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lighting [2017/09/13 10:10]
titterton created
lighting [2017/09/13 12:47] (current)
titterton
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 ===Gizmo=== ===Gizmo===
 {{ ::​light.png?​nolink&​200|}} {{ ::​light.png?​nolink&​200|}}
-The light object itself sits in the top-right corner of the [[tooltree_window|Tree Window]]. When you click it, you are presented with a gizmo to rotate it, and thus affect the directional lighting in the scene.+The light object itself sits in the top-right corner of the [[tree_window|Tree Window]]. When you click it, you are presented with a gizmo to rotate it, and thus affect the directional lighting in the scene.
  
-Selecting the light will also show the [[light|Light Properties]] in the [[toolpropertybar|Property Bar]], where you can edit all the other lighting information. Right clicking on the light will also present a contextual menu with shortcuts to many lighting options.+Selecting the light will also show the [[light|Light Properties]] in the [[property_bar|Property Bar]], where you can edit all the other lighting information. Right clicking on the light will also present a contextual menu with shortcuts to many lighting options.
  
->​**Note**:​ A shortcut for rotating the light gizmo relative to the current view is to hold the '​V'​ key and click & drag the mouse in the [[tooltree_window|Tree Window]].+>​**Note**:​ A shortcut for rotating the light gizmo relative to the current view is to hold the '​V'​ key and click & drag the mouse in the [[tree_window|Tree Window]].
  
 ===Color/​Intensity=== ===Color/​Intensity===
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 The color and intensity of the ambient light can be adjusted in the [[light|Light Properties]] when the light is selected. Lighting presets are also available to quickly switch between lighting scenarios. The color and intensity of the ambient light can be adjusted in the [[light|Light Properties]] when the light is selected. Lighting presets are also available to quickly switch between lighting scenarios.
  
-Ambient light uses three colors to set up the environment:​ sky, horizon, and ground. These colors are interpolated to form the sky and ground in the background of the [[tooltree_window|Tree Window]].+Ambient light uses three colors to set up the environment:​ sky, horizon, and ground. These colors are interpolated to form the sky and ground in the background of the [[tree_window|Tree Window]].
  
 ===Ambient Occlusion=== ===Ambient Occlusion===
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 Ambient light comes from all directions at once. But similar to how directional light can cast shadows, parts of the tree should be "​shadowed"​ from ambient light. This technique is referred to as "​ambient occlusion"​ or "​AO"​. ​ Ambient light comes from all directions at once. But similar to how directional light can cast shadows, parts of the tree should be "​shadowed"​ from ambient light. This technique is referred to as "​ambient occlusion"​ or "​AO"​. ​
  
-AO will darken crevices and the interior of a tree, giving it much more realistic lighting. You can also use an [[materialspbr|ambient occlusion map]] to further refine AO on a per-material basis.+AO will darken crevices and the interior of a tree, giving it much more realistic lighting. You can also use an [[materials_pbr|ambient occlusion map]] to further refine AO on a per-material basis.
  
-Calculating AO is fairly quick, but it is not something that can be done all the time. You can compute it by clicking the "​Ambient Occlusion:​Render"​ button in the [[light|Light Properties]],​ or by merely hitting '​O'​ in the [[tooltree_window|Tree Window]]. Editing the geometry of a tree will invalidate AO until the next calculation,​ though AO is computed when the tree is first loaded.+Calculating AO is fairly quick, but it is not something that can be done all the time. You can compute it by clicking the "​Ambient Occlusion:​Render"​ button in the [[light|Light Properties]],​ or by merely hitting '​O'​ in the [[tree_window|Tree Window]]. Editing the geometry of a tree will invalidate AO until the next calculation,​ though AO is computed when the tree is first loaded.
  
 With default settings, AO will most likely do a good job. However, you can further refine the effects of AO by modifying the "​Brightness",​ "​Contrast",​ "​Min",​ and "​Max"​ properties. Generally you want the very outside parts of the tree to be fully white. The interior of the tree should be dark but not black. The depth of the dark interior is up to the artist, depending on how dense and enclosed the tree is. With default settings, AO will most likely do a good job. However, you can further refine the effects of AO by modifying the "​Brightness",​ "​Contrast",​ "​Min",​ and "​Max"​ properties. Generally you want the very outside parts of the tree to be fully white. The interior of the tree should be dark but not black. The depth of the dark interior is up to the artist, depending on how dense and enclosed the tree is.