public static bool DrawTexture(TContext tr, TexCod texture)
{
tr.Texture = texture;
ComputeTileRange(tr);
// calculate tile statrting address
tr.TileAdrs.X = texture.LLx / tr.TileWidth;
tr.TileAdrs.Y = texture.LLy / tr.TileHeight;
if (TileDraw(tr))
{
return((bool)true);
}
return(false);
}
public static TileCod CalOverlap(TileCod tile, TexCod texture)
{
TileCod Overlap = new TileCod();
if (texture.LLx <= tile.X && tile.X <= texture.TRx && texture.LLy <= tile.Y && tile.Y <= texture.TRy) //in X and Y
{
Overlap = tile;
return(Overlap);
}
else if (texture.LLx <= tile.X && tile.X <= texture.TRx) // only X
{
Overlap.X = tile.X;
if (tile.Y <= texture.LLy)
{
Overlap.Y = texture.LLy;
}
else if (tile.Y >= texture.TRy)
{
Overlap.Y = texture.TRy;
}
return(Overlap);
}
else if (texture.LLy <= tile.Y && tile.Y <= texture.TRy)// only in Y
{
if (tile.X <= texture.LLx)
{
Overlap.X = texture.LLx;
}
else if (tile.X >= texture.TRx)
{
Overlap.X = texture.TRx;
}
Overlap.Y = tile.Y;
return(Overlap);
}
else
{
if (tile.X <= texture.LLx && tile.Y <= texture.LLy)
{
Overlap.X = texture.LLx; Overlap.Y = texture.LLy;
} // nor
else if (tile.X >= texture.TRx && tile.Y >= texture.TRy)
{
Overlap.X = texture.TRx; Overlap.Y = texture.TRy;
}
return(Overlap);
}
}