Parallel Projection
Parallel Projection
Parallel Projection use to display picture in its true shape and size. When projectors are perpendicular to view plane then is called orthographic projection. The parallel projection is formed by extending parallel lines from each vertex on the object until they intersect the plane of the screen. The point of intersection is the projection of vertex.
Parallel projections are used by architects and engineers for creating working drawing of the object, for complete representations require two or more views of an object using different planes.
Orthographic Projection
In orthographic projection the direction of projection is normal to the projection of the plane. There are three types of orthographic projections
- Front Projection
- Top Projection
- Side Projection
- Isometric Projection: All projectors make equal angles generally angle is of 30°.
- Dimetric: In these two projectors have equal angles. With respect to two principle axis.
- Trimetric: The direction of projection makes unequal angle with their principle axis.
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