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Sun vector

The sun vector is an input that represents the direction of the sun s rays in a three-dimensional space. It is typically defined by three components: the azimuth angle, the zenith angle, and the intensity. The azimuth angle indicates the horizontal direction of the sun, measured clockwise from the north. The zenith angle represents the vertical angle between the sun and the observer s zenith, with 0 degrees indicating the sun directly overhead and 90 degrees indicating the sun on the horizon. The intensity component represents the strength or brightness of the sun s rays. The sun vector is commonly used in various applications such as solar energy systems, astronomy, and computer graphics to simulate realistic lighting conditions.