Brief history of perspective n
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Geometric perspective was developed during the renaissance ( 15th century) by Filippo Brunelleschi. Renaissance artists were obsessed with the idea of creating an illusion of 33dimensions on a flat surface. Trompe l’oeil artists, who mastered perspective, created illusions that were so realistic that they fooled the eye.
Experiments with foreshortening
Study of chalice – Paolo Occello
Enlarged results of two extreme positions. Note :a) The excessive distortion of the red cube and the very short distance between the VPs. b) The black cube is not distorted and has its VPs extending well beyond the paper space.
VP1
VP1
Conclusions drawn from the cube observations n
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The vanishing points are to be placed at the extreme edges of the drawing paper. The included angle at the bottom of the object being drawn should always be considerably more than 90° 90° ( at least, approximately 120° 120°). With this arrangement, the height, (although slightly foreshortened), can be assumed to remain unchanged.
VP 1
VP 2
122
°
Using the given vanishing points and starter lines draw a perspective view of a cube size 100mm.
Variations of the rectangle method Practically, the foreshortening of the sides depends on the sighting point, therefore, the midmid-point of the upper side, or the corners of the rectangle, may be used to find the approximate foreshortening.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
Advantage of the rectangle method:
VP 1 VP2
GRAPHICAL COMMUNICATION
The foreshortened sides, (unlike the 90 degrees method), remain the same regardless of the relation of the object to the eye level.
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Using the given vanishing points and starter lines draw a perspective view of a cube sise 100mm.
VP 1 VP2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Eliminating diagonals and replacing by a perspective scale to determine perspective dimensions
VP 1
12
12 24
20
20 40
GLASS PANE
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Enlarged view showing that diagonals and the perspective scale coincide exactly.
12
12 24
20
20 40
Perspective scale explained in more detail
EYE LEVEL LINE
VP
30 240 ( True length of side )
Comparison with the diagonal method
EYE LEVEL LINE
VP
30 240 ( True length of side )
Comparison with the diagonals method EYE LEVEL LINE
VP
30 240 ( True length of side )
Advantages of the perspective scale over other methods a) Any dimension can be represented using the perspective scale method, b) diagonals can be eliminated thus keeping the drawing simpler and more tidy, c) perspective circles can be constructed with much greater accuracy.
EYE LEVEL LINE
VP
63 137 194
240
Example 2
GRAPHICAL COMMUNICATION
TITLE:
TWO - POINT PERSPECTIVE
Example
Worked Example n
Convert the given isometric projection into a perspective projection.
Step 1
VP2
88
VP1
70
150
Step 2
VP1
VP2
70
150
Step 3 VP1
VP2
70
150
Step 4 VP1
VP2
12
24
70
22
12
31
12 16
32
150
16 12
31
Step 5 VP1
VP2
12
24
70
22
12
31
12 16
32
150
16 12
31
Step 6 VP1
VP2
12 12
24
70
22
12
31
12 16
32
150
16 12
31
Step 7 VP1
VP2
12 12
24
70
22
12
31
12 16
32
150
16 12
31
Step 8 VP1
VP2
12 12
24
70
22
12
31
12 16
32
150
16 12
31
Single--point Perspective Single
In this particular condition, the construction of a singlesingle-point perspective room is considerably simplified
One / TwoTwo-Point Perspective Matchbox experiments on chequered tiles Drawing of an interior using 1 vanishing point.
NAME: FORM:
DATE:
TITLE:
ONE / TWO POINT PERSPECTIVE
DRAWING NUMBER: CHECKED BY:
One / TwoTwo-Point Perspective Matchbox experiments on chequered tiles Drawing of an interior using 3 vanishing points.
NAME: FORM:
DATE:
TITLE:
ONE / TWO POINT PERSPECTIVE
DRAWING NUMBER: CHECKED BY: