20080114
ASSIGNMENT (SPAN)
1. ProtoForm
In a first exercise we address the subject of topology and practice the craft of nurb modeling. The result of the exercise will be a ProtoForm expressed as a surface model and 3D print.
The morphological study is guided by the interest in spatial relations and surface continuity. From a sequence of geometric operations the ProtoForm emerges. Its surface geometry is subject to successive articulation and optimization. The form generation is guided be these minimal requirements:
- One continuous surface envelopes two primary spaces of different size (phase 1)
- A series of secondary spaces (n=3-5) continues the transitional logic (phase 2)
Look for spatial and topological qualities. How does one space transition to the next? What are the neighboring conditions? Ignore scale and measurements, ground, orientation, beginning and end. The focus is on the spatial moment and its geometric articulation.
Familiarize yourself with the fundamentals of nurb-based modeling. While testing various surface tools focus on the parent-child relations CV-curve and curve-surface. The hierarchical relations between generating curves and surface expressions remain intact throughout the modeling process. History is kept.
Focus on nurb specific modeling techniques. A process of rebuilding surface constellations as continua is privileged over the additive process of stitching. Consider working from geometric primitives (1) in a process of deformation (2) and rebuilding of surfaces (3)
Keep track of CV- and isoparm count and optimize the surface resolution (4). Greater curvature calls for higher resolution, lower curvature for lower resolution - an economy of geometric means emerges. The relation of surface geometry to surface behavior is crucial. Do not over-determine the surface - trust in the inherent ‘intelligence’ of the curve.
Generate a vast field of variation - Probe Space – and select from it a few iterations to be further optimized. Identify spatial qualities, establish topological families and derive from the genealogy a taxonomy of form. Document the process.
Pay attention to detail, avoid self intersecting surfaces and generate ‘clean’ geometries. Consider nurb-based modeling as a generative sculpting process and a craft.
- From ProtoForm wire frame geometry derive a set of descriptive and analytical drawings.
- From one favorite ProtoForm prepare a 3-D print file (offset surface, make airtight)
Read
Stephen Barr: What is Topology?
Resources
SFB 230:Topoogie Workshop, Stuttgart 1994
Barr_topology.pdf
Francis/index.htm
www.miqel.com/fractals_math_patterns/visual-math-minimal-surfaces.html
(1) (2) (3) (4) Maya tools as presented during class
.: Jonas 5:00 PM
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