// Methods
public void Pick(Scene scene, int x, int y)
{
scene.DrawScene(RenderState.Select);
fbManager.ReadFBO(RenderState.Select);
int[] viewport = new int[4];
GL.GetInteger(GetPName.Viewport, viewport);
int height = viewport[3];
Byte4 pixel = new Byte4();
GL.ReadPixels(x, height - y, 1, 1, PixelFormat.Rgba, PixelType.UnsignedByte, ref pixel);
// Unselect previously selected object
if (info.Selected != null)
{
info.Selected.IsSelected = false;
}
// Get newly selected object reference
ISelectable newPick = PickRegister.Instance.LookupSelectable((int)pixel.ToUInt32());
if (newPick != null)
{
pollingTimer.Start();
info.Selected = newPick;
info.Selected.Moving = false;
info.Selected.Velocity = Vector3.Zero;
info.SurfaceCoordinate = unProject(x, y);
info.Selected.IsSelected = true;
console.AddText("Cube Id #" + info.Selected.Id + " selected");
info.SelectionOffset = info.Selected.Position - info.SurfaceCoordinate.Xyz;
EnableDrag();
}
else
{
info.Selected = null;
}
}
protected override void OnRenderFrame(FrameEventArgs e)
{
scene1.DrawScene(RenderState.Render);
if (showingSelectBuffer)
{
fbManager.ReadFBO(RenderState.Select);
GL.BlitFramebuffer(0, 0, Width, Height, 0, 0, Width, Height, ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Nearest);
}
else
{
console.Draw();
}
GL.Flush();
SwapBuffers();
}