void Membrane_MouseMove(Membrane sender, List<Intersection> intersections, System.Windows.Forms.MouseEventArgs e)
{
bool RedrawNeeded = false;
Options.Viewport.AreUpdatesDisabled = true;
IEnumerable<Intersection> TriangleIntersections = intersections.Where(i => i.Target.GetType() == typeof (Triangle));
IEnumerable<Intersection> PointIntersections = intersections.Where(i => i.Target.GetType() == typeof(SurfacePoint));
bool IsPointForemost = PointIntersections.Count() > 0 ? PointIntersections.First() == intersections.First() : false;
if (TriangleIntersections.Count() > 0)
{
Triangle PickedTriangle = (Triangle)TriangleIntersections.First().Target;
Vector3 Position = TriangleIntersections.First().Position;
TextCursorPosition.Text = $"{Position.X:0.00}, {Position.Y:0.00}, {Position.Z:0.00} Å";
if (PickedTriangle != null && e.Button == System.Windows.Forms.MouseButtons.Left) // Extent triangle selection
{
if (KeyboardHelper.ShiftDown() && !KeyboardHelper.AltDown())
{
sender.SelectTriangles(new[] { PickedTriangle });
RedrawNeeded = true;
}
else if (KeyboardHelper.AltDown() && !KeyboardHelper.ShiftDown())
{
sender.DeselectTriangles(new[] { PickedTriangle });
RedrawNeeded = true;
}
}
else if (KeyboardHelper.CtrlDown() && !IsPointForemost && !KeyboardHelper.ShiftDown() && !KeyboardHelper.AltDown()) // Show surface point preview
{
sender.PreviewGroup.CopyPropertiesFrom(sender.ActiveGroup);
Vector3 PointPosition = Position;
if (sender.PreviewGroup.Depiction == PointDepiction.LocalSurface && sender.TomogramTexture != null) // Discretize position in case of local isosurface
{
Vector3 TomoOffset = sender.TomogramTexture.Offset;
float Scale = Options.PixelScale.X;
PointPosition.X = (float)Math.Round((Position.X - TomoOffset.X) / Scale) * Scale + TomoOffset.X;
PointPosition.Y = (float)Math.Round((Position.Y - TomoOffset.Y) / Scale) * Scale + TomoOffset.Y;
PointPosition.Z = (float)Math.Round((Position.Z - TomoOffset.Z) / Scale) * Scale + TomoOffset.Z;
}
if (sender.PreviewGroup.Points.Count == 0 ||
(sender.PreviewGroup.Points[0].Position - PointPosition).Length > 0.1f)
{
float PsiDiff = 0;
if (sender.PreviewGroup.Points.Count == 1)
{
OpenTK.Matrix3 OldFrame = sender.PreviewGroup.Points[0].TransformedMatrix;
OpenTK.Matrix3 NewFrame = PickedTriangle.GetPlaneMatrix3();
OpenTK.Matrix3 DiffFrame = OpenTK.Matrix3.Transpose(OldFrame) * NewFrame;
PsiDiff = (float)Math.Atan2(DiffFrame.Column0.Y, DiffFrame.Column0.X);
}
if (sender.PreviewGroup.Points.Count == 1)
sender.PreviewGroup.Points.RemoveAt(0);
else if (sender.PreviewGroup.Points.Count > 1)
throw new Exception("Preview group has more than 1 point, but it really should not.");
float Offset = (float)sender.SurfaceOffset * Options.PixelScale.X;
Vector3 TriangleGlobal = Position - PickedTriangle.Normal * Offset;
Vector3 TriangleLocal = PickedTriangle.ToBarycentric(TriangleGlobal);
sender.PreviewGroup.Points.Add(new SurfacePoint(PointPosition, PickedTriangle, TriangleLocal, Offset, PsiDiff));
RedrawNeeded = true;
}
}
else if (!KeyboardHelper.CtrlDown() || IsPointForemost) // Hide surface point preview
{
if (Options.Membrane.PreviewGroup.Points.Count == 1)
{
Options.Membrane.PreviewGroup.Points.RemoveAt(0);
RedrawNeeded = true;
}
else if (Options.Membrane.PreviewGroup.Points.Count > 1)
throw new Exception("Preview group has more than 1 point, but it really should not.");
}
if (KeyboardHelper.CtrlDown() && DraggingPoint != null && TriangleIntersections.Any())
{
Vector3 PointPosition = Position;
if (DraggingPoint.Group.Depiction == PointDepiction.LocalSurface && sender.TomogramTexture != null)
{
Vector3 TomoOffset = sender.TomogramTexture.Offset;
float Scale = Options.PixelScale.X;
PointPosition.X = (float)Math.Round((Position.X - TomoOffset.X) / Scale) * Scale + TomoOffset.X;
PointPosition.Y = (float)Math.Round((Position.Y - TomoOffset.Y) / Scale) * Scale + TomoOffset.Y;
PointPosition.Z = (float)Math.Round((Position.Z - TomoOffset.Z) / Scale) * Scale + TomoOffset.Z;
}
float PsiDiff = 0;
OpenTK.Matrix3 OldFrame = DraggingPoint.TransformedMatrix;
OpenTK.Matrix3 NewFrame = PickedTriangle.GetPlaneMatrix3();
OpenTK.Matrix3 DiffFrame = OpenTK.Matrix3.Transpose(OldFrame) * NewFrame;
PsiDiff = (float)Math.Atan2(DiffFrame.Column0.Y, DiffFrame.Column0.X);
float Offset = (float)sender.SurfaceOffset * Options.PixelScale.X;
Vector3 TriangleGlobal = Position - PickedTriangle.Normal * Offset;
Vector3 TriangleLocal = PickedTriangle.ToBarycentric(TriangleGlobal);
DraggingPoint.OriginalMatrix = NewFrame;
DraggingPoint.Position = PointPosition;
DraggingPoint.SurfaceOffset = Offset;
DraggingPoint.Psi = PsiDiff;
DraggingPoint.Face = PickedTriangle;
DraggingPoint.BarycentricCoords = TriangleLocal;
DraggingPoint.Group.PointCloud.UpdateBuffers();
if (DraggingPoint.Group.Depiction == PointDepiction.LocalSurface) // Only local surface has to be updated when position changes
DraggingPoint.Group.UpdateDepiction();
RedrawNeeded = true;
}
}
Options.Viewport.AreUpdatesDisabled = false;
if (RedrawNeeded)
Options.Viewport.Redraw();
}
void Membrane_MouseClick(Membrane sender, List<Intersection> intersections, System.Windows.Forms.MouseEventArgs e)
{
IEnumerable<Intersection> TriangleIntersections = intersections.Where(i => i.Target.GetType() == typeof(Triangle));
IEnumerable<Intersection> PointIntersections = intersections.Where(i => i.Target.GetType() == typeof(SurfacePoint));
bool IsPointForemost = PointIntersections.Count() > 0 ? PointIntersections.First() == intersections.First() : false;
if (KeyboardHelper.ShiftDown() || KeyboardHelper.AltDown() || KeyboardHelper.CtrlDown())
{
if (TriangleIntersections.Count() > 0 && !IsPointForemost)
{
Triangle ClickedTriangle = (Triangle)TriangleIntersections.First().Target;
if (KeyboardHelper.ShiftDown() && !KeyboardHelper.AltDown() && !KeyboardHelper.CtrlDown()) // Select triangles
{
sender.SelectTriangles(new[] { ClickedTriangle });
}
else if (KeyboardHelper.AltDown() && !KeyboardHelper.ShiftDown() && !KeyboardHelper.CtrlDown()) // Deselect triangles
{
sender.DeselectTriangles(new[] { ClickedTriangle });
}
else if (KeyboardHelper.CtrlDown() && !KeyboardHelper.ShiftDown() && !KeyboardHelper.AltDown()) // Create a surface point
{
if (sender.PreviewGroup.Points.Count == 1) // If there is already a preview point, keep it for its possibly non-default Psi
{
SurfacePoint PreviewPoint = sender.PreviewGroup.Points[0];
sender.PreviewGroup.Points.RemoveAt(0);
sender.ActiveGroup.Points.Add(PreviewPoint);
}
else // If no preview points, create one from scratch with Psi = 0
{
Vector3 Position = TriangleIntersections.First().Position;
float Offset = (float)sender.SurfaceOffset * Options.PixelScale.X;
Vector3 TriangleGlobal = Position - ClickedTriangle.Normal * Offset;
Vector3 TriangleLocal = ClickedTriangle.ToBarycentric(TriangleGlobal);
sender.ActiveGroup.Points.Add(new SurfacePoint(Position, ClickedTriangle, TriangleLocal, Offset, 0));
}
Options.Viewport.Redraw();
}
}
}
}