static unsafe void TransformVertices(byte[] vertices, MeshData.MeshGeometryFormat format, Matrix4 matrix, Quaternion rotation)
{
fixed(byte *ptr = vertices)
{
int count = vertices.Length / format.vertexSize;
for (int i = 0; i < count; i++)
{
byte * vertexStart = ptr + i * format.vertexSize;
Vector3F *posPtr = (Vector3F *)(vertexStart + format.positionOffset);
* posPtr = (*posPtr * matrix).ToVector3F();
Vector3F *normalPtr = (Vector3F *)(vertexStart + format.normalOffset);
* normalPtr = (*normalPtr * rotation).ToVector3F();
Vector4F *tangentPtr = (Vector4F *)(vertexStart + format.tangentOffset);
* tangentPtr = new Vector4F(((*tangentPtr).ToVector3F() * rotation).ToVector3F(), (*tangentPtr).W);
}
}
}
//static byte[] ToVertices( Net3dBool.Vector3[] vertices, MeshData.MeshGeometryFormat vs )
//{
// byte[] ret = new byte[ vertices.Length * vs.vertexSize ];
// unsafe
// {
// fixed ( byte* ptr = ret )
// {
// for( int i = 0; i < vertices.Length; i++ )
// {
// var v = vertices[ i ];
// var pos = (Vector3F*)( ptr + i * vs.vertexSize + vs.positionOffset );
// ( *pos ) = new Vector3F( (float)v.x, (float)v.y, (float)v.z );
// }
// }
// }
// return ret;
//}
//The data are extracted from Component_Mesh.ExtractedStructure.
//Хотя можно взять из MeshGeometry.Vertices,Indices, но там проиндексировано вместе с другими элементами(normals,...).
static List <(Vector3F[] positions, int[] indices)> GetData(Component_MeshInSpace ms)
{
Component_Mesh.ExtractedStructure structure = ms.Mesh.Value.ExtractStructure();
var ret = new List <(Vector3F[] positions, int[] indices)>();
//extract old positions
var oldPositions = new Vector3F[structure.MeshGeometries.Length][];
for (int geomIndex = 0; geomIndex < structure.MeshGeometries.Length; geomIndex++)
{
var vs = new MeshData.MeshGeometryFormat(structure.MeshGeometries[geomIndex].VertexStructure);
oldPositions[geomIndex] = new Vector3F[structure.MeshGeometries[geomIndex].Vertices.Length / vs.vertexSize];
unsafe
{
fixed(byte *ptr = structure.MeshGeometries[geomIndex].Vertices)
{
for (int i = 0; i < oldPositions[geomIndex].Length; i++)
{
oldPositions[geomIndex][i] = *(Vector3F *)(ptr + i * vs.vertexSize + vs.positionOffset);
}
}
}
}
//------------
var geomTriangles = new List <Component_Mesh.StructureClass.FaceVertex> [structure.MeshGeometries.Length];
for (int i = 0; i < structure.MeshGeometries.Length; i++)
{
geomTriangles[i] = new List <Component_Mesh.StructureClass.FaceVertex>();
}
for (int faceIndex = 0; faceIndex < structure.Structure.Faces.Length; faceIndex++)
{
var face = structure.Structure.Faces[faceIndex];
for (int i = 0; i < face.Triangles.Length; i++)
{
geomTriangles[face.Triangles[i].RawGeometry].Add(face.Triangles[i]);
}
}
for (int i = 0; i < geomTriangles.Length; i++)
{
var g = geomTriangles[i];
int[] oldVertexToNewMapping = new int[structure.Structure.Vertices.Length];
for (int j = 0; j < oldVertexToNewMapping.Length; j++)
{
oldVertexToNewMapping[j] = -1;
}
int nextIndex = 0;
var newPositions = new List <Vector3F>();
var newIndices = new int[g.Count];
for (int j = 0; j < g.Count; j++)
{
var tv = g[j];
int newIndex = oldVertexToNewMapping[tv.Vertex];
if (newIndex == -1)
{
newIndex = nextIndex++;
oldVertexToNewMapping[tv.Vertex] = newIndex;
newPositions.Add(oldPositions[tv.RawGeometry][tv.RawVertex]);
}
newIndices[j] = newIndex;
}
ret.Add((newPositions.ToArray(), newIndices));
}
return(ret);
}
//Component_MeshInSpace contains only one Component_Mesh.
static void MergeGeometries(Component_Mesh mesh, DocumentInstance document, UndoMultiAction undo)
{
Component_MeshGeometry[] geometries = mesh.GetComponents <Component_MeshGeometry>();
if (geometries == null || geometries.Length < 2)
{
return;
}
Reference <Component_Material> material = geometries[0].Material;
//for( int i = 1; i < geometries.Length; i++ )
//{
// if( !( material.Value == null && geometries[ i ].Material.Value == null || material.Equals( geometries[ i ].Material ) ) )
// {
// //??? Если разные Material какой вариант лучше: 1) Брать из первого geometry с вопросом в MessageBox; 2) Disable в меню для Action. 3) Соединять те, которые с одинаковым материалом.
// if( EditorMessageBox.ShowQuestion( "Mesh geometries have different materials. Merge them using a material from the first geometry?", MessageBoxButtons.OKCancel ) == DialogResult.Cancel )
// {
// return;
// }
// }
//}
var extracted = mesh.ExtractStructure();
var newIndices = new List <int>();
var newVertices = new List <byte>();
var newVertexStructure = extracted.MeshGeometries[0].VertexStructure;
var newVertexFormat = new MeshData.MeshGeometryFormat(newVertexStructure);
for (int geomIndex = 0; geomIndex < extracted.MeshGeometries.Length; geomIndex++)
{
var g = extracted.MeshGeometries[geomIndex];
if (g.Vertices == null || g.Indices == null)
{
continue;
}
int indexOffset = newVertices.Count / newVertexFormat.vertexSize;
for (int i = 0; i < g.Indices.Length; i++)
{
newIndices.Add(g.Indices[i] + indexOffset);
}
if (!CommonFunctions.IsSameVertexStructure(newVertexStructure, g.VertexStructure))
{
g.Vertices = MeshData.ConvertToFormat(new MeshData.MeshGeometryFormat(g.VertexStructure), g.Vertices, newVertexFormat);
}
newVertices.AddRange(g.Vertices);
foreach (var face in extracted.Structure.Faces)
{
for (int i = 0; i < face.Triangles.Length; i++)
{
if (face.Triangles[i].RawGeometry == geomIndex)
{
face.Triangles[i].RawGeometry = 0;
face.Triangles[i].RawVertex += indexOffset;
}
}
}
}
// changes in the mesh
if (undo != null)
{
//add structure update to undo
var property = (Metadata.Property)mesh.MetadataGetMemberBySignature("property:" + nameof(Component_Mesh.Structure));
undo.AddAction(new UndoActionPropertiesChange(new UndoActionPropertiesChange.Item(mesh, property, mesh.Structure?.Clone())));
}
bool meshWasEnabled = mesh.Enabled;
mesh.Enabled = false;
try
{
var newGeometry = mesh.CreateComponent <Component_MeshGeometry>();
newGeometry.Material = material;
newGeometry.Vertices = newVertices.ToArray();
newGeometry.Indices = newIndices.ToArray();
newGeometry.VertexStructure = newVertexStructure;
//add created geometry to undo
undo?.AddAction(new UndoActionComponentCreateDelete(document, new Component[] { newGeometry }, create: true));
mesh.Structure = extracted.Structure;
//delete old mesh geometry
undo?.AddAction(new UndoActionComponentCreateDelete(document, geometries, create: false));
newGeometry.Name = CommonFunctions.GetUniqueFriendlyName(newGeometry);
}
finally
{
mesh.Enabled = meshWasEnabled;
}
}