示例#1
0
        /// <summary>
        /// ビットマップにベクトル図を描画します。
        /// </summary>
        /// <param name="bmp">描画先の System.Drawing.Bitmap</param>
        /// <param name="data">元となる 2 次元配列データ</param>
        /// <exception cref="Visualization.VectorDataNotFoundException">ベクトルデータがないときに投げられます。</exception>
        public override void DrawTo( Canvas canvas, IDataSheet data )
        {
            Bitmap bmp = canvas.Bitmap;
            if( !this.Setting.Show )
            {
                return;
            }
            if( !data.HasVectorData )
            {
                throw new VectorDataNotFoundException( "ベクトルデータがありません" );
            }
            if( !this.Setting.IsLengthFixed )
            {
                this.Setting.ReferredLength = data.MaxVector;
            }
            Graphics g = Graphics.FromImage( bmp );
            Pen p = new Pen( Setting.LineColor );
            Brush b = new SolidBrush( Setting.InnerColor );

            ArrowDrawer d = new ArrowDrawer( g, this.Setting, data.MaxVector, data.MinVector );

            int start = (this.Setting.Interval > 1) ? this.Setting.Offset : 0;
            int step = this.Setting.Interval;

            HashSet<int> iSet = new HashSet<int>();
            HashSet<int> jSet = new HashSet<int>();

            if( this.Setting.FixedBound )
            {
                iSet.Add( 0 );
                jSet.Add( 0 );
            }
            for( int i=start; i<data.Columns; i += step )
            {
                iSet.Add( i );
            }
            for( int j=start; j<data.Rows; j += step )
            {
                jSet.Add( j );
            }
            if( this.Setting.FixedBound )
            {
                iSet.Add( data.Columns-1 );
                jSet.Add( data.Rows-1 );
            }

            foreach( var i in iSet )
            {
                foreach( var j in jSet )
                {
                    Point pt = canvas.AsBitmapCoord( data.GetX( i ), data.GetY( j ) );
                    double u = data.GetU( i, j );
                    double v = data.GetV( i, j );
                    double len = Math.Sqrt( u*u + v*v );
                    d.DrawArrow( pt, u, v );
                }
            }
        }
示例#2
0
 private void pictureBoxPreview_Paint( object sender, PaintEventArgs e )
 {
     ArrowDrawer d = new ArrowDrawer( e.Graphics, this.previewSetting, 1.5, 0 );
     for( int i=0; i<4; i++ )
     {
         for( int j=0; j<2; j++ )
         {
             double len = 1.5 - 0.3*i - 0.3*j;
             double angle = Math.Atan2( 0.25, 1.0 );
             d.DrawArrow( new PointF( i*70F+20F, 80F-j*40F ), len*Math.Cos( angle ), len*Math.Sin( angle ) );
         }
     }
 }