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A Field Weather is an object that specifies location of local cloud coverage areas within cloud layers. The FieldWeather object allows creating local storms or clouds that have their own coverage texture as well as to control their movement. The number of FieldWeather objects in the scene is not limited as their impact on performance is not significant.
- The FieldWeather class to manage FieldWeather objects via API
Adding a Field Weather#
To add a Field Weather object in the world via UnigineEditor, do the following:
Setting Up Field Weather#
In the Field Weather section (Parameters window -> Node tab), the following parameters of the Field Weather object can be adjusted:
Setting Bit Masks and Size#
|Field Mask||A field mask. The Field Weather object is applied to a cloud layer only if they have matching masks.|
|Viewport Mask||A Viewport mask. A bit mask for rendering the Field Weather object into the current viewport. For the Field Weather object to be rendered into the viewport, its mask should match the camera Viewport mask.|
|Size||Size of the Field Weather object along the axes in units.|
Setting Clouds Parameters#
|Attenuation Type||Type of attenuation shape. This parameters determines the way the local clouds of the Field Weather object are mixed with the surrounding clouds. Can be one of the following:
|Attenuation||Attenuation factor indicating how much the coverage texture attenuates starting from the center of the Field Weather object to its edges.
|Power||Determines the contrast of the coverage texture. Makes it possible to gradually increase cloudiness without changing the coverage texture. This parameter is analogous to Coverage Contrast parameter of the clouds_base material.
For this parameter to work properly, the coverage texture must not contain absolutely black pixels.
|Intensity||Determines the degree of impact of the coverage texture of the Field Weather object on the clouds.|
|Coverage texture||An RGB8 coverage texture for the Field Weather object. This texture is similar to the coverage texture of the clouds_base material.|
|Wind Enabled||Indicates whether the local wind inside the Field Weather object is enabled.|
|Wind||Wind speed in each direction inside the Field Weather object. The wind along X and Y axes shifts local coverage texture at the specified rates in the corresponding directions. This parameter can be used to animate clouds inside the Field Weather object. The texture shifting is looped inside the object, as the wind affects only its offset.
Setting wind speed values to zero does not return the texture to its initial state. In order to return the initial state disable local wind by unchecking the Wind enabled option.