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3D clouds: Difference between revisions
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[[Image:3D_clouds.jpg|thumb|270px|3D clouds in [[OSG]] version as seen from a [[EC135]].]] | [[Image:3D_clouds.jpg|thumb|270px|3D clouds in [[OSG]] version as seen from a [[EC135]].]] | ||
[[Image:Clouds2 2006-06-23.jpg|thumb|270px|3D clouds in [[PLIB]] version]] | [[Image:Clouds2 2006-06-23.jpg|thumb|270px|3D clouds in [[PLIB]] version]] | ||
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When FlightGear switched from [[PLIB]] to [[OSG]] the 3D clouds were temporarily lost. Currently efforts are going on to re-implement the clouds. As of October 2008 the clouds are back and committed to [[FlightGear CVS]]. | When FlightGear switched from [[PLIB]] to [[OSG]] the 3D clouds were temporarily lost. Currently efforts are going on to re-implement the clouds. As of October 2008 the clouds are back and committed to [[FlightGear CVS]]. | ||
==Cloud shapes and layers== | |||
A 3D cloud layer is defined in the <layers> section. It contains of a number of randomly located <boxes>, containing a set of <clouds>. | |||
Each cloud is generate with random size, based on the following tags: | |||
<min-cloud-width-m> | |||
<max-cloud-width-m> | |||
<min-cloud-height-m> | |||
<max-cloud-height-m> | |||
The cloud consists of <num-sprites> individual sprites. | |||
Each sprite is generated with random size, based on the following tags: | |||
<min-sprite-width-m> | |||
<max-sprite-width-m> | |||
<min-sprite-height-m> | |||
<max-sprite-height-m> | |||
The <texture> defines the texture file to be used for the sprite. The texture file may contain more than one texture in a grid, by setting the <num-textures-x> and <num-textures-y> tags. | |||
Cloud are darker towards the bottom. bottom-shade indicates the shading factor of the bottom of the cloud compared with the top. | |||
==External links== | ==External links== | ||