private void ExportMesh(IINode meshNode, BabylonScene babylonScene)
{
if (meshNode.IsInstance())
{
return;
}
if (meshNode.GetBoolProperty("babylonjs_noexport"))
{
return;
}
if (!ExportHiddenObjects && meshNode.IsHidden(NodeHideFlags.None, false))
{
return;
}
var babylonMesh = new BabylonMesh();
int vx1, vx2, vx3;
babylonMesh.name = meshNode.Name;
babylonMesh.id = meshNode.GetGuid().ToString();
if (meshNode.HasParent())
{
babylonMesh.parentId = meshNode.ParentNode.GetGuid().ToString();
}
// Misc.
babylonMesh.isVisible = meshNode.Renderable == 1;
babylonMesh.pickable = meshNode.GetBoolProperty("babylonjs_checkpickable");
babylonMesh.receiveShadows = meshNode.RcvShadows == 1;
babylonMesh.showBoundingBox = meshNode.GetBoolProperty("babylonjs_showboundingbox");
babylonMesh.showSubMeshesBoundingBox = meshNode.GetBoolProperty("babylonjs_showsubmeshesboundingbox");
// Collisions
babylonMesh.checkCollisions = meshNode.GetBoolProperty("babylonjs_checkcollisions");
// Skin
var skin = GetSkinModifier(meshNode);
if (skin != null)
{
babylonMesh.skeletonId = skins.IndexOf(skin);
bonesCount = skin.NumBones;
}
// Position / rotation / scaling
var wm = Tools.ExtractCoordinates(meshNode, babylonMesh, exportQuaternionsInsteadOfEulers);
if (wm.Parity)
{
vx1 = 2;
vx2 = 1;
vx3 = 0;
}
else
{
vx1 = 0;
vx2 = 1;
vx3 = 2;
}
// Pivot
var pivotMatrix = Tools.Identity;
pivotMatrix.PreTranslate(meshNode.ObjOffsetPos);
Loader.Global.PreRotateMatrix(pivotMatrix, meshNode.ObjOffsetRot);
Loader.Global.ApplyScaling(pivotMatrix, meshNode.ObjOffsetScale);
babylonMesh.pivotMatrix = pivotMatrix.ToArray();
// Mesh
var objectState = meshNode.EvalWorldState(0, false);
var triObject = objectState.Obj.GetMesh();
var mesh = triObject != null ? triObject.Mesh : null;
RaiseMessage(meshNode.Name, 1);
if (mesh != null)
{
mesh.BuildNormals();
if (mesh.NumFaces < 1)
{
RaiseError(string.Format("Mesh {0} has no face", babylonMesh.name), 2);
}
if (mesh.NumVerts < 3)
{
RaiseError(string.Format("Mesh {0} has not enough vertices", babylonMesh.name), 2);
}
if (mesh.NumVerts >= 65536)
{
RaiseError(string.Format("Mesh {0} has too many vertices (more than 65535)", babylonMesh.name), 2);
}
// Material
var mtl = meshNode.Mtl;
var multiMatsCount = 1;
if (mtl != null)
{
babylonMesh.materialId = mtl.GetGuid().ToString();
if (!referencedMaterials.Contains(mtl))
{
referencedMaterials.Add(mtl);
}
multiMatsCount = Math.Max(mtl.NumSubMtls, 1);
}
babylonMesh.visibility = meshNode.GetVisibility(0, Tools.Forever);
var vertices = new List <GlobalVertex>();
var indices = new List <int>();
var matIDs = new List <int>();
var hasUV = mesh.NumTVerts > 0;
var hasUV2 = mesh.GetNumMapVerts(2) > 0;
var optimizeVertices = meshNode.GetBoolProperty("babylonjs_optimizevertices");
// Skin
IISkinContextData skinContext = null;
if (skin != null)
{
skinContext = skin.GetContextInterface(meshNode);
}
// Compute normals
VNormal[] vnorms = Tools.ComputeNormals(mesh, optimizeVertices);
List <GlobalVertex>[] verticesAlreadyExported = null;
if (optimizeVertices)
{
verticesAlreadyExported = new List <GlobalVertex> [mesh.NumVerts];
}
for (var face = 0; face < mesh.NumFaces; face++)
{
indices.Add(CreateGlobalVertex(mesh, face, vx1, vertices, hasUV, hasUV2, vnorms, verticesAlreadyExported, skinContext));
indices.Add(CreateGlobalVertex(mesh, face, vx2, vertices, hasUV, hasUV2, vnorms, verticesAlreadyExported, skinContext));
indices.Add(CreateGlobalVertex(mesh, face, vx3, vertices, hasUV, hasUV2, vnorms, verticesAlreadyExported, skinContext));
matIDs.Add(mesh.Faces[face].MatID % multiMatsCount);
CheckCancelled();
}
if (vertices.Count >= 65536)
{
RaiseError(string.Format("Mesh {0} has too many vertices: {1} (limit is 65535)", babylonMesh.name, vertices.Count), 2);
if (!optimizeVertices)
{
RaiseError("You can try to optimize your object using [Try to optimize vertices] option", 2);
}
}
RaiseMessage(string.Format("{0} vertices, {1} faces", vertices.Count, indices.Count / 3), 2);
// Buffers
babylonMesh.positions = vertices.SelectMany(v => v.Position.ToArraySwitched()).ToArray();
babylonMesh.normals = vertices.SelectMany(v => v.Normal.ToArraySwitched()).ToArray();
if (hasUV)
{
babylonMesh.uvs = vertices.SelectMany(v => v.UV.ToArray()).ToArray();
}
if (hasUV2)
{
babylonMesh.uvs2 = vertices.SelectMany(v => v.UV2.ToArray()).ToArray();
}
if (skin != null)
{
babylonMesh.matricesWeights = vertices.SelectMany(v => v.Weights.ToArray()).ToArray();
babylonMesh.matricesIndices = vertices.Select(v => v.BonesIndices).ToArray();
}
// Submeshes
var sortedIndices = new List <int>();
var subMeshes = new List <BabylonSubMesh>();
var indexStart = 0;
for (var index = 0; index < multiMatsCount; index++)
{
var subMesh = new BabylonSubMesh();
var indexCount = 0;
var minVertexIndex = int.MaxValue;
var maxVertexIndex = int.MinValue;
subMesh.indexStart = indexStart;
subMesh.materialIndex = index;
for (var face = 0; face < matIDs.Count; face++)
{
if (matIDs[face] == index)
{
var a = indices[3 * face];
var b = indices[3 * face + 1];
var c = indices[3 * face + 2];
sortedIndices.Add(a);
sortedIndices.Add(b);
sortedIndices.Add(c);
indexCount += 3;
if (a < minVertexIndex)
{
minVertexIndex = a;
}
if (b < minVertexIndex)
{
minVertexIndex = b;
}
if (c < minVertexIndex)
{
minVertexIndex = c;
}
if (a > maxVertexIndex)
{
maxVertexIndex = a;
}
if (b > maxVertexIndex)
{
maxVertexIndex = b;
}
if (c > maxVertexIndex)
{
maxVertexIndex = c;
}
}
}
if (indexCount != 0)
{
subMesh.indexCount = indexCount;
subMesh.verticesStart = minVertexIndex;
subMesh.verticesCount = maxVertexIndex - minVertexIndex + 1;
indexStart += indexCount;
subMeshes.Add(subMesh);
}
CheckCancelled();
}
babylonMesh.subMeshes = subMeshes.ToArray();
// Buffers - Indices
babylonMesh.indices = sortedIndices.ToArray();
triObject.Dispose();
}
// Instances
var tabs = Loader.Global.NodeTab.Create();
Loader.Global.IInstanceMgr.InstanceMgr.GetInstances(meshNode, tabs);
var instances = new List <BabylonAbstractMesh>();
for (var index = 0; index < tabs.Count; index++)
{
var indexer = new IntPtr(index);
var tab = tabs[indexer];
Marshal.FreeHGlobal(indexer);
if (meshNode.GetGuid() == tab.GetGuid())
{
continue;
}
tab.MarkAsInstance();
var instance = new BabylonAbstractMesh {
name = tab.Name
};
Tools.ExtractCoordinates(tab, instance, exportQuaternionsInsteadOfEulers);
var instanceAnimations = new List <BabylonAnimation>();
GenerateCoordinatesAnimations(tab, instanceAnimations);
instance.animations = instanceAnimations.ToArray();
instances.Add(instance);
}
babylonMesh.instances = instances.ToArray();
// Animations
var animations = new List <BabylonAnimation>();
GenerateCoordinatesAnimations(meshNode, animations);
if (!ExportFloatController(meshNode.VisController, "visibility", animations))
{
ExportFloatAnimation("visibility", animations, key => new[] { meshNode.GetVisibility(key, Tools.Forever) });
}
babylonMesh.animations = animations.ToArray();
if (meshNode.GetBoolProperty("babylonjs_autoanimate", 1))
{
babylonMesh.autoAnimate = true;
babylonMesh.autoAnimateFrom = (int)meshNode.GetFloatProperty("babylonjs_autoanimate_from");
babylonMesh.autoAnimateTo = (int)meshNode.GetFloatProperty("babylonjs_autoanimate_to", 100);
babylonMesh.autoAnimateLoop = meshNode.GetBoolProperty("babylonjs_autoanimateloop", 1);
}
babylonScene.MeshesList.Add(babylonMesh);
}
