Color Perspective

Color perspective is the change in color with distance that characterizes the appearance of distant scenes in Nature: Dark areas turn blue and light ones yellow to orange to red.

In Bryce you can make things change any color you like with distance. Color perspective is half of aerial perspective, while the other half is the loss of contrast with distance. Color perspective controls the rate at which the red, green, and blue components of the atmosphere come in with distance.

In Nature, the atmosphere is white or a pale shade of gray. The blue component of that shade comes in faster than the green, which in turn comes in faster than the red. This is because the Earth's atmosphere scatters blue light more efficiently than green, and red least efficiently of all. The net result is that as a dark area recedes into the distance, it will turn blue before it turns white or pale gray in the far distance. Similarly, white areas will turn yellow, then orange, then red with increasing distance.

The default values of color perspective are very delicate: if you change them, expect unpredictable results!

To set the color perspective:

1. If it's not already visible, display the Sky & Fog palette by clicking the text item on the menu bar.
   
   
2. Click the Sky Lab button. The Sky Lab dialog appears.
   
   
3. Click the Atmosphere tab.
   
   
4. Click the Color Perspective button.
   
   
5. Drag over the RGB controls or enter a number in the field to control the rate at which the red, green, and blue components of the atmosphere come in with distance.
   
   

Examples:

• Color Perspective Disabled:
  
  
• RGB = 79 2 30
  
  
  
  
• RGB = 0 1 88
  
  
  
  

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