protected virtual void SetupBoundingBoxVertices( AxisAlignedBox aab )
{
Vector3 vmax = aab.Maximum;
Vector3 vmin = aab.Minimum;
float sqLen = System.Math.Max( vmax.LengthSquared, vmin.LengthSquared );
//mRadius = System.Math.Sqrt(sqLen);
float maxx = vmax.x;
float maxy = vmax.y;
float maxz = vmax.z;
float minx = vmin.x;
float miny = vmin.y;
float minz = vmin.z;
HardwareVertexBuffer buffer = vertexData.vertexBufferBinding.GetBuffer( PositionBinding );
IntPtr posPtr = buffer.Lock( BufferLocking.Discard );
unsafe
{
float* pPos = (float*)posPtr.ToPointer();
// line 0
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = minz;
*pPos++ = maxx;
*pPos++ = miny;
*pPos++ = minz;
// line 1
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = minz;
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = maxz;
// line 2
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = minz;
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = minz;
// line 3
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = minz;
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = maxz;
// line 4
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = minz;
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = minz;
// line 5
*pPos++ = maxx;
*pPos++ = miny;
*pPos++ = minz;
*pPos++ = maxx;
*pPos++ = miny;
*pPos++ = maxz;
// line 6
*pPos++ = maxx;
*pPos++ = miny;
*pPos++ = minz;
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = minz;
// line 7
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = maxz;
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = maxz;
// line 8
*pPos++ = minx;
*pPos++ = maxy;
*pPos++ = maxz;
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = maxz;
// line 9
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = minz;
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = maxz;
// line 10
*pPos++ = maxx;
*pPos++ = miny;
*pPos++ = maxz;
*pPos++ = maxx;
*pPos++ = maxy;
*pPos++ = maxz;
// line 11
*pPos++ = minx;
*pPos++ = miny;
*pPos++ = maxz;
*pPos++ = maxx;
*pPos++ = miny;
*pPos = maxz;
}
buffer.Unlock();
}
