7. Autodesk - ADI 4.2 Display Drivers
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Drawing
This option allows you to modify AutoCAD drawing colors 0, 8 and 9, in a fashion similar
to the way you change object colors.
When this option is selected, a highlight square appears in the drawing color area of the
simulated AutoCAD display. The square can be manipulated using the four cursor keys.
You may notice that the drawing color portion of the display is laid out just like the
CHROMA drawing supplied with AutoCAD. Press
[Enter]
and the highlight moves
down to the 16 physical colors, just as it does during the object color selection. Using
the arrow keys, pick the physical color you want to represent the selected drawing color.
Press
[Enter]
to have your selection take effect.
Physical
choosing the Physical option from the menu allows you to alter the red, green, and blue
components of the physical colors. A highlight box appears in the row of 16 physical
colors at the bottom of the screen.
Use the arrow keys to select the color you wish to edit and press
[Enter]
. Three
sliders appears near the bottom of the display, with the horizontal position of the slider
for each of the color components (red, green, or blue - RGB) indicating the relative
intensity of the component. Use the left and right arrow keys to move the slider for the
selected component, or type in a number from 0 to 255.
Many graphics boards do not support 255 different intensities for each color component.
Therefore, when you enter an intensity, Custom Colors rounds it to the nearest intensity
that your graphics board supports. For example, VGAs support 64 intensities per RGB
color component. This means intensities increase in multiples of 4 (256/64); therefore,
an intensity of 0 is the same as an intensity of 3.
The up and down arrows allow you to select the component you want to alter. As you
manipulate the sliders, all objects on the display that are of the same color as the
selected physical color change hue, allowing you to visually determine the most
appropriate setting for your display. Press
[Enter]
to set the RGB values you have
selected for the physical color you are modifying.
ADIreset
constructs a default ADI color palette, as defined in the Autodesk Device Interface
Driver Development Kit.
VGAreset
constructs a default VGA color palette in the first 16 color entries. The remaining palette
colors remain identical to those used for ADI devices.
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