Projections and Views

What theory is commonly used to define orthographic projection?

Glass box theory

4 components of a projection are

1) actual object 2) eye of viewer 3) projection plane 4) lines of sight

Perspective projection

Also a pictorial drawing, but gives the illusion of depth- similar to viewing from a human eye.

Isometric drawing

Displays the 3D view. Height, depth, and width are precisely measured

Isometric in Greek means

Equal measure

Common factor in all isometric drawings is —

Height is measured vertical Width and depth are measured at a 30° angle from the horizontal

Example of perspective projection is

Isometric

2 kinds of parallel projections are

Orthographic and Oblique

2 broad types of projections are

Parallel and Perspective (converging)

Oblique projection

Simple type of technical drawing of graphical projection used for producing pictorial 2D images of 3D objects (wonky)

Parallel Projection

The lines of sight from the object to the projection plane are parallel

3 most frequently used views

Top, front, and right side

Orthographic projection

a means of representing a three-dimensional object in two dimensions.