/// <summary> 检查X序列的值的单调性 </summary>
/// <param name="xValues"></param>
private static CurveShape CheckXTrend(double[] xValues)
{
CurveShape cs = CurveShape.XAscend;
bool ascend = (xValues[1].CompareTo(xValues[0]) > 0);
if (ascend)
{
cs = CurveShape.XAscend;
for (int i = 2; i < xValues.Length; i++)
{
// 当相邻的两个个值相等时，认为不妨碍其原来的单调性
if (xValues[i] - xValues[i - 1] < 0)
{
return(CurveShape.XNonMonotonic);
}
}
}
else
{
cs = CurveShape.XDescend;
for (int i = 2; i < xValues.Length; i++)
{
if (xValues[i] - xValues[i - 1] > 0)
{
return(CurveShape.XNonMonotonic);
}
}
}
return(cs);
}
/// <summary>
/// This is the method that actually does the work.
/// </summary>
/// <param name="DA">The DA object is used to retrieve from inputs and store in outputs.</param>
protected override void SolveInstance(IGH_DataAccess DA)
{
List <Point3d> cp = new List <Point3d>();
DA.GetDataList(0, cp);
bool closed = false;
DA.GetData(1, ref closed);
double tension = 0;
DA.GetData(2, ref tension);
Pen outline = null;
DA.GetData(3, ref outline);
Pen fill = null;
DA.GetData(4, ref fill);
Shape2D shape = new CurveShape(cp, closed, (float)tension);
if (outline != null)
{
shape.outline(outline);
}
if (fill != null)
{
shape.fill(fill);
}
DA.SetData(0, shape);
}
public static float Sample(this CurveShape shape, float alpha, float a = 0.0f, float b = 0.0f)
{
switch (shape)
{
default:
case CurveShape.Linear: return(alpha);
case CurveShape.Cosine:
{
/// <summary> 考虑X坐标的分布，根据所占X轴的区间的分段数来进行缩减，缩减后的数组中的元素个数不大于 <paramref name="segments" />+1。 </summary>
/// <param name="segments"> 将整条曲线所占的X轴区间分割为 segments 段，所以其值至少为1，且无上限。 </param>
/// <remarks>
/// 此收缩方法适用于数据对象随X轴增加的变化不大的情况。
/// 比如基坑监测中每一天的位移。
/// </remarks>
public ShrinkResult ShrinkByXAxis(int segments)
{
if (segments > 0)
{
CurveShape trend = CheckXTrend(_xValues);
if (trend == CurveShape.XAscend)
{
return(ShrinkByAscendXAxis(segments));
}
else if (trend == CurveShape.XDescend)
{
// 先将源曲线的X、Y序列反过来
var originalX = _xValues;
try
{
// 先将源曲线的X、Y序列反过来
_xValues = originalX.Reverse().ToArray();
//
Result = ShrinkByAscendXAxis(segments);
}
finally
{
// 最后务必将源XY序列复原
_xValues = originalX;
// 也要将结果再反过来
FilteredIds = FilteredIds.Select(r => Length - 1 - r).ToArray();
}
}
else
{
ErrorMessage = @"X序列非单调。";
Result = ShrinkResult.XNonMonotonic;
}
}
else
{
ErrorMessage = @"指定的分段数至少为1，且小于 总点数-1。";
Result = ShrinkResult.NotStarted;
}
return(Result);
}
public static float Sample(this CurveShape shape, float alpha, float a = 0.0f, float b = 0.0f)
{
switch (shape)
{
default:
case CurveShape.Linear: return(alpha);
case CurveShape.Cosine:
{
// TODO(local): "strengthen" the curve based on `a` and `b`
float angle = alpha * MathL.Pi;
return((1 - (float)Math.Cos(angle)) * 0.5f);
}
case CurveShape.ThreePoint:
{
float t = (a - MathL.Sqrt(a * a + alpha - 2 * a * alpha)) / (-1 + 2 * a);
return(2 * (1 - t) * t * b + t * t);
}
}
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
graphicsProcessor.MouseUpEvent();
switch (ToggleSelection)
{
case 0:
{
if (this.RectPoint1 != this.RectPoint2)
{
ITransformable item;
if (IsRectOrEll)
{
item = new RectangleShape(new Size(Math.Max(RectPoint1.X, RectPoint2.X) - Math.Min(RectPoint1.X, RectPoint2.X),
Math.Max(RectPoint1.Y, RectPoint2.Y) - Math.Min(RectPoint1.Y, RectPoint2.Y)),
new Point(Math.Min(RectPoint1.X, RectPoint2.X),
Math.Min(RectPoint1.Y, RectPoint2.Y)), Color.Transparent, colorDialog1.Color, 200, "Rectangle Shape");
Items.Add(item);
ToggleSelection = 1;
}
else
{
item = new EllipseShape(new Size(Math.Max(RectPoint1.X, RectPoint2.X) - Math.Min(RectPoint1.X, RectPoint2.X),
Math.Max(RectPoint1.Y, RectPoint2.Y) - Math.Min(RectPoint1.Y, RectPoint2.Y)),
new Point(Math.Min(RectPoint1.X, RectPoint2.X),
Math.Min(RectPoint1.Y, RectPoint2.Y)), Color.Transparent, colorDialog1.Color, 200, "Ellipse Shape");
Items.Add(item);
ToggleSelection = 1;
}
this.GetRectPoints(e.X, e.Y);
SelectedItem = (IDrawable)item;
graphicsProcessor.SelectedItem = (ITransformable)SelectedItem;
this.CustomRefresh();
}
break;
}
case 5:
{
LineShape item = new LineShape(Points[0], new Point(e.X + 1, e.Y + 1), colorDialog1.Color, 255, "Line Shape");
Items.Add(item);
Points.Clear();
ToggleSelection = 1;
SelectedItem = item;
graphicsProcessor.SelectedItem = (ITransformable)SelectedItem;
this.CustomRefresh();
break;
}
case 6:
{
SelectedItem = null;
break;
}
case 7:
{
ITransformable item;
if (Points.Count > 1)
{
item = new CurveShape(new List <Point>(Points), colorDialog1.Color, 255, "Curve Shape");
Items.Add(item);
ToggleSelection = 1;
SelectedItem = (IDrawable)item;
graphicsProcessor.SelectedItem = (ITransformable)SelectedItem;
}
Points.Clear();
this.CustomRefresh();
break;
}
}
HelpSelectedItem = null;
this.CustomRefresh();
}
public Point(time_t pos, float alpha, CurveShape shape)
{
Position = pos;
Alpha = alpha;
Shape = shape;
}
