void DrawAxisX(D2DGraphics g)
{
g.RenderTarget.AntialiasMode = AntialiasMode.PerPrimitive;
int startIdx = dataRange.startIdx;
int endIdx = dataRange.endIdx;
StrokeStyleProperties ssp = new StrokeStyleProperties();
ssp.DashStyle = DashStyle.DashDot;
StrokeStyle strokeStyle = new StrokeStyle(D2DGraphics.d2dFactory, ssp);
SolidColorBrush brush2 = new SolidColorBrush(g.RenderTarget, GDIDataD2DUtils.TransToRawColor4(XAxisColor));
g.RenderTarget.DrawLine(new RawVector2(0, Height / 2), new RawVector2(Width, Height / 2), brush2, 0.5f, strokeStyle);
//
float widthStep = Width / xAxisSeqCount;
float numSeq = GetAxisXSeq();
float startNum = startIdx * numSeq;
float numWidth = (endIdx - startIdx) * numSeq;
float numStep = numWidth / xAxisSeqCount;
RawRectangleF rect;
for (int i = 0; i < xAxisSeqCount; i++)
{
float x = (widthStep * i - 100 + widthStep * i + 100) / 2f;
g.RenderTarget.DrawLine(new RawVector2(x, Height / 2), new RawVector2(x, Height / 2 + 3), brush2, 1f);
//
rect = new RawRectangleF(widthStep * i - 100, Height / 2, widthStep * i + 100, Height / 2 + 15);
string str = (startNum + i * numStep).ToString("#.##");
g.RenderTarget.DrawText(str, textFormat, rect, brush2, DrawTextOptions.Clip);
}
}
void DrawDatas(D2DGraphics g)
{
g.RenderTarget.AntialiasMode = AntialiasMode.PerPrimitive;
SolidColorBrush brush = new SolidColorBrush(g.RenderTarget, GDIDataD2DUtils.TransToRawColor4(DataLineColor));
float baselineY = Height / 2;
int startIdx = dataRange.startIdx;
int endIdx = dataRange.endIdx;
float step = Width / (endIdx - startIdx);
int prevIdx = startIdx;
int lastIdx = startIdx;
int sameIdx;
RawVector2 pt1 = new RawVector2(0, -datas[startIdx] * scale + baselineY);
RawVector2 pt2 = new RawVector2();
RawVector2 yrange;
while (lastIdx < endIdx)
{
sameIdx = GetSameAxisxIdx(prevIdx, endIdx, pt1, step, out yrange);
if (sameIdx != prevIdx)
{
g.RenderTarget.DrawLine(
new RawVector2(pt1.X, baselineY - yrange.X),
new RawVector2(pt1.X, baselineY - yrange.Y), brush, 0.5f);
pt2.X = pt1.X;
pt2.Y = -datas[sameIdx] * scale + baselineY;
pt1 = pt2;
prevIdx = sameIdx;
}
//
lastIdx = GetCombineIdx(prevIdx, endIdx, pt1);
pt2.X = (lastIdx - startIdx) * step;
pt2.Y = -datas[lastIdx] * scale + baselineY;
g.RenderTarget.DrawLine(pt1, pt2, brush, 0.5f);
pt1 = pt2;
prevIdx = lastIdx;
}
}
