void DrawBoundingBox()
{
// TODO: set this stuff up once
var vertices = new VertexPositionNormalColor[8];
var indices = new short[]
{
0, 1,
1, 2,
2, 3,
3, 0,
0, 4,
1, 5,
2, 6,
3, 7,
4, 5,
5, 6,
6, 7,
7, 4,
};
Vector3[] corners = _boundingBox.GetCorners();
for (int i = 0; i < 8; i++)
{
vertices[i].Position = corners[i];
vertices[i].Color = Color.DarkGreen;
vertices[i].Normal = Vector3.Up;
}
foreach (EffectPass pass in _effect.CurrentTechnique.Passes)
{
pass.Apply();
_graphicsDevice.DrawUserIndexedPrimitives(PrimitiveType.LineList, vertices, 0, 8, indices, 0, indices.Length / 2);
}
}
VertexPositionNormalColor[] GenerateMeshVertices(HeightmapSample[] heightmapSamples)
{
var vertices = new VertexPositionNormalColor[_gridSize * _gridSize];
for (int row = 0; row < _gridSize; row++)
{
for (int column = 0; column < _gridSize; column++)
{
var vertex = GetVertexInMeshSpace(heightmapSamples[row * _gridSize + column], column, row);
AdjustBoundingBoxToInclude(vertex.Position);
vertices[row * _gridSize + column] = vertex;
}
}
GenerateNormals(vertices);
return(vertices);
}
public void Initialize(VertexPositionNormalColor[] vertices, short[] indices)
{
_effect = new BasicEffect(_graphicsDevice);
CreateVertexBuffer(vertices);
CreateIndexBuffer(indices);
}
private void CreateVertexBuffer(VertexPositionNormalColor[] vertices)
{
_numberOfVertices = vertices.Length;
_vertexBuffer = new VertexBuffer(_graphicsDevice, typeof(VertexPositionNormalColor), _numberOfVertices, BufferUsage.WriteOnly);
_vertexBuffer.SetData(vertices);
}
void DrawBoundingBox()
{
// TODO: set this stuff up once
var vertices = new VertexPositionNormalColor[8];
var indices = new short[]
{
0, 1,
1, 2,
2, 3,
3, 0,
0, 4,
1, 5,
2, 6,
3, 7,
4, 5,
5, 6,
6, 7,
7, 4,
};
Vector3[] corners = _boundingBox.GetCorners();
for (int i = 0; i < 8; i++)
{
vertices[i].Position = corners[i];
vertices[i].Color = Color.DarkGreen;
vertices[i].Normal = Vector3.Up;
}
foreach (EffectPass pass in _effect.CurrentTechnique.Passes)
{
pass.Apply();
_graphicsDevice.DrawUserIndexedPrimitives(PrimitiveType.LineList, vertices, 0, 8, indices, 0, indices.Length / 2);
}
}
public void Initialize(VertexPositionNormalColor[] vertices, short[] indices, BoundingBox boundingBox)
{
CreateVertexBuffer(vertices);
CreateIndexBuffer(indices);
_boundingBox = boundingBox;
}