Chapter Description • Aims – Basic of Computer Graphics. • Expected Outcomes – Understand the basic concept of computer graphics. (CO1: Knowledge) – Ability to use the computer graphics …

Computer Graphics (CS 4731) Lecture 22: 2D Clipping Prof Emmanuel Agu Computer Science Dept. Worcester Polytechnic Institute (WPI)

Computer Viewing CS 537 Interactive Computer Graphics Prof. David E. Breen Department of Computer Science

As in the previous case, relative proportions of objects are maintained only if the aspect ratio of the viewport is the same as the aspect ratio of the clipping window

Computer Graphics 2D and 3D Viewing Transformations Based on slides by Dianna Xu, Bryn Mawr College

Various techniques are used to provide text clipping in a computer graphics. It depends on the methods used to generate characters and the requirements of a particular application.

The picture is stored in the computer memory using any convenient Cartesian co-ordinate system, referred to as World Co-Ordinate System (WCS). Picture is displayed on the display device it is …

2D Transformations “Transformations are the operations applied to geometrical description of an object to change its position, orientation, or size are called geometric transformations”.

Initially, every line endpoint is assigned a four digit binary value called a region code, and each bit is used to indicate whether the point is inside or outside one of the clipping-window boundaries.

Hardware Stage: Clipping After primitive assembly, subsequent operations are per‐primitive Clipping: Remove primitives (lines, polygons, text, curves) outside view frustum (canonical view volume)