GSD2020_Representation + Landscape_ Rhino +Ladybug Shadow Analysis

Representation + Landscape

Landscape Architecure Program Graduate School of Design Harvard University

Fall 2020

Rhino + Ladybug Shadow Analysis

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Representation + Landscape

Rhino + Ladybug : Shadow Analysis

CONTENTS

I n tro duction

page 0 5

In stall Ladybu g fo r Grasshopper

page 0 7

Sh adow Range An alysis

page 0 9

Shadow Range O utp ut

page 1 4

E xp o rt and V isualization

page 1 6

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by mostaphaRoudsari Real-time Radiation Analysis with Ladybug http://hydrashare.github.io/hydra/viewer?owner=mostaph aRoudsari&fork=hydra_1&id=Real-time_Radiation_Analysis_with_Ladybug&slide=1&scale=3.0314330047719364&offs et=-313.58860724140544,-851.4367011974796

by mostaphaRoudsari Mapping annual data on sun path http://hydrashare.github.io/hydra/viewer?owner=mostapha Roudsari&fork=hydra_1&id=Mapping_annual_data_on_sun_ path&slide=1&scale=1&offset=0,0

Rhino + Ladybug : Shadow Analysis

I n t ro d u c t i o n What is Ladybug? Ladybug imports standard EnergyPlus Weather files (.EPW) into Grasshopper and Dynamo. It provides a variety of 2D and 3D interactive climate graphics that support the decision-making process during the early stages of design. Ladybug also supports the evaluation of initial design options through solar radiation studies, view analyses, sunlight-hours modeling, and more. Integration with visual programming environments allows instantaneous feedback on design modifications and a high degree of customization.

Key features: Sunpath Graphics – Produce meaningful solar diagrams.

Shadow Studies – Understand where the sun is shining.

Climate Data Plots – Interpret data through a variety of 2d and 3d charts.

Radiation Studies – Quickly quantify solar energy falling on your geometry.

O n l i n e Tu t o r i a l s 1. Intro to Ladybug plugin https://www.lynda.com/Rhino-tutorials/Intro-Ladybug-plugin/599608/669582-4.html 2. Ladybug Tools Learning Resource https://www.ladybug.tools/resource.html 3. Ladybug Examples https://hydrashare.github.io/ hydra/?keywords=LBExampleFiles

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Grasshopper Ladybug UI

Once you have followed the installation instructions, you can verify that your installation is correct by opening Grasshopper and dragging/dropping the “HB Config� component onto the canvas. By connecting the outputs to panels, you can see where each of the simulation engines and resources have been installed:

Rhino + Ladybug : Shadow Analysis

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I n s ta l l La d yb ug fo r G rassh o p p er Workflow The basic workflow for installing Ladybug is as follows: > Go to Ladybug Tools website and find the download link for Grasshopper. or Directly download from: https://www.food4rhino.com/app/ ladybug-tools >Find and download the version compatible with your system >Use the link in below to install by following the instruction for Windows and Mac: https://github.com/ladybug-tools/lbt-grasshopper/ wiki

+ > note :If you are looking for a faster installation with fewer steps, Ladybug Tools is selling single-click executable installers, which are highly recommended when installing Ladybug Tools on multiple computers, such as those managed by an IT department.

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1. Open the Shadow Range Analysis Grasshopper Script

Step 1. Go to EnergyPlus > Weather Data

Step 4. Right click and copy link address

Step 2. Search Site Location

Step 3. Select .epw file

Step 5. Paste the url to the panel box in gh

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S h a d o w R a n ge An alysis Step 1 : Environment Data Settings

Workflow The basic workflow for environment setting is as follows: > Open Shadow Range Analysis.gh with Grasshopper in Rhino.

(Option 1) >Check current weather data resource on the left side of the script. (url link inside of the panel) >Update the weather data by going to the website

Step 1. Connect ‘File Path’ to ‘importlocation’

link in below and download the .epw file of the site analysis location.

Link: https://www.energyplus.net/weather >Copy the selected epw file link address and paste to override the previous url in Grasshopper panel. or (Option 2) >Connect ‘File Path’ component with ‘importloaction’ directly. >Download the weather data .epw to your local folder and import the data by right click > Select one existing file

Step 2. Import selected epw file

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S h a d o w R a n g e An alysis Step 2 : Shadow Range Generation

Workflow The basic workflow for environment setting is as follows: > Open Shadow Range Analysis.gh with Grasshopper in Rhino.

Part 1. Site Selection >Select one or multiple Breps for casting shadow >Select one surface in the model as test ground Part 2. Shadow Range Generation >Double Click the Toggle button to ‘True’ >Switch to Rhino viewport to check the generated shadow.

Rhino + Ladybug : Shadow Analysis

S h a d o w R a n ge An alysis Step 2 : Shadow Range Generation

Step 1. Double click here to toggle Boolean state

Step 2. Go to viewport to check the generated shadow range

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S h a d o w R a n g e An alysis Step 3 : Adjust Date and Hours

Counts

Month and Day Input

Interval

Start Hour Note: The example represents the shdaow simulation time is from 10 am to 12pm.

Rhino + Ladybug : Shadow Analysis

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S h a d o w R a n ge An alysis Step 3 : Adjust Date and Hours

Single Hour

Half Day

Full Day

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S h a d o w R a n g e O utp u t Step 4 : Adjust Shadow Range Accuracy

Generate shadow with grid size of 4

Generate shadow with grid size of 1

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S h a d o w R a n ge O utp u t Step 5 : Bake Geometry and Export

Type ‘1’ in the panel and connect it to bakeIt

Go to Rhino layers and find the new layer create by the script> Turn on the layer

Switch viewport to check the baked shadow range and export as .ai or .pdf to edit.

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Ex p o r t a n d Visualization Step 1 : Export selected vector work to Illustrator

Step 1. Select Shadow Range vector work + building outline >> Illustrator

Step 2. Editing layers base on the legend generated by shadow range analysis

Rhino + Ladybug : Shadow Analysis

Exp o r t a n d V i su alization Step 2 : Export as .gif or .Jpg series

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