public static bool TryConvert(this UStaticMesh originalMesh, out CStaticMesh convertedMesh)
{
convertedMesh = new CStaticMesh();
if (originalMesh.RenderData == null)
{
return(false);
}
convertedMesh.BoundingSphere = new FSphere(0f, 0f, 0f, originalMesh.RenderData.Bounds.SphereRadius / 2);
convertedMesh.BoundingBox = new FBox(
originalMesh.RenderData.Bounds.Origin - originalMesh.RenderData.Bounds.BoxExtent,
originalMesh.RenderData.Bounds.Origin + originalMesh.RenderData.Bounds.BoxExtent);
foreach (var srcLod in originalMesh.RenderData.LODs)
{
if (srcLod.SkipLod)
{
continue;
}
var numTexCoords = srcLod.VertexBuffer !.NumTexCoords;
var numVerts = srcLod.PositionVertexBuffer !.Verts.Length;
if (numVerts == 0 && numTexCoords == 0)
{
continue;
}
if (numTexCoords > Constants.MAX_MESH_UV_SETS)
{
throw new ParserException($"Static mesh has too many UV sets ({numTexCoords})");
}
var staticMeshLod = new CStaticMeshLod
{
NumTexCoords = numTexCoords,
HasNormals = true,
HasTangents = true,
Indices = new Lazy <FRawStaticIndexBuffer>(srcLod.IndexBuffer !),
Sections = new Lazy <CMeshSection[]>(() =>
{
var sections = new CMeshSection[srcLod.Sections.Length];
for (var j = 0; j < sections.Length; j++)
{
sections[j] = new CMeshSection(srcLod.Sections[j].MaterialIndex,
originalMesh.StaticMaterials?[srcLod.Sections[j].MaterialIndex].MaterialSlotName.Text, // materialName
originalMesh.Materials?[srcLod.Sections[j].MaterialIndex], // material
srcLod.Sections[j].FirstIndex, // firstIndex
srcLod.Sections[j].NumTriangles); // numFaces
}
return(sections);
})
};
staticMeshLod.AllocateVerts(numVerts);
if (srcLod.ColorVertexBuffer !.NumVertices != 0)
{
staticMeshLod.AllocateVertexColorBuffer();
}
for (var j = 0; j < numVerts; j++)
{
var suv = srcLod.VertexBuffer.UV[j];
if (suv.Normal[1].Data != 0)
{
throw new ParserException("Not implemented: should only be used in UE3");
}
staticMeshLod.Verts[j].Position = srcLod.PositionVertexBuffer.Verts[j];
UnpackNormals(suv.Normal, staticMeshLod.Verts[j]);
staticMeshLod.Verts[j].UV.U = suv.UV[0].U;
staticMeshLod.Verts[j].UV.V = suv.UV[0].V;
for (var k = 1; k < numTexCoords; k++)
{
staticMeshLod.ExtraUV.Value[k - 1][j].U = suv.UV[k].U;
staticMeshLod.ExtraUV.Value[k - 1][j].V = suv.UV[k].V;
}
if (srcLod.ColorVertexBuffer.NumVertices != 0)
{
staticMeshLod.VertexColors ![j] = srcLod.ColorVertexBuffer.Data[j];
public static bool TryConvert(this UStaticMesh originalMesh, out CStaticMesh convertedMesh)
{
convertedMesh = new CStaticMesh();
if (originalMesh.RenderData == null)
{
return(false);
}
convertedMesh.BoundingShere = new FSphere(0f, 0f, 0f, originalMesh.RenderData.Bounds.SphereRadius / 2);
convertedMesh.BoundingBox = new FBox(
originalMesh.RenderData.Bounds.Origin - originalMesh.RenderData.Bounds.BoxExtent,
originalMesh.RenderData.Bounds.Origin + originalMesh.RenderData.Bounds.BoxExtent);
var numLods = originalMesh.RenderData.LODs.Length;
convertedMesh.LODs = new CStaticMeshLod[numLods];
for (var i = 0; i < convertedMesh.LODs.Length; i++)
{
if (originalMesh.RenderData.LODs[i] is not
{
VertexBuffer: not null,
PositionVertexBuffer: not null,
ColorVertexBuffer: not null,
IndexBuffer: not null
} srcLod)
{
continue;
}
var numTexCoords = srcLod.VertexBuffer.NumTexCoords;
var numVerts = srcLod.PositionVertexBuffer.Verts.Length;
if (numVerts == 0 && numTexCoords == 0 && i < numLods - 1)
{
Log.Logger.Debug($"LOD {i} is stripped, skipping...");
continue;
}
if (numTexCoords > _MAX_MESH_UV_SETS)
{
throw new ParserException($"Static mesh has too many UV sets ({numTexCoords})");
}
convertedMesh.LODs[i] = new CStaticMeshLod
{
NumTexCoords = numTexCoords,
HasNormals = true,
HasTangents = true,
Indices = new Lazy <FRawStaticIndexBuffer>(srcLod.IndexBuffer),
Sections = new Lazy <CMeshSection[]>(() =>
{
var sections = new CMeshSection[srcLod.Sections.Length];
for (var j = 0; j < sections.Length; j++)
{
sections[j] = new CMeshSection(originalMesh.Materials?[srcLod.Sections[j].MaterialIndex],
srcLod.Sections[j].FirstIndex, srcLod.Sections[j].NumTriangles);
}
return(sections);
})
};
convertedMesh.LODs[i].AllocateVerts(numVerts);
if (srcLod.ColorVertexBuffer.NumVertices != 0)
{
convertedMesh.LODs[i].AllocateVertexColorBuffer();
}
for (var j = 0; j < numVerts; j++)
{
var suv = srcLod.VertexBuffer.UV[j];
if (suv.Normal[1].Data != 0)
{
throw new ParserException("Not implemented: should only be used in UE3");
}
convertedMesh.LODs[i].Verts[j].Position = srcLod.PositionVertexBuffer.Verts[j];
UnpackNormals(suv.Normal, convertedMesh.LODs[i].Verts[j]);
convertedMesh.LODs[i].Verts[j].UV.U = suv.UV[0].U;
convertedMesh.LODs[i].Verts[j].UV.V = suv.UV[0].V;
for (var k = 1; k < numTexCoords; k++)
{
convertedMesh.LODs[i].ExtraUV.Value[k - 1][j].U = suv.UV[k].U;
convertedMesh.LODs[i].ExtraUV.Value[k - 1][j].V = suv.UV[k].V;
}
if (srcLod.ColorVertexBuffer.NumVertices != 0)
convertedMesh.LODs[i].VertexColors[j] = srcLod.ColorVertexBuffer.Data[j];
}
}
convertedMesh.FinalizeMesh();
return(true);
}
