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

Principle vanishing point - perspective projections, Principle Vanishing po...

Principle Vanishing point - Perspective Projections Assume that line 1 and l2 be two straight lines parallel to each other that are also parallel to x-axis. If the projection

Question, what are the steps involved in 3d transformation explain

what are the steps involved in 3d transformation explain

Curve segment - properties of bezier curves, Curve segment - properties of ...

Curve segment - properties of bezier curves Note : 1) The joining point on the curve along w.r.t. the parameter based upon second derivates of Q(t) is the acceleration. Wh

What is cubic spline, What is cubic spline?  Cubic splines are a straig...

What is cubic spline?  Cubic splines are a straight forward extension of the methods underlying parabolic spline. The total curve in this case is a sequence of arcs of cubic ra

Uncompressed and common audio format, Uncompressed / Common Audio Format ...

Uncompressed / Common Audio Format There is one main uncompressed audio format: PCM. It is generally stored like a .wav on Windows. WAV is file format which is flexible and des

Student, hi I need help with photoshop

hi I need help with photoshop

Arguments made in favor of digital sound, Arguments made in favor of Digita...

Arguments made in favor of Digital Sound Dynamic range. Lower noise floor. Immunity to wow and flutter. Absence of generation loss. Capability to apply redu

Xy-shear about the origin - 2-d and 3-d transformations, xy-Shear about the...

xy-Shear about the Origin - 2-d and 3-d transformations Suppose an object point P(x,y) be moved to P'(x',y') as a outcome of shear transformation in both x- and y-directions a

Vanishing point - viewing transformations, Vanishing Point - Viewing Transf...

Vanishing Point - Viewing Transformations This point is that point at those parallel lines shows to converge and vanish. A practical illustration is a long straight railroad

Calculate the entropy of the source, Question 1) Encode the following s...

Question 1) Encode the following string using HUFFMAN ENCODING:                            DO YOU LIKE TINKY WINKY OR EMPTY DUMPTY?     Empty spaces are considered.

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