Vector Operations in Grasshopper

Transcription

1 AALBORG UNIVERSITY BSc Matematik: Struktur og form Module coordinator: Prof. Martin RAUSSEN Vector Operations in Grasshopper Lecturer: Dario PARIGI Associate Professor Department of Civil Engineering Teaching assistants for Grasshopper Mads BRATH Rasmus SKOV image courtesy of ROK architects

2 12:30 13:00 PART 1 Introduction to Grasshopper Parametric modeling introduction Rhino & Grasshopper interface 13:00 to 13:30 PART 2 Vector operations in Grasshopper Vector operations in Grasshopper Intro to exercise

3 Parametric design allows designers to overcome the limitations of traditional CAD software tools, reaching a level of complexity and control which is beyond the human manual ability (A. Tedeschi) image courtesy of ROK architects

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5 Design efficient (and beautiful) structural form Rhinovault- designing funicular shapes in Rhino - image courtesy of Block research group

6 Handle interactively complex geometries Rhinovault- designing funicular shapes in Rhino - image courtesy of Block research group

7 interactivity / real time control of 2d and 3d geometries / evaluation of performance

8 Lectures will start with a link to the mathematical content and extend towards its relevance in architectural design, which will be evident in particular in the miniprojects. The content lecture will revolve around the skills that will be required to deal with the miniprojects MP1 MP2 MP3 MP4

9 Parametric software enables: to rigorously handle complex geometry to generate effortlessly potentially infinite design variations to test the design variations against various performance criteria (structural, acoustic, light intake, energy,etc...) You can compare for example the structural performance of multiple design solutions in real-time it is a tool that helps making informed decisions during the design process

10 PARAMETRIC DESIGN In a parametric design environment you can define the meaningful geometric relations by means of parameters Three hinged-arch Parameters Rise arch 2 (Top chord) Rise arch 2 (Bottom chord) Key height Rise arch 1 (Top chord) Centering

11 PARAMETRIC DESIGN In a parametric design environment you can define the meaningful geometric relations by means of parameters Three hinged-arch Parameters Rise arch 2 (Top chord) Rise arch 2 (Bottom chord) Key height Rise arch 1 (Top chord) Centering As a consequence you can generate almost effortlessly many design alternatives

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13 Waterloo station- London Grimshaw Architects

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15 Parametric modeling is much more than a tool that speeds up your job, as it also changes the way you approach design issues By testing your solution over multiple performance criteria you can reduce arbitrariness and make informed design decisions in the initial, exploratory design process

16 Conventional CAD applications either operate at a very low semantic level (lines, arcs and circles) or present a higher level, but predefined, semantic (walls, windows and doors) The low semantic approach is very general, it does not constrain expression, but captures little meaning. It is fine as a substitute for a hand drafting (e.g. Autocad) The higher, but predefined, semantics approach can be extremely useful and productive if one is working within a design or engineering discipline with wellestablished conventions, and with agreed components and inter-components relationships (e.g. Revit)

17 These existing applications are a reasonable response to conventional notion of design, with established architectural semantics. [ ] the problem, which is widely recognized, it that this approach treats architecture and construction as a bounded or closed domain, which can be sufficiently described by a finite set of application entities and operations. Very conservative force that reinforces conventions

18 Are these existing solutions useful in the exploratory design process? The one based on primitive shapes is insufficient, the other based on construction conventions as walls windows and doors unnecessarily forces the designer to think in a specific and detailed way about the design before he has established the design concept or overall configuration or form. Geometric relationships and their parametric modifications Architecture is fundamentally about relationships. Many of those relationships are geometric in nature or find a geometric expression Smart Geometry Group A parametric definition embodies decisions about chosen relationships and defers computation of precise values (and in some cases structure) that depend on the relationships. Shifts designer s focus on relations and meaning rather than objects by themselves

19 Linking parametric design with performance evaluation Admits rapid change of design dimensions. Enhance search for designs better adapted to context Facilitate discovery of new forms and kinds of form-making Can be the basis for collaboration between architects and engineers J. Coenders

20 GRASSHOPPER PARAMETRIC PLUGIN FOR RHINO Allows to define relations between geometries rather than geometric entities alone Components can either collect DATA or perform ACTIONS Components accept INPUTS on the left hand side and pass OUTPUTS on the right hand side

21 Acyclic directed graph A graph model is a propagation-based systems made by a collection of instances, each of which is determined by assigning values to the variables in the graph. Interpretation of a model as a typically infinite set of instances, each determined by a particular selection of values for the model s independent variables.

22 Nuova Fiera Exihibition Centre by von Gerkan, Marg and Partners Architects Paula Stongum and Andrea Louise Brøndsted, 2012

23 Wohlen High School, S. Calatrava report by A. Z. Djebbara, 2014

24 Savill Building, Buro Happold report by Louise Juelsgaard, 2012

25 The advantage of using GH is that it helps me think about what I am doing. The disadvantage is that it forces me to so think Nothing can be created in a parametric system for which the designer has not explicitly externalized the relevant and constructive structure May require additional effort

26 Opportunities for parametric design in building industry Better control and management of data, information, knowledge and complexity Better decisions and more flexibility with more information early in the process More information available More learning from the feedback from the available additional information. Aiding automated manufacturing and assembly Platform to share data among different professionals

27 Rhino & Grasshopper interface

28 Use Panel and Param viewer to constantly check the output and see how the data is organized Display various options are possible, most meaningful is whether you prefer to draw icons or to see the name in the component double click on the canvas+ name of the component to find components ctrl+alt+ click on a component to see where is located in the tabs above preview on/off (right click or menu Solution) enable on/off (right click or menu Solution) group (ctrl+g) scribble to take notes