3D Models, Animations,
and Virtual Reality Files--Draft Visuals
DDA: 2500 residential units /
Presented in Council Chambers, City
Hall, April 27, 2004
The animation below emphasizes
ONE new view:
all building footprints extruded according to heights currently available
from the City of Ann Arbor Planning Department.
are not available, a height of 3 stories was assigned arbitrarily, rather
than leaving the height at 0 stories.
heights are converted to feet assuming a value of 12.5 feet per story (conversion
to work appropriately with the software). Eventually, more precise
measurements of height in feet will be needed.
are buildings within the floodway in the existing pattern.
districts are noted in a shade of gray darker than the rest of the core
of Michigan buildings are noted in a shade of gray lighter than the rest
of the core.
involving map accuracy and measurement issues are in progress.
YELLOW BUILDINGS ARE ON
VACANT OR SURFACE PARKING LOTS;
BLUE BUILDINGS ARE ON HURON
STREET (BUILT OVER EXISTING BUILDINGS, PERHAPS)
RED ARE INFILL ON LIBERTY,
ASHLEY, FIRST, SOUTH MAIN (AND NORTH MAIN, OFF MAP)--BUILT OVER EXISTING
from consideration all parcels
in a current
floodway of Allen's Creek
centroid lies in the floodplain of Allen's Creek
containing a place of worship
as public lands of the University of Michigan, and most others, as well
existing parking structures
is assigned a height of 12.5 feet
Ann Arbor contour files, with contour interval of 5 feet (spacing between
successive contours is 5 feet), were used to generate a Triangulated Irregular
Network to represent the topographic surface. The buildings, roads,
and so forth were then draped over this topographic surface.
was set in the south at a height of 42.28 degrees, simulating the position
of the sun in the sky at noon in equinox conditions at the latitude of
Ann Arbor. This setting creates lighting of the buildings; it does
not create shadows of the buildings on the ground (that is a separate process
for the future).
these constraints, 5,000,000 new square feet are added as follows:
style of plan, zoning follows spatial pattern of buildout.
point towers erected on lands categorized as "vacant or surface parking."
Each tower has a 90 foot by 90 foot floor plate.Where suitable, they are
erected on a three story platform. The tower heights are 9,
12, and 15 stories; distances between adjacent towers on the same parcel
are 50, 75, and 100 feet depending on height (9, 12, and 15 stories respectively).
Where possible (according to spacing requirements), taller towers are erected
at lower elevations.
are erected along Huron Street at heights of 9, 12, and 15 stories.
The position is arbitrary.
Division Street (to the right on the models) the front setbacks are 20
feet; west of Division Street front setbacks are 0 feet. These selections
are in keeping with the present front setback pattern of buildings already
present on Huron. The goal is to keep a uniform, rather than a staggered,
appearance in front setbacks (consistent with a "Grand Boulevard" approach).
are 40 feet; side setbacks are 10 feet.
story setbacks beyond the third floor are 20 feet in structures west of
and lateral information:
story setbacks of 20 feet beyond the third story (except on a few small
parcels that have only three story buildings)
foot rear setbacks, 10 foot side setbacks, and 0 foot front setbacks.
and vertical information:
Street may rise to a total height of 8 stories (including the three story
platform) with the upper stories set back 20 feet from the three story
and Ashley Streets may rise to a total of 4 or 6 stories (50/50), with
upper story setbacks of 20 feet above the third floor, arbitrarily placed
Main, out of the picture, rise to a height of 6 stories and have 20 foot
setbacks from the road. Building footprint is placed on the parcel
in accordance with the golden ratio.
GRAYSCALE IMAGE, BELOW, EMPHASIZES
THE MASSING OF STRUCTURES
Virtual reality files with
navigational paths, lower left corner of Cosmo Player, were created to
show fly-throughs with navigational paths consistent from one model to
the next (download and install Cosmo Player in your browser): There
are a number navigational viewpoints predefined in Cosmo Player for ease
in navigation (or fly through at your own risk!). In addition, predefined
viewpoints enable comparison of identical views under different buildout
scenarios. The set of animations below corresponds to each of the
two scenes, existing, and tall, viewed in that order from each of the four
viewpoints. Transitional frames were inserted so that the viewer
might be able to see the new replacing the old.
Links to VR
Animations made from some VR
Modeling work donated by S.
Solstice: An Electronic Journal of Geography and Mathematics,
Institute of Mathematical Geography, Ann Arbor, Michigan.
Volume XV, Number 1.