/// <summary>
/// Commits all current instances to the scene.
/// </summary>
public void Commit()
{
foreach (var entry in instances)
{
var instance = entry.Value;
instance.Geometry.Commit();
var xtf = new float[12] // Column-major order
{
instance.Transform.U.X, instance.Transform.U.Y, instance.Transform.U.Z,
instance.Transform.V.X, instance.Transform.V.Y, instance.Transform.V.Z,
instance.Transform.W.X, instance.Transform.W.Y, instance.Transform.W.Z,
instance.Transform.T.X, instance.Transform.T.Y, instance.Transform.T.Z
};
var pinned = GCHandle.Alloc(xtf, GCHandleType.Pinned); // Pin transform matrix to raw float* array
RTC.SetTransform(scenePtr, entry.Key, RTC.MatrixLayout.ColumnMajor, pinned.AddrOfPinnedObject());
pinned.Free(); // Release before checking for error
RTC.CheckLastError();
if (instance.Enabled)
{
RTC.EnableGeometry(scenePtr, entry.Key);
}
else
{
RTC.DisableGeometry(scenePtr, entry.Key);
}
RTC.CheckLastError();
if (sceneFlags.HasFlag(SceneFlags.Dynamic))
{
RTC.UpdateGeometry(scenePtr, entry.Key);
RTC.CheckLastError(); // static mesh?
}
}
RTC.Commit(scenePtr);
RTC.CheckLastError();
}
/// <summary>
/// Sets the transformation matrix for this instance.
/// </summary>
/// <param name="transform">The transformation matrix entries.</param>
/// <param name="layout">The layout of the matrix entries.</param>
/// <remarks>
/// Only the first 12 or 16 entries of the transform array are used.
/// </remarks>
/// <remarks>
/// The transform should be uniform, i.e. no non-uniform scaling.
/// </remarks>
public unsafe void SetTransform(float[] transform, MatrixLayout layout)
{
if (transform == null)
{
throw new ArgumentNullException("transform");
}
switch (layout)
{
case MatrixLayout.ColumnMajorAligned16:
if (transform.Length < 16)
{
throw new ArgumentException("transform");
}
else
{
break;
}
case MatrixLayout.ColumnMajor:
case MatrixLayout.RowMajor:
if (transform.Length < 12)
{
throw new ArgumentException("transform");
}
else
{
break;
}
default:
throw new ArgumentException("layout");
}
fixed(float *xfm = transform)
{
RTC.SetTransform(Parent.NativePtr, ID, layout, xfm);
}
}
