- UNIT-I
~Representative Uses of Computer Graphics
~Classification of Application Development of Hardware and software for computer Graphics
~Overview, Scan:
~Converting Lines
~Scan Converting Circles
~Scan Converting Ellipses
~Display Technologies
~Raster-Scan Display System
~Video Controller
~Random-Scan Display processor
~Input Devices for Operator Interaction
~Image Scanners
~Working exposure on graphics tools like Dream Weaver, 3D Effects etc
~Clipping
~Southland- Cohen Algorithm
~Cyrus-Beck Algorithm
~Midpoint Subdivision Algorithm
~2D Transformation
~Homogeneous Coordinates and Matrix Representation of 2DTransformations
~composition of 2D Transformations
~The Window-to-Viewport
Transformations
~Multimedia Definition
~CD-ROM and the multimedia highway
~Computer Animation
(Design, types of animation, using different functions)
~CD-ROM and the multimedia highway
~Computer Animation
(Design, types of animation, using different functions)
~Uses of Multimedia
~Introduction to making multimedia –
~The stage of Project
~hardware & software requirements to make good multimedia skills
~Training opportunities in Multimedia Motivation for Multimedia usage
~Introduction to making multimedia –
~The stage of Project
~hardware & software requirements to make good multimedia skills
~Training opportunities in Multimedia Motivation for Multimedia usage
Polygon meshes parametric
Polygon Surfaces Objects are represented as a collection of surfaces. 3D object representation is divided into two categories
This method simplifies and speeds up the surface rendering and display of objects.
For other 3D objection representations, they are often converted into polygon surfaces before rendering.
Polygon Mesh -A polygon mesh is a collection of vertices, edges and faces that defines the shape of a polyhedral object in 3D computer graphics and solid modeling.
- Using a set of connected polygonally bounded planar surfaces to represent an object, which may have curved surfaces or curved edges.
- The wire frame display of such object can be displayed quickly to give general indication of the surface structure.
- Realistic renderings can be produced by interpolating shading patterns across the polygon surfaces to eliminate or reduce the presence of polygon edge boundaries.
Polygon Tables
This is the specification of polygon surfaces using vertex coordinates and other attributes:
2. Attribute table: eg. Degree of transparency and surface reflectivity etc.
Some consistency checks of the geometric data table:
- Boundary Representations (B-reps) eg. Polygon facets and spline patches
- Space-partitioning representations eg. Octree Representation
This method simplifies and speeds up the surface rendering and display of objects.
For other 3D objection representations, they are often converted into polygon surfaces before rendering.
Polygon Mesh -A polygon mesh is a collection of vertices, edges and faces that defines the shape of a polyhedral object in 3D computer graphics and solid modeling.
- Using a set of connected polygonally bounded planar surfaces to represent an object, which may have curved surfaces or curved edges.
- The wire frame display of such object can be displayed quickly to give general indication of the surface structure.
- Realistic renderings can be produced by interpolating shading patterns across the polygon surfaces to eliminate or reduce the presence of polygon edge boundaries.
Polygon Tables
This is the specification of polygon surfaces using vertex coordinates and other attributes:
- Each vertex stores x, y, and z coordinate information which is represented in the table as v1: x1, y1, z1.
- The Edge table is used to store the edge information of polygon. In the following figure, edge E1 lies between vertex v1 and v2 which is represented in the table as E1: v1, v2.
- Polygon surface table stores the number of surfaces present in the polygon. From the following figure, surface S1 is covered by edges E1, E2 and E3 which can be represented in the polygon surface table as S1: E1, E2, and E3.
2. Attribute table: eg. Degree of transparency and surface reflectivity etc.
Some consistency checks of the geometric data table:
- Every vertex is listed as an endpoint for at least 2 edges
- Every edge is part of at least one polygon
- Every polygon is closed
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