public override void OnChangeTargetHeight(int amount)
{
VisualSlope pivothandle = null;
List <IVisualEventReceiver> selectedsectors = mode.GetSelectedObjects(true, false, false, false, false);
List <SectorLevel> levels = new List <SectorLevel>();
if (selectedsectors.Count == 0)
{
levels.Add(level);
}
else
{
foreach (BaseVisualGeometrySector bvgs in selectedsectors)
{
levels.Add(bvgs.Level);
}
if (!levels.Contains(level))
{
levels.Add(level);
}
}
// Try to find a slope handle the user set to be the pivot handle
// TODO: doing this every time is kind of stupid. Maybe store the pivot handle in the mode?
foreach (KeyValuePair <Sector, List <VisualSlope> > kvp in mode.AllSlopeHandles)
{
foreach (VisualSlope handle in kvp.Value)
{
if (handle.Pivot)
{
pivothandle = handle;
break;
}
}
}
// User didn't set a pivot handle, try to find the smart pivot handle
if (pivothandle == null)
{
pivothandle = GetSmartPivotHandle();
}
// Still no pivot handle, cancle
if (pivothandle == null)
{
return;
}
mode.CreateUndo("Change slope");
Plane originalplane = level.plane;
Vector3D p1, p2, p3;
if (pivothandle is VisualVertexSlope)
{
// Build a new plane. Since we only got 2 points (the pivot point of the pivot handle and the vertex slope vertex) we need
// to create a third point. That's done by getting the perpendicular of the line between the aforementioned 2 points, then
// add the perpendicular to the vertex position of the vertex slope vertex
p3 = pivothandle.GetPivotPoint();
Vector2D perp = new Line2D(vertex.Position, p3).GetPerpendicular();
p1 = new Vector3D(vertex.Position, originalplane.GetZ(vertex.Position) + amount);
p2 = new Vector3D(vertex.Position + perp, originalplane.GetZ(vertex.Position + perp) + amount);
}
else // VisualSidedefSlope
{
List <Vector3D> pivotpoints = ((VisualSidedefSlope)pivothandle).GetPivotPoints();
p1 = new Vector3D(vertex.Position, originalplane.GetZ(vertex.Position) + amount);
p2 = pivotpoints[0];
p3 = pivotpoints[1];
}
Plane plane = new Plane(p1, p2, p3, true);
// Apply slope to surfaces
foreach (SectorLevel l in levels)
{
VisualSidedefSlope.ApplySlope(l, plane, mode);
}
mode.SetActionResult("Changed slope.");
}
