Problems at shared vertices - modeling and rendering, Computer Graphics

Assignment Help:

Problems at Shared Vertices - Modeling and Rendering

Shading discontinuities can arise while two adjacent polygons fail to share a vertex which lies along their common edge. Identify the three polygons of figure 17, wherein vertex C is shared through the two polygons on the right, although not by the large polygon on the left. The shading information found directly at C for the polygons at the right will classically not be the same as the information interpolated at such point from the values at A and B for the polygon at the left.

155_Problems at Shared Vertices - Modeling and Rendering.png

Figure: Vertex C is shared by the two polygons on the right, but not by the larger Rectangular polygon on the left.

As an outcome, there will be a discontinuity in the shading. The discontinuity can be eliminated via inserting in the polygon on the left an extra vertex that shares C's shading information. We can pre-process a static polygonal database in sequence to eliminate this matter; conversely, if polygons will be split on the fly for example: through using the BSP-tree visible-surface algorithm, so extra bookkeeping can be finish to initiate a new vertex in an edge that shares an edge which is split.

773_Problems at Shared Vertices - Modeling and Rendering 1.png

Figure: Problems with computing vertex normal. Vertex normal are all parallel


Related Discussions:- Problems at shared vertices - modeling and rendering

Mathematics-applications for computer animation, Mathematics: There are so...

Mathematics: There are some area like Probability, combination, permutation, etc.,that can be well explained along with the help of animation, that helps in enhancing the learning

Parameterized systems - computer animation, Parameterized Systems - Compute...

Parameterized Systems - Computer Animation Parameterized Systems is the systems which permit objects motion features to be given as part of the object descriptions. The adjus

Basic approaches for visible surface determination, Basic Approaches for Vi...

Basic Approaches for Visible Surface Determination There are two basic approaches for visible-surface determination, as per if they deal along with their projected images or a

Traditional animation techniques - computer animation, Traditional Animatio...

Traditional Animation Techniques - Computer Animation Before the advent of computer animation, each animation was done via hand that involves an enormous amount of work. You

Convert the rgb values for the colours, In computers, colours are created b...

In computers, colours are created by blending different combinations of red, green and blue. These colours are normally specified as three two-digit hexadecimal numbers in html, ph

Ray tracing - polygon rendering & ray tracing methods, Ray Tracing - Polygo...

Ray Tracing - Polygon Rendering & Ray Tracing Methods Ray tracing obeys all rays from the eye of the viewer back to the light sources. The method Ray tracing is very good at

Overstriking, why overstriking is harmful.justify

why overstriking is harmful.justify

Gif file compression, GIF File Compression The Graphic Interchange Form...

GIF File Compression The Graphic Interchange Format file format utilizes a relatively basic form of file compression which squeezes out inefficiencies within the data storage w

Traditional animation techniques , Traditional Animation techniques as: ...

Traditional Animation techniques as: 1) Key Frames                        2) Cel Animation Formula: Required Key frames for a film = {[Time(in seconds)]

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