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ofp:modeling:lod

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ofp:modeling:lod [2007/07/12 23:59] – added some stuff snakemanofp:modeling:lod [2024/07/31 16:07] (current) – links added. snakeman
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-====== Level of Detail (LOD) ======+====== OFP Level of Detail (LOD) ====== 
 + 
 +[[https://www.pmctactical.org/forum/viewforum.php?f=43|OFP Forum]], [[:ofp|OFP Home]], [[ofp:file_formats|OFP File Formats]], [[ofp:tools|OFP Tools]], [[ofp:missions|OFP Missions]], [[ofp:modeling|OFP 3D Modeling]], [[ofp:terrain|OFP Terrain]] 
 + 
 +**Operation Flashpoint (OFP)** aka ArmA: Cold War Assault (CWA)
  
 What's a LOD? What's a LOD?
-{{ http://tactical.nekromantix.com/images/wiki/LODs.gif}}+ 
 +{{https://pmc.editing.wiki/images/LODs.gif}} 
 LOD means Level of Detail, and is a method of defining, via different variations of a model, how high or low the viewable quality of the model should be, and how it should interact with the environment. LOD means Level of Detail, and is a method of defining, via different variations of a model, how high or low the viewable quality of the model should be, and how it should interact with the environment.
  
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 ====== <resolution> ====== ====== <resolution> ======
  
-{{ http://tactical.nekromantix.com/images/wiki/Truck-ResLOD.jpg}}+{{ https://pmc.editing.wiki/images/Truck-ResLOD.jpg}}
 Defines which model to use, depending on several, interdependent in-game conditions (view-distance, number of objects, video quality, CPU utilization, etc). Defines which model to use, depending on several, interdependent in-game conditions (view-distance, number of objects, video quality, CPU utilization, etc).
  
 This LOD shouldn't contain any empty Named Selections which are used in animations or by the game engine (wheels, etc), as that might cause the game to crash once the LOD becomes active. This LOD shouldn't contain any empty Named Selections which are used in animations or by the game engine (wheels, etc), as that might cause the game to crash once the LOD becomes active.
  
-To demonstrate the complexity of the LOD selection, and the effect the resolution name has on LOD switching, a series of tests have been documented here: Resolution LOD Samples+To demonstrate the complexity of the LOD selection, and the effect the resolution name has on LOD switching, a series of tests have been documented here: Resolution LOD Samples. 
 + 
 +If all your LODs (or if you only have one) are high polygon count, then your model will cause CPU slowdowns.
  
 ===== Details ===== ===== Details =====
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 </code> </code>
  
-BIS M2A2 model has the following resolution LODs: +BIS M2A2 model has the following resolution LODs:
  
 <code> <code>
-LOD A (0.750): ~3400  +LOD A (0.750): ~3400 
-LOD B (1.5): ~1900  +LOD B (1.5): ~1900 
-LOD C (3): ~1100  +LOD C (3): ~1100 
-LOD D (5): ~560  +LOD D (5): ~560 
-LOD E (7): ~375 +LOD E (7): ~375
 LOD F (9): ~175 LOD F (9): ~175
 </code> </code>
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 Notice how the resolution values double for all values lower than 3. When the resolution value reaches 3, it is increased by steps of 2. Generally speaking, this means that the model detail halves whenever CPU load doubles. For lower details, declination in detail (and thus CPU load) decreases exponentially. Notice how the resolution values double for all values lower than 3. When the resolution value reaches 3, it is increased by steps of 2. Generally speaking, this means that the model detail halves whenever CPU load doubles. For lower details, declination in detail (and thus CPU load) decreases exponentially.
  
-If you have a vertex count that is very different from the BIS values, you can try to estimate a fitting resolution value for that LOD. Remember that more vertices = lower resolution value. +If you have a vertex count that is very different from the BIS values, you can try to estimate a fitting resolution value for that LOD. Remember that more vertices = lower resolution value.
  
 For resolution values under 3, you should halve the resolution value each time you double the number of vertices. For resolution values over 3, subtract 2 each time you double the number of vertices. Performance-wise, lower resolution values increase system performance. For resolution values under 3, you should halve the resolution value each time you double the number of vertices. For resolution values over 3, subtract 2 each time you double the number of vertices. Performance-wise, lower resolution values increase system performance.
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 JeepMG : 0.750, 1.5, 3, 5 and 7. JeepMG : 0.750, 1.5, 3, 5 and 7.
 </code> </code>
 +
  
 ====== Geometry ====== ====== Geometry ======
  
-{{ http://tactical.nekromantix.com/images/wiki/Truck-GeoLOD.gif}} +{{https://pmc.editing.wiki/images/Truck-GeoLOD.gif}}
-Defines where the model will collide with other objects.\\ +
-Should be //very// simple, and has to fulfil the following criteria in order to work:\\ +
-* Object must be Named Selection ComponentXX (where XX is a consecutive number between 01 and 99).\\ +
-* Must have 'Mass' (Alt-M).\\ +
-* Must be closed and convex (Validating Geometries).\\ +
-Geometry objects should have a thickness of at least .5 meters in order to work properly.+
  
 +Defines where the model will collide with other objects. Should be //very// simple, and has to fulfil the following criteria in order to work:
 +  * Object must be Named Selection ComponentXX (where XX is a consecutive number between 01 and 99).
 +  * Must have 'Mass' (**ALT-M**).
 +  * Must be closed and convex (Validating Geometries).
 +
 +Geometry objects should have a thickness of at least .5 meters in order to work properly.
  
 ====== Fire Geometry ====== ====== Fire Geometry ======
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 ====== View - Cargo ====== ====== View - Cargo ======
  
-{{ http://tactical.nekromantix.com/images/wiki/Truck-View-Cargo.jpg}} +{{ https://pmc.editing.wiki/images/Truck-View-Cargo.jpg}} 
-What a cargo passenger can see of the model. +What a cargo passenger can see of the model.
  
 In vehicles of the class "Car", the player will ''always'' see this view, whether he's the driver, co-driver or cargo. (Unless the "View - Pilot" is defined. Then ''that'' view is taken for any position inside the vehicle.) In vehicles of the class "Car", the player will ''always'' see this view, whether he's the driver, co-driver or cargo. (Unless the "View - Pilot" is defined. Then ''that'' view is taken for any position inside the vehicle.)
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 ArmA/OFPE only: Visible shadow resolution lod for model. Typically named ShadowVolume 0.000 (Few features) and ShadowVolume 0.100 (same ammount of features as the main visual model (i.e. equipment, weapon systems, etc). Structure within it **must** be Triangulated and have Sharp edges. (Also see Creating Shadow LODs) ArmA/OFPE only: Visible shadow resolution lod for model. Typically named ShadowVolume 0.000 (Few features) and ShadowVolume 0.100 (same ammount of features as the main visual model (i.e. equipment, weapon systems, etc). Structure within it **must** be Triangulated and have Sharp edges. (Also see Creating Shadow LODs)
 +
ofp/modeling/lod.1184284767.txt.gz · Last modified: 2007/07/12 23:59 (external edit)
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