Towards the Representation of Virtual Gymnasia Based On Multi-dimensional Information Integration - Advances in Image and Graphics Technologies - page 251

Note that when the building the plan model, two measures are taken to considera-
tion in order to ensure that every seat has as more pixels as possible: (1) the large
football gymnasium is only one layer by design for simplicity where it is usually two
layered; (2) the geometric sizes of the seats are augmented to its proper extent.

2.2 The Modeling of the Space Elements

The space elements of the football gymnasium, such as seats, aisles, circular runaway,
court, stand, goals, midline and borders, should be respectively modeled as the identi-
fiable objects. It focuses on the modeling of the stand, especially its seats.
The space elements of the football gymnasium such as seats, aisles, circular runa-
way, court, stand, goals, midline and borders should be respectively modeled as the
identifiable objects. It focuses on the modeling of the stand, especially its seats.
2.2.1 The Model of Seats
Seats are the most important space elements for the ticket-booking systems; therefore
the modelers usually pay the most attention their arrangements. The seats in the plan
model and the stealth model must be mapped correctly; else many errors will be
caused when performing the multi-dimensional information integration of virtual
gymnasia. Thus, special attentions should be paid to the distribution model of the
seats, the coding rules for the seats, the generation algorithms for the seats and the
identification algorithms for the seats.

1 The distribution model of the seats
There are so many seats in the large virtual gymnasium that it will be a time-
consuming, tedious and error-prone job to generate them manually. It is thus
necessary to build the seats distribution model for the virtual gymnasium. A polar
coordinate system can be used to represent the seats distribution considering the shape
of the virtual gymnasium. It originates at the center point of the court as well as the
horizontal and vertical positive axis point to the east and the north respectively.
2 The coding rules for the seats
To identify every seat, the coding rules for the seats are designed (Table 1). Each
seat is assigned a unique code with 7 decimal bits and each seat code can be translated
into the corresponding seat. There is a bidirectional map. The code is divided into 4
sections which stand for the number of the area, the sub-area, the row and the column
respectively. For example, the seat code, 2051107, represents the seat which lies in
the 11th row, the 7th column of the No.5 in the south sub-area.

Table 1. Coding rules for the seats

Codes( from
left to right)

Bit 1 Bits 2-3 Bits 4-5 Bits 6-7

The number
of the sub-
area

The num-
ber of the
column

The number
of the area

The number
of the row

meanings

1-east,2-
south,3-west,
4-north

01-08
(clock
wise)

01-08
(clock wise)

01-20
(radiation)

remark