xamarin - SkiaSharp 不使用 StrokeAndFill 填充三角形

Question

我正在尝试绘制和填充一个三角形。我提到了一个 android - 问题 How to draw filled triangle on android Canvas并做了以下事情。它绘制了三角形，但没有填充它。如何填满？另外，是否可以用与线条颜色不同的颜色填充它？

Xamarin 表单

private void OnPainting(object sender, SKPaintSurfaceEventArgs e)
{
        var surface = e.Surface;
        var canvas = surface.Canvas;
        canvas.Clear(SKColors.White);


        var pathStroke2 = new SKPaint
        {
            IsAntialias = true,
            Style = SKPaintStyle.StrokeAndFill,
            Color = new SKColor(244, 0, 110, 200),
            StrokeWidth = 5
        };

        var path2 = new SKPath { FillType = SKPathFillType.EvenOdd };
        path2.MoveTo(0, 0);
        path2.LineTo(0, 140);
        path2.MoveTo(0, 140);
        path2.LineTo(140, 140);
        path2.MoveTo(140, 140);
        path2.LineTo(0, 0);
        path2.Close();
        canvas.DrawPath(path2, pathStroke2);

    }

Answer 1

您不需要同时使用 LineTo() 和 MoveTo() - 我怀疑这样做会破坏填充算法。相反，只需使用

path2.MoveTo(0, 0);
path2.LineTo(0, 140);
path2.LineTo(140, 140);
path2.LineTo(0, 0);
path2.Close();