/// <summary>
/// Create a pre-rotated sprite sheet from a simple sprite.
/// This can make a huge difference in graphical performance!
/// </summary>
/// <param name="graphic">The image you want to rotate and stamp.</param>
/// <param name="rotations">The number of rotation frames the final sprite should have. For small sprites this can be quite a large number (360 even) without any problems.</param>
/// <param name="frame">If the Graphic has a single row of square animation frames on it, you can specify which of the frames you want to use here. Default is -1, or "use whole graphic."</param>
/// <param name="antiAliasing">Whether to use high quality rotations when creating the graphic. Default is false.</param>
/// <param name="autoBuffer">Whether to automatically increase the image size to accomodate rotated corners. Default is false. Will create frames that are 150% larger on each axis than the original frame or graphic.</param>
/// <returns></returns>
public FlxSprite loadRotatedGraphic(string graphicFile, uint rotations = 16, int frame = 1, bool antiAliasing = false, bool autoBuffer = false)
{
Texture2D graphic = FlxS.ContentManager.Load <Texture2D> (graphicFile);
_bakedRotation = 0;
_pixels = FlxG.addBitmap(graphic);
if (Frame >= 0)
{
Width = FrameWidth = _pixels.Height; // GetRegionHeight();
int rx = (int)(Frame * Width);
int ry = 0;
int fw = _pixels.Width; //getRegionWidth();
if (rx >= fw)
{
ry = (int)((rx / fw) * Width);
rx %= fw;
}
//_pixels.setRegion (rx + _pixels.getRegionX (), ry + _pixels.getRegionY (), (int)Width, (int)Width);
}
else
{
Width = FrameWidth = _pixels.Width; //.getRegionWidth();
}
Height = FrameHeight = _pixels.Height; //getRegionHeight();
resetHelpers();
return(this);
//Create the brush and canvas
/*
* int rows = Math.sqrt(Rotations);
* BitmapData brush = FlxG.addBitmap(Graphic);
* if(Frame >= 0)
* {
* //Using just a segment of the graphic - find the right bit here
* BitmapData full = brush;
* brush = new BitmapData(full.Height,full.Height);
* uint rx = Frame*brush.Width;
* uint ry = 0;
* uint fw = full.Width;
* if(rx >= fw)
* {
* ry = (uint)(rx/fw)*brush.Height;
* rx %= fw;
* }
* _flashRect.X = rx;
* _flashRect.Y = ry;
* _flashRect.Width = brush.Width;
* _flashRect.Height = brush.Height;
* brush.copyPixels(full,_flashRect,_flashPointZero);
* }
*
* uint max = brush.Width;
* if(brush.Height > max)
* max = brush.Height;
* if(AutoBuffer)
* max *= 1.5;
* uint columns = FlxU.ceil(Rotations/rows);
* Width = max*columns;
* Height = max*rows;
* string key = String(graphic) + ":" + Frame + ":" + Width + "x" + Height;
* bool skipGen = FlxG.checkBitmapCache(key);
* _pixels = FlxG.createBitmap(Width, Height, 0, true, key);
* Width = FrameWidth = _pixels.Width;
* Height = FrameHeight = _pixels.Height;
* _bakedRotation = 360/Rotations;
*
* //Generate a new sheet if necessary, then fix up the width and height
* if(!skipGen)
* {
* int row = 0;
* int column;
* int bakedAngle = 0;
* int halfBrushWidth = brush.Width*0.5;
* int halfBrushHeight = brush.Height*0.5;
* int midpointX = max*0.5;
* int midpointY = max*0.5;
* while(row < rows)
* {
* column = 0;
* while(column < columns)
* {
* _matrix.identity();
* _matrix.translate(-halfBrushWidth,-halfBrushHeight);
* _matrix.rotate(bakedAngle*0.017453293);
* _matrix.translate(max*column+midpointX, midpointY);
* bakedAngle += _bakedRotation;
* _pixels.draw(brush,_matrix,null,null,null,AntiAliasing);
* column++;
* }
* midpointY += max;
* row++;
* }
* }
* FrameWidth = FrameHeight = Width = Height = max;
* resetHelpers();
* if(AutoBuffer)
* {
* Width = brush.Width;
* Height = brush.Height;
* centerOffsets();
* }
* return this;
*/
}
