Exceptional cases - orthographic projection, Computer Graphics

Exceptional cases - Orthographic Projection

1)   We have an Orthographic projection, if f=0, then cot (β) =0 that is β=900.

2)   β =cot-1 (1)=450 and this Oblique projection is called Cavalier projection, if f=1, the edge perpendicular to projection plane are not foreshortened.

3)   β =cot-1 (1/2)=63.4350 and this Oblique projection is called Cabinet projection, if f=1/2 (the foreshortening is half of unit vector).

Note: The usual values of θ are 30° and 45°. The values of (180° - θ) are also suitable.

For foreshortening factor that is f=1, 7/8,3/4,5/8,1/2, an Oblique projections, along with θ=450 is shows in the following figure.

52_Exceptional cases - Orthographic Projection.png

Figure: Oblique projections for f=1,7/8,3/4,5/8,1/2, with θ=450 (from left to right)

Posted Date: 4/4/2013 2:29:48 AM | Location : United States







Related Discussions:- Exceptional cases - orthographic projection, Assignment Help, Ask Question on Exceptional cases - orthographic projection, Get Answer, Expert's Help, Exceptional cases - orthographic projection Discussions

Write discussion on Exceptional cases - orthographic projection
Your posts are moderated
Related Questions
Construction of a Solid with a Translational Sweep Figure demonstrates construction of a solid along with a translational sweep. Translating the control points of the periodic

Image Editing Tools These are specializing and influential tools for enhancing and re-touching existing bit-mapped images. Such applications also give several of the features a

What is Polygon mesh?  Polygon mesh is a method to show the polygon, when the object surfaces are tiled, it is more convenient to state the surface facets with a mesh function.

Historical and traditional methods for production of animation                                              Definition: Computer animation is a time depends phenome

Explain the differences among a general graphics system designed for a programmer and one designed for a specific application, such as architectural design? Basically, package

Explain the working of Animators Animators want to create a human image that moves and interacts with its background in such a way that viewers can't tell if a specific scene i

Important Points About the Diffuse Reflection An extremely rough surface appears uniformly bright from each viewing direction Q the intensity of reflected light is identical i

Polygonal Meshes - Clipping and 3D Primitives Apart from polygonal surfaces, polygonal meshes are also used extensively in 3D geometric modelling.A mesh is essentially a polyg

Suggest a method to draw an object as in figure using four Bézier curves of suitable degree Answer: Employ four quartic Bézier curves with the endpoint of one as the initial poi

Basic Ray Tracing Algorithm - Polygon Rendering The Hidden-surface removal is the most complete and most versatile method for display of objects in a realistic fashion. The co