Adobe 65011817 User Guide - Page 13

About vector graphics, Creating a new Fireworks document

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USING FIREWORKS CS4 7 Fireworks basics About vector graphics Vector graphics render images using lines and curves (vectors) that include color and position information. For example, the image of a leaf can be defined by a series of points that describe the outline of the leaf. The color of the leaf is determined by the color of its outline (the stroke) and the color of the area enclosed by the outline (the fill). Vector graphics are resolution-independent. That means the quality of a vector graphic's appearance won't change when you change its color; move, resize, or reshape it; or when the resolution of the output device changes. About bitmap graphics Bitmap graphics are composed of dots (pixels) arranged in a grid. Your computer screen is a large grid of pixels. In a bitmap version of the leaf, the image is determined by the location and color value of each pixel in the grid. Each pixel is assigned a color. When viewed at the correct resolution, the dots fit together like tiles in a mosaic. When you edit a bitmap graphic, you modify pixels rather than lines and curves. These bitmap graphics are resolutiondependent, which means that the data describing the image is fixed to a grid of a particular size. Enlarging a bitmap graphic redistributes the pixels in the grid, which can make the edges of the image appear ragged. Displaying a bitmap graphic on an output device with a lower resolution than the image itself can also degrade the image's quality. Creating a new Fireworks document New documents in Fireworks are saved as Portable Network Graphic (PNG) documents. PNG is the native file format for Fireworks. Graphics created in Fireworks can be exported to or saved in several web and graphic formats. Regardless of the optimization and export settings you select, the original Fireworks PNG file is preserved to allow easy editing later. Last updated 3/8/2011

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7
USING FIREWORKS CS4
Fireworks basics
La
s
t updated 3/8/2011
About vector graphics
Vector graphics render images using lines and curves (vectors) that include color and position information. For
example, the image of a leaf can be defined by a series of points that describe the outline of the leaf. The color of the
leaf is determined by the color of its outline (the
stroke
) and the color of the area enclosed by the outline (the
fill
).
Vector graphics are resolution-independent. That means the quality of a vector graphic's appearance won't change
when you change its color; move, resize, or reshape it; or when the resolution of the output device changes.
About bitmap graphics
Bitmap graphics are composed of dots (
pixels
) arranged in a grid. Your computer screen is a large grid of pixels. In a
bitmap version of the leaf, the image is determined by the location and color value of each pixel in the grid. Each pixel
is assigned a color. When viewed at the correct resolution, the dots fit together like tiles in a mosaic.
When you edit a bitmap graphic, you modify pixels rather than lines and curves. These bitmap graphics are resolution-
dependent, which means that the data describing the image is fixed to a grid of a particular size. Enlarging a bitmap
graphic redistributes the pixels in the grid, which can make the edges of the image appear ragged. Displaying a bitmap
graphic on an output device with a lower resolution than the image itself can also degrade the image's quality.
Creating a new Fireworks document
New documents in Fireworks are saved as Portable Network Graphic (PNG) documents. PNG is the native file format
for Fireworks.
Graphics created in Fireworks can be exported to or saved in several web and graphic formats. Regardless of the
optimization and export settings you select, the original Fireworks PNG file is preserved to allow easy editing later.