Rainbows

In the real world rainbows appear after rainstorms as arcs of light displaying all the color in the spectrum. In Bryce a rainbow is an atmospheric effect that can be added to any sky. A rainbow is only visible if the sun is visible, meaning you can't have a rainbow at night. As well, you can add a secondary rainbow to create the illusion of reflection.

Rainbows are linked to the sun. As the color or intensity of the sun changes, so does the rainbow. In addition, the position of the rainbow in the sky is dependent on the position of the sun. Rainbows appear to be infinitely distant from the camera. You can't approach them by moving the camera, so the pot of gold is always just out of reach.

To add a rainbow to your sky:

1. Display the Sky & Fog palette by clicking the Sky & Fog button at the top of the Bryce window.
2. Click the Sky Lab button. The Sky Lab dialog appears.
3. Click the Atmosphere tab. The Atmosphere tab of the Sky Lab dialog contains all the controls you'll need to create rainbows.
4. Enable the Rainbows option.
5. Drag the slider or enter a value in Radius field in the Rainbow area. This value sets the width of the rainbow.
6. Drag the slider or enter a value in the Opacity field. This controls the rainbow's transparency.
7. If you want to add a secondary rainbow to your sky, enable the Secondary Bow option.

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