Monday, July 1, 2019

What is Reflection and Shear

What is Reflection and Shear?


Reflection is that the mirror image of original image in various word we are able to say that it is a rotation operation with 180° inflection transformation.
Reflection in computer graphics

Size of a object does not change.


A transformation that slands the shape of an object is called shear transformation there are two type of shear transformation.
1) X Shear
2) Y Shear
The X shear preserve the Y co-ordinate and change are made to X co-ordinate which cause the vertical lines to till right or left according to figure.

Shear in computer graphics

The transformation Matrix for X shear may be represented as
[X’ Y'] = [XY] + Shy. [XY]
Where Shy is the shearing factors with respect to y module.
Similarly, the y shear preserves and change the Y co-ordinate which causes the horizontal line to transformer information LINE which shapes up or down as shown in the figure.
Shear in computer graphics

The y Shear can be represented as [X’ Y’] = [X Y] + Shx.[XY]
Where shx is the Shear factor with respect to X co-ordinate.

No comments:

Post a Comment