Viewing transformation, Computer Graphics

Assignment Help:

Viewing Transformation

In previous section, we have discussed about the geometric transformations as Translation, Shearing, Reflection, Scaling and Rotation. Rotation, Reflection and Translation transformations are utilized to manipulate the specified object, but Scaling and Shearing transformations are utilized to modify the shape of an object, either in 2-Dimensional or in 3-D.

A transformation that maps 3-D objects onto 2-D screen, we are here called it Projections. We have two kinds of Projections that are: Parallel projection and Perspective projection. This categorization is based upon the fact where rays coming from the object converge on the centre of projection or not. This projection is termed as Perspective projection; otherwise it is Parallel projection, if the rays coming from the object converge at the centre of projection. In the condition of parallel projection the rays from an object converge at infinity, as not like perspective projection whether the rays from an object converge at a finite distance that is termed as COP.

Parallel projection is additional categorized into Orthographic and Oblique projection. Parallel projection can be categorized as per to the angle which direction of projection makes along with the projection plane but if the direction of projection of rays is perpendicular to the projection plane so this parallel projection is termed as Orthographic projection and also if the direction of projection of rays is not perpendicular to the projection plane so this parallel projection is termed as Oblique projection. The orthographic or perpendicular projection appears only the front face of the specified object that includes only two dimensions: width and length. The oblique projection, conversely, shows the front surface and the top surface, that includes three dimensions: height, length and width. Consequently, an oblique projection is one way to demonstrate all 3-dimensions of an object in a particular view. Isometric projection is the most frequently utilized type of axonometric projection that is a method utilized to illustrate an object in all three dimensions by length, width as well as height in a single view. Axonometric projection is a type of orthographic projection wherein the projectors are all the time perpendicular to the plane of projection.


Related Discussions:- Viewing transformation

Ray tracing algorithm - recursive, Ray Tracing Algorithm - Recursive ...

Ray Tracing Algorithm - Recursive Frequently, the basic ray tracing algorithm is termed as a "recursive" acquiring an outcome wherein a given process repeats itself an arbitr

Clipping and 3d primitives, Clipping and 3D Primitives This unit introd...

Clipping and 3D Primitives This unit introduces you to three important concepts of Computer Graphics. After that discusses the concept of clipping, which means removal of objec

What are the utilizations of inverse transformation, What are the utilizati...

What are the utilizations of Inverse transformation? Provide the Inverse transformation for translation, shearing, reflection, scaling and rotation. Solution: We have observed

Polygon -rendering methods, Polygon -Rendering Methods Now we will see...

Polygon -Rendering Methods Now we will see the application of an illumination model to execute the rendering of standard graphics objects that are formed along with polygonal

Transform from the world to viewing coordinate system, To transform from th...

To transform from the world coordinate system to viewing coordinate system you need to perform the following operations.  a)  Translate the viewing coordinate origin to the worl

Computer simulation - computer aided design, Computer simulation - Computer...

Computer simulation - Computer Aided Design Computer simulation is the manner of designing a model of a real or theoretical physical system, not including the model on a digit

Video conferencing and virtual reality, Video Conferencing and Virtual Real...

Video Conferencing and Virtual Reality Virtual reality is a truly fascinating multimedia application. In such, the computer creates an artificial environment using hardware an

Define refresh rate and refresh buffer, Refresh Rate: refreshing on raster...

Refresh Rate: refreshing on raster - scan displays is carried out at the rate of 60 to 80 frames per second, although some system are designed for higher refresh rates. Sometimes,

Computer aided design and computer aided manufacturing, The development of ...

The development of CAD had little consequence on CNC initially because of the various abilities and file formats used through drawing and machining programs. Conversely, as Compute

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd