本文整理汇总了C#中System.Drawing.PointD.MultiplyScalar方法的典型用法代码示例。如果您正苦于以下问题：C# PointD.MultiplyScalar方法的具体用法？C# PointD.MultiplyScalar怎么用？C# PointD.MultiplyScalar使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Drawing.PointD的用法示例。
在下文中一共展示了PointD.MultiplyScalar方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DrawLine
protected void DrawLine(RectangleD worldRect, Rectangle canvasRect, Graphics g,
Pen pen, BrushesStorage brushes, bool isArrow)
{
// получить точки линии (как проекции от края до края экрана или просто точки отрезка)
PointD[] points;
if (LineStyle == TrendLineStyle.Отрезок || LineStyle == TrendLineStyle.Стрелка ||
LineStyle == TrendLineStyle.ОтрезокСМаркерами)
{
points = new[] { linePoints[0], linePoints[1] };
}
else
{
points = new PointD[2];
if (linePoints[0].X == linePoints[1].X)
{
points[0] = new PointD(linePoints[0].X, worldRect.Bottom);
points[1] = new PointD(linePoints[0].X, worldRect.Top);
}
else
{
double k = (linePoints[1].Y - linePoints[0].Y) /
(linePoints[1].X - linePoints[0].X);
double b = linePoints[1].Y - k * linePoints[1].X;
points[0] = new PointD(worldRect.Left, worldRect.Left * k + b);
points[1] = new PointD(worldRect.Right, worldRect.Right * k + b);
}
}
screenPointA = Conversion.WorldToScreenF(points[0], worldRect, canvasRect);
screenPointB = Conversion.WorldToScreenF(points[1], worldRect, canvasRect);
// провести линию
if (!isArrow)
g.DrawLine(pen, screenPointA, screenPointB);
// стрелочка на конце
else
DrawArrow(g, pen, screenPointA, screenPointB);
// если линия декорирована
if (LineStyle == TrendLineStyle.ОтрезокСМаркерами || LineStyle == TrendLineStyle.ЛинияСМаркерами)
{
var length = Math.Sqrt((screenPointA.X - screenPointB.X) * (screenPointA.X - screenPointB.X) +
(screenPointA.Y - screenPointB.Y) * (screenPointA.Y - screenPointB.Y));
if (length > 0)
{
var brushMarker = brushes.GetBrush(pen.Color);
var patternStep = 50 * Math.Abs((int)PixelScale);
var wholeVector = new PointD(screenPointB.X - screenPointA.X, screenPointB.Y - screenPointA.Y);
for (var i = 0; i <= (length - patternStep); i += patternStep)
{
var a = screenPointA + wholeVector.MultiplyScalar(i / length);
var b = screenPointA + wholeVector.MultiplyScalar((i + 1) / length);
// нарисовать декоративный элемент, заключенный между точками a-b
DrawDecoration(a, b, g, brushMarker);
}
}
}
// нарисовать квадратики с текстом в начале и в конце отрезка
if (ShowTags)
{
var brushText = brushes.GetBrush(LineColor);
var brushFill = brushes.GetBrush(Color.FromArgb(128, ShapeFillColor));
// начало линии - две строки вида "10.07.2013 22:02, 1.5132", "18.07.2013 13:40, 1.4989"
const int textPadding = 4;
var textStart = new List<string>
{
Owner.Owner.StockSeries.GetCandleOpenTimeByIndex((int) Math.Abs(points[0].X)).ToString("dd.MM.yyyy HH:mm") +
", " +
points[0].Y.ToStringUniformPriceFormat(),
Owner.Owner.StockSeries.GetCandleOpenTimeByIndex((int) Math.Abs(points[1].X)).ToString("dd.MM.yyyy HH:mm") +
", " +
points[1].Y.ToStringUniformPriceFormat()
};
var rect = GetTagRectangle(screenPointA, canvasRect, g, textStart, textPadding,
new PointD(points[0].X - points[1].X, points[0].Y - points[1].Y));
g.FillRectangle(brushFill, rect);
g.DrawRectangle(pen, rect);
// текст...
DrawTagTextLines(g, rect, textPadding, textStart, brushText);
// кончик линии - текст вида "-0.00206", "-206 пп"
var delta = points[1].Y - points[0].Y;
textStart = new List<string>
{
delta.ToString("f" + DalSpot.Instance.GetPrecision(Owner.Owner.Owner.Symbol)),
DalSpot.Instance.GetPointsValue(Owner.Owner.Owner.Symbol, (float)delta).ToStringUniform(1) + " пп"
};
rect = GetTagRectangle(screenPointB, canvasRect, g, textStart, textPadding,
new PointD(points[1].X - points[0].X, points[1].Y - points[0].Y));
g.FillRectangle(brushFill, rect);
g.DrawRectangle(pen, rect);
// текст...
DrawTagTextLines(g, rect, textPadding, textStart, brushText);
}
}