Cases for subdivisions of polygon-visible surface detection, Computer Graphics

Cases for Subdivisions of Polygon

No additional subdivisions of a particular area are desired, if one of the subsequent conditions is true as:

Case 1: All the polygons are disjoint from the region. In this condition, the background color can be displayed in the region.

Case 2: Accurately one polygon faces, after projection, comprised or intersecting in the square region. In this condition the area is first filled along with the background color, and after that the part of the polygon comprised in the region is scan converted.

Case 3: There is a particular surrounding polygon, although no intersecting or comprised polygons. In this condition the region is filled along with the color of the surrounding polygon.

Case 4: More than one polygon is contained in surrounding the area, although one is a surrounding polygon which is in front of all another polygon. Finding whether a surrounding polygon is in front is done through computing the z coordinates of the planes of all surrounding, contained and intersecting polygons at the four corners of the area; if there is a surrounding polygon that four corner z coordinates are larger than one that of any other polygons so the entire region can be filled along with the color of this surrounding polygon.

Posted Date: 4/5/2013 1:26:03 AM | Location : United States







Related Discussions:- Cases for subdivisions of polygon-visible surface detection, Assignment Help, Ask Question on Cases for subdivisions of polygon-visible surface detection, Get Answer, Expert's Help, Cases for subdivisions of polygon-visible surface detection Discussions

Write discussion on Cases for subdivisions of polygon-visible surface detection
Your posts are moderated
Related Questions
Differentiate between z-buffer method and scan-line method. What is the visibility test made in these methods? Solution : In depth buffer algorithm every pixel location on the

Introduction of Polygon Rendering and Ray Tracing Method Different type of sources of light and the reflections generated by the object in exposure of these sources. As an obje

What is a dot size and interdot distance? Dot size may be explained as the diameter of a single dot on the devices output. Dot size is also known as the Spot size.  Interdo

what type of animation is produced by the line y=mx+c?

Light Wave 3D - Softwares for computer animation It is the other high end PC 3-D computer graphics software package. Originally established for the Amiga platform, it is now a

Define Octrees?  Hierarchical tree structures called octrees, are used to show solid objects in some graphics systems. Medical imaging and other applications that needs display

Categories of Line Segments It categorizes line segments into three categories (i) trivially rejected (ii) trivially selected (iii) may be partially visible or totally invisibl

Compression methods utilized for digital video can be categorized in three major groups: General reason compression techniques can be utilized for any type of data. Intr

General Perspective transformation with COP at the origin Here we suppose the given point P(x,y,z) be projected like P'(x',y',z') on the plane of projection. The center of pro