MGMT 1000 Lecture 12: MGMT 1000 Tutorial 12 Notes
MGMT 1000 Tutorial 12 Notes – Patterns of Color
Introduction
• Closed objects can be shaded and filled with patterns of color, also described
mathematically.
• Object elements can be combined or connected together to form more complex
elements, and then those elements can also be manipulated and combined.
• You might be surprised to learn that Shrek, the image, is an example of an object image.
• Object images have many advantages over bitmap images.
• They require far less storage space.
• They can be manipulated easily, without losing their identity.
• Note, in contrast, that if a bitmap image is reduced in size and re-enlarged, the detail of
the image is permanently lost.
• Whe suh a proess is applied to a itapped straight lie, the result is jaggies.
• Conversely, images such as photographs and paintings cannot be represented as object
images at all and must be represented as bitmaps.
• Because regular printers and display screens produce their images line by line, from the
top to the bottom of the screen or paper, object images also cannot be displayed or
printed directly, except on plotters.
• Instead, they must be converted to bitmap images for display and printing.
• This conversion can be performed within the computer, or may be passed on to an
output device that has the capability to perform the conversion.
• A PostScript printer is an example of such a device.
• To display a line on a screen, for example, the program would calculate each of the
pixels on the screen that the line passes through, and mark them for display.
• This is a simple calculation for a computer to perform.
• If the line is moved or resized, it is only necessary to perform the calculation again to
display the new image.
• EXAMPLE
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