Theatre Design & Technology - Fall 1984 - 10

cube or plane in different orientations.
The system requires that the method of
depth measurement be memorized for
each of four orientations: 0°-90°,
45°-45°,30°-60°,15°-75°. In practice
these are very simple to construct. Anyone who uses the distance point construction for one-point perspective
knows the basic method for finding the
0°_90° and 45°-45° orientations. The
0°-90° and 45°-45° constructions interlock. The diagonals of a square in
one view are the orthogonals of the
square in another view. In a similar
manner, the 30°-60° and 15°-75° orientations interlock. Depth measurements in the 30° - 60° orientation are
usually described in texts as the measuring point method, and are the vanishing
points for the 15°-75° view. These two
sets of interlocking systems (45°- 45 0,
0°-90° and 15°-75°, 30°-60°) allow
an object to be drawn in twenty- four
different orientations. To be drawn in
perspective, an object needs to be rotated no more than 7 Y2 ° from a random
placement.
Although the restriction of vanishing points to 15 ° increments seems to be
a limitation, in practive this method of
structuring perspective has several distinct advantages over random placement of objects. First, when every axis
is separated by 15°, the drawing has a

than 8 Y2 "x II". For this size sketch the
75° vanishing point (VP) is approximated. (For a larger rendering the 60°
VP may also have to be approximated.)
To accommodate the 60° VPs the
drawing surface should be three times
the 60° cone of vision. For a thumbnail
sketch II" wide, a drawing board 33"
wide is needed. A thumbnail sketch 5"
wide can be made on a 15" wide surface.

Layout

A method of layout based on a scaled
distance from the proscenium is as
follows:
1. Layout a horizon.
2. Erect a vertical at the center. This is
34 I at Y.t" scale in this example.

3. Measure two 30° angles from the station point (SP) to horizon line (HL).

S.p.

:3

3

'3cr

c..VP.

The slafion poilll (s.p.) isjolded on fhe horizon line. The drawing will fail willI in fhe 60° cone oj
vision. The drawing surjace is wide enough fO allow bOfh fhe 30° and 60° vanishing poillls fO be
plolled on fhe horizon.

1S'

~_~ ~

j~~~~~~~~~~[~~~~~

experience that angles of less than 10°
clean
look. to
It determine
has been established
by , _ _ _ _
are
difficult
by the viewer.
For example, if the back wall of a box
setting, when viewed in the theatre or in ",,'
.S'
c.VP
'5'
30'
<;sa rendering, is turned less than 10° off a
parallel position, it appears to be placed
crooked and not on a separate axis.
The same is true in drawing. Settings
drawn on this method have a clear spaThe 15 alld 45 ° vanishing poi,lls (VP.) are also projecfed jrom fhe s.P. The 75 ° VP.,
tial look because each orientation can approximaled wifh inclined lines.
be clearly distinguished. Another advantage is that objects can be easily
back projected to plan or projected
from plan because the angles in the
15'
noorplan can be found with standard
30°-60° and 45°-45° triangles. The
beauty of this system is that it encourages freehand sketching but can also be
used with traditional top plan projections when making presentation
c.
'5'
'5°
drawings.
0

~o'

Procedure

The method described here is for
making a thumbnail sketch no larger

-

Wifh fhe 75 0 inclined lines complefe, fhe grid is readyjor skefching.

8

Theatre Design & Technology/

SITT/Fall 198-1

however, is

~



Table of Contents for the Digital Edition of Theatre Design & Technology - Fall 1984

Contents
Theatre Design & Technology - Fall 1984 - 1
Theatre Design & Technology - Fall 1984 - 2
Theatre Design & Technology - Fall 1984 - 3
Theatre Design & Technology - Fall 1984 - Contents
Theatre Design & Technology - Fall 1984 - 5
Theatre Design & Technology - Fall 1984 - 6
Theatre Design & Technology - Fall 1984 - 7
Theatre Design & Technology - Fall 1984 - 8
Theatre Design & Technology - Fall 1984 - 9
Theatre Design & Technology - Fall 1984 - 10
Theatre Design & Technology - Fall 1984 - 11
Theatre Design & Technology - Fall 1984 - 12
Theatre Design & Technology - Fall 1984 - 13
Theatre Design & Technology - Fall 1984 - 14
Theatre Design & Technology - Fall 1984 - 15
Theatre Design & Technology - Fall 1984 - 16
Theatre Design & Technology - Fall 1984 - 17
Theatre Design & Technology - Fall 1984 - 18
Theatre Design & Technology - Fall 1984 - 19
Theatre Design & Technology - Fall 1984 - 20
Theatre Design & Technology - Fall 1984 - 21
Theatre Design & Technology - Fall 1984 - 22
Theatre Design & Technology - Fall 1984 - 23
Theatre Design & Technology - Fall 1984 - 24
Theatre Design & Technology - Fall 1984 - 25
Theatre Design & Technology - Fall 1984 - 26
Theatre Design & Technology - Fall 1984 - 27
Theatre Design & Technology - Fall 1984 - 28
Theatre Design & Technology - Fall 1984 - 29
Theatre Design & Technology - Fall 1984 - 30
Theatre Design & Technology - Fall 1984 - 31
Theatre Design & Technology - Fall 1984 - 32
Theatre Design & Technology - Fall 1984 - 33
Theatre Design & Technology - Fall 1984 - 34
Theatre Design & Technology - Fall 1984 - 35
Theatre Design & Technology - Fall 1984 - 36
Theatre Design & Technology - Fall 1984 - 37
Theatre Design & Technology - Fall 1984 - 38
Theatre Design & Technology - Fall 1984 - 39
Theatre Design & Technology - Fall 1984 - 40
Theatre Design & Technology - Fall 1984 - 41
Theatre Design & Technology - Fall 1984 - 42
Theatre Design & Technology - Fall 1984 - 43
Theatre Design & Technology - Fall 1984 - 44
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