private GltfNodeInfo[] ExtractNodes(Gltf model, GltfBucketContainer cameras)
{
var noOfNodes = model.Nodes != null ? model.Nodes.Length : 0;
var allNodes = new GltfNodeInfo[noOfNodes];
for (var i = 0; i < noOfNodes; i += 1)
{
var srcNode = model.Nodes[i];
var destNode = new GltfNodeInfo
{
Name = srcNode.Name,
NodeIndex = i,
CameraAllocation = cameras.GetAllocation(srcNode.Camera),
Children = srcNode.Children ?? (new int[] { }),
Transform = GenerateTransform(srcNode),
Mesh = srcNode.Mesh,
};
destNode.IsMirrored = destNode.Transform.Determinant < 0;
// TODO: meshes
allNodes[i] = destNode;
}
LinkToParents(allNodes);
return(allNodes);
}
private static void AppendToGroup(Dictionary <GltfInstancedGroupKey, GltfInstanceDrawGroup> instanceDrawGroups, GltfNodeInfo node, int meshIndex, GltfMeshPrimitive primitive, EffectVariantKey key, EffectVariant found)
{
var groupKey = new GltfInstancedGroupKey
{
MeshIndex = meshIndex,
CameraSlotIndex = 0,
TextureSlotIndex = 0,
MaterialSlotIndex = primitive.Material.StorageIndex,
VariantKey = key,
};
if (!instanceDrawGroups.TryGetValue(groupKey, out GltfInstanceDrawGroup drawGroup))
{
drawGroup = new GltfInstanceDrawGroup
{
GroupKey = groupKey,
Variant = found,
Members = new List <GltfInstancedDraw>(),
};
instanceDrawGroups.Add(groupKey, drawGroup);
}
var instancedDraw = new GltfInstancedDraw
{
Key = key,
GroupKey = groupKey,
Instance = new PerInstance
{
Translation = node.Transform.ExtractTranslation(),
Scale = node.Transform.ExtractScale(),
Rotation = node.Transform.ExtractRotation(true), // TODO
MaterialIndex = primitive.Material.Offset,
},
};
drawGroup.Members.Add(instancedDraw);
}
