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The VRayPlaceEnvTex is a placement node that controls the placement of environment maps. It is automatically created when a texture is assigned to a VRayLightDome.

The example on the right shows an HDRI connected to a VRayDomeLight using a VRayPlaceEnvTex node to control the image's rotation.

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.