private Tuple <Coordinate, Coordinate> SnapBoxCoordinatesIfNeeded(Viewport2D viewport, BaseBoxTool.BoxState state, Document document, Coordinate start, Coordinate end)
{
if (state.Action == BaseBoxTool.BoxAction.Resizing && state.Handle == BaseBoxTool.ResizeHandle.Center)
{
// Pick the corner to snap
var ms = state.MoveStart;
var pts = viewport.Flatten(state.PreTransformBoxStart);
var pte = viewport.Flatten(state.PreTransformBoxEnd);
var ss = SnapIfNeeded(start, document);
var se = SnapIfNeeded(end, document);
var middle = (pts + pte) / 2;
var delta = ss - start;
if (ms.Y > middle.Y)
{
// Top
delta.Y = se.Y - end.Y;
}
if (ms.X > middle.X)
{
// Right
delta.X = se.X - end.X;
}
start += delta;
end += delta;
}
var cstart = viewport.Expand(start) + viewport.GetUnusedCoordinate(state.BoxStart);
var cend = viewport.Expand(end) + viewport.GetUnusedCoordinate(state.BoxEnd);
return(Tuple.Create(cstart, cend));
}
protected override void LeftMouseDownToDraw(Viewport2D viewport, ViewportEvent e)
{
base.LeftMouseDownToDraw(viewport, e);
if (_lastBox == null)
{
return;
}
State.BoxStart += viewport.GetUnusedCoordinate(_lastBox.Start);
State.BoxEnd += viewport.GetUnusedCoordinate(_lastBox.End);
_updatePreview = true;
}
/// <summary>
/// Get the VM points at the provided coordinate, ordered from top to bottom (for the supplied viewport).
/// </summary>
/// <param name="x">The X coordinate</param>
/// <param name="y">The Y coordinate</param>
/// <param name="viewport">The viewport</param>
/// <returns>The points ordered from top to bottom, or an empty set if no points were found</returns>
public List <VMPoint> GetVerticesAtPoint(int x, int y, Viewport2D viewport)
{
var p = viewport.ScreenToWorld(x, y);
var d = 5 / viewport.Zoom; // Tolerance value = 5 pixels
// Order by the unused coordinate in the view (which is the up axis) descending to get the "closest" point
return((from point in Points
let c = viewport.Flatten(point.Coordinate)
where p.X >= c.X - d && p.X <= c.X + d && p.Y >= c.Y - d && p.Y <= c.Y + d
let unused = viewport.GetUnusedCoordinate(point.Coordinate)
orderby unused.X + unused.Y + unused.Z descending
select point).ToList());
}
private MapObject SelectionTest(Viewport2D viewport, ViewportEvent e)
{
// Create a box to represent the click, with a tolerance level
var unused = viewport.GetUnusedCoordinate(new Coordinate(100000, 100000, 100000));
var tolerance = 4 / viewport.Zoom; // Selection tolerance of four pixels
var used = viewport.Expand(new Coordinate(tolerance, tolerance, 0));
var add = used + unused;
var click = viewport.Expand(viewport.ScreenToWorld(e.X, viewport.Height - e.Y));
var box = new Box(click - add, click + add);
var centerHandles = Sledge.Settings.Select.DrawCenterHandles;
var centerOnly = Sledge.Settings.Select.ClickSelectByCenterHandlesOnly;
// Get the first element that intersects with the box, selecting or deselecting as needed
return(Document.Map.WorldSpawn.GetAllNodesIntersecting2DLineTest(box, centerHandles, centerOnly).FirstOrDefault());
}
protected override void Render2D(Viewport2D vp)
{
base.Render2D(vp);
if (_currentTool != null)
{
_currentTool.Render2D(vp);
}
// Render out the solid previews
GL.Color3(Color.Pink);
Matrix.Push();
var matrix = vp.GetModelViewMatrix();
GL.MultMatrix(ref matrix);
MapObjectRenderer.DrawWireframe(_copies.Keys.SelectMany(x => x.Faces), true, false);
Matrix.Pop();
// Draw in order by the unused coordinate (the up axis for this viewport)
var ordered = (from point in Points
where (point.IsMidPoint && _showPoints != ShowPoints.Vertices) || (!point.IsMidPoint && _showPoints != ShowPoints.Midpoints)
let unused = vp.GetUnusedCoordinate(point.Coordinate)
orderby point.IsSelected, unused.X + unused.Y + unused.Z
select point).ToList();
// Render out the point handles
var z = (double)vp.Zoom;
GL.Begin(BeginMode.Quads);
foreach (var point in ordered)
{
var c = vp.Flatten(point.Coordinate);
GL.Color3(Color.Black);
GLX.Square(new Vector2d(c.DX, c.DY), 4, z, true);
GL.Color3(point.GetColour());
GLX.Square(new Vector2d(c.DX, c.DY), 3, z, true);
}
GL.End();
}
protected Tuple <Coordinate, Coordinate> GetResizedBoxCoordinates(Viewport2D viewport, ViewportEvent e)
{
if (State.Action != BoxAction.Resizing && State.Action != BoxAction.Drawing)
{
return(Tuple.Create(State.BoxStart, State.BoxEnd));
}
var now = SnapIfNeeded(viewport.ScreenToWorld(e.X, viewport.Height - e.Y));
var cstart = viewport.Flatten(State.BoxStart);
var cend = viewport.Flatten(State.BoxEnd);
// Proportional scaling
var ostart = viewport.Flatten(State.PreTransformBoxStart ?? Coordinate.Zero);
var oend = viewport.Flatten(State.PreTransformBoxEnd ?? Coordinate.Zero);
var owidth = oend.X - ostart.X;
var oheight = oend.Y - ostart.Y;
var proportional = KeyboardState.Ctrl && State.Action == BoxAction.Resizing && owidth != 0 && oheight != 0;
switch (State.Handle)
{
case ResizeHandle.TopLeft:
cstart.X = now.X;
cend.Y = now.Y;
break;
case ResizeHandle.Top:
cend.Y = now.Y;
break;
case ResizeHandle.TopRight:
cend.X = now.X;
cend.Y = now.Y;
break;
case ResizeHandle.Left:
cstart.X = now.X;
break;
case ResizeHandle.Center:
var cdiff = cend - cstart;
var distance = GetResizeDistance(viewport, e);
if (distance == null)
{
cstart = viewport.Flatten(State.PreTransformBoxStart) + now - SnapIfNeeded(State.MoveStart);
}
else
{
cstart = viewport.Flatten(State.PreTransformBoxStart) + distance;
}
cend = cstart + cdiff;
break;
case ResizeHandle.Right:
cend.X = now.X;
break;
case ResizeHandle.BottomLeft:
cstart.X = now.X;
cstart.Y = now.Y;
break;
case ResizeHandle.Bottom:
cstart.Y = now.Y;
break;
case ResizeHandle.BottomRight:
cend.X = now.X;
cstart.Y = now.Y;
break;
default:
throw new ArgumentOutOfRangeException();
}
if (proportional)
{
var nwidth = cend.X - cstart.X;
var nheight = cend.Y - cstart.Y;
var mult = Math.Max(nwidth / owidth, nheight / oheight);
var pwidth = owidth * mult;
var pheight = oheight * mult;
var wdiff = pwidth - nwidth;
var hdiff = pheight - nheight;
switch (State.Handle)
{
case ResizeHandle.TopLeft:
cstart.X -= wdiff;
cend.Y += hdiff;
break;
case ResizeHandle.TopRight:
cend.X += wdiff;
cend.Y += hdiff;
break;
case ResizeHandle.BottomLeft:
cstart.X -= wdiff;
cstart.Y -= hdiff;
break;
case ResizeHandle.BottomRight:
cend.X += wdiff;
cstart.Y -= hdiff;
break;
}
}
cstart = viewport.Expand(cstart) + viewport.GetUnusedCoordinate(State.BoxStart);
cend = viewport.Expand(cend) + viewport.GetUnusedCoordinate(State.BoxEnd);
return(Tuple.Create(cstart, cend));
}