大家?guī)蛶兔珻#圖形設(shè)計(jì)的

2019-11-17 04:05:37

字體：大中小

供稿：網(wǎng)友

public override void Draw(System.Drawing.Graphics g)
        {
            float delta = (float)Math.PI / 12;
            PointF[] inPoints = new PointF[24];
            PointF[] outPoints = new PointF[24];
            float outA = Rectangle.Width / 2;
            float outB = Rectangle.Height / 2;
            float inA = Rectangle.Width * 3 / 8;
            float inB = Rectangle.Height * 3 / 8;

            float centerX = Rectangle.X + Rectangle.Width / 2;
            float centerY = Rectangle.Y + Rectangle.Height / 2;

            float inAngle = delta / 2;
            float outAngle = delta;
            for (int i = 0; i < 24; i++)
            {
                inPoints[i].X = centerX + inA * (float)Math.Cos(inAngle);
                inPoints[i].Y = centerY + inB * (float)Math.Sin(inAngle);

                outPoints[i].X = centerX + outA * (float)Math.Cos(outAngle);
                outPoints[i].Y = centerY + outB * (float)Math.Sin(outAngle);
                inAngle += delta;
                outAngle += delta;
            }
            for (int i = 0; i < 23; i++)
            {
                g.DrawLine(Pens.Black, inPoints[i], outPoints[i]);
                g.DrawLine(Pens.Black, outPoints[i], inPoints[i + 1]);
            }
            g.DrawLine(Pens.Black, inPoints[23], outPoints[23]);
            g.DrawLine(Pens.Black, outPoints[23], inPoints[0]);
        }

效果是畫(huà)出24角型
請(qǐng)問(wèn)，這些語(yǔ)句是什么意思啊？看不懂啊
            float delta = (float)Math.PI / 12;

要產(chǎn)生的圖形就是Word文檔中自定義圖形中的24角星，然后這邊用PI除以12有什么用意，超級(jí)不明白啊；而且如果把12變成8，然后改相應(yīng)的數(shù)組個(gè)數(shù)，就可以產(chǎn)生16角星，所以不明白變量delta在這里的作用？？？？？？

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