified_author = None
self.due_date = None
self.assigned_to = None
self.stage = None
self.description = None
self.bim_snippet = None
self.document_references = []
self.related_topics = []
self.topic_status = None
self.topic_type = None
self.guid = None
class Comment:
def __init__(self):
self.guid = None
self.date = None
self.author = None
self.comment = None
self.viewpoint = None
self.modified_date = None
self.modified_author = None
self.topic_guid = None # Part of BCF-API
class ViewSetupHints:
def __init__(self):
self.spaces_visible = False
self.space_boundaries_visible = False
self.openings_visible = False
class Component:
def __init__(self):
self.originating_system = None
self.authoring_tool_id = None
self.ifc_guid = None
class ComponentVisibility:
def __init__(self):
self.exceptions = []
self.default_visibility = False
class Color:
def __init__(self):
self.color = None
self.components = []
class Components:
def __init__(self):
self.view_setup_hints = None
self.selection = []
self.visibility = None
self.coloring = []
class Point:
def __init__(self):
self.x = 0
self.y = 0
self.z = 0
class Direction(Point):
pass
class OrthogonalCamera:
def __init__(self):
self.camera_view_point = Point()
self.camera_direction = Direction()
self.camera_up_vector = Direction()
self.view_to_world_scale = 1.0
class PerspectiveCamera:
def __init__(self):
self.camera_view_point = Point()
self.camera_direction = Direction()
self.camera_up_vector = Direction()
self.field_of_view = 60.0
class Line:
def __init__(self):
self.start_point = Point()
self.end_point = Point()
class ClippingPlane:
def __init__(self):
self.location = Point()
self.direction = Direction()
class Bitmap:
def __init__(self):
self.reference = "" # Only in BCF-XML
self.bitmap_data = None # Only in BCF-API
self.bitmap_type = "png" # Enum of png or jpg
self.location = Point()
self.normal = Direction()
self.up = Direction()
self.height = 1.0
class Viewpoint:
def __init__(self):
self.guid = None
self.viewpoint = None
self.snapshot = None
self.index = None
self.components = None # It's not a list, despite the plural name
self.orthogonal_camera = None
self.perspective_camera = None
self.lines = []
self.clipping_planes = []
self.bitmaps = []
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<?xml version="1.0" encoding="UTF-8"?>
<!-- Mit XMLSpy v2011 rel. 2 sp1 (http://www.altova.com) von Klaus Linhard (IABI e.V.) bearbeitet -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Markup">
<xs:complexType>
<xs:sequence>
<xs:element name="Header" type="Header" minOccurs="0"/>
<xs:element name="Topic" type="Topic"/>
<xs:element name="Comment" type="Comment" minOccurs="0" maxOccurs="unbounded"/>
<!-- ISG Jira issue BCF-9. Add support for several viewpoints and snapshots per issue -->
<xs:element name="Viewpoints" type="ViewPoint" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="Header">
<xs:sequence>
<xs:element name="File" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Filename" type="xs:string" minOccurs="0"/>
<xs:element name="Date" type="xs:dateTime" minOccurs="0"/>
<!-- Reference (URL) of the file -->
<xs:element name="Reference" type="xs:string" minOccurs="0"/>
</xs:sequence>
<xs:attributeGroup ref="FileAttributes"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
<!-- ISG Jira issue BCF-9. Add support for several viewpoints and snapshots per issue -->
<xs:complexType name="ViewPoint">
<xs:sequence>
<!-- viewpoint file (xml) -->
<xs:element name="Viewpoint" type="xs:string" minOccurs="0"/>
<!-- the snapshot png -->
<xs:element name="Snapshot" type="xs:string" minOccurs="0"/>
<!-- the viewpoint index (sort order) -->
<xs:element name="Index" type="xs:int" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="Guid" type="Guid" use="required"/>
<!-- Guid of the viewpoint -->
</xs:complexType>
<!-- BimSnippet -->
<xs:complexType name="BimSnippet">
<xs:sequence>
<!--
Name of the file in the topic folder containing the snippet or a URL.
E.G.- Expresscode containing p.e Issue, Request
// Maybe some header infos ?? // IfcEntites // Geometry
-->
<!-- Reference (name) to the snippet file -->
<xs:element name="Reference" type="xs:string"/>
<xs:element name="ReferenceSchema" type="xs:string"/>
</xs:sequence>
<xs:attribute name="SnippetType" type="xs:string" use="required"/>
<xs:attribute name="isExternal" type="xs:boolean" default="false"/>
<!-- This flag is true when the reference is a URL pointing outside of the BCF file-->
</xs:complexType>
<xs:complexType name="Topic">
<xs:sequence>
<xs:element name="ReferenceLink" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="Title" type="xs:string"/>
<xs:element name="Priority" type="Priority" minOccurs="0"/>
<!-- ISG Jira issue BCF-8 Add a way save order the topics -->
<xs:element name="Index" type="xs:int" minOccurs="0"/>
<xs:element name="Labels" type="TopicLabel" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="CreationDate" type="xs:dateTime" minOccurs="1"/>
<xs:element name="CreationAuthor" type="UserIdType" minOccurs="1"/>
<xs:element name="ModifiedDate" type="xs:dateTime" minOccurs="0"/>
<xs:element name="ModifiedAuthor" type="UserIdType" minOccurs="0"/>
<xs:element name="DueDate" type="xs:dateTime" minOccurs="0"/>
<xs:element name="AssignedTo" type="UserIdType" minOccurs="0"/>
<xs:element name="Stage" type="Stage" minOccurs="0"/>
<xs:element name="Description" type="xs:string" minOccurs="0"/>
<xs:element name="BimSnippet" type="BimSnippet" minOccurs="0"/>
<!-- Name of the file in the topic folder or url -->
<xs:element name="DocumentReference" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<!-- Name of the file in the topic folder or url -->
<xs:element name="ReferencedDocument" type="xs:string" minOccurs="0"/>
<!-- Human readable name of the document -->
<xs:element name="Description" type="xs:string" minOccurs="0"/>
</xs:sequence>
<xs:attributeGroup ref="DocumentReference"/>
</xs:complexType>
</xs:element>
<xs:element name="RelatedTopic" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:attribute name="Guid" type="Guid" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="Guid" type="Guid" use="required"/>
<xs:attribute name="TopicType" type="TopicType"/>
<xs:attribute name="TopicStatus" type="TopicStatus"/>
</xs:complexType>
<!-- Reference to a document inside of the topic folder or a url pointing to the web -->
<xs:attributeGroup name="DocumentReference">
<!-- Guid of the DocumentReference -->
<xs:attribute name="Guid" type="Guid"/>
<!-- A flag that is true when the ReferencedDocument points outside of the BCF file (a URL) -->
<xs:attribute name="isExternal" type="xs:boolean" default="false"/>
</xs:attributeGroup>
<xs:complexType name="Comment">
<xs:sequence>
<xs:element name="Date" type="xs:dateTime"/>
<xs:element name="Author" type="UserIdType"/>
<xs:element name="Comment" type="xs:string"/>
<xs:element name="Viewpoint" minOccurs="0">
<xs:complexType>
<xs:attribute name="Guid" type="Guid" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="ModifiedDate" type="xs:dateTime" minOccurs="0"/>
<xs:element name="ModifiedAuthor" type="UserIdType" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="Guid" type="Guid" use="required"/>
</xs:complexType>
<xs:simpleType name="TopicStatus">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="TopicType">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="TopicLabel">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="Priority">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="UserIdType">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="Stage">
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="Guid">
<xs:restriction base="xs:string">
<xs:pattern value="[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="IfcGuid">
<xs:restriction base="xs:string">
<xs:length value="22"/>
<xs:pattern value="[0-9,A-Z,a-z,_$]*"/>
</xs:restriction>
</xs:simpleType>
<xs:attributeGroup name="FileAttributes">
<xs:attribute name="IfcProject" type="IfcGuid"/>
<xs:attribute name="IfcSpatialStructureElement" type="IfcGuid"/>
<xs:attribute name="isExternal" type="xs:boolean" default="true"/>
</xs:attributeGroup>
</xs:schema>
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<?xml version="1.0" encoding="UTF-8"?>
<!-- Mit XMLSpy v2011 rel. 2 sp1 (http://www.altova.com) von Klaus Linhard (IABI e.V.) bearbeitet -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="ProjectExtension">
<xs:complexType>
<xs:sequence>
<xs:element name="Project" type="Project" minOccurs="0"/>
<xs:element name="ExtensionSchema" type="xs:anyURI"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="Project">
<xs:sequence>
<xs:element name="Name" type="xs:string" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="ProjectId" type="xs:string" use="required"/>
</xs:complexType>
</xs:schema>
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<?xml version="1.0" encoding="UTF-8"?>
<!-- Mit XMLSpy v2011 rel. 3 (http://www.altova.com) von Klaus Linhard (IABI e.V.) bearbeitet -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Version">
<xs:complexType>
<xs:sequence>
<xs:element name="DetailedVersion" type="xs:string" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="VersionId" type="xs:string"/>
</xs:complexType>
</xs:element>
</xs:schema>
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<?xml version="1.0" encoding="UTF-8"?>
<!-- Mit XMLSpy v2011 rel. 2 sp1 (http://www.altova.com) von Klaus Linhard (IABI e.V.) bearbeitet -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="VisualizationInfo">
<xs:annotation>
<xs:documentation>VisualizationInfo documentation</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element name="Components" type="Components" minOccurs="0"/>
<xs:element name="OrthogonalCamera" type="OrthogonalCamera" minOccurs="0"/>
<xs:element name="PerspectiveCamera" type="PerspectiveCamera" minOccurs="0"/>
<xs:element name="Lines" minOccurs="0">
<xs:complexType>
<xs:sequence>
<xs:element name="Line" type="Line" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="ClippingPlanes" minOccurs="0">
<xs:complexType>
<xs:sequence>
<xs:element name="ClippingPlane" type="ClippingPlane" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<!-- ISG Jira issue BCF-17: Add support for text in the viewpoints -->
<xs:element name="Bitmap" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Bitmap" type="BitmapFormat"/>
<!-- Name of the bitmap file in the topic folder -->
<xs:element name="Reference" type="xs:string"/>
<!-- Location of the center of the bitmap -->
<xs:element name="Location" type="Point"/>
<!-- Normal of the bitmap -->
<xs:element name="Normal" type="Direction"/>
<!-- Upvector of the bitmap -->
<xs:element name="Up" type="Direction"/>
<!-- Height of the bitmap -->
<xs:element name="Height" type="xs:double"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<!-- Guid of the viewpoint -->
<xs:attribute name="Guid" type="Guid" use="required"/>
</xs:complexType>
</xs:element>
<xs:complexType name="OrthogonalCamera">
<xs:sequence>
<xs:element name="CameraViewPoint" type="Point"/>
<xs:element name="CameraDirection" type="Direction"/>
<xs:element name="CameraUpVector" type="Direction"/>
<xs:element name="ViewToWorldScale" type="xs:double">
<xs:annotation>
<xs:documentation>view's visible size in meters</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="PerspectiveCamera">
<xs:sequence>
<xs:element name="CameraViewPoint" type="Point"/>
<xs:element name="CameraDirection" type="Direction"/>
<xs:element name="CameraUpVector" type="Direction"/>
<xs:element name="FieldOfView" type="FieldOfView">
<xs:annotation>
<xs:documentation>
It is currently limited to a value between 45 and 60 degrees.
This limitation will be dropped in the next release and viewers
should be expect values outside this range in current implementations.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Point">
<xs:sequence>
<xs:element name="X" type="xs:double"/>
<xs:element name="Y" type="xs:double"/>
<xs:element name="Z" type="xs:double"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Direction">
<xs:sequence>
<xs:element name="X" type="xs:double"/>
<xs:element name="Y" type="xs:double"/>
<xs:element name="Z" type="xs:double"/>
</xs:sequence>
</xs:complexType>
<xs:simpleType name="FieldOfView">
<xs:restriction base="xs:double">
<xs:minInclusive value="45"/>
<xs:maxInclusive value="60"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="Components">
<xs:sequence>
<xs:element name="ViewSetupHints" type="ViewSetupHints" minOccurs="0" />
<!-- Components with relevance to the viewpoint. They should be displayed highlighted or selected in a viewer -->
<xs:element name="Selection" type="ComponentSelection" minOccurs="0" />
<xs:element name="Visibility" type="ComponentVisibility" minOccurs="1" />
<xs:element name="Coloring" type="ComponentColoring" minOccurs="0" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="ViewSetupHints">
<xs:attribute name="SpacesVisible" type="xs:boolean"/>
<xs:attribute name="SpaceBoundariesVisible" type="xs:boolean"/>
<xs:attribute name="OpeningsVisible" type="xs:boolean"/>
</xs:complexType>
<xs:complexType name="ComponentSelection">
<xs:sequence>
<xs:element name="Component" type="Component" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ComponentVisibility">
<xs:sequence>
<xs:element name="Exceptions" minOccurs="0">
<!-- List Components that are different than the DefaultVisibility. E.g. if DefaultVisibility = false then list
Components that should be visible -->
<xs:complexType>
<xs:sequence>
<xs:element name="Component" type="Component" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="DefaultVisibility" type="xs:boolean"/>
</xs:complexType>
<xs:complexType name="ComponentColoring">
<xs:sequence>
<xs:element name="Color" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Component" type="Component" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute ref="Color"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Component">
<xs:sequence>
<xs:element name="OriginatingSystem" type="xs:string" minOccurs="0"/>
<xs:element name="AuthoringToolId" type="xs:string" minOccurs="0"/>
</xs:sequence>
<xs:attribute ref="IfcGuid"/>
<!-- ISG Jira Issue BCF-14 -->
</xs:complexType>
<xs:attribute name="Color">
<xs:simpleType>
<xs:restriction base="xs:normalizedString">
<!-- Should either match 3 or 4 hex bytes , e.g. "FF00FF" or "FF00FF99" -->
<xs:pattern value="[0-9,a-f,A-F]{6}([0-9,a-f,A-F]{2})?"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="IfcGuid">
<xs:simpleType>
<xs:restriction base="xs:normalizedString">
<xs:length value="22"/>
<xs:pattern value="[0-9,A-Z,a-z,_$]*"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:complexType name="Line">
<xs:sequence>
<xs:element name="StartPoint" type="Point"/>
<xs:element name="EndPoint" type="Point"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ClippingPlane">
<xs:sequence>
<xs:element name="Location" type="Point"/>
<xs:element name="Direction" type="Direction"/>
</xs:sequence>
</xs:complexType>
<!-- ISG Jira issue BCF-17: Add support for text in the viewpoints -->
<xs:simpleType name="BitmapFormat">
<xs:restriction base="xs:string">
<xs:enumeration value="PNG"/>
<xs:enumeration value="JPG"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="Guid">
<xs:restriction base="xs:string">
<xs:pattern value="[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>