DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.20658#0363
PERSPECTIVE.
349
the points q, r, t, v. Eight points are now obtained, k, q, f, r, 1, t, x and v, through which the
required apparently elliptic curve may be traced with sufficient accuracy.
These two examples attentively considered, with reference to each other, will show the mode
of delineating curvilinear figures of every description.
Did the necessary limits of this division of our work admit of the needful illustrating examples,
it might be shewn that the delineation of the effects of light or shadows, as they are more fami-
liarly termed, depends -entirely on the rules of perspective, for their forms, directions, and
intensities ; also reflected lights, the gradation of tints, by distance and other particulars,
which a-person, not previously acquainted with perspective, would imagine to depend on other
laws of more complex and difficult consideration.
It is hoped, however, that this plain, although necessarily brief account of the science will
lay open the path -of .further enquiry, and facilitate, in an important degree, the student's
progress.
4 u
BOOK
349
the points q, r, t, v. Eight points are now obtained, k, q, f, r, 1, t, x and v, through which the
required apparently elliptic curve may be traced with sufficient accuracy.
These two examples attentively considered, with reference to each other, will show the mode
of delineating curvilinear figures of every description.
Did the necessary limits of this division of our work admit of the needful illustrating examples,
it might be shewn that the delineation of the effects of light or shadows, as they are more fami-
liarly termed, depends -entirely on the rules of perspective, for their forms, directions, and
intensities ; also reflected lights, the gradation of tints, by distance and other particulars,
which a-person, not previously acquainted with perspective, would imagine to depend on other
laws of more complex and difficult consideration.
It is hoped, however, that this plain, although necessarily brief account of the science will
lay open the path -of .further enquiry, and facilitate, in an important degree, the student's
progress.
4 u
BOOK