public void Build(RenderDrawContext context)
{
if (Mesh == null && TryGetHeightMapImageData(context.CommandList, out var data))
{
Data = new GeometryBuilder(data).BuildTerrainData(Size, MaxHeight, UvScale);
MeshBoundingBox = Utils.FromPoints(Data.Vertices);
MeshBoundingSphere = BoundingSphere.FromBox(MeshBoundingBox);
BoundingBox = new BoundingBoxExt(MeshBoundingBox);
var vertexBuffer = Buffer.Vertex.New(context.GraphicsDevice, Data.Vertices, GraphicsResourceUsage.Dynamic);
var indexBuffer = Buffer.Index.New(context.GraphicsDevice, Data.Indices);
var vertexBufferBinding = new VertexBufferBinding(vertexBuffer, VertexPositionNormalTexture.Layout, vertexBuffer.ElementCount);
var indexBufferBinding = new IndexBufferBinding(indexBuffer, true, indexBuffer.ElementCount);
MeshDraw = new MeshDraw
{
StartLocation = 0,
PrimitiveType = PrimitiveType.TriangleList,
VertexBuffers = new[] { vertexBufferBinding },
IndexBuffer = indexBufferBinding,
DrawCount = indexBuffer.ElementCount
};
Mesh = new Mesh(MeshDraw, new ParameterCollection());
}
}
private async void Save(string path, GeometryData data)
{
var vertIdx = 0;
var uvIdx = 0;
var normIdx = 0;
var fileContent = new StringBuilder();
fileContent.AppendLine("# Generated by XenkoTerrain " + DateTime.Now.ToLongDateString());
fileContent.AppendLine("# Vertices: " + data.Vertices.Length);
fileContent.AppendLine("# Size: " + data.Size);
fileContent.AppendLine("usemtl Terrain");
for (var row = 0; row < data.TessellationY - 1; row++)
{
for (var col = 0; col < data.TessellationX - 1; col++)
{
var topLeft = col + row * (int)data.TessellationX;
var topRight = topLeft + 1;
var bottomLeft = topLeft + (int)data.TessellationX;
var bottomRight = bottomLeft + 1;
var topLeftVertex = data.Vertices[topLeft];
var topRightVertex = data.Vertices[topRight];
var bottomLeftVertex = data.Vertices[bottomLeft];
var botomRightVertex = data.Vertices[bottomRight];
fileContent.AppendLine("v " + Print(topRightVertex.Position));
fileContent.AppendLine("v " + Print(topLeftVertex.Position));
fileContent.AppendLine("v " + Print(bottomLeftVertex.Position));
fileContent.AppendLine("v " + Print(botomRightVertex.Position));
fileContent.AppendLine("vn " + Print(topRightVertex.Normal));
fileContent.AppendLine("vn " + Print(topLeftVertex.Normal));
fileContent.AppendLine("vn " + Print(bottomLeftVertex.Normal));
fileContent.AppendLine("vn " + Print(botomRightVertex.Normal));
fileContent.AppendLine("vt " + Print(data.Size * topRightVertex.TextureCoordinate));
fileContent.AppendLine("vt " + Print(data.Size * topLeftVertex.TextureCoordinate));
fileContent.AppendLine("vt " + Print(data.Size * bottomLeftVertex.TextureCoordinate));
fileContent.AppendLine("vt " + Print(data.Size * botomRightVertex.TextureCoordinate));
fileContent.AppendLine($"f {++vertIdx}/{++uvIdx}/{++normIdx} {++vertIdx}/{++uvIdx}/{++normIdx} {++vertIdx}/{++uvIdx}/{++normIdx} {++vertIdx}/{++uvIdx}/{++normIdx}");
}
}
using (var streamWriter = new StreamWriter(path))
{
await streamWriter.WriteAsync(fileContent.ToString());
}
}
public void Update(TerrainTileComponent component)
{
var shouldClear = Size != component.Size ||
MaxHeight != component.MaxHeight ||
HeightMap != component.HeightMap ||
UvScale != component.UvScale;
Enabled = component.Enabled;
Size = component.Size;
HeightMap = component.HeightMap;
MaxHeight = component.MaxHeight;
UvScale = component.UvScale;
Material = component.Material;
if (shouldClear)
{
Mesh = null;
Data = null;
component.Clear();
}
}
public void RegenCollider(GeometryData data = null)
{
//If no new data is provided, use the existing data
if (data == null)
{
data = CurrentGeometryData; //Use the existing data
}
else
{
CurrentGeometryData = data; //Save the new data, there's been an update
}
//Whether or not to add the collider to the entity
var add = false;
//Get or create a collider
StaticColliderComponent colliderComponent = Entity.Get <StaticColliderComponent>();
if (colliderComponent == null)
{
colliderComponent = new StaticColliderComponent();
add = true;
}
//Create collider
var heightfield = CreateHeightfield((int)data.TessellationX, (int)data.TessellationY, -MaxHeight, MaxHeight, data.Vertices.Select(v => v.Position.Y).ToArray(), out var points);
//Clear any existing colliders
colliderComponent.ColliderShapes.Clear();
//Add the collider
colliderComponent.ColliderShapes.Add(new BoxColliderShapeDesc());
colliderComponent.ColliderShape = heightfield;
//Add to entity if it does not already exist
if (add)
{
Entity.Add(colliderComponent);
}
}
public void Build(TerrainTileRenderObject renderObject)
{
IsSet = true;
hiddenGeometry = null;
CurrentMeshDraw = renderObject.MeshDraw;
CurrentGeometryData = renderObject.Data;
var model = new Model
{
Meshes = new List <Mesh> {
renderObject.Mesh
},
BoundingBox = renderObject.MeshBoundingBox,
BoundingSphere = renderObject.MeshBoundingSphere
};
var modelComponent = new ModelComponent(model);
modelComponent.Materials.Add(0, renderObject.Material);
Entity.Add(modelComponent);
}
public Task SaveAsync(string path, GeometryData data)
{
return(Task.Run(() => Save(path, data)));
}
