PluginTemplate

In this chapter it will explained howto install the Base of the bim2sim framework and first steps of the usage.

bim2sim is divided into a base library and plugins. For further information of the specific plugins:

TEASER, EnergyPlus, AixLib, HKESIM, LCA,

The base installation of the bim2sim framework includes a generic Base-Plugin. The Base-Plugin is a plugin, which includes generic features and structure. This plugin is used as general starting point without any third party dependencies. So it is a good starting point for development of own plugins or as test environment for debugging.

How to install?

Step by step

We will first guide you through the process how to install bim2sim base library. The installation of the plugins is described in their sections. As some requirements for core functionality of bim2sim are not available via PyPi but only via conda-forge an installation only via PyPi is sadly not possible for now. Here the packagemanager micromamba (compact version of mamba) is used.

install and setup micromamba (see installtion micromamba)
1. For Windows users who have trouble with the Powershell installation we recommend using the Git Bash variant
creating an virtual python environment
clone bim2sim GitHub repository
install bim2sim and its dependencies

We will guide you through the process now.

# create fresh python environment with conda (python 3.9 to 3.11 are supported currently)
micromamba create -n bim2sim python=3.11 -c conda-forge
# activate your environment
micromamba activate bim2sim

# clone bim2sim repository (you can also use SSH if you prefer)
# the option "--recurse-submodules" is needed to load submodules 
git clone -b development https://github.com/BIM2SIM/bim2sim.git

# install conda-forge packages (OCC not available via PyPi)
micromamba install -c conda-forge pythonocc-core=7.7.0

# change into bim2sim folder
cd bim2sim

# install pip requirements
pip install -e '.'

Now the base library installation is done. First check is to call the help method of bim2sim. When the version of bim2sim is returned, the bim2sim base libraray is functional. You can either run of these commands:

python -m bim2sim -v

bim2sim -v

To use one of the bim2sim plugins, please follow their additional install steps.

Trouble Shooting

For your installation, your system needs a C++ compiler. If you do not have C++ build tools installed anyways, please download the developer tools here: https://visualstudio.microsoft.com/de/visual-cpp-build-tools/ and install desktop development tools.

If you get in trouble with building a wheel for sparse-dot-topn-for-blocks, this solution may help: ParticularMiner/sparse_dot_topn_for_blocks#3 (comment).

For more plugin-specific trouble shooting please have a look at the individual installation guides for the plugins.

Docker

Docker images for bim2sim are currently available through our private registry. However, you can build these images yourself using the provided Dockerfiles. We offer images for multiple Python versions, each based on micromamba to install PythonOCC, a required package not available through PyPI.

For each Python version, we provide two types of images:

A base image with essential dependencies
An extended image that includes pre-installed EnergyPlus for running EP simulations

Regarding Dymola, we can’t publicly distribute an image due to licensing restrictions. However, you’re welcome to build your own using our Dockerfile as a starting point.

We will release the images on DockerHub soon to make them accessible for everyone (see issuue 452).

Test installation

If all worked well you should be able to start using bim2sim. Try

python -m bim2sim -h

(be aware your working directory should be your_git_bim2sim_repo) It this command returns the help documentation, please make your first steps with bim2sim.

How to create a project?

You can either use bim2sim directly from console or include it in your scripts.

Console

Start your favorite console and type

$ python -m bim2sim -h

to see all available commands.

Now it’s time to create your first project with bim2sim.

$ python bim2sim project create path/to/project -s teaser

will create a new project folder at path/to/project and set it up for a simulation with TEASER (see plugins for more options). Now open the newly created project folder and put the *.ifc file you wish to process into the subfolder ifc. Alternatively you could add the option -i path/to/ifc to the command above, which would copy the ifc for you.

If all is set up correctly, run

$ python bim2sim load path/to/project

to load and run an existing project. Then follow the instructions from your console. When you are done, you can inspect the results from the /results folder of your project.

Script

To include bim2sim in your scripts start with something like this:

from bim2sim import Project
from bim2sim.log import default_logging_setup

default_logging_setup()  # call this first or do a custom logging setup

project_path = 'path/to/project'
ifc_path = 'path/to/ifc'

if Project.is_project_folder(project_path):
    # load project if existing
    project = Project(project_path)
else:
    # else create a new one
    project = Project.create(project_path, ifc_path, 'teaser')

now you have multiple options to run the project and handle it’s decisions:

# Option 1: handle decisions manually
for bunch in project.run():
    for decision in bunch:
        print(decision.question)
        decision.value = 42  # your logic goes here

# Option 2: handle decisions via console input
from bim2sim import run_project, ConsoleDecisionHandler
run_project(project, ConsoleDecisionHandler())

# Option 3: write your own DecisionHandler and use it as in Option 2

Details about DecisionHandlers.

Structure of the plugin template

The following figure shows the structure of the plugin template. Here you see which tasks are used and how they are combined.

        ---
title: plugin Template
---
flowchart TB
    
subgraph taskLoadIFC["task LoadIFC"]
 subgraph "" 

  tLoadIFC["bim2sim > tasks > common >  
 LoadIFC"]
  extLoadIFC(" Load all IFC files from PROJECT. " )
 end

stateLoadIFC[("state
 (reads/touches)")]
    
tLoadIFC -- ifc_files --> stateLoadIFC

end
    
subgraph taskCheckIfc["task CheckIfc"]
 subgraph "" 

  tCheckIfc["bim2sim > tasks > common >  
 CheckIfc"]
  extCheckIfc("  Check an IFC file, for a number of conditions
(missing information, incorrect information, etc)
that could lead on future tasks to fatal errors. " )
 end

stateCheckIfc[("state
 (reads/touches)")]
    
stateCheckIfc -- ifc_files --> tCheckIfc
direction RL
end
    
subgraph taskCreateElements["task CreateElements"]
 subgraph "" 

  tCreateElements["bim2sim > tasks > common >  
 CreateElements"]
  extCreateElements(" Create bim2sim elements based on information in
IFC. " )
 end

stateCreateElements[("state
 (reads/touches)")]
    
stateCreateElements -- ifc_files --> tCreateElements

tCreateElements -- elements, ifc_files --> stateCreateElements

end
    
subgraph taskFilterTZ["task FilterTZ"]
 subgraph "" 

  tFilterTZ["bim2sim > tasks > bps >  
 FilterTZ"]
  extFilterTZ(" Filters the thermal zones for later usage and
stores them in state. " )
 end

stateFilterTZ[("state
 (reads/touches)")]
    
stateFilterTZ -- elements --> tFilterTZ

tFilterTZ -- tz_elements --> stateFilterTZ

end
    
subgraph taskCreateSpaceBoundaries["task CreateSpaceBoundaries"]
 subgraph "" 

  tCreateSpaceBoundaries["bim2sim > tasks > bps >  
 CreateSpaceBoundaries"]
  extCreateSpaceBoundaries(" Create space boundary elements from ifc. " )
 end

stateCreateSpaceBoundaries[("state
 (reads/touches)")]
    
stateCreateSpaceBoundaries -- ifc_files, elements --> tCreateSpaceBoundaries

tCreateSpaceBoundaries -- space_boundaries --> stateCreateSpaceBoundaries

end
    
subgraph taskEnrichUseConditions["task EnrichUseConditions"]
 subgraph "" 

  tEnrichUseConditions["bim2sim > tasks > bps >  
 EnrichUseConditions"]
  extEnrichUseConditions(" Enriches Use Conditions of thermal zones based on
decisions and translation of zone names. " )
 end

stateEnrichUseConditions[("state
 (reads/touches)")]
    
stateEnrichUseConditions -- tz_elements --> tEnrichUseConditions

tEnrichUseConditions -- enriched_tz --> stateEnrichUseConditions

end
    
subgraph taskBindStoreys["task BindStoreys"]
 subgraph "" 

  tBindStoreys["bim2sim > tasks > common >  
 BindStoreys"]
  extBindStoreys(" None. " )
 end

stateBindStoreys[("state
 (reads/touches)")]
    
stateBindStoreys -- elements --> tBindStoreys

tBindStoreys -- elements --> stateBindStoreys

end
    
subgraph taskWeather["task Weather"]
 subgraph "" 

  tWeather["bim2sim > tasks > common >  
 Weather"]
  extWeather(" Task to get the weather file for later simulation. " )
 end

stateWeather[("state
 (reads/touches)")]
    
stateWeather -- elements --> tWeather

tWeather -- weather_file --> stateWeather

end
    taskLoadIFC --> taskCheckIfc 
taskCheckIfc --> taskCreateElements 
taskCreateElements --> taskFilterTZ 
taskFilterTZ --> taskCreateSpaceBoundaries 
taskCreateSpaceBoundaries --> taskEnrichUseConditions 
taskEnrichUseConditions --> taskBindStoreys 
taskBindStoreys --> taskWeather

This figure is generated by the script template_mermaid.py (see Visualization of bim2sim plugin structure).

Examples

Please have also a look at bim2sim/examples which provide you some runnable examples for PluginTEASER, PluginEnergyPlus and PluginLCA.

PluginTemplate

How to install?

Step by step

Trouble Shooting

Docker

Test installation

How to create a project?

Console

Script

Structure of the plugin template

Examples

How to load an IFC file?

How to configure my project?

Simulation settings

Configuration file

Default tasks

Additional templates

How to run the project?

How to run the simulation?

How to analyze the project?

What kind of results exist?

What programs/tools to use for further analysis?