DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.19575#0167
152 PER
and that on the left hand, on the left hand on the fame point 5
and that which is juft before, in the middle of it.
5. Let thofe lines which are, in the object, equidiftant to the
returning line, be drawn in the fcenograghic figure, from that
point found in the horizon.
6. In fetting off the altitude of columns, pedeftals, and the
like, meafure the height from the bafe line upward, in the front
or foreright fide ; and a vifual ray down that point in the front
fhal! limit the altitude of the column or pillar, all the way behind
the foreright fide, or orthographic appearance, even to the vifual
point.
This rule you muft obferve in all figures, as well where there
is a front or foreright fide, as where there is none.
7. In delineating ovals, circles, arches, croffes, fpirals, and
crofs arches, or any other figure in the roof of any room, firft
draw ichnographically, and fo, with perpendiculars from the moffc
eminent points thereof, carry it up into the cieling ; from which
feveral points carry on the figure.
8. The center, in any fcenographic regular figure, is found
by drawing crofs lines from oppofite angles; for the point where
the diagonals crofs is the center.
9. A ground plane of fquares is alike, both above and below
the horizontal line ; only the more it is difiant above or beneath;
the horizon, the fquares will be fo much the larger or wider.
10. In drawing a Perfpeclive figure, where many lines come
together, you may, for the directing of your eye, draw the dia-
gonals in red, the vifual lines in black, the perpendiculars in
green, or other different colour, from that which you intend the
figure mall be of.
J1. Having confidered the height, diftance, and pofition of
the figure, and drawn it accordingly, with fide or angle againff
the bafe ; raife perpendiculars from the feveral angles or defigned
points from the figure to the bafe, and transfer the length of each
perpendicular, from the place where it touches the bafe, to the
bafe on the fide oppofite to the point of diflance ; fo will the dia-
jnetrais drawn to the perpendiculars in the bafe, by interfeclion
with the diagonals, drawn to the feveral transferred diftances,
give the angles of the figures ; and fo lines drawn from point to
point will circumfcribe the fcenographic figure.
12. If in a landfcape there be any ftanding waters, as rivers,
ponds, and the like; place the horizontal line level with the far-
t'left fight or appearance of it.
13. If there be any houfes or the like in the picture, confider
their pofition, that you may find from what point in the horizon-
tal lines to draw the front and fides thereof.
74. In defcribing things at a great diflance, obferve the pro-
portion
and that on the left hand, on the left hand on the fame point 5
and that which is juft before, in the middle of it.
5. Let thofe lines which are, in the object, equidiftant to the
returning line, be drawn in the fcenograghic figure, from that
point found in the horizon.
6. In fetting off the altitude of columns, pedeftals, and the
like, meafure the height from the bafe line upward, in the front
or foreright fide ; and a vifual ray down that point in the front
fhal! limit the altitude of the column or pillar, all the way behind
the foreright fide, or orthographic appearance, even to the vifual
point.
This rule you muft obferve in all figures, as well where there
is a front or foreright fide, as where there is none.
7. In delineating ovals, circles, arches, croffes, fpirals, and
crofs arches, or any other figure in the roof of any room, firft
draw ichnographically, and fo, with perpendiculars from the moffc
eminent points thereof, carry it up into the cieling ; from which
feveral points carry on the figure.
8. The center, in any fcenographic regular figure, is found
by drawing crofs lines from oppofite angles; for the point where
the diagonals crofs is the center.
9. A ground plane of fquares is alike, both above and below
the horizontal line ; only the more it is difiant above or beneath;
the horizon, the fquares will be fo much the larger or wider.
10. In drawing a Perfpeclive figure, where many lines come
together, you may, for the directing of your eye, draw the dia-
gonals in red, the vifual lines in black, the perpendiculars in
green, or other different colour, from that which you intend the
figure mall be of.
J1. Having confidered the height, diftance, and pofition of
the figure, and drawn it accordingly, with fide or angle againff
the bafe ; raife perpendiculars from the feveral angles or defigned
points from the figure to the bafe, and transfer the length of each
perpendicular, from the place where it touches the bafe, to the
bafe on the fide oppofite to the point of diflance ; fo will the dia-
jnetrais drawn to the perpendiculars in the bafe, by interfeclion
with the diagonals, drawn to the feveral transferred diftances,
give the angles of the figures ; and fo lines drawn from point to
point will circumfcribe the fcenographic figure.
12. If in a landfcape there be any ftanding waters, as rivers,
ponds, and the like; place the horizontal line level with the far-
t'left fight or appearance of it.
13. If there be any houfes or the like in the picture, confider
their pofition, that you may find from what point in the horizon-
tal lines to draw the front and fides thereof.
74. In defcribing things at a great diflance, obferve the pro-
portion