public Sprite2DBatch( GraphicsContext graphics, int maxSpriteCount )
{
int maxVertexCount = maxSpriteCount * 4 ;
int maxIndexCount = maxSpriteCount * 6 ;
graphicsContext = graphics ;
#if !RESIZE_VERTEX_BUFFER
vertexBuffer = new VertexBuffer( maxVertexCount, maxIndexCount, vertexFormats ) ;
spriteCapacity = maxSpriteCount ;
#endif // RESIZE_VERTEX_BUFFER
vertexData = new Vertex[ maxVertexCount ] ;
indexData = new ushort[ maxIndexCount ] ;
spriteList = new Sprite2D[ maxSpriteCount ] ;
sortedList = new Sprite2D[ maxSpriteCount ] ;
#if ENABLE_SIN_TABLE
if ( sinTable == null ) {
sinTable = new float[ 4096 ] ;
for ( int i = 0 ; i < 4096 ; i ++ ) {
sinTable[ i ] = FMath.Sin( i * ( FMath.PI / 2048.0f ) ) ;
}
}
#endif // ENABLE_SIN_TABLE
}
public Sprite2DBatch(GraphicsContext graphics, int maxSpriteCount)
{
int maxVertexCount = maxSpriteCount * 4;
int maxIndexCount = maxSpriteCount * 6;
graphicsContext = graphics;
#if !RESIZE_VERTEX_BUFFER
vertexBuffer = new VertexBuffer(maxVertexCount, maxIndexCount, vertexFormats);
spriteCapacity = maxSpriteCount;
#endif // RESIZE_VERTEX_BUFFER
vertexData = new Vertex[maxVertexCount];
indexData = new ushort[maxIndexCount];
spriteList = new Sprite2D[maxSpriteCount];
sortedList = new Sprite2D[maxSpriteCount];
#if ENABLE_SIN_TABLE
if (sinTable == null)
{
sinTable = new float[4096];
for (int i = 0; i < 4096; i++)
{
sinTable[i] = FMath.Sin(i * (FMath.PI / 2048.0f));
}
}
#endif // ENABLE_SIN_TABLE
}
internal void AddToSortedList(Sprite2D sprite)
{
int index = FindSortedList(sprite);
if (index >= 0 && sortedList[index].sortKey == sprite.sortKey)
{
var head = sortedList[index];
var tail = head.sortPrev;
head.sortPrev = sprite;
tail.sortNext = sprite;
sprite.sortPrev = tail;
sprite.sortNext = head;
}
else
{
int count = (sortedCount++) - (++index);
if (count > 0)
{
Array.Copy(sortedList, index, sortedList, index + 1, count);
}
sortedList[index] = sprite;
sprite.sortPrev = sprite;
sprite.sortNext = sprite;
}
sprite.indexID = -1;
needUpdateIndexData = true;
}
// Subroutines
internal void AddToSpriteList(Sprite2D sprite)
{
sprite.spriteID = spriteCount;
sprite.vertexID = vertexCount;
spriteList[spriteCount++] = sprite;
needUpdateVertexData = true;
}
public void AddSprite( Sprite2D sprite )
{
AddToSpriteList( sprite ) ;
AddToSortedList( sprite ) ;
sprite.batch = this ;
vertexCount += 4 ;
indexCount += 6 ;
}
public void RemoveSprite( Sprite2D sprite )
{
RemoveFromSpriteList( sprite ) ;
RemoveFromSortedList( sprite ) ;
sprite.batch = null ;
vertexCount -= 4 ;
indexCount -= 6 ;
}
public void AddSprite(Sprite2D sprite)
{
AddToSpriteList(sprite);
AddToSortedList(sprite);
sprite.batch = this;
vertexCount += 4;
indexCount += 6;
}
public void RemoveSprite(Sprite2D sprite)
{
RemoveFromSpriteList(sprite);
RemoveFromSortedList(sprite);
sprite.batch = null;
vertexCount -= 4;
indexCount -= 6;
}
public void InitSprite(Sprite2D s)
{
s.Position.X = -100;
s.Position.Y = -100;
s.Direction = 0;
s.Size = new Vector2(spriteSize, spriteSize);
s.Center = new Vector2(0.5f, 0.5f);
s.UVOffset = new Vector2(1, 1) * 0.25f;
s.UVSize = new Vector2(0.25f, 0.25f);
s.Color = new Rgba(255, 255, 255, 255);
s.UpdateAll();
}
internal void UpdateIndexData()
{
if (!needUpdateIndexData)
{
return;
}
needUpdateIndexData = false;
int indexID = 0;
Sprite2DMaterial material = null;
Sprite2D draw = null;
drawList = null;
drawCount = 0;
for (int i = 0; i < sortedCount; i++)
{
var head = sortedList[i];
var sprite = head;
if (material != sprite.Material)
{
material = sprite.Material;
if (draw == null)
{
drawList = sprite;
}
if (draw != null)
{
draw.drawNext = sprite;
}
sprite.drawNext = null;
draw = sprite;
drawCount++;
}
do
{
if (sprite.indexID != indexID)
{
sprite.indexID = indexID;
indexData[indexID + 0] = (ushort)(sprite.vertexID + 0);
indexData[indexID + 1] = (ushort)(sprite.vertexID + 1);
indexData[indexID + 2] = (ushort)(sprite.vertexID + 2);
indexData[indexID + 3] = (ushort)(sprite.vertexID + 2);
indexData[indexID + 4] = (ushort)(sprite.vertexID + 1);
indexData[indexID + 5] = (ushort)(sprite.vertexID + 3);
}
indexID += 6;
sprite = sprite.sortNext;
} while (sprite != head);
}
vertexBuffer.SetIndices(indexData, 0, 0, indexCount);
}
internal void RemoveFromSpriteList(Sprite2D sprite)
{
var tail = spriteList[--spriteCount];
if (sprite != tail)
{
spriteList[sprite.spriteID] = tail;
for (int i = 0; i < 4; i++)
{
vertexData[sprite.vertexID + i] = vertexData[tail.vertexID + i];
}
tail.spriteID = sprite.spriteID;
tail.vertexID = sprite.vertexID;
}
needUpdateVertexData = true;
}
internal int FindSortedList(Sprite2D sprite)
{
int lower = -1;
int upper = sortedCount;
while (lower + 1 < upper)
{
int middle = (lower + upper) / 2;
if (sortedList[middle].sortKey > sprite.sortKey)
{
upper = middle;
}
else
{
lower = middle;
}
}
return(lower);
}
public void SetSpriteCount(int count)
{
count = Math.Min(Math.Max(count, 1), sprites.Length);
if (count > spriteCount)
{
for (int i = spriteCount; i < count; i++)
{
sprites[i] = new Sprite2D(batch, material, 0);
InitSprite(sprites[i]);
}
}
else
{
for (int i = count; i < spriteCount; i++)
{
batch.RemoveSprite(sprites[i]);
}
}
spriteCount = count;
}
internal void RemoveFromSortedList(Sprite2D sprite)
{
int index = FindSortedList(sprite);
if (sortedList[index] == sprite)
{
sortedList[index] = sprite.sortNext;
if (sprite.sortNext == sprite)
{
int count = (--sortedCount) - index;
if (count > 0)
{
Array.Copy(sortedList, index + 1, sortedList, index, count);
}
}
}
sprite.sortPrev.sortNext = sprite.sortNext;
sprite.sortNext.sortPrev = sprite.sortPrev;
needUpdateIndexData = true;
}
public void InitSprite( Sprite2D s )
{
s.Position.X = -100 ;
s.Position.Y = -100 ;
s.Direction = 0;
s.Size = new Vector2( spriteSize, spriteSize ) ;
s.Center = new Vector2( 0.5f, 0.5f ) ;
s.UVOffset = new Vector2( 1, 1 ) * 0.25f ;
s.UVSize = new Vector2( 0.25f, 0.25f ) ;
s.Color = new Rgba( 255, 255, 255, 255 ) ;
s.UpdateAll() ;
}
internal int FindSortedList( Sprite2D sprite )
{
int lower = -1 ;
int upper = sortedCount ;
while ( lower + 1 < upper ) {
int middle = ( lower + upper ) / 2 ;
if ( sortedList[ middle ].sortKey > sprite.sortKey ) {
upper = middle ;
} else {
lower = middle ;
}
}
return lower ;
}
internal void RemoveFromSortedList( Sprite2D sprite )
{
int index = FindSortedList( sprite ) ;
if ( sortedList[ index ] == sprite ) {
sortedList[ index ] = sprite.sortNext ;
if ( sprite.sortNext == sprite ) {
int count = ( -- sortedCount ) - index ;
if ( count > 0 ) Array.Copy( sortedList, index + 1, sortedList, index, count ) ;
}
}
sprite.sortPrev.sortNext = sprite.sortNext ;
sprite.sortNext.sortPrev = sprite.sortPrev ;
needUpdateIndexData = true ;
}
internal void AddToSortedList( Sprite2D sprite )
{
int index = FindSortedList( sprite ) ;
if ( index >= 0 && sortedList[ index ].sortKey == sprite.sortKey ) {
var head = sortedList[ index ] ;
var tail = head.sortPrev ;
head.sortPrev = sprite ;
tail.sortNext = sprite ;
sprite.sortPrev = tail ;
sprite.sortNext = head ;
} else {
int count = ( sortedCount ++ ) - ( ++ index ) ;
if ( count > 0 ) Array.Copy( sortedList, index, sortedList, index + 1, count ) ;
sortedList[ index ] = sprite ;
sprite.sortPrev = sprite ;
sprite.sortNext = sprite ;
}
sprite.indexID = -1 ;
needUpdateIndexData = true ;
}
internal void RemoveFromSpriteList( Sprite2D sprite )
{
var tail = spriteList[ -- spriteCount ] ;
if ( sprite != tail ) {
spriteList[ sprite.spriteID ] = tail ;
for ( int i = 0 ; i < 4 ; i ++ ) {
vertexData[ sprite.vertexID + i ] = vertexData[ tail.vertexID + i ] ;
}
tail.spriteID = sprite.spriteID ;
tail.vertexID = sprite.vertexID ;
}
needUpdateVertexData = true ;
}
// Subroutines
internal void AddToSpriteList( Sprite2D sprite )
{
sprite.spriteID = spriteCount ;
sprite.vertexID = vertexCount ;
spriteList[ spriteCount ++ ] = sprite ;
needUpdateVertexData = true ;
}
public void SetSpriteCount( int count )
{
count = Math.Min( Math.Max( count, 1 ), sprites.Length ) ;
if ( count > spriteCount ) {
for ( int i = spriteCount ; i < count ; i ++ ) {
sprites[ i ] = new Sprite2D( batch, material, 0 ) ;
InitSprite( sprites[ i ] ) ;
}
} else {
for ( int i = count ; i < spriteCount ; i ++ ) {
batch.RemoveSprite( sprites[ i ] ) ;
}
}
spriteCount = count ;
}