ARCH211 - digitaldrawing.tcaup.umich.edu · Sixth Sense Technology, MIT Media Lab •scaling...

Vectors IARCH211

SAGE prototype for the national air defense system, MIT 1955.

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The first mouse unveiled by its inventor, Doug Engelbart in 1968.

Sixth Sense Technology, MIT Media Lab

•scaling results in loss of quality •best for editing photo-like images•typically large file size

•scaling does not effect quality•best for typesetting, line drawings, and graphics •comparatively small file size

When magnified a raster image loses quality while a vector graphic stays crisp.

V e c t o rV

2x

2x

V2 V3

V1

V1 (4, 2)V2 (4, 6)V3 (10, 6)V4 (10, 2)

L1 (V1, V2)L2 (V2, V3)L3 (V3, V4)L4 (V4, V1)

L2

L4

L3L1

V4

numerical descriptioncomputational description

(X, Y) = [(2+12)/2, (4+4)/2] = (7, 4)

(2, 4) (X, Y) (12, 4)

nding a midpointgeometric manipulation

typical object snaps - found via numerical calculation

nearest point centerendpoint

perpendicular(to last point)

tangent(to last point)

midpoint

intersection quadrantequal division point

typical object snaps - imbedded numerical calculation

Perspective architectural rendering painterly tradition, skews information to mimic perception

Orthographic Projection plan, section, elevation, axonometricmeasured drawingprovides accurate information even if skewed

modes of architectural drawing

Vantage Point the position of a viewer in relationship to an object

Theoretical Cut the selection of information registered along an incision

Measure a constant sense of scale, size, and proportion

presuppositions of architectural drawing

Preston Scott Cohen

Preston Scott Cohen. Contested symmetries and other predicaments in architecture. 2001.

Stereotopic Permutations, 1993-98

Stereotopic Permutations 1993-98

Patterns for Head Start Facilities, 1996

Wu House, Burson CA, 2000

Torus House, Old Chatham NY, 1999

Tel Aviv Museum of Art, 2010