public void Execute(TerrainGeometrySurface surface, TerrainNodeBounds bounds)
{
surface.Begin();
surface.Clear();
//device.VertexDeclaration = vertexPositionTexture;
// disable depth buffer and alpha blending
device.DepthStencilState = DepthStencilState.None;
device.BlendState = BlendState.Opaque;
generateTerrainEffect.Parameters["PermutationMap"].SetValue(permutationTexture);
generateTerrainEffect.Parameters["GradientMap"].SetValue(gradientTexture);
generateTerrainEffect.Parameters["PatchLeft"].SetValue((float)bounds.Left);
generateTerrainEffect.Parameters["PatchTop"].SetValue((float)bounds.Top);
generateTerrainEffect.Parameters["PatchWidth"].SetValue((float)bounds.Width);
generateTerrainEffect.Parameters["PatchHeight"].SetValue((float)bounds.Height);
generateTerrainEffect.Parameters["FaceMatrix"].SetValue(CubeFaces.GetFace(bounds.Face).FaceMatrix);
for (int i = 0; i < generateTerrainEffect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = generateTerrainEffect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.TriangleStrip, surface.Vertices, 0, 2);
}
surface.End();
}
public TerrainNodeSplitItem(TerrainNode parentNode, int childIndex, TerrainNodeBounds bounds, bool isSphere)
{
ParentNode = parentNode;
ChildIndex = childIndex;
Bounds = bounds;
IsSphere = isSphere;
}
/// <summary>
/// Construct a terrain node instance from a pre-generated geometry map
/// </summary>
/// <param name="item"></param>
/// <param name="level"></param>
/// <param name="radius"></param>
/// <param name="createTerrainNodeVertexBuffer"></param>
public TerrainNode(TerrainNodeSplitItem item, int level, double radius, CreateTerrainNodeVertexBufferDelegate createTerrainNodeVertexBuffer, bool isSphere)
{
this.bounds = item.Bounds;
this.level = level;
this.radius = radius;
this.createPosition = null;
this.createTerrainNodeVertexBuffer = createTerrainNodeVertexBuffer;
this.isSphere = isSphere;
this.diffuseSurface = item.DiffuseSurface;
this.normalSurface = item.NormalSurface;
Initialize(item);
}
/// <summary>
/// Construct a terrain node instance
/// </summary>
/// <param name="bounds">Bounds for this node</param>
/// <param name="level">Tree depth of this node</param>
/// <param name="radius">Radius of the sphere this node belongs to</param>
/// <param name="createPosition">Delegate for vertex position creation</param>
public TerrainNode(TerrainNodeBounds bounds, int level, double radius,
CreatePositionDelegate createPosition,
CreateTerrainNodeVertexBufferDelegate createTerrainNodeVertexBuffer,
bool isSphere)
{
this.bounds = bounds;
this.level = level;
this.radius = radius;
this.createPosition = createPosition;
this.createTerrainNodeVertexBuffer = createTerrainNodeVertexBuffer;
this.isSphere = isSphere;
Initialize(null);
}
public void Execute(TerrainGeometrySurface surface, TerrainNodeBounds bounds)
{
surface.Begin();
surface.Clear();
// disable depth buffer and alpha blending
device.DepthStencilState = DepthStencilState.None;
device.BlendState = BlendState.Opaque;
for (int i = 0; i < generateTerrainEffect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = generateTerrainEffect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.TriangleStrip, surface.Vertices, 0, 2);
}
surface.End();
}
public static void QueueNodeSplit(TerrainNode parentNode, int childIndex, TerrainNodeBounds bounds, bool isSphere)
{
QueueNodeSplit(new TerrainNodeSplitItem(parentNode, childIndex, bounds, isSphere));
}
