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public static BlitMask ( |
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| source | ||
| target | ||
| srcPx | int | |
| srcPy | int | |
| srcW | int | |
| srcH | int | |
| px | int | |
| py | int | |
| return | void | |
private static List <QBitmap> GenerateBitmapSheetsAndRepack(QFontGlyph[] sourceGlyphs, BitmapData[] sourceBitmaps, int destSheetWidth, int destSheetHeight, out QFontGlyph[] destGlyphs, int destMargin)
{
var pages = new List <QBitmap>();
destGlyphs = new QFontGlyph[sourceGlyphs.Length];
QBitmap currentPage = null;
int maxY = 0;
foreach (var glph in sourceGlyphs)
{
maxY = Math.Max(glph.rect.Height, maxY);
}
int finalPageIndex = 0;
int finalPageRequiredWidth = 0;
int finalPageRequiredHeight = 0;
for (int k = 0; k < 2; k++)
{
bool pre = k == 0; //first iteration is simply to determine the required size of the final page, so that we can crop it in advance
int xPos = 0;
int yPos = 0;
int maxYInRow = 0;
int totalTries = 0;
for (int i = 0; i < sourceGlyphs.Length; i++)
{
if (!pre && currentPage == null)
{
if (finalPageIndex == pages.Count)
{
int width = Math.Min(destSheetWidth, finalPageRequiredWidth);
int height = Math.Min(destSheetHeight, finalPageRequiredHeight);
currentPage = new QBitmap(new Bitmap(width, height, PixelFormat.Format32bppArgb));
currentPage.Clear32(255, 255, 255, 0); //clear to white, but totally transparent
}
else
{
currentPage = new QBitmap(new Bitmap(destSheetWidth, destSheetHeight, PixelFormat.Format32bppArgb));
currentPage.Clear32(255, 255, 255, 0); //clear to white, but totally transparent
}
pages.Add(currentPage);
}
totalTries++;
if (totalTries > 10 * sourceGlyphs.Length)
{
throw new Exception("Failed to fit font into texture pages");
}
var rect = sourceGlyphs[i].rect;
if (xPos + rect.Width + 2 * destMargin <= destSheetWidth && yPos + rect.Height + 2 * destMargin <= destSheetHeight)
{
if (!pre)
{
//add to page
if (sourceBitmaps[sourceGlyphs[i].page].PixelFormat == PixelFormat.Format32bppArgb)
{
QBitmap.Blit(sourceBitmaps[sourceGlyphs[i].page], currentPage.bitmapData, rect.X, rect.Y, rect.Width, rect.Height, xPos + destMargin, yPos + destMargin);
}
else
{
QBitmap.BlitMask(sourceBitmaps[sourceGlyphs[i].page], currentPage.bitmapData, rect.X, rect.Y, rect.Width, rect.Height, xPos + destMargin, yPos + destMargin);
}
destGlyphs[i] = new QFontGlyph(pages.Count - 1, new Rectangle(xPos + destMargin, yPos + destMargin, rect.Width, rect.Height), sourceGlyphs[i].yOffset, sourceGlyphs[i].character);
}
else
{
finalPageRequiredWidth = Math.Max(finalPageRequiredWidth, xPos + rect.Width + 2 * destMargin);
finalPageRequiredHeight = Math.Max(finalPageRequiredHeight, yPos + rect.Height + 2 * destMargin);
}
xPos += rect.Width + 2 * destMargin;
maxYInRow = Math.Max(maxYInRow, rect.Height);
continue;
}
if (xPos + rect.Width + 2 * destMargin > destSheetWidth)
{
i--;
yPos += maxYInRow + 2 * destMargin;
xPos = 0;
if (yPos + maxY + 2 * destMargin > destSheetHeight)
{
yPos = 0;
if (!pre)
{
currentPage = null;
}
else
{
finalPageRequiredWidth = 0;
finalPageRequiredHeight = 0;
finalPageIndex++;
}
}
continue;
}
}
}
return(pages);
}
/// <summary>
/// Generates the final bitmap sheet for the font
/// </summary>
/// <param name="sourceGlyphs">A collection of <see cref="QFontGlyph"/>s. These are written to the final bitmap</param>
/// <param name="sourceBitmaps"> The source bitmaps for the font (initial bitmap)</param>
/// <param name="destSheetWidth">The destination bitmap width</param>
/// <param name="destSheetHeight">The destination bitmap height</param>
/// <param name="destGlyphs">A collection of <see cref="QFontGlyph"/>s that are placed on the final bitmap sheet</param>
/// <param name="destMargin">The margin for the final bitmap sheet</param>
/// <returns>A collection of <see cref="QBitmap"/>s. These are the final bitmap sheets</returns>
private static List <QBitmap> GenerateBitmapSheetsAndRepack(QFontGlyph[] sourceGlyphs, BitmapData[] sourceBitmaps, int destSheetWidth, int destSheetHeight, out QFontGlyph[] destGlyphs, int destMargin)
{
var pages = new List <QBitmap>();
destGlyphs = new QFontGlyph[sourceGlyphs.Length];
QBitmap currentPage = null;
int maxY = 0;
foreach (var glph in sourceGlyphs)
{
maxY = Math.Max(glph.Rect.Height, maxY);
}
int finalPageIndex = 0;
int finalPageRequiredWidth = 0;
int finalPageRequiredHeight = 0;
// We loop through the whole process twice. The first time is to determine
// the size of the final page, so that we can crop it in advance
for (int k = 0; k < 2; k++)
{
// Whether this is the pre-processing step
bool pre = k == 0;
int xPos = 0;
int yPos = 0;
int maxYInRow = 0;
int totalTries = 0;
// Loop through all the glyphs
for (int i = 0; i < sourceGlyphs.Length; i++)
{
// If this is the second stage and we don't already have a bitmap page, create one
if (!pre && currentPage == null)
{
if (finalPageIndex == pages.Count)
{
int width = Math.Min(destSheetWidth, finalPageRequiredWidth);
int height = Math.Min(destSheetHeight, finalPageRequiredHeight);
currentPage = new QBitmap(new Bitmap(width, height, PixelFormat.Format32bppArgb));
currentPage.Clear32(255, 255, 255, 0); //clear to white, but totally transparent
}
else
{
currentPage = new QBitmap(new Bitmap(destSheetWidth, destSheetHeight, PixelFormat.Format32bppArgb));
currentPage.Clear32(255, 255, 255, 0); //clear to white, but totally transparent
}
pages.Add(currentPage);
}
// Keep track of the number of times we've tried to fit the font onto the texture page
totalTries++;
if (totalTries > 10 * sourceGlyphs.Length)
{
throw new Exception("Failed to fit font into texture pages");
}
var rect = sourceGlyphs[i].Rect;
// If we can fit the glyph onto the page, place it
if (xPos + rect.Width + 2 * destMargin <= destSheetWidth && yPos + rect.Height + 2 * destMargin <= destSheetHeight)
{
if (!pre)
{
// Add to page
if (sourceBitmaps[sourceGlyphs[i].Page].PixelFormat == PixelFormat.Format32bppArgb)
{
QBitmap.Blit(sourceBitmaps[sourceGlyphs[i].Page], currentPage.BitmapData, rect.X, rect.Y, rect.Width, rect.Height, xPos + destMargin, yPos + destMargin);
}
else
{
QBitmap.BlitMask(sourceBitmaps[sourceGlyphs[i].Page], currentPage.BitmapData, rect.X, rect.Y, rect.Width, rect.Height, xPos + destMargin, yPos + destMargin);
}
// Add to destination glyph collection
destGlyphs[i] = new QFontGlyph(pages.Count - 1, new Rectangle(xPos + destMargin, yPos + destMargin, rect.Width, rect.Height), sourceGlyphs[i].YOffset, sourceGlyphs[i].Character);
}
else
{
// Update the final dimensions
finalPageRequiredWidth = Math.Max(finalPageRequiredWidth, xPos + rect.Width + 2 * destMargin);
finalPageRequiredHeight = Math.Max(finalPageRequiredHeight, yPos + rect.Height + 2 * destMargin);
}
// Update the current x position
xPos += rect.Width + 2 * destMargin;
// Update the maximum row height so far
maxYInRow = Math.Max(maxYInRow, rect.Height);
continue;
}
// If we reach this, haven't been able to fit glyph onto row
// Move down one row and try again
if (xPos + rect.Width + 2 * destMargin > destSheetWidth)
{
// Retry the current glyph on the next row
i--;
// Change coordinates to next row
yPos += maxYInRow + 2 * destMargin;
xPos = 0;
// Is the next row off the bitmap sheet?
if (yPos + maxY + 2 * destMargin > destSheetHeight)
{
// Reset y position
yPos = 0;
if (!pre)
{
// If this is not the second stage, reset the currentPage
// This will create a new one on next loop
currentPage = null;
}
else
{
// If this is the pre-processing stage, update
// the finalPageIndex. Reset width and height
// since we clearly need one full page and extra
finalPageRequiredWidth = 0;
finalPageRequiredHeight = 0;
finalPageIndex++;
}
}
}
}
}
return(pages);
}
