プログラマ専用SNS ミクプラ

コード:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace clock
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //ペン定義
        Pen sec = new Pen(Color.Black, 2); 　　　//秒針ペン
        Pen W = new Pen(Color.White, 2);　　　　 //消去ペン


        //変数定義
        double sK, sX, sY;　　　　//秒針角度

        int bX, bY, bX0, bY0;　　//秒針座標

        int br = 95; 　　//秒針の長さ


        private void timer1_Tick(object sender, EventArgs e)
        {
            //描画定義
            Graphics g = pictureBox1.CreateGraphics();

            //現在の時間
            DateTime T = DateTime.Now;
            label1.Text = T.ToString("T");

            //秒針の消去
            g.DrawLine(W, 125, 125, bX0, 250 - bY0);

            //秒針
            sK = T.Second * 6 * 0.01745 - 1.57;　　　//秒針の角度計算
            sX = Math.Cos(sK) * br;　　　　　　　　　　　//終点のＸ座標
            sY = Math.Sin(sK) * br; 　　　　　　　　　　　//始点のＹ座標

            bX = (int)sX; bY = (int)sY;　　　　　　　　　　//int型に変換

            bX = 125 + bX; bY = 125 - bY;　　　　　 //中心からの終点座標

            bX0 = bX; bY0 = bY;　　　　　　　　　　　　　　//消去変数

            g.DrawLine(sec, 125, 125, bX, 250 - bY);　//秒針描画
        }
    }
}

コード:

  protected virtual void DrawNeedle(Graphics g)
    {
        PointF ptCenter = GetGuageCenter();
        float sizeGuage = GetGuageSize();
        float radius = sizeGuage / 2 - 16;

        double value = ( this.EndAngle - this.StartAngle ) /
                       ( this.MaxValue - this.MinValue ) *
                       ( this.CurrentValue - this.MinValue ) +
                       this.StartAngle;

        using( GraphicsPath path1 = new GraphicsPath() )
        using( GraphicsPath path2 = new GraphicsPath() )
        {
            PointF pt1 = new PointF( (float)( ptCenter.X + radius * Math.Cos( CalcRadian( value ) ) ),
                                     (float)( ptCenter.Y + radius * Math.Sin( CalcRadian( value ) ) ) );
            PointF pt2 = new PointF( (float)( ptCenter.X + 3 * Math.Cos( CalcRadian( value - 90 ) ) ),
                                     (float)( ptCenter.Y + 3 * Math.Sin( CalcRadian( value - 90 ) ) ) );
            PointF pt3 = new PointF( (float)( ptCenter.X + 3 * Math.Cos( CalcRadian( value + 90 ) ) ),
                                     (float)( ptCenter.Y + 3 * Math.Sin( CalcRadian( value + 90 ) ) ) );

            path1.AddLine( ptCenter, pt1 );
            path1.AddLine( pt1, pt2 );
            path1.CloseFigure();

            path2.AddLine( ptCenter, pt1 );
            path2.AddLine( pt1, pt3 );
            path2.CloseFigure();

            using( SolidBrush br1 = new SolidBrush( ColorUtil.BlendColor( this.NeedleColor, Color.Black, 0.1 ) ) )
            using( SolidBrush br2 = new SolidBrush( this.NeedleColor ) )
            using( Pen pen1 = new Pen( ColorUtil.BlendColor( this.NeedleColor, Color.Black, 0.1 ) ) )
            using( Pen pen2 = new Pen( this.NeedleColor ) )
            {
                g.FillPath( br2, path2 );
                g.DrawPath( pen2, path2 );

                g.FillPath( br1, path1 );
                g.DrawPath( pen1, path1 );
            }
        }

        RectangleF rcCenter = new RectangleF( ptCenter.X - 8, ptCenter.Y - 8, 16, 16 );
        using( LinearGradientBrush br = new LinearGradientBrush( rcCenter, this.NeedleColor, ColorUtil.BlendColor( this.NeedleColor, Color.Black, 0.5 ), 45 ) )
        {
            g.FillEllipse( br, rcCenter );
        }
    }