public void SetLabelVisual(int index)
{
if (index < labels.Count) {
float x = labels[index].X_percent * image.Size.Width;
float y = labels[index].Y_percent * image.Size.Height;
float startX = x - clientRect.Width * GlobalVar.SetLabelVisualRatioX;
float startY = y - clientRect.Height * GlobalVar.SetLabelVisualRatioY;
//startX Y转换到原始尺寸坐标
float ratio = (float)image.Size.Width / imageOriginal.Size.Width;
startX = startX / ratio;
startY = startY / ratio;
StartP = new PointF(startX,startY);
MakeImageNow();
}
}