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Move more meshing to MeshBuilder

This commit is contained in:
Jarrod Doyle 2024-12-09 08:34:48 +00:00
parent a0b287b9fa
commit adf61c0f6f
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
2 changed files with 144 additions and 131 deletions
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136
KeepersCompound.Lightmapper/LightMapper.cs
View File

@ -112,142 +112,18 @@ public class LightMapper
private Mesh BuildMesh()
{
var meshBuilder = new MeshBuilder();
// TODO: Should this throw?
// TODO: Only do object polys if objcast lighting?
if (!_mission.TryGetChunk<WorldRep>("WREXT", out var worldRep) ||
!_mission.TryGetChunk<BrList>("BRLIST", out var brList))
{
return new Mesh(0, [], [], []);
}
var meshBuilder = new MeshBuilder();
var polyVertices = new List<Vector3>();
// Worldrep mesh
foreach (var cell in worldRep.Cells)
{
var numPolys = cell.PolyCount;
var numRenderPolys = cell.RenderPolyCount;
var numPortalPolys = cell.PortalPolyCount;
// There's nothing to render
if (numRenderPolys == 0 || numPortalPolys >= numPolys)
{
continue;
}
var solidPolys = numPolys - numPortalPolys;
var cellIdxOffset = 0;
for (var polyIdx = 0; polyIdx < numRenderPolys; polyIdx++)
{
var poly = cell.Polys[polyIdx];
polyVertices.Clear();
polyVertices.EnsureCapacity(poly.VertexCount);
for (var i = 0; i < poly.VertexCount; i++)
{
polyVertices.Add(cell.Vertices[cell.Indices[cellIdxOffset + i]]);
}
// We need to know what type of surface this poly is so we can map Embree primitive IDs to surface
// types
var renderPoly = cell.RenderPolys[polyIdx];
var primType = SurfaceType.Solid;
if (renderPoly.TextureId == 249)
{
primType = SurfaceType.Sky;
} else if (polyIdx >= solidPolys)
{
primType = SurfaceType.Water;
}
meshBuilder.AddPolygon(polyVertices, primType);
cellIdxOffset += poly.VertexCount;
}
}
// Object meshes
foreach (var brush in brList.Brushes)
{
if (brush.media != BrList.Brush.Media.Object)
{
continue;
}
var id = (int)brush.brushInfo;
var modelNameProp = _hierarchy.GetProperty<PropLabel>(id, "P$ModelName");
var scaleProp = _hierarchy.GetProperty<PropVector>(id, "P$Scale");
var renderTypeProp = _hierarchy.GetProperty<PropRenderType>(id, "P$RenderTyp");
var jointPosProp = _hierarchy.GetProperty<PropJointPos>(id, "P$JointPos");
var immobileProp = _hierarchy.GetProperty<PropBool>(id, "P$Immobile");
var staticShadowProp = _hierarchy.GetProperty<PropBool>(id, "P$StatShad");
var joints = jointPosProp?.Positions ?? [0, 0, 0, 0, 0, 0];
var castsShadows = (immobileProp?.value ?? false) || (staticShadowProp?.value ?? false);
var renderMode = renderTypeProp?.mode ?? PropRenderType.Mode.Normal;
// TODO: Check which rendermodes cast shadows :)
if (modelNameProp == null || !castsShadows || renderMode == PropRenderType.Mode.CoronaOnly)
{
continue;
}
// Let's try and place an object :)
var modelName = modelNameProp.value.ToLower() + ".bin";
var modelPath = _campaign.GetResourcePath(ResourceType.Object, modelName);
if (modelPath == null)
{
continue;
}
// TODO: Handle failing to find model more gracefully
var pos = brush.position;
var rot = brush.angle;
var scale = scaleProp?.value ?? Vector3.One;
var model = new ModelFile(modelPath);
pos -= model.Header.Center;
// for each object modify the vertices
// TODO: Almost perfect transform!
// TODO: Handle nested sub objects
foreach (var subObj in model.Objects)
{
var jointTrans = Matrix4x4.Identity;
if (subObj.Joint != -1)
{
var ang = float.DegreesToRadians(joints[subObj.Joint]);
var jointRot = Matrix4x4.CreateFromYawPitchRoll(0, ang, 0);
var objTrans = subObj.Transform;
jointTrans = jointRot * objTrans;
}
var scalePart = Matrix4x4.CreateScale(scale);
var rotPart = Matrix4x4.CreateFromYawPitchRoll(float.DegreesToRadians(rot.Y), float.DegreesToRadians(rot.X),
float.DegreesToRadians(rot.Z));
var transPart = Matrix4x4.CreateTranslation(pos);
var transform = jointTrans * scalePart * rotPart * transPart;
var start = subObj.PointIdx;
var end = start + subObj.PointCount;
for (var i = start; i < end; i++)
{
var v = model.Vertices[i];
model.Vertices[i] = Vector3.Transform(v, transform);
}
}
// for each polygon slam its vertices and indices :)
foreach (var poly in model.Polygons)
{
polyVertices.Clear();
polyVertices.EnsureCapacity(poly.VertexCount);
foreach (var idx in poly.VertexIndices)
{
polyVertices.Add(model.Vertices[idx]);
}
meshBuilder.AddPolygon(polyVertices, SurfaceType.Solid);
}
return meshBuilder.Build();
}
meshBuilder.AddWorldRepPolys(worldRep);
meshBuilder.AddObjectPolys(brList, _hierarchy, _campaign);
return meshBuilder.Build();
}

139
KeepersCompound.Lightmapper/MeshBuilder.cs
View File

@ -1,4 +1,7 @@
using System.Numerics;
using KeepersCompound.LGS;
using KeepersCompound.LGS.Database;
using KeepersCompound.LGS.Database.Chunks;
namespace KeepersCompound.Lightmapper;
@ -24,7 +27,141 @@ public class MeshBuilder
private readonly List<int> _indices = [];
private readonly List<SurfaceType> _primSurfaceMap = [];
public void AddPolygon(List<Vector3> vertices, SurfaceType surfaceType)
public void AddWorldRepPolys(WorldRep worldRep)
{
var polyVertices = new List<Vector3>();
foreach (var cell in worldRep.Cells)
{
var numPolys = cell.PolyCount;
var numRenderPolys = cell.RenderPolyCount;
var numPortalPolys = cell.PortalPolyCount;
// There's nothing to render
if (numRenderPolys == 0 || numPortalPolys >= numPolys)
{
continue;
}
var solidPolys = numPolys - numPortalPolys;
var cellIdxOffset = 0;
for (var polyIdx = 0; polyIdx < numRenderPolys; polyIdx++)
{
var poly = cell.Polys[polyIdx];
polyVertices.Clear();
polyVertices.EnsureCapacity(poly.VertexCount);
for (var i = 0; i < poly.VertexCount; i++)
{
polyVertices.Add(cell.Vertices[cell.Indices[cellIdxOffset + i]]);
}
// We need to know what type of surface this poly is so we can map Embree primitive IDs to surface
// types
var renderPoly = cell.RenderPolys[polyIdx];
var primType = SurfaceType.Solid;
if (renderPoly.TextureId == 249)
{
primType = SurfaceType.Sky;
} else if (polyIdx >= solidPolys)
{
primType = SurfaceType.Water;
}
AddPolygon(polyVertices, primType);
cellIdxOffset += poly.VertexCount;
}
}
}
public void AddObjectPolys(
BrList brushList,
ObjectHierarchy hierarchy,
ResourcePathManager.CampaignResources campaignResources)
{
var polyVertices = new List<Vector3>();
foreach (var brush in brushList.Brushes)
{
if (brush.media != BrList.Brush.Media.Object)
{
continue;
}
var id = (int)brush.brushInfo;
var modelNameProp = hierarchy.GetProperty<PropLabel>(id, "P$ModelName");
var scaleProp = hierarchy.GetProperty<PropVector>(id, "P$Scale");
var renderTypeProp = hierarchy.GetProperty<PropRenderType>(id, "P$RenderTyp");
var jointPosProp = hierarchy.GetProperty<PropJointPos>(id, "P$JointPos");
var immobileProp = hierarchy.GetProperty<PropBool>(id, "P$Immobile");
var staticShadowProp = hierarchy.GetProperty<PropBool>(id, "P$StatShad");
var joints = jointPosProp?.Positions ?? [0, 0, 0, 0, 0, 0];
var castsShadows = (immobileProp?.value ?? false) || (staticShadowProp?.value ?? false);
var renderMode = renderTypeProp?.mode ?? PropRenderType.Mode.Normal;
// TODO: Check which rendermodes cast shadows :)
if (modelNameProp == null || !castsShadows || renderMode == PropRenderType.Mode.CoronaOnly)
{
continue;
}
// Let's try and place an object :)
var modelName = modelNameProp.value.ToLower() + ".bin";
var modelPath = campaignResources.GetResourcePath(ResourceType.Object, modelName);
if (modelPath == null)
{
continue;
}
// TODO: Handle failing to find model more gracefully
var pos = brush.position;
var rot = brush.angle;
var scale = scaleProp?.value ?? Vector3.One;
var model = new ModelFile(modelPath);
pos -= model.Header.Center;
// for each object modify the vertices
// TODO: Almost perfect transform!
// TODO: Handle nested sub objects
foreach (var subObj in model.Objects)
{
var jointTrans = Matrix4x4.Identity;
if (subObj.Joint != -1)
{
var ang = float.DegreesToRadians(joints[subObj.Joint]);
var jointRot = Matrix4x4.CreateFromYawPitchRoll(0, ang, 0);
var objTrans = subObj.Transform;
jointTrans = jointRot * objTrans;
}
var scalePart = Matrix4x4.CreateScale(scale);
var rotPart = Matrix4x4.CreateFromYawPitchRoll(float.DegreesToRadians(rot.Y), float.DegreesToRadians(rot.X),
float.DegreesToRadians(rot.Z));
var transPart = Matrix4x4.CreateTranslation(pos);
var transform = jointTrans * scalePart * rotPart * transPart;
var start = subObj.PointIdx;
var end = start + subObj.PointCount;
for (var i = start; i < end; i++)
{
var v = model.Vertices[i];
model.Vertices[i] = Vector3.Transform(v, transform);
}
}
// for each polygon slam its vertices and indices :)
foreach (var poly in model.Polygons)
{
polyVertices.Clear();
polyVertices.EnsureCapacity(poly.VertexCount);
foreach (var idx in poly.VertexIndices)
{
polyVertices.Add(model.Vertices[idx]);
}
AddPolygon(polyVertices, SurfaceType.Solid);
}
}
}
private void AddPolygon(List<Vector3> vertices, SurfaceType surfaceType)
{
var vertexCount = vertices.Count;
var indexOffset = _vertices.Count;