Assumptions for area subdivision method, Computer Graphics

Assignment Help:

Assumptions for Area Subdivision Method

a) ¾   Plane of projection is z=0 plane

b) ¾ Orthographic parallel projections

c) ¾   Direction of projection as d= (0,0,-1)

d) ¾   suppose here, the viewing (screen) area is a square

e) ¾   Objects are made up of polygon faces.

1817_Assumptions for area subdivision method.png

To apply the area-subdivision method, we should identify whether the area is part of a single surface or a complex surface by means of visibility tests. If the tests specify that the view is sufficiently complicated, we subdivide it. Furthermore, we apply the tests to each of the smaller regions and then subdivide additionally, whether the tests specify that, the visibility of a particular surface is still not certain. We continue this process till the subdivisions are simply analyzed as belonging to a particular surface or till they are decreased to the size of a single pixel. Beginning with the full screen as the initial area, the algorithm divides an area at all stages in four smaller area, as demonstrated in figure 8 that is similar to quad-tree approach.


Related Discussions:- Assumptions for area subdivision method

What is 2-dimensional transformation, 2-DIMENSIONAL TRANSFORMATION Mode...

2-DIMENSIONAL TRANSFORMATION Modeling transformation is the mechanism to compose an image from modeling  primitives. The modeling primitives are defined in their own coordinate

Military-applications for computer animation, Military: In order to enter ...

Military: In order to enter the military, one has to go by various training. Depending upon whether you want to be in the army, navy or the marines, you may be working along with

Single point perspective transformation, Single Point Perspective Transform...

Single Point Perspective Transformation - Viewing Transformations In order to derive the particular point perspective transformations beside the x and y-axes, we construct fi

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

Explain the merits and demerits of plasma panel display, Explain the merits...

Explain the merits and demerits of Plasma panel display. Advantages: Refreshing is not needed. Produce a very steady image free of Flicker. Less bulky than a CRT.

Give three ways to display a panel, QUESTION (a) Give some ways you can...

QUESTION (a) Give some ways you can change the magnification of a document? (b) Give three ways to display a panel? (c) Identify the differences between Selection tool an

Projections - viewing transformation, Projections - Viewing Transformation ...

Projections - Viewing Transformation Specified 3-D object in a space, Projection can be explained as a mapping of 3-D object into 2-D viewing screen. Now, 2-D screen is termed

Axis of rotation - construction of a solid, Axis of Rotation - Construction...

Axis of Rotation - Construction of a solid with a translational sweep Figure:  (a)                                                                          Figure  (b)

Multimedia entertainment, Multimedia Entertainment: The field of ente...

Multimedia Entertainment: The field of entertainment uses multimedia extensively. One of the earliest and the most popular applications of multimedia are for games. Multimedi

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