private LImage PackImage()
{
CheckPacked();
if (packing)
{
if (temps.IsEmpty())
{
throw new InvalidOperationException("Nothing to Pack !");
}
int maxWidth = 0;
int maxHeight = 0;
int totalArea = 0;
for (int i = 0; i < temps.Size(); i++)
{
PackEntry entry = (PackEntry)temps.Get(i);
int width = entry.image.GetWidth();
int height = entry.image.GetHeight();
if (width > maxWidth)
{
maxWidth = width;
}
if (height > maxHeight)
{
maxHeight = height;
}
totalArea += width * height;
}
Loon.Core.Geom.Point.Point2i size = new Loon.Core.Geom.Point.Point2i(CloseTwoPower(maxWidth),
CloseTwoPower(maxHeight));
bool fitAll = false;
loop : {
while (!fitAll)
{
int area = size.x * size.y;
if (area < totalArea)
{
NextSize(size);
continue;
}
Node root = new Node(size.x, size.y);
for (int i = 0; i < temps.Size(); i++)
{
PackEntry entry = (PackEntry)temps.Get(i);
Node inserted = root.Insert(entry);
if (inserted == null)
{
NextSize(size);
goto loop;
}
}
fitAll = true;
}
}
int srcWidth = size.x;
int srcHeight = size.y;
//由于LGraphics操作较耗时，此处直接处理像素（其实也快不了几毫秒，未来将改写为C#混合C/C++）
LImage image = LImage.CreateImage(srcWidth, srcHeight, useAlpha);
int[] dstPixels = image.GetIntPixels();
int[] srcPixels = null;
for (int i = 0; i < temps.Size(); i++)
{
PackEntry entry = (PackEntry)temps.Get(i);
LImage img = entry.image;
srcPixels = img.GetIntPixels();
int w = img.Width;
int h = img.Height;
int x = entry.bounds.left;
int y = entry.bounds.top;
if (x < 0)
{
w += x;
x = 0;
}
if (y < 0)
{
h += y;
y = 0;
}
if (x + w > srcWidth)
{
w = srcWidth - x;
}
if (y + h > srcHeight)
{
h = srcHeight - y;
}
if (img.hasAlpha)
{
int findIndex = y * srcWidth + x;
int drawIndex = 0;
int moveFind = srcWidth - w;
for (int col = 0; col < h; col++)
{
for (int row = 0; row < w;)
{
if (srcPixels[drawIndex] != 0)
{
dstPixels[findIndex] = srcPixels[drawIndex];
}
row++;
findIndex++;
drawIndex++;
}
findIndex += moveFind;
}
}
else
{
for (int count = 0; count < h; count++)
{
System.Array.Copy(srcPixels, count * w, dstPixels,
(y + count) * srcWidth + x, w);
}
}
}
image.SetIntPixels(dstPixels);
srcPixels = null;
dstPixels = null;
packing = false;
return(image);
}
return(null);
}
public virtual void SetField2DBackground(Field2D field, Dictionary <object, object> pathMap,
string fileName)
{
SetField2D(field);
LImage background = null;
if (fileName != null)
{
LImage tmp = LImage.CreateImage(fileName);
background = SetTileBackground(tmp, true);
if (tmp != null)
{
tmp.Dispose();
tmp = null;
}
}
else
{
background = LImage.CreateImage(GetWidth(), GetHeight(), false);
}
int srcWidth = GetWidth();
int srcHeight = GetHeight();
//在C#环境下LGraphics采取像素渲染，得不到硬件加速，此处直接将像素操作方法粘过来了(虽然也快不了几毫秒……)
int[] dstColors = background.GetIntPixels();
int[] srcColors = null;
for (int i = 0; i < field.GetWidth(); i++)
{
for (int j = 0; j < field.GetHeight(); j++)
{
int index = field.GetType(j, i);
object o = CollectionUtils.Get(pathMap, index);
if (o != null)
{
if (o is LImage)
{
LImage img = (LImage)o;
srcColors = img.GetIntPixels();
int w = img.Width;
int h = img.Height;
int y = field.TilesToHeightPixels(j);
int x = field.TilesToWidthPixels(i);
if (x < 0)
{
w += x;
x = 0;
}
if (y < 0)
{
h += y;
y = 0;
}
if (x + w > srcWidth)
{
w = srcWidth - x;
}
if (y + h > srcHeight)
{
h = srcHeight - y;
}
if (img.hasAlpha)
{
int findIndex = y * srcWidth + x;
int drawIndex = 0;
int moveFind = srcWidth - w;
for (int col = 0; col < h; col++)
{
for (int row = 0; row < w;)
{
if (srcColors[drawIndex] != 0)
{
dstColors[findIndex] = srcColors[drawIndex];
}
row++;
findIndex++;
drawIndex++;
}
findIndex += moveFind;
}
}
else
{
for (int size = 0; size < h; size++)
{
System.Array.Copy(srcColors, size * w, dstColors,
(y + size) * srcWidth + x, w);
}
}
}
else if (o is Actor)
{
AddObject(((Actor)o), field.TilesToWidthPixels(i),
field.TilesToHeightPixels(j));
}
}
}
}
background.SetIntPixels(dstColors);
background.SetFormat(Loon.Core.Graphics.Opengl.LTexture.Format.SPEED);
SetBackground(background.GetTexture());
srcColors = null;
dstColors = null;
if (background != null)
{
background.Dispose();
background = null;
}
}