public ModelRoot AddMesh(ModelRoot model, string nodeName, IndexedTriangulation indexedTriangulation, IEnumerable <Vector3> normals, PBRTexture textures, bool doubleSided = true)
{
// create a basic scene
model = model ?? CreateNewModel();
var rnode = model.LogicalScenes.First()?.FindNode(n => n.Name == nodeName);
if (rnode == null)
{
rnode = model.LogicalScenes.First().CreateNode(nodeName);
}
var rmesh = rnode.Mesh = FindOrCreateMesh(model, string.Concat(rnode.Name, "Mesh"));
var material = model.CreateMaterial(string.Concat(nodeName, "Material"))
.WithPBRMetallicRoughness(Vector4.One, textures?.BaseColorTexture?.FilePath, null, 0, 1)
.WithDoubleSide(doubleSided);
if (textures != null && textures.NormalTexture != null)
{
material.WithChannelTexture("NORMAL", 0, textures.NormalTexture.FilePath);
}
// create mesh primitive
MeshPrimitive primitive = rmesh.CreatePrimitive();
if (indexedTriangulation.Colors != null && indexedTriangulation.Colors.Any())
{
primitive = primitive.WithVertexAccessor("POSITION", indexedTriangulation.Positions);
primitive = primitive.WithVertexAccessor("COLOR_0", indexedTriangulation.Colors);
}
else
{
primitive = primitive.WithVertexAccessor("POSITION", indexedTriangulation.Positions);
}
if (normals != null)
{
primitive = primitive.WithVertexAccessor("NORMAL", normals.ToList());
}
primitive = primitive.WithIndicesAccessor(PrimitiveType.TRIANGLES, indexedTriangulation.Indices);
if (textures != null && textures.TextureCoordSets == null)
{
(Vector3 Min, Vector3 Max)coordBounds = CalculateBounds(indexedTriangulation.Positions);
textures.TextureCoordSets = indexedTriangulation.Positions.Select(pos => new Vector2(
MathHelper.Map(coordBounds.Min.X, coordBounds.Max.X, 0, 1, pos.X, true)
, MathHelper.Map(coordBounds.Min.Z, coordBounds.Max.Z, 0, 1, pos.Z, true)
));
primitive = primitive
.WithVertexAccessor("TEXCOORD_0", textures.TextureCoordSets.ToList());
}
primitive = primitive.WithMaterial(material);
return(model);
}
public ModelRoot CloneWithMesh(ModelRoot inputModel, IndexedTriangulation indexedTriangulation)
{
var model = CreateNewModel();
var rnode = model.LogicalScenes.First().CreateNode(TERRAIN_NODE_NAME);
var rmesh = rnode.Mesh = FindOrCreateMesh(model, string.Concat(rnode.Name, "Mesh"));
MaterialBuilder b = new MaterialBuilder();
inputModel.LogicalMaterials.First().CopyTo(b);
var material = Toolkit.CreateMaterial(model, b);
// create mesh primitive
MeshPrimitive primitive = rmesh.CreatePrimitive();
if (indexedTriangulation.Colors != null && indexedTriangulation.Colors.Any())
{
primitive = primitive.WithVertexAccessor("POSITION", indexedTriangulation.Positions);
primitive = primitive.WithVertexAccessor("COLOR_0", indexedTriangulation.Colors);
}
else
{
primitive = primitive.WithVertexAccessor("POSITION", indexedTriangulation.Positions);
}
var normals = _meshService.ComputeMeshNormals(indexedTriangulation.Positions, indexedTriangulation.Indices);
primitive = primitive.WithVertexAccessor("NORMAL", normals.ToList());
primitive = primitive.WithIndicesAccessor(PrimitiveType.TRIANGLES, indexedTriangulation.Indices);
(Vector3 Min, Vector3 Max)coordBounds = CalculateBounds(indexedTriangulation.Positions);
var coordSets = indexedTriangulation.Positions.Select(pos => new Vector2(
MathHelper.Map(coordBounds.Min.X, coordBounds.Max.X, 0, 1, pos.X, true)
, MathHelper.Map(coordBounds.Min.Z, coordBounds.Max.Z, 0, 1, pos.Z, true)
));
primitive = primitive
.WithVertexAccessor("TEXCOORD_0", coordSets.ToList());
primitive = primitive.WithMaterial(material);
return(model);
}
