P3D Model Info

Model Info

The Model Info structure is last in file for ODOL7 (ofp) and at top of file for ODOL4x (ARMAx)

ModelInfo
{
  float      LodTypes[Header.NoOfLods];// alias resolutions
  ulong      Index;                    // appears to be a bit flag, 512, 256 eg
  float      Sphere1;
  float      Sphere2;                  // mostly same as Sphere1
  ulong      PointFlags[3];            // typically 00 00 00 00  00 00 00 00 00 00 0C 00 eg (last is same as user point flags)
  XYZTriplet Offset;                   // model offset (unknown functionality),//mostly same as offset2
  ulong      mapIconColor;             // RGBA 32 color
  ulong      mapSelectedColor;         // RGBA 32 color
  float      ViewDensity;              //
  XYZTriplet bboxMinPosition;          // minimum coordinates of bounding box
  XYZTriplet bboxMaxPosition;          // maximum coordinates of bounding box. Generally the complement of the 1st
                                       // Resolution&GeometryBounds in Pew is bboxMinPosition-bboxMaxPosition for X and Z
  XYZTriplet WrpModelOffset;           // Resolution&GeometryAutoCenterPos in pew
  XYZTriplet Offset2;                  // mostly same as Offset often same as ModelCentreOfGravity
  XYZTriplet ModelCentreOfGravity;     //
  XYZTriplet ModelMassVectors[3];      // for ODOL7 this is a mixture of floats and index values
  TinyBool   AutoCenter,
             lockAutoCenter,
             canOcclude,
             canBeOccluded,
             allowAnimation;
  ///////////ARMA (V4x) ONLY ////////////
  bytes      UnknownARMAFlags[6];      //
  byte       ThermalProfile[24];       // Arma2 only (43,47,48 & VBS2)
  ulong      UnknownLong;              // V48 only
  Skeleton   Skeleton;                 //
  ///////////////////////////////////////
  byte       UnknownByte;
  ulong      nFloats;                  // always zero for arma
  float      UnknownFloats[nFloats];   // potentially compressed
  float      Mass;                     
  float      MassReciprocal;           
  float      AltMass;                  
  float      AltMassReciprocal;        
  byte       UnknownByteIndices[12]    // generally FF FF FF FF FF FF FF FF FF FF FF FF
  ///////////ARMA (V4x) ONLY ////////////
  ulong      UnknownLong;              // often same as lodcount
  TinyBool   UnknownBool;              // generally set if ascii below has strings
  asciiz     ClassType;                // class="" or "House" or...
  asciiz     DestructType;             // damage="" or "Tent" or "Building",,,,
  TinyBool   UnknownBool2;             // rarely true
  ulong      Always0;                  //
  ///////////////////////////////////////
}

Skeleton

 Skeleton
 {
   asciiz                    SkeletonName;  //"A10Skeleton"
   if (SkeletonName != null)
   {
     tbool                   isInherited;
     ulong                   NoOfBoneNames;
     SkeletonBoneName        SkeletonBoneNames[NoOfBoneNames];
     if (type>40) // ie arma2
     {
     byte                    Always0;
     }
   }
 }

SkeletonBoneName

 SkeletonBoneName
 {
   asciiz BoneName;            //"3dhud" or "Gearlocks" or "Fuel" or ...
   asciiz ParentBoneName;      // "Aeileron_1"
 }

corresponds to model.cfg

 class cfgSkeletons
 {
	class SkeletonClassname: Default
	{
		skeletonBones[]=
		{
			"RightDoor1","",
			"RightDoor2","",
			"LeftDoor1","",
			"LeftDoor2","RightDoor2",
			etc"
		};
	};

LodTypes

LodTypes are resolutions. Most of them have humanly readable context such as the 'memory' lod. And are selected as such in Oxygen. The are consequently referred to here as 'LodTypes', since the floating point values, although relevant to the engine, are not as immediately apparent to a human.

• Lods in the file are highest to lowest. The lowest resolution (eg. Resolution 1.0) will be the last in the file.

• Start and ending addresses are random (not sorted). The LodTypes array declares which Lod an address-pair is referring to.

Thus, if the first Lodtype entry(eg) specifies a resolution of 1.0e13 (a geometry lod), that lod is located via the 1st Starting address. It is NOT, necessarily, the 1st lod in the file.

Resolution Values

Hex	Float	Decimal	Description
		<1,000	Graphical Lod
			Functional Lods
0x447a0000	1.0e3	1,000	View Gunner
0x44898000	1.1e3	1,100	View Pilot
0x44960000	1.2e3	1,200	View Cargo
""	""		Shadow Lods
0x461c4000	1.0e4	10,000	Stencil Shadow
0x461c6800	1.001e4	10,010	Stencil Shadow 2
0x462be000	1.1e4	11000	Shadow Volume
0x462c0800	1.101e4	11010	Shadow Volume 2
0x551184e7	1.0e13	10,000,000,000,000	Geometry
0x58635fa9	1.0e15	1,000,000,000,000,000	Memory
0x58e35fa9	2.0e15	2,000,000,000,000,000	Land Contact
0x592a87bf	3.0e15	3,000,000,000,000,000	Roadway
0x59635fa9	4.0e15	4,000,000,000,000,000	Paths
0x598e1bca	5.0e15	5,000,000,000,000,000	HitPoints
0x59aa87bf	6.0e15	6,000,000,000,000,000	View Geometry
0x59c6f3b4	7.0e15	7,000,000,000,000,000	Fire Geometry
0x59e35fa9	8.0e15	8,000,000,000,000,000	View Cargo Geometry
0x59ffcb9e	9.0e15	9,000,000,000,000,000	View Cargo Fire Geometry
0x5a0e1bca	1.0e16	10,000,000,000,000,000	View Commander
0x5a1c51c4	1.1e16	11,000,000,000,000,000	View Commander Geometry
0x5a2a87bf	1.2e16	12,000,000,000,000,000	View Commander Fire Geometry
0x5a38bdb9	1.3e16	13,000,000,000,000,000	View Pilot Geometry
0x5a46f3b4	1.4e16	14,000,000,000,000,000	View Pilot Fire Geometry
0x5a5529af	1.5e16	15,000,000,000,000,000	View Gunner Geometry
0x5a635fa9	1.6e16	16,000,000,000,000,000	View Gunner Fire Geometry
0x5a7195a4	1.7e16	17,000,000,000,000,000	Sub Parts

If the value is below 1000.0, then the LOD is supposed to be a graphical LOD. If the value equals or is above 10000.0 and is not one of the functional LODs, it is a shadow LOD.

The LOD selected for displaying if

DistanceToObject * LODCoef * M <= LODResolution 

Where:

• LODCoef is value from OFP preferences (I have LODCoef = 0.019).
• M is some value that changed by OFP developers (I use M=1 in WRPEdit and M=2 in P3DEdit).

Related Page(s)

Model File Formats