private bool InitializeBuffers(SharpDX.Direct3D11.Device device)
{
// Create the vertex array.
var vertices = new PositionVertex[VertexCount];
// Create the index array.
int[] indices = new int[IndexCount];
// Load the vertex array and index array with data.
for (int i = 0; i < VertexCount; i++)
{
vertices[i].position = new Vector3(Model[i].x, Model[i].y, Model[i].z);
indices[i] = i;
}
// Now finally create the vertex buffer.
// Create the vertex buffer.
VertexBuffer = SharpDX.Direct3D11.Buffer.Create(device, BindFlags.VertexBuffer, vertices);
// Create the index buffer.
IndexBuffer = SharpDX.Direct3D11.Buffer.Create(device, BindFlags.IndexBuffer, indices);
// Release the arrays now that the buffers have been created and loaded.
vertices = null;
indices = null;
ReleaseSkyDomeModel();
return(true);
}
public static GeometryData FromVertexArray(float[] vertices, int[] indices, int indicesPerFace = 3, float[] bindShapeMatrix = null)
{
var data = new PositionVertex[indices.Length];
var meshIndices = new int[indices.Length];
for (var i = 0; i < indices.Length; i++)
{
var vertex = (bindShapeMatrix != null) ?
new float[] {
vertices[indices[i] * 3],
vertices[indices[i] * 3 + 1],
vertices[indices[i] * 3 + 2]
}.VectorTransform(bindShapeMatrix)
: new float[] {
vertices[indices[i] * 3],
vertices[indices[i] * 3 + 1],
vertices[indices[i] * 3 + 2]
};
data[i].PosX = vertex[0];
data[i].PosY = vertex[1];
data[i].PosZ = vertex[2];
meshIndices[i] = i;
}
// check if we need to triangulate the mesh
if (indicesPerFace == 4)
{
meshIndices = QuadIndicesToTriangles(meshIndices);
}
var result = new GeometryData()
{
VertexCount = data.Length,
Indices = meshIndices
};
using (var stream = new System.IO.MemoryStream())
using (var writer = new System.IO.BinaryWriter(stream))
{
for (int i = 0; i < data.Length; i++)
{
writer.Write(data[i].PosX);
writer.Write(data[i].PosY);
writer.Write(data[i].PosZ);
}
result.Data = stream.ToArray();
}
// add vertex attribs
result.Attribs = new VertexAttrib[]
{
new VertexAttrib()
{
Size = 3,
Type = (int)OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float,
Stride = 3 * sizeof(float),
Offset = 0
}
};
return(result);
}
