Exemple #1
0
        private void PolygonCutterViewer_MouseDown(object sender, MouseEventArgs e)
        {
            MouseEventOld = e;
            int             RealX = MouseEventOld.X;
            int             RealY = MouseEventOld.Y;
            PolygonTriangle SelectedPolygonTriangle = PolygonCutterViewer.SelectedPolygonTriangle;

            switch (SelectionChoice)
            {
                #region None

            case SelectionChoices.None:
                if (PolygonCutterViewer.SelectedPolygonTriangle.SelectionType != PolygonTriangle.SelectionTypes.None)
                {
                    Polygon ActivePolygon = PolygonCutterViewer.SelectedPolygonTriangle.ActivePolygon;

                    if (e.Button == MouseButtons.Left)
                    {
                        SelectionChoice = SelectionChoices.Move;

                        if (SelectedPolygonTriangle.SelectionType == PolygonTriangle.SelectionTypes.Edge)
                        {
                            if (Control.ModifierKeys == Keys.Shift)
                            {
                                SelectedPolygonTriangle.VertexIndex = (short)ActivePolygon.ArrayVertex.Length;

                                ActivePolygon.AddVertexOnEdge(new Vector2(RealX, RealY), SelectedPolygonTriangle.EdgeIndex1, SelectedPolygonTriangle.EdgeIndex2);
                                ActivePolygon.UpdateWorldPosition(Vector2.Zero, 0f);
                            }
                            else if (Control.ModifierKeys == Keys.Alt)
                            {
                                SelectedPolygonTriangle.VertexIndex = (short)ActivePolygon.ArrayVertex.Length;

                                ActivePolygon.SplitEdge(new Vector2(RealX, RealY), SelectedPolygonTriangle.TriangleIndex, SelectedPolygonTriangle.EdgeIndex1, SelectedPolygonTriangle.EdgeIndex2);
                                ActivePolygon.UpdateWorldPosition(Vector2.Zero, 0f);
                            }
                        }
                        else if (SelectedPolygonTriangle.SelectionType == PolygonTriangle.SelectionTypes.Triangle)
                        {
                            if (Control.ModifierKeys == Keys.Shift)
                            {
                                ActivePolygon.SplitTriangle(new Vector2(e.X, e.Y), SelectedPolygonTriangle.TriangleIndex);
                                ActivePolygon.UpdateWorldPosition(Vector2.Zero, 0f);
                            }
                        }
                    }
                    else if (e.Button == MouseButtons.Right)
                    {
                        if (SelectedPolygonTriangle.SelectionType == PolygonTriangle.SelectionTypes.Vertex && SelectedPolygonTriangle.VertexIndex >= 0)    //Delete Vertex.
                        {
                            SelectedPolygonTriangle.ActivePolygon.RemoveVertex(SelectedPolygonTriangle.VertexIndex);
                        }
                        else if (SelectedPolygonTriangle.SelectionType == PolygonTriangle.SelectionTypes.Triangle && SelectedPolygonTriangle.TriangleIndex >= 0)    //Delete Triangle.
                        {
                        }
                    }
                }
                break;

                #endregion

            case SelectionChoices.SplitPolygon:
                PolygonCutterViewer.SplittingPoint1 = new Vector2(e.X, e.Y);
                break;
            }
        }