Drawing techniques Flashcards
1
Q
describe orthographic projection
A
- show a 3d object from three angles: front view, plan view, side/end view
- dimensions always given in mm
- symbol in top-right corner - target with two rings and a trapezium (shorter length on left)
- process:
-front view is drawn in bottom left corner
-use dotted lines to create the outline of the side view and complete the shape in line with the front view
-draw a line at 45 degrees in the top right corner of the front view
-draw dotted lines going up from the end view, when they reach the 45 degree line begin the dotted lines to the left; this creates the outline for the plan view
-mark the hidden details on
2
Q
describe two-point perspective
A
- two points are marked at either end of the horizon line
- uses lines that are vertical or to the vanishing point
- start with the front vertical edge then draw lines to the vanishing point
- provides a realistic drawing that gives an idea of width/height/depth
3
Q
describe one-point perspective
A
- uses lines that are vertical, horizontal, or to the vanishing point
- first the front view of the object is drawn, then draw lines to the vanishing point