Week 3 - Intro to Grasshopper - Controllers 124b 2014 Summer
Course	124b
Date	2014/07/09
Learning Objectives	This week, we'll be covering basic parametric workflows and modeling methods. We'll then take a look at creating Grasshopper definitions using the interface and components, moving to and from Rhino and controlling data flow.
Agenda	Explicit history Grasshopper definitions data flow components wire types Interface Widgets panels sliders buttons and boolean toggles Data types parameters vs components geometric non-geometric
Uses Tool(s)

Grasshoppper and Rhino may be thought of as seperate yet interacting worlds: Grasshopper uses the Rhino display window to preview geometric data, but transporting information between rhino and grasshopper must be done explicitly.

Lecture: Interface and Workflow

• What is a Grasshopper definition?
  • components,containers
  • wire types, innies/outies,
  • data flow - left to right, hidden wires, showing/hiding components
  • script legibility and organization, grouping/labeling
• Using the Grasshopper interface
  • finding a component, interface organization
  • panels, sliders and buttons
• Data types
  • parameters/components
  • Geometric: points/vectors, curves/polylines, surfaces/breps
  • Non Geometric: bool, int, number, string, color, domain, data
• Creating a definition
  • point, curve and surface creation.
  • moving/manipulating objects
  • dealing with curves: eval curve, parameter space
  • dealing with surfaces: lofting, extruding, deconstruct brep, divide surface
• Moving in and out of Grasshopper
  • baking, assigning single/multiple values, internalizing data

Exercise

Make a Kayak

Assignment

Using the model created in week 2, create a grasshopper script that approximates or changes part of the building massing.

Please submit the final Grasshopper file (.gh or .ghx) and a Rhino file with baked geometry (.3dm, Rhino5 or earlier) to dropbox by next Monday at midnight.

Additional Help / Links

• Grasshopper download
• Grasshopper Primer