void window_RenderFrame(object sender, OpenTK.FrameEventArgs e)
{
UpdateMousePositionArgs a = new UpdateMousePositionArgs();
UpdateMousePosition(a);
if (!TouchTest)
{
foreach (MouseEventHandler h in mouseEventHandlers)
{
MouseEventArgs args2 = new MouseEventArgs();
args2.SetX(a.mouseCurrentX);
args2.SetY(a.mouseCurrentY);
args2.SetMovementX((int)a.mouseDeltaX);
args2.SetMovementY((int)a.mouseDeltaY);
h.OnMouseMove(args2);
}
}
foreach (NewFrameHandler h in newFrameHandlers)
{
NewFrameEventArgs args = new NewFrameEventArgs();
args.SetDt((float)e.Time);
h.OnNewFrame(args);
}
window.SwapBuffers();
}
void UpdateMousePosition(UpdateMousePositionArgs args)
{
args.mouseCurrentX = System.Windows.Forms.Cursor.Position.X;
args.mouseCurrentY = System.Windows.Forms.Cursor.Position.Y;
if (!mousePointerLocked)
{
args.mouseCurrentX = args.mouseCurrentX - window.X;
args.mouseCurrentY = args.mouseCurrentY - window.Y;
args.mouseCurrentY = args.mouseCurrentY - System.Windows.Forms.SystemInformation.CaptionHeight;
args.mouseDeltaX = args.mouseCurrentX - mouse_previous.X;
args.mouseDeltaY = args.mouseCurrentY - mouse_previous.Y;
mouse_previous.X = args.mouseCurrentX;
mouse_previous.Y = args.mouseCurrentY;
}
if (!window.Focused)
{
return;
}
if (mousePointerLocked && (!wasMousePointerLocked))
{
mouse_previous.X = args.mouseCurrentX;
mouse_previous.Y = args.mouseCurrentY;
args.freemousejustdisabled = false;
}
wasMousePointerLocked = mousePointerLocked;
if (mousePointerLocked)
{
//There are two versions:
//a) System.Windows.Forms.Cursor and GameWindow.CursorVisible = true.
//It works by centering global mouse cursor every frame.
//*Windows:
// *OK.
// *On a few YouTube videos mouse cursor is not hiding properly.
// That could be just a problem with video recording software.
//*Ubuntu: Broken, mouse cursor doesn't hide.
//*Mac: Broken, mouse doesn't move at all.
//b) OpenTk.Input.Mouse and GameWindow.CursorVisible = false.
//Uses raw mouse coordinates, movement is not accelerated.
//*Windows:
// *OK.
// *Worse than a), because this doesn't use system-wide mouse acceleration.
//*Ubuntu: Broken, crashes with "libxi" library missing.
//*Mac: OK.
if (!IsMac)
{
//a)
int centerx = window.Bounds.Left + (window.Bounds.Width / 2);
int centery = window.Bounds.Top + (window.Bounds.Height / 2);
args.mouseDeltaX = args.mouseCurrentX - mouse_previous.X;
args.mouseDeltaY = args.mouseCurrentY - mouse_previous.Y;
System.Windows.Forms.Cursor.Position =
new Point(centerx, centery);
mouse_previous = new Point(centerx, centery);
}
else
{
//b)
var state = OpenTK.Input.Mouse.GetState();
float dx = state.X - mouse_previous_state.X;
float dy = state.Y - mouse_previous_state.Y;
mouse_previous_state = state;
//These are raw coordinates, so need to apply acceleration manually.
float dx2 = (dx * Math.Abs(dx) * MouseAcceleration1);
float dy2 = (dy * Math.Abs(dy) * MouseAcceleration1);
dx2 += dx * MouseAcceleration2;
dy2 += dy * MouseAcceleration2;
args.mouseDeltaX = dx2;
args.mouseDeltaY = dy2;
}
}
}
