private static void SnapLineToNearestPoint(RulerLine line, IEnumerable <Quadrangle> hulls)
{
var step = 1f;
var mousePos = container.LocalMousePosition();
if (!sceneView.Input.IsKeyPressed(Key.Shift))
{
step = (float)Math.Truncate(RulersWidget.CalculateEffectiveStep()) / RulersWidget.Tesselation;
}
var curValue = new Vector2(Utils.RoundTo(mousePos.X, step), Utils.RoundTo(mousePos.Y, step));
if (SceneViewCommands.SnapRulerLinesToWidgets.Checked)
{
var mask = line.RulerOrientation.GetDirection();
foreach (var hull in hulls)
{
for (int i = 0; i < 4; i++)
{
if (((hull[i] - mousePos) * mask).Length < ((mousePos - curValue) * mask).Length &&
!IsRulerContainLine(line.RulerOrientation.GetComponentFor(hull[i]), line.RulerOrientation)
)
{
line.MakePassingThroughPoint(hull[i]);
Window.Current.Invalidate();
return;
}
}
}
}
if (!IsRulerContainLine(line.RulerOrientation.GetComponentFor(curValue), line.RulerOrientation))
{
line.MakePassingThroughPoint(curValue);
Window.Current.Invalidate();
}
}
