/// <summary>
/// This method is responsible for converting a string of text into
/// TextureData. This is done by converting each character in the string
/// into an id that maps to the sprites stored in the FontChip. The ids
/// are based on ASCII values. The font class starts at ASCII
/// <paramref name="value" /> for an empty space and will scale up from
/// there based on how many sprites are in the FontChip. By default it
/// supports up to ASCII 128 but can support more as long as the sprites
/// exist.
/// </summary>
/// <param name="value">
/// The string to be converted into pixel data.
/// </param>
/// <param name="spriteChip"></param>
/// <param name="fontMap"></param>
/// <param name="textureData">
/// A reference to a <see cref="TextureData" /> class to store the pixel
/// data in.
/// </param>
/// <param name="stripEmptyLines">
/// Ignore empty lines in the supplied text. By default this is set to
/// false.
/// </param>
/// <param name="letterSpacing"></param>
/// <param name="offset"></param>
public void GenerateTextData(string value, SpriteChip spriteChip, int[] fontMap, TextureData textureData, bool stripEmptyLines = false, int letterSpacing = 0, int offset = 0)
{
// Strip out any tabs
value = value.Replace("\t", " ");
var result = value.Split(new[] { "\n", "\r\n" },
stripEmptyLines ? StringSplitOptions.RemoveEmptyEntries : StringSplitOptions.None);
Array.Reverse(result);
var totalLines = result.Length;
//spriteChip = this;
var cWidth = spriteChip.width;
var cHeight = spriteChip.height;
// index text
var tWidth = 0;
var tHeight = totalLines;
for (var i = 0; i < totalLines; i++)
{
tWidth = Math.Max(tWidth, result[i].Length);
}
var realWidth = (cWidth + letterSpacing) * tWidth;
var realHeight = cHeight * tHeight;
if (textureData.width != realWidth || textureData.height != realHeight)
{
textureData.Resize(realWidth, realHeight);
}
textureData.Clear();
// convert each line into a sprite id
var charOffset = 32;
var tmpData = new int[spriteChip.width * spriteChip.height];
for (var i = 0; i < totalLines; i++)
{
var line = result[i];
var characters = line.Length;
for (var j = 0; j < characters; j++)
{
var character = line[j];
var spriteID = Convert.ToInt32(character) - charOffset;
//Debug.Log("Char " + character + " " + spriteID);
spriteChip.ReadSpriteAt(fontMap[spriteID], tmpData);
textureData.MergePixels(j * (cWidth + letterSpacing), i * cHeight, cWidth, cHeight, tmpData);
}
}
}
/// <summary>
/// Use this method to get the raw pixel data of the font text that is generated.
/// </summary>
/// <param name="value"></param>
/// <param name="spriteChip"></param>
/// <param name="fontName"></param>
/// <param name="pixels"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="letterSpacing"></param>
public void ConvertTextToPixelData(string value, SpriteChip spriteChip, string fontName, ref int[] pixels, out int width, out int height, int letterSpacing = 0)
{
if (fontName == "Default")
{
fontName = fonts.Keys.First();
}
var fontMap = fonts[fontName];
GenerateTextData(value, spriteChip, fontMap, tmpTextureData, false, letterSpacing);
tmpTextureData.CopyPixels(ref pixels);
width = tmpTextureData.width;
height = tmpTextureData.height;
}