DOI Page / Citation link:
https://doi.org/10.11588/diglit.19949#0027
OF THE UP-HILL VIEW.
23
to form an inclined plane instead of a horizontal one; a
plane inclining upwards from the base line^ at some
known or supposed angle. In this case,, such an inclined
plane will meet the plane of the picture in a line above
the horizontal line : hence there will be two vanishing
lines on the paper,—one whereby to delineate objects
on the horizontal surface; the other by which to draw
those situated on the inclined plane.
The following diagram will make this clear.
In this figure (Fig. 7), B D is the base line j H H
the common horizontal or vanishing line ; C the centre
of view in that vanishing line ; L L the vanishing line
FIG. 7.
L
C1
L
H
c
H
B
D
23
to form an inclined plane instead of a horizontal one; a
plane inclining upwards from the base line^ at some
known or supposed angle. In this case,, such an inclined
plane will meet the plane of the picture in a line above
the horizontal line : hence there will be two vanishing
lines on the paper,—one whereby to delineate objects
on the horizontal surface; the other by which to draw
those situated on the inclined plane.
The following diagram will make this clear.
In this figure (Fig. 7), B D is the base line j H H
the common horizontal or vanishing line ; C the centre
of view in that vanishing line ; L L the vanishing line
FIG. 7.
L
C1
L
H
c
H
B
D