For any point in a pixel, you can get his grayscale. Calculation formula of gray scale
| The code is as follows |
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GETR (color) * 0.299 + GETG (color) * 0.587 + GETB (color) * 0.114; |
And each text also has its corresponding light and shade, than the true heart of a ball, it will be more dark than the hollow, because it more closely, the way to find the text
| The code is as follows |
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Private Function Getdensity (t:string): number {
var Ttf:textfield = new TextField;
Ttf.autosize = Textfieldautosize.left;
Ttf.text = t;
var bmd:bitmapdata = new BitmapData (Ttf.width, Ttf.height, False, 0XFFFFFF);
Bmd.draw (TTF);
var c:int = 0;
for (var x:int = 0; x < bmd.width;x++) {
for (var y:int = 0; y < bmd.height;y++) {
if (Bmd.getpixel (x,y)!=0xffffff) {
C + +;
}
}
}
return c/ttf.width/ttf.height;
} |
Complete code
| The code is as follows |
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| Package
{
Import Flash.display.Bitmap;
Import Flash.display.BitmapData;
Import Flash.display.Loader;
Import Flash.display.Sprite;
Import flash.events.Event;
Import Flash.geom.Rectangle;
Import flash.net.FileReference;
Import Flash.text.TextField;
Import flash.text.TextFieldAutoSize;
Import Flash.text.TextFormat;
Import Sliz.miniui.Button;
Import Sliz.utils.UIUtils;
/**
* ...
* @author Lizhi
*/
public class Testtext extends Sprite
{
private var fonts:array = [];
private Var Tf:textfield;
private Var file:filereference;
private Var Loader:loader;
Public Function Testtext ()
{
tf = new TextField;
var tfm:textformat = new TextFormat;
Tfm.size = 10;
tfm.leading =-2;
Tf.defaulttextformat = TFM;
Tf.autosize = Textfieldautosize.left;
var text:string = "";
var min:int = 32;
var max:int = 120;
while (++min < max) {
var c:string = string.fromcharcode (min);
text + C;
}
Text + ". '" *#@%+-) (tii?><~ ";
for (var i:int = 0; i < text.length;i++) {
c = Text.charat (i);
Fonts.push ({d:getdensity (c), t:c});
}
Fonts.sorton ("D", array.numeric| array.descending);
[Embed (Source = ' 123.png ')]var Ic:class;
var bmd:bitmapdata = (new IC as Bitmap). BitmapData;
Render (BMD);
AddChild (TF);
Uiutils.changestage (stage);
var Explorer:button = New Button ("Explorer image", 2, this, browse);
Loader = new loader ();
Loader.contentLoaderInfo.addEventListener (Event.complete, onLoad2);
}
Private function Render (Bmd:bitmapdata): void {
Tf.width = 1000;
Tf.height = 1000;
var x:int = 0;
var y:int = 0;
Tf.text = "";
while (Y < bmd.height) {
while (X<bmd.width) {
var gray:number = Getgray (Bmd.getpixel (x, y))/0xFF;
var index:int = Int ((fonts.length-1) * gray);
Tf.appendtext (FONTS[INDEX].T);
var r:rectangle = tf.getcharboundaries (tf.text.length-1);
x + + r.width;
}
Tf.appendtext ("n");
y = R.bottom
x = 0;
}
}
Private Function Getdensity (t:string): number {
var Ttf:textfield = new TextField;
Ttf.autosize = Textfieldautosize.left;
Ttf.text = t;
var bmd:bitmapdata = new BitmapData (Ttf.width, Ttf.height, False, 0XFFFFFF);
Bmd.draw (TTF);
var c:int = 0;
for (var x:int = 0; x < bmd.width;x++) {
for (var y:int = 0; y < bmd.height;y++) {
if (Bmd.getpixel (x,y)!=0xffffff) {
C + +;
}
}
}
return c/ttf.width/ttf.height;
}
Private Function Getr (color:uint): UINT {
return color << 8 >>> 24;
}
Private Function Getg (color:uint): UINT {
return color << >>> 24;
}
Private Function Getb (color:uint): UINT {
return color << >>> 24;
}
Private Function Getgray (color:uint): UINT {
return GETR (color) * 0.299 + GETG (color) * 0.587 + GETB (color) * 0.114;
}
Private Function browse (e:event): void {
File = new Filereference ();
File.browse ();
File.addeventlistener (Event.select, onselect);
}
Private Function Onselect (e:event): void {
File.load ();
File.addeventlistener (Event.complete, onLoad);
}
Private Function OnLoad (e:event): void {
Loader.loadbytes (File.data);
}
Private Function OnLoad2 (e:event): void {
var content:bitmap = loader.contentLoaderInfo.content as Bitmap;
Render (Content.bitmapdata);
}
}
} |
