private static bool IsThetaMultipleOf90Degress(double theta)
{
double x = Math.Abs(Math.Sin(theta));
double num4 = Math.Abs(Math.Cos(theta));
if (!DoubleUtil.IsCloseToZero(x) && !DoubleUtil.IsCloseToZero(num4))
{
return(false);
}
return(true);
}
public DoubleExtension(double value)
{
if (DoubleUtil.IsCloseToZero(value))
{
_boxedValue = BoxedConstants.Double.Zero;
}
else if (DoubleUtil.IsCloseToOne(value))
{
_boxedValue = BoxedConstants.Double.One;
}
else if (value.IsNaN())
{
_boxedValue = BoxedConstants.Double.NaN;
}
_boxedValue = value;
}
public static bool IsCloseToZero(this PointDouble pt) => (DoubleUtil.IsCloseToZero(pt.X) && DoubleUtil.IsCloseToZero(pt.Y));
public static bool IsCloseToZero(this VectorDouble vec) => (DoubleUtil.IsCloseToZero(vec.X) && DoubleUtil.IsCloseToZero(vec.Y));
private bool AutoScrollIfNecessary(PointDouble position)
{
if (!this.autoScroll || !this.CanPan())
{
return(false);
}
RectDouble viewportCanvasBounds = this.CanvasView.ViewportCanvasBounds;
RectDouble canvasBounds = this.CanvasView.GetCanvasBounds();
double x = DoubleUtil.Lerp((viewportCanvasBounds.Left + viewportCanvasBounds.Right) / 2.0, position.X, 1.02);
PointDouble num3 = new PointDouble(x, DoubleUtil.Lerp((viewportCanvasBounds.Top + viewportCanvasBounds.Bottom) / 2.0, position.Y, 1.02));
double num15 = (num3.X < viewportCanvasBounds.Left) ? ((double)(-1)) : ((num3.X > viewportCanvasBounds.Right) ? ((double)1) : ((double)0));
double y = (num3.Y < viewportCanvasBounds.Top) ? ((double)(-1)) : ((num3.Y > viewportCanvasBounds.Bottom) ? ((double)1) : ((double)0));
VectorDouble vec = new VectorDouble(num15, y);
if (vec.IsCloseToZero())
{
return(false);
}
TimeSpan span = (TimeSpan)(DateTime.UtcNow - this.lastAutoScrollTime);
double num5 = DoubleUtil.Clamp(span.TotalSeconds, 0.0, 0.1);
if (DoubleUtil.IsCloseToZero(num5))
{
return(false);
}
double num6 = (double)AppSettings.Instance.Workspace.AutoScrollViewportPxPerSecond.Value;
VectorDouble viewportVec = (VectorDouble)((num5 * vec) * num6);
PointDouble viewportCanvasOffset = this.CanvasView.ViewportCanvasOffset;
VectorDouble num9 = this.CanvasView.ConvertViewportToCanvas(viewportVec);
double left = UIUtil.ScaleWidth((double)5.0);
double top = UIUtil.ScaleHeight((double)5.0);
ThicknessDouble num12 = new ThicknessDouble(left, top, left, top);
VectorDouble zero = VectorDouble.Zero;
if ((num9.X < 0.0) && (viewportCanvasBounds.Left > -num12.Left))
{
zero.X = Math.Max(num9.X, -(viewportCanvasBounds.Left + num12.Left));
}
if ((num9.Y < 0.0) && (viewportCanvasBounds.Top > -num12.Top))
{
zero.Y = Math.Max(num9.Y, -(viewportCanvasBounds.Top + num12.Top));
}
if ((num9.X > 0.0) && (viewportCanvasBounds.Right < (canvasBounds.Right + num12.Right)))
{
zero.X = Math.Min(num9.X, (canvasBounds.Right + num12.Right) - viewportCanvasBounds.Right);
}
if ((num9.Y > 0.0) && (viewportCanvasBounds.Bottom < (canvasBounds.Bottom + num12.Bottom)))
{
zero.Y = Math.Min(num9.Y, (canvasBounds.Bottom + num12.Bottom) - viewportCanvasBounds.Bottom);
}
if (zero.IsCloseToZero())
{
return(false);
}
PointDouble num14 = viewportCanvasOffset + zero;
this.ResetLastAutoScrollTime();
this.CanvasView.ViewportCanvasOffset = num14;
this.Update();
return(true);
}