KBS2.Controls.BlueprintPanel.OnMouseMove C# (CSharp) Méthode

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);
            if(this.ActiveBlueprint == null) return;
            PointF mouseLoc = this.PointToClient(Cursor.Position);
            PointF mouseOffset = new PointF(mouseLoc.X-this._center.X, mouseLoc.Y-this._center.Y);

            int? idState = ((int?)this.HoveredRoom?.GetID() ?? -1) + ((int?)this.HoveredCorner?.GetID() ?? -1) + ((int?)this.HoveredWall?.GetID() ?? -1) ;
            int nullState = (this.HoveredRoom != null ? 1 : 0) + (this.HoveredCorner != null ? 2 : 0) + (this.HoveredWall != null ? 4 : 0);
            int state = nullState + ((int)idState << 3);
            this.HoveredCorner = (this._editMode ? this.ActiveBlueprint.GetCornerAtPoint(mouseOffset, this.Renderer.CornerSizeEdit) : null);
            this.HoveredWall = (this._editMode && this.HoveredCorner == null ? this.ActiveBlueprint.GetWallAtPoint(mouseOffset, this.WallDistance) : null);
            this.HoveredRoom = (this.HoveredWall == null && this.HoveredCorner == null ? this.ActiveBlueprint.GetRoomAtPoint(mouseOffset) : null);
            idState = ((int?)this.HoveredRoom?.GetID() ?? -1) + ((int?)this.HoveredCorner?.GetID() ?? -1) + ((int?)this.HoveredWall?.GetID() ?? -1);
            nullState = (this.HoveredRoom != null ? 1 : 0) + (this.HoveredCorner != null ? 2 : 0) + (this.HoveredWall != null ? 4 : 0);
            int newState = nullState + ((int)idState << 3);

            //Panning
            if(this._panOrigin != PointF.Empty) {
                this._center = new PointF(this._center.X-(this._panOrigin.X-e.Location.X), this._center.Y-(this._panOrigin.Y-e.Location.Y));
                this._panOrigin = e.Location;
                this.Invalidate();
            }

            //Snapping
            if(this.SelectedCorner != null && this._movingCorner) {
                this._snapCorners.Clear();

                float snapX, snapY, closestX, closestY;
                snapX = snapY = closestX = closestY = float.MaxValue;

                foreach(Room room in this.ActiveBlueprint.Rooms) {
                    foreach(Corner corner in room.GetCorners()) {
                        if(corner.Equals(this.SelectedCorner)) continue;

                        float distX = Math.Abs(corner.GetPoint().X-mouseOffset.X);
                        float distY = Math.Abs(corner.GetPoint().Y-mouseOffset.Y);
                        if(distX <= closestX && distX < this.CornerSnapDistance) {
                            snapX = corner.GetPoint().X;
                            closestX = distX;
                            this._snapCorners.Add(corner);
                        }
                        if(distY <= closestY && distY < this.CornerSnapDistance) {
                            snapY = corner.GetPoint().Y;
                            closestY = distY;
                            this._snapCorners.Add(corner);
                        }

                        this._snapCorners.RemoveAll((c) => (!snapX.Equals(c.GetPoint().X) && !snapY.Equals(c.GetPoint().Y)));
                    }
                }

                this.SelectedCorner.SetPoint(new PointF((!snapX.Equals(float.MaxValue) ? snapX : mouseOffset.X), (!snapY.Equals(float.MaxValue) ? snapY : mouseOffset.Y)));
                this.Invalidate();
            }

            if(state != newState) this.Invalidate();
        }