static MESH CreateMesh(int boneCount)
{
var mesh = new MESH("skinned mesh");
mesh.VertexPreprocessor.SetValidationPreprocessors();
var prim = mesh.UsePrimitive(new SharpGLTF.Materials.MaterialBuilder("Default"));
var a0 = default(VERTEX);
var a1 = default(VERTEX);
var a2 = default(VERTEX);
var a3 = default(VERTEX);
for (int i = 0; i < boneCount; ++i)
{
var b0 = new VERTEX(new Vector3(-5, i * 10, -5), Vector4.One, (i, 1));
var b1 = new VERTEX(new Vector3(+5, i * 10, -5), Vector4.One, (i, 1));
var b2 = new VERTEX(new Vector3(+5, i * 10, +5), Vector4.One, (i, 1));
var b3 = new VERTEX(new Vector3(-5, i * 10, +5), Vector4.One, (i, 1));
if (i == 0)
{
prim.AddQuadrangle(b0, b1, b2, b3);
}
else
{
prim.AddQuadrangle(b0, b1, a1, a0);
prim.AddQuadrangle(b1, b2, a2, a1);
prim.AddQuadrangle(b2, b3, a3, a2);
prim.AddQuadrangle(b3, b0, a0, a3);
}
a0 = b0;
a1 = b1;
a2 = b2;
a3 = b3;
}
prim.AddQuadrangle(a3, a2, a1, a0);
return(mesh);
}
private static void ContainedMeshToGLTF(List <RawMeshContainer> meshes, FileInfo outfile)
{
var scene = new SharpGLTF.Scenes.SceneBuilder();
int mIndex = -1;
foreach (var mesh in meshes)
{
++mIndex;
long indCount = mesh.indices.Length;
var expmesh = new MESH(string.Format(Path.GetFileNameWithoutExtension(outfile.FullName) + "_mesh_{0}", mIndex));
var prim = expmesh.UsePrimitive(new MaterialBuilder("Default"));
for (long i = 0; i < indCount; i += 3)
{
uint idx0 = mesh.indices[i + 1];
uint idx1 = mesh.indices[i];
uint idx2 = mesh.indices[i + 2];
//VPNT
Vec3 p_0 = new Vec3(mesh.vertices[idx0].X, mesh.vertices[idx0].Y, mesh.vertices[idx0].Z);
Vec3 n_0 = new Vec3(mesh.normals[idx0].X, mesh.normals[idx0].Y, mesh.normals[idx0].Z);
Vec4 t_0 = new Vec4(new Vec3(mesh.tangents[idx0].X, mesh.tangents[idx0].Y, mesh.tangents[idx0].Z), 1);
Vec3 p_1 = new Vec3(mesh.vertices[idx1].X, mesh.vertices[idx1].Y, mesh.vertices[idx1].Z);
Vec3 n_1 = new Vec3(mesh.normals[idx1].X, mesh.normals[idx1].Y, mesh.normals[idx1].Z);
Vec4 t_1 = new Vec4(new Vec3(mesh.tangents[idx1].X, mesh.tangents[idx1].Y, mesh.tangents[idx1].Z), 1);
Vec3 p_2 = new Vec3(mesh.vertices[idx2].X, mesh.vertices[idx2].Y, mesh.vertices[idx2].Z);
Vec3 n_2 = new Vec3(mesh.normals[idx2].X, mesh.normals[idx2].Y, mesh.normals[idx2].Z);
Vec4 t_2 = new Vec4(new Vec3(mesh.tangents[idx2].X, mesh.tangents[idx2].Y, mesh.tangents[idx2].Z), 1);
//VCT
Vec2 tx0_0 = new Vec2(mesh.tx0coords[idx0].X, mesh.tx0coords[idx0].Y);
Vec2 tx1_0 = new Vec2(mesh.tx1coords[idx0].X, mesh.tx1coords[idx0].Y);
Vec2 tx0_1 = new Vec2(mesh.tx0coords[idx1].X, mesh.tx0coords[idx1].Y);
Vec2 tx1_1 = new Vec2(mesh.tx1coords[idx1].X, mesh.tx1coords[idx1].Y);
Vec2 tx0_2 = new Vec2(mesh.tx0coords[idx2].X, mesh.tx0coords[idx2].Y);
Vec2 tx1_2 = new Vec2(mesh.tx1coords[idx2].X, mesh.tx1coords[idx2].Y);
Vec4 col_0 = new Vec4(mesh.colors[idx0].X, mesh.colors[idx0].Y, mesh.colors[idx0].Z, mesh.colors[idx0].W);
Vec4 col_1 = new Vec4(mesh.colors[idx1].X, mesh.colors[idx1].Y, mesh.colors[idx1].Z, mesh.colors[idx1].W);
Vec4 col_2 = new Vec4(mesh.colors[idx2].X, mesh.colors[idx2].Y, mesh.colors[idx2].Z, mesh.colors[idx2].W);
// vertex build
var v0 = new VERTEX(new VPNT(p_0, n_0, t_0), new VCT(col_0, tx0_0, tx1_0));
var v1 = new VERTEX(new VPNT(p_1, n_1, t_1), new VCT(col_1, tx0_1, tx1_1));
var v2 = new VERTEX(new VPNT(p_2, n_2, t_2), new VCT(col_2, tx0_2, tx1_2));
// triangle build
prim.AddTriangle(v0, v1, v2);
}
scene.AddRigidMesh(expmesh, System.Numerics.Matrix4x4.Identity);
}
var model = scene.ToGltf2();
model.SaveGLB(Path.GetFullPath(outfile.FullName).Replace(".mesh", ".glb"));
}