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Reference files on the filer server:

/Volumes/DDE/BDE_VIAD-MATERIAL/01_VORLESUNGEN & PROJEKTE/17HS/Sem5_EmbodiedFabrication/RhinoAndGrasshopperSampleFiles

Geometry - basic building blocks

geometryexamples of manifestationsparameters
point
points
x/y/z coordinates
line
curve geometry
startpoint
  • Line
endpoint
  • Polyline
polylinesubdivision surfacesT-splinesmeshes / polygons
  • Circle
  • vertices
  • closed (y/n)
curveCV Curve
Circle, 
  • vertices
  • degree
surface
  • from points
  • from curves
  • …
polysurfacevolumes - primitives
  • vertices
  • control points
  • degree
surface geometry (NURBS)
  • surface
  • polysurface
  • f
solids
  • box
  • sphere
  • cylinder
  • …

meshes / polygons


Boundary representation (BREP)

geometric entitiestopological
pointvertex
lineedge
surfaceface

Rhino Interface

Setup:

  • Turn on Point Snap (End, Midpoint, Center, Intersection, Perpendicular, Quadrant) & Grid Snap
  • Turn on Gumball
  • Turn on shading for the perspective window (shaded or ghosted)

  • Tip: Enter or Space to enter commands


First Steps in Rhino

WhatHowVisual Aid
navigating
  • Pan (two finger swipe/right mouseclick + Shift - also Control + Shift + click and drag)
  • Zoom (pinch)
  • Rotate View (two finger swipe/right mouseclick - also Control + click and drag

selection

depending how you drag your selection window either everything touched by the selection window is selected (bottom right to top left) or only objects that are fully enclosed by the window are selected (top lect to bottom right)


create geometry

_line
_curve
_circle
_arc
_rectangle

edit 2D

_move
_copy
_rotate
_scale
_dir (flip direction)
_array


_join
_eplode
_trim
_split
_group
_ungroup

_extend
_mirror

edit with gumball

Turn on control points

Turn on gumball

  • select control points or geometry and use handles to move, rotate or scale
  • extrude: drag move handle then hold Command
  • to select contour: Command + Shift + select contour



create 3D geometry

primitives:

_pipe
_box
_sphere
_cylinder

operations:

_sweep
_loft
_rail
_revolve
_extrude

boolean operations

_BooleanUnion
_BooleanDifference
_BooleanIntersection

use a reference image_BackgroundBitmap

...


First Steps in Grasshopper

Great introduciton to Grasshopper: http://grasshopperprimer.com/

Exercise 01 - Rhino: draw line and revolve

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Commands:

  • draw line; turning on gridsnap makes things easier
  • join the line, if it is not a joined line already
  • use _fillet to create the round inner edge
  • revolve countour to create a 

Exercise 2 - Rhino: transform and extrude, using gumball

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Exercise 3 - parametric glass in Grasshopper


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