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162 Chapter 5: Creating Geometry
The most prominently displayed and intuitive
color model is the HBW model. This model
represents a natural, pigment-based way of
mixing color by starting with a pure color (hue)
and then making it darker by adding black, or
lighter by adding white.
The main feature of the H BW model is a large
square box displaying the color spectr um.
Across the top of this box you have the spe ctrum
of pure colors, or hue. Down the side of the bo x
you see increasing levels of blackness, making
the color dark as you approach the bottom.
To the right of the color spectrum box is the
Whiteness box, which controls the amount
ofwhiteinthecolor. Usehigherpositionsto
decrease the whiteness, or lower positions to
increase the whiteness.
• Red/Blue/Green (RGB)
The RGB model adjusts the mix of Red,
Green,andBluetodefineacolor.Thismodel
represents the way colored light can be mixed.
This is additiv e color mixing, as opposed to the
subtractive color mixing for p aint and other
pigments. You can adjust values using the color
sliders, the numer ic fields to their right (via t he
keyboard),orthespinnerstotherightofthe
numeric fields.
• Hue/Saturation/Value (HSV)
The HSV color model adjusts H ue, Saturation,
and Value. Hue sets the color; Saturation
(labeled "S at") sets the color’s purity; and Value
sets the color’s brightness, or intensit y. You
can adjust va lues using the color sliders, the
numeric fields to their right (via the keyboard),
or the spinners to the right of the numeric fields.
As you adjust the controls of one color model, the
controls of the other two models change to match.
The color defined by the color model is displayed
in the right half of the Color Output box. The
original color, before you began making changes,
is displaye d in the left half.
Procedures
To display the Color Selector:
1.
Click the color swatch of a color parameter
such as the color of a light or of a material
component.
Note: Theobjectcolordisplayednexttoan
object’s name on command panels uses the
Object Color dialog (page 1–159).OntheObject
Color dialog, clicking the Active (or Current)
Color swatch or the Add Custom Colors button
displays a Color Selector.
2. Make a color selection and click OK or Cancel,
or t he Close button (X).
If using the Add Color version of the Color
Selector,besuretoclickAddColorfirst.
3. To revert to the original color, click Reset.
To choose the hue of a color, do one of the following:
• Click anywhere in the Hue rainbow (the large,
multicolored square).
• Drag the Hue slider at the top of the rainbow.
•DragtheRed,Green,andBluesliders.
•DragtheHueslider.
• Use the Red, Green, Blue, or Hue spinners.
To make a color l ighter, do one of the foll owing:
• Drag the vertical Whiteness slider (at the right
of the Hue r ainbow) downward.
• Drag the vertical Blackness slider (at the left of
the Hue rainbow) upward.
• Drag the Saturation (Sat.) slider to the left.
• U se the Saturation spinner to decrease
saturation.
• Drag the Value slider to the right.
• Use the Value spinner to increase the value.