Csharp 在2D数组中绘制椭圆

我正在try 将椭圆绘制成2Darray.我将x和y作为左上角的开始位置，将右下角的x和y作为结束位置.

我正在try 绘制一个完全适合该矩形空间的椭圆. 我使用的算法在开始和结束坐标均匀时有效，但当宽度坐标不均匀时，其一个像素太短，高度相同.

这是我的代码:

private void DrawEllipse(in NexusCoord start, in NexusCoord end, in NexusChar character)
{
    ThrowIfOutOfBounds(start);
    ThrowIfOutOfBounds(end);
    GetOrThrowColorIndex(character.Foreground, character.Background, nameof(character), out var foregroundColorIndex, out var backgroundColorIndex);

    var glyph = new Glyph(character.Value, foregroundColorIndex, backgroundColorIndex);

    var width = end.X - start.X;
    var height = end.Y - start.Y;

    var centerX = width / 2;
    var centerY = height / 2;

    var radiusX = start.X + centerX;
    var radiusY = start.Y + centerY;

    var x = 0;
    var y = centerY;

    var d1 = centerY * centerY - centerX * centerX * centerY;
    var dx = 2 * centerY * centerY * x;
    var dy = 2 * centerX * centerX * y;

    while (dx < dy)
    {
        SetGlyph(new NexusCoord(x + radiusX, y + radiusY), glyph);
        SetGlyph(new NexusCoord(-x + radiusX, y + radiusY), glyph);
        SetGlyph(new NexusCoord(x + radiusX, -y + radiusY), glyph);
        SetGlyph(new NexusCoord(-x + radiusX, -y + radiusY), glyph);

        if (d1 < 0)
        {
            x++;
            dx += 2 * centerY * centerY;
            d1 = d1 + dx + centerY * centerY;
        }
        else
        {
            x++;
            y--;
            dx += 2 * centerY * centerY;
            dy -= 2 * centerX * centerX;
            d1 = d1 + dx - dy + centerY * centerY;
        }
    }

    var d2 = centerY * centerY * ((x + 0.5) * (x + 0.5)) + centerX * centerX * ((y - 1) * (y - 1)) - centerX * centerX * centerY * centerY;

    while (y >= 0)
    {
        SetGlyph(new NexusCoord(x + radiusX, y + radiusY), glyph);
        SetGlyph(new NexusCoord(-x + radiusX, y + radiusY), glyph);
        SetGlyph(new NexusCoord(x + radiusX, -y + radiusY), glyph);
        SetGlyph(new NexusCoord(-x + radiusX, -y + radiusY), glyph);

        if (d2 > 0)
        {
            y--;
            dy -= 2 * centerX * centerX;
            d2 = d2 + centerX * centerX - dy;
        }
        else
        {
            y--;
            x++;
            dx += 2 * centerY * centerY;
            dy -= 2 * centerX * centerX;
            d2 = d2 + dx - dy + centerX * centerX;
        }
    }
}

当我在控制台Graphic.DrawShape(NexusShape.Ellipse, new NexusCoord(10, 10), new NexusCoord(45, 35)));中调用该代码来绘制它时，它看起来像这样:

粉色矩形是应该填充的空间.

我try 使用双倍和舍入，但也不起作用.