Illumination direction in Eduard
Adjust the horizontal illumination direction with the round slider. The illumination angle is relative to the default top-left direction.
Click on the small dot at the top-left of the round slider to use the default top-left direction of 0°.
Eduard adjusts the illumination direction locally to improve the readability of small and large terrain forms when you select a manual shading style (that is, the style is not set to Analytical).
For best readability, set the illumination direction to the top-left for most terrains, as shown on the left side on the image below. With an illumination direction from below as shown on the right side on the image below, it is more likely that some readers see mountains as valleys and valleys as mountains.
See also
