Orthographic projection Flashcards
0
Q
What is the difference between Orthographic projection & Perspective projection?
A
Orthographic- Perspective-
Advantage: dimensionally stable. Adv: Spatially Integrated
Dis-advantage: requires interpretation. Dis: Unstable ( cannot build)
Purpose: Can build from plans Pur: Visualization (presentation)
1
Q
What are the 3 principal planes of projection?
A
- horizontal plane ( top & bottom )
- frontal plane ( front & back )
- profile plane
2
Q
What is the station point in Orthographic Projection.
A
The viewers eye
3
Q
What is Orthographic projection?
A
Ortho means 90*
Projects images parallel to infinity
4
Q
What are characteristics of an Orthographic SURFACE?
A
90* Projection Plane “ Normal surface”
- true size
- true length.
- Frontal : Single Line
- Horizontal : Perpendicular
- Top view : Foreshortened
5
Q
What’s is an OBLIQUE SURFACE?
A
Neither parallel or perpendicular
Requires all 3 views
