找到镂空图片的坐标
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace BuildLogoImageCoord { public partial class FormMain : Form { public FormMain() { InitializeComponent(); } private void btnText_Click( object sender, EventArgs e) { FindCoords(BuildTextImage(txtText.Text), txtText.Text); MessageBox.Show( "Done!" ); } const int ImgWidth = 1920; const int ImgHeight = 1200; static Bitmap BuildTextImage( string text) { Bitmap bitmap = new Bitmap(ImgWidth, ImgHeight); Graphics g = Graphics.FromImage(bitmap); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit; g.FillRectangle( new SolidBrush(Color.White), 0, 0, bitmap.Width, bitmap.Height); using (Font font1 = new Font( "Arial" , 1200, FontStyle.Bold, GraphicsUnit.Pixel)) { Rectangle rect1 = new Rectangle(0, 100, ImgWidth, ImgHeight); StringFormat stringFormat = new StringFormat(); stringFormat.Alignment = StringAlignment.Center; stringFormat.LineAlignment = StringAlignment.Center; g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit; Font goodFont = FindGoodFont(g, text, rect1.Size, font1, GraphicsUnit.Pixel); g.DrawString(text, goodFont, Brushes.Black, rect1, stringFormat); } g.Dispose(); bitmap.Save(text + ".jpg" , ImageFormat.Jpeg); return bitmap; } private static Font FindGoodFont(Graphics Graf, string sStringToFit, Size TextRoomAvail, Font FontToUse, GraphicsUnit FontUnit) { // Find out what the current size of the string in this font is SizeF RealSize = Graf.MeasureString(sStringToFit, FontToUse); if ((RealSize.Width <= TextRoomAvail.Width) && (RealSize.Height <= TextRoomAvail.Height)) { // The current font is fine... return FontToUse; } // Either width or height is too big... // Usually either the height ratio or the width ratio // will be less than 1. Work them out... float HeightScaleRatio = TextRoomAvail.Height / RealSize.Height; float WidthScaleRatio = TextRoomAvail.Width / RealSize.Width; // We'll scale the font by the one which is furthest out of range... float ScaleRatio = (HeightScaleRatio < WidthScaleRatio) ? ScaleRatio = HeightScaleRatio : ScaleRatio = WidthScaleRatio; float ScaleFontSize = FontToUse.Size * ScaleRatio; // Retain whatever the style was in the old font... FontStyle OldFontStyle = FontToUse.Style; // Get rid of the old non working font... FontToUse.Dispose(); // Tell the caller to use this newer smaller font. FontToUse = new Font(FontToUse.FontFamily, ScaleFontSize, OldFontStyle, FontUnit); return FontToUse; } private const int StartSize = 30; static void FindCoords(Bitmap bitmap, string text) { Bitmap reff = new Bitmap(ImgWidth, ImgHeight); Graphics g = Graphics.FromImage(reff); g.DrawImage(Image.FromFile( "bgImage.jpg" ), new Rectangle(0, 0, ImgWidth, ImgHeight)); var rows = ImgHeight/StartSize; var cols = ImgWidth/StartSize; var coords = new List< string >(); for ( int j = 0; j < rows; j++) { for ( int i = 0; i < cols; i++) { var total = StartSize*StartSize; var cur = 0; for ( int ii = 0; ii < StartSize; ii++) { for ( int jj = 0; jj < StartSize; jj++) { var posx = i*StartSize + ii; var posy = j*StartSize + jj; byte color = bitmap.GetPixel(posx, posy).R; if (color == 0) { cur++; reff.SetPixel(posx, posy, Color.Transparent); } } } if (cur > total * 0.02) { coords.Add( "[" + i + "," + j + "]" ); } } } StreamWriter sw = new StreamWriter(text + ".txt" ); sw.Write( "[" + string .Join( "," , coords.ToArray()) + "]" ); sw.Close(); g.Dispose(); reff.Save(text + "_cover.png" , ImageFormat.Png); } } } |
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