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);
}
private LPixmap PackImage()
{
CheckPacked();
if (packing)
{
if (temps.IsEmpty())
{
throw new Exception("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;
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);
continue;
}
}
fitAll = true;
}
LPixmap image = new LPixmap(size.x, size.y, useAlpha);
for (int i = 0; i < temps.Size(); i++)
{
PackEntry entry = (PackEntry)temps.Get(i);
image.DrawPixmap(entry.image, entry.bounds.left, entry.bounds.top);
}
packing = false;
return(image);
}
return(null);
}
