GSD2020_Representation + Landscape_ Rhino +Section Perspective

Representation + Landscape

Landscape Architecure Program Graduate School of Design Harvard University

Fall 2020

Rhino Section Perspectives

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Representation + Landscape

Rhino: Section Perspectives

CONTENTS

TU TO RI A L OVERVI EW

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VI EWP O RT SETTINGS

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PERSP ECTI V E U SING A CLIPPING PLANE TO SIM U LATE A SE C TION

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SECTI O N P ERSP ECTIVE S USING A CLI P P I NG P LANE

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by LCLA office + Agenda Real-time Radiation Analysis with Ladybug https://www.luiscallejas.com/MEDELLIN-The-river-that-is-not

by Alkistis Thomidou, Chryssa Koumantou & George Anagnostakis ETHINK ATHENS / TOWARDS A NEW CITY CENTER https://www.archisearch.gr/landscape/rethink-athens-towards-a-new-citycenter-giorgos-anagnostakis-chryssa-koumantou-gianmaria-socci-alkististhomidou-special-mention/

Rhino: Section Perspectives

T U TOR I A L OVERV I EW Section perspectives are useful for revealing sectional material properties and assemblies and illustrating the spatial qualities of your design. In a section perspective, the section itself is a dimensional (scaled) drawing but the perspective behind the section is not to scale. It’s important to understand the purpose of the section perspective as a means to understand the space that you are creating and put the viewer into the scene. It is critical to understand the difference between a scaled section perspective and a perspective view, which is not to scale.

To construct a section perspective in Rhino the camera view vector must be perpendicular to the section plane.

This tutorial will use three example models to illustrate techniques for perspective modeling. Please manipulate and use the techniques in the tutorial on any example.

O n l i n e Tu t o r i a l s 1. The amazing clipping plane https://www.lynda.com/Rhino-tutorials/amazingclipping-plane/482042/564067-4.html 2. Rhino 6 tutorial _ Section Perspective https://www.youtube.com/watch?v=cbFNiSQMb_c 3. Quick Sections https://visualizingarchitecture.com/quick-sections/

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2-point perspective projection Len Length : 15

Perspective projection Len Length : 35

Parallel projection Len Length : 50

Rhino: Section Perspectives

VI E WP ORT S ETTI NG S Workflow Part 1. Viewport You have options for the perspective that you use in your model, which you can change in the Properties Panel The basic workflow for setting viewport is as follows: > Viewport > Set View > Perspective or through the Properties Panel > Projection moves between Parallel, 2-point perspective and perspective (3-point perspective) Part 2. Camera Lens Length You can change the camera lens length, which will change the perspective and scale of your images. A lens with a shorter focal length will expand the perspective, which gives the appearance of more space between elements.

A larger focal length (like a telephoto lens) will compress the perspective, which gives the appearance of stacked elements. >The default is 50mm, which is the equivalent of seeing out of one eye (35 mm is how you see using both eyes) >As you make the lens shorter (moving from 50mm to 35mm to 18 mm) there will be greater distortion at the edges of the frame + > note :For a detailed description of each type of perspective, please reference: www.sketchlikeanarchitect. com/blog/what-type-of-perspective-should-you-chooseW

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Note: Save as a new named view or override the existing view.

Rhino: Section Perspectives

VI E WP ORT S ETTI NG S Workflow Part 3. Camera Position You can manually place the camera at an “eye-level” view The basic workflow for placing camera is as follows: > In the Properties panel, go to Place and choose a location for the camera > Enter X,Y,Z to specify coordinates > Enter the Z dimension for eye level height (around 5’) > Click on your groundplane (or C plane) where you want the eye level shot, then go to Z and add the height and the camera will snap to the correct height OR >Click Place in the Target section of the same window where you can select the view

Part 4. Named Views Save views for exporting rasters or 2D linework > Go to the viewport and select Set View > Named View > Save the view with a name. The view will save with your file so you can open it in the future

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Without Clipping Plane

With Clipping Plane

Flip Clipping Plane

Rhino: Section Perspectives

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P ER S P E C T I V E U SI NG A CLI PP I N G P LA N E TO SI M U LATE A S ECT I ON Workflow The ClippingPlane command creates a clipping plane object that represents a plane that will visibly clip away geometry in a specific viewport (this is similar to a clipping mask in Photoshop) > Type ‘ClippingPlane’ which will prompt you to draw a rectangle > The Clipping plane visibly trims the geometry and is manipulated using the gumball, which you can pull to hide or show more or less of the geometry

Turn on the clipping plane in the selected model views

The ClippingPlane is only active in the viewport that you create it in. To enable the clipping plane in other viewports, go to the Properties panel and click on the “Clipping Plane” tab next to “Materials” and “Objects” > Turn on the clipping plane in all model views + Note: Optional Step The ClippingPlane can be flipped to reveal your geometry the other way. To flip the direction of the clipping plane, go to the Properties panel and click on the “Clipping Plane” tab and click Flip Direction

Click to flip Clipping Plane direction

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Rhino: Section Perspectives

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S ECT I ON P E R SP ECTI V ES U SING A C LI P P I N G PLANE Workflow Part 1.

Set up the Clipping Plane where you want to take the section through your project, and flip the direction of the plane to reveal the perspective you’re interested in showing Part 2.

Place Camera and Target perpendicular to the clipping plane > Navigate to the Set View tab and right-click Place Camera and Target Part 3.

Place Camera and Target perpendicular to the clipping plane >Click on the Line you drew following the Clipping Plane normal to set the camera + Note: If the camera is facing the wrong way, simply repeat the Place Camera and Target process again, making sure that the first point is in the middle of the line, and the second point is at the end of the line > ONLY ZOOM AND PAN AFTER SETTING THE CAMERA TO ADJUST THE VIEW, DO NOT ROTATE > To Pan, Shift + Right Click, to Zoom use the PgUp and PgDown keys >Hide the layer with the Clipping Plane the layer with the Clipping Plane Normal Line

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Rhino: Section Perspectives

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S ECT I ON P E R SP ECTI V ES U SING A C LI P P I N G PLANE Workflow Part 4.

Cut a section on the clipping plane >Create a new Layer called “Section” to place your geometry in > Type Hide to hide all other objects in your workspace (note: the Hide and Show commands are useful when working with multiple geometries in the same file) >Type SelAll to select all objects that are not hidden and CTRL + click to deselect the clipping plane >Type Section and select start and end points along the clipping plane >Type Enter to end the Section command >While the section geometry is still selected, right click the new “Section” layer and click “Change Object Layer” to put the section cut onto the new layer >Export the section Cut line as vector linework by selecting the “Section” layer and exporting it + Note: THIS IS A SCALED SECTION THAT CAN BE IMPORTED INTO ILLUSTRATOR OR PHOTOSHOP. You can create a PNG Rhino rendering to layer under the section perspective in the same view, or simply use the vector linework.

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Rhino: Section Perspectives

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S ECT I ON P E R SP ECTI V ES U SING A C LI P P I N G PLANE Workflow Part 5.

Make2D Geometry in View >Go back to the Named View >Select the geometry and type Make2D >Your geometry will appear in the Top Viewport >Export your geometry as .ai + Note: Make2D almost always requires some manipulation and manual trimming

Part 6.

Export rendered base imagery as a guide >Export the base imagery as a JPEG >Option 1: _ViewCapturetoFile (the underscore matters!) to specify a custom resolution and dimensions >Option 2: Print to Destination > Image File >Change the width, height and resolution >Output type should be Raster