TChartのSeriesにLineを追加して
ふつうに折れ線グラフを書くと次のようになります。
Series1->Clear();
Series1->AddXY(0, 0);
Series1->AddXY(1, 1);
Series1->AddXY(2, 1);
Series1->AddXY(3, 0);
Series1->AddXY(4, -1);
Series1->AddXY(5, -1);
Series1->AddXY(6, 0);
実行結果
このグラフをなめらかな曲線にします。
TBSpline* BSpline = new TBSpline();
BSpline->AddPoint(0, 0);
BSpline->AddPoint(1, 1);
BSpline->AddPoint(2, 1);
BSpline->AddPoint(3, 0);
BSpline->AddPoint(4, -1);
BSpline->AddPoint(5, -1);
BSpline->AddPoint(6, 0);
BSpline->Interpolated = true;
Series1->Clear();
for (int i = 0; i <= BSpline->Fragments; ++i)
{
TVertex Vertex = BSpline->Value((double)i / BSpline->Fragments);
Series1->AddXY(Vertex.X, Vertex.Y);
}
delete BSpline;
実行結果
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