Boris FX Boris Calligraphy Vresion 2.0, Руководство пользователя

Страница: 8 / 84

8
•
•
•
•
•
•
Understanding Vector Graphics and Bitmaps
A bitmap image is an image represented by a grid of pixels, each
of which is assigned a speci Þ c color. This produces a coherent
image when viewed at the intended size, but if scaled
dramatically the pixels become apparent and the image loses
quality.
The example at right shows the letter P represented as a bitmap.
A video image is an example of a bitmap, as is an image
produced in an application such as Photoshop.
A vector graphic is a resolution-independent image
mathematically represented as a series of lines and curves called
vectors. The relationship between the vectors remains constant
as the object is scaled, so there is never a loss of quality.
The example at right shows the letter P composed of vectors. An
EPS
Þ le is an example of a vector graphic.
The titles that you create using the Title 3D Generator are vector-
based. This means that they will remain razor sharp even if you
scale them very large.
Advantages of Vector Graphics
You should use vector graphics when you need to preserve the vectors in a Þ le to scale the
object. For example, if you have a very small logo and need to make it larger.
This image shows an original EPS Þ le used as a
mask.When the EPS Þ le is converted to a bitmap, and
the mask is scaled, the edges become pixelated and
lose quality. Built-in antialiasing compensates for this
degradation somewhat by smoothing the jagged
edges, but can cause the image to blur.
When vectors are used, the mask can be scaled and no
quality is lost, because the shape uses the vector
information in the media
Þ le.