Mapping Type – Allows the user to select the environment mapping type. Use transform – When enabled, the Transform parameters can be used to rotate the map horizontally and vertically and to move the texture in the UV space. Horizontal Flip – Flips the environment horizontally. Vertical Flip – Flips the environment vertically. Horizontal Rotation – Allows the rotation of the environment map left and right. Vertical Rotation – Allows the rotation of the environment map up and down. Ground On – Allows the user to flatten the bottom part of an environment map onto a virtual plane. This is useful for rendering CG objects when you only have an environment map. Ground Position – Specifies the X, Y and Z coordinates of a point in 3D space where the center of the environment map is projected. Ground Radius – Specifies a projection radius. Can be used to control the scale of the projection.
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