示例#1
0
        private void PictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            // Update pixel value label
            float  val = PictureBox.GetValue(new Vec2(e.Location));
            string valstr;

            if (float.IsNaN(val))
            {
                valstr = "No value";
            }
            else
            {
                valstr = val.ToString();
            }

            Vec2 picPos = PictureBox.ScreenToPicture(new Vec2(e.Location));

            if (PictureBox.Zoom != 1)
            {
                labelPixelValue.Text = $"({picPos.X:F2}, {picPos.Y:F2}): {valstr}";
            }
            else
            {
                labelPixelValue.Text = $"({picPos.X:F0}, {picPos.Y:F0}): {valstr}";
            }

            if (PanStartMousePosition != Point.Empty)
            {
                // Pan image

                Vec2 delta = (new Vec2(e.Location) - new Vec2(PanStartMousePosition)) / Zoom;
                PictureBox.PicturePosition = (new Vec2(PanStartPicturePosition) - delta).ToPointF();

                UpdateUI();
            }
            else if (ActiveAnnotation != null && e.Button == MouseButtons.Left)
            {
                if (ActiveControlPoint >= 0)
                {
                    // Move control point
                    Vec3 pos = new Vec3(PictureBox.ScreenToPicture(new Vec2(e.Location)), PictureBox.Slice);
                    ActiveAnnotation.ControlPoints[ActiveControlPoint] = pos;
                }
                else
                {
                    // Move all control points
                    Vec3 delta = new Vec3(PictureBox.ScreenToPicture(new Vec2(e.Location)), PictureBox.Slice) - controlPointSelectLocation;

                    for (int n = 0; n < ActiveAnnotation.ControlPoints.Count; n++)
                    {
                        ActiveAnnotation.ControlPoints[n] = oldControlPointLocations[n] + delta;
                    }
                }
                Refresh();

                UpdateProfile();
            }
        }