/* Convert world space coordinates (doubles) to view space (floats) */
private Vector3[] ConvertPointsToViewSpace(List<Position> points, Camera camera)
{
Vector3[] verts = new Vector3[points.Count];
for (int i = 0; i < points.Count; ++i)
verts[i] = points[i].Diff(camera.Position);
return verts;
}
/* Called by GraphicsSystem when it is time to draw the queued list */
public void Flush(Camera camera)
{
/* Turn off lighting and texturing which will change the color
* of the visualization lines */
GraphicsSystem.Lighting = false;
GraphicsSystem.Texture = null;
if (_points.Count > 0)
{
Vector3[] verts = ConvertPointsToViewSpace(_points, camera);
if (!Toolkit.utDrawPoints(ref verts[0].X, verts.Length))
throw new FrameworkException();
}
if (_lines.Count > 0)
{
Vector3[] verts = ConvertPointsToViewSpace(_lines, camera);
if (!Toolkit.utDrawLines(ref verts[0].X, verts.Length))
throw new FrameworkException();
}
/* These will move down to Swap() once I code the double buffering */
_points.Clear();
_lines.Clear();
}