Elipse
foreshadowed view of circle
major axis
line through the widest point of elipse
minor axis
line through the shortest point of elipse
T or F elipse are symmetrical
True
common elipse mistake
asymmetrical, football
the proportion of horizontal ellipise are determined by
eye level
as ellipes move further away eye level they become
more open
ellipse that align horizonally across the page are
equally forshadowed
even if the form is tilted the axis for the ellipes in a regualr cylinder are always
perpendicular to major axis
landmark point
points where the contour changes direction
when drawing from life, you should placve your axis through
landmark points
matrix
a formative pattern to guide makling a pattern around round figure
who made a pen and ink study of a vase in perspective around 1450, more than 500 years beofre computer graphics
paolo uccello
vanishing point
the point where receding parallel lines appear to convert
angle of vision
the limitation on how much of the field of visionis included in the drawing
1pt perspective
used when drawing rectangular solids that have facing planes that are paraelle to the picture plane
paraelle edges that recede to space will all
convert to same vanishing point
vanishing point it located
at eye level
perspective grid
a matrix. made up of lines on paper that convert to vanishing point
linear perspective is a tool to
draw what they see correctly
the diagonials of any shape or rectangle will always intersect
correct
if a square or rectangle is seen foreshortened the perspective midpoint
can be found with diagonals
how to draw equally spaced receding elements
sketch 2 verticals that go to vanishing point
draw diagonals both ways the find mid pt. draw line frm MP, to VP.
Visual Ray (VR)
path of light