#include "toonz/toonzimageutils.h"
#include "tstroke.h"
#include "tpalette.h"
#include "tofflinegl.h"
#include "tvectorrenderdata.h"
#include "tvectorgl.h"
#include "trop.h"
#include "toonz/ttileset.h"
#include "toonz/tcenterlinevectorizer.h"
#include "tregion.h"
#include "trasterimage.h"
#include "ttoonzimage.h"
#include "ttzpimagefx.h"
#include "tlevel_io.h"
#include "tsystem.h"
#include "tstream.h"
#include "tsimplecolorstyles.h"
//-------------------------------------------------------------------

namespace
{

const int BackgroundStyle = 0;

//-------------------------------------------------------------------

TRect rasterizeStroke(TOfflineGL *&gl, const TRect &rasBounds, TStroke *stroke,
					  TPalette *palette, const TRectD &clip, bool doAntialias)
{
	TRectD bbox = clip * stroke->getBBox();
	TRect rect = convert(bbox).enlarge(1) * rasBounds;

	if (rect.getLx() <= 0 || rect.getLy() <= 0)
		return TRect();

	gl = new TOfflineGL(rect.getSize());
	gl->makeCurrent();
	gl->clear(TPixel32::White);

	TPaletteP plt = palette->clone();
	int styleId = stroke->getStyle();
	TColorStyleP style = plt->getStyle(styleId);
	assert(style);
	style->setMainColor(TPixel32::Black);

	TTranslation affine(-convert(rect.getP00()));
	TVectorRenderData rd(affine, gl->getBounds(), plt.getPointer(), 0, false, doAntialias);
	tglDraw(rd, stroke);

	glFinish();

	return rect;
}

//-------------------------------------------------------------------

TRect rasterizeStroke(TOfflineGL *&gl, TRect rasBounds, TStroke *stroke, TRectD clip, bool filled = false)
{
	TDimension d = rasBounds.getSize();

	TPointD offset(d.lx * 0.5, d.ly * 0.5);
	TTranslation offsetMatrix(offset);

	TRectD strokeBBox = stroke->getBBox().enlarge(2);
	if (!clip.isEmpty())
		strokeBBox = offsetMatrix * (strokeBBox * clip);
	else
		strokeBBox = offsetMatrix * strokeBBox;

	TRect rect = ToonzImageUtils::convertWorldToRaster(strokeBBox, 0) * rasBounds;
	if (!rect.isEmpty()) {
		gl = new TOfflineGL(rect.getSize());
		gl->makeCurrent();
		glClearColor(1, 1, 1, 1);
		glClear(GL_COLOR_BUFFER_BIT);

		TPalette *palette = new TPalette();
		TTranslation affine(-strokeBBox.getP00() + offset);
		TVectorRenderData rd(affine, gl->getBounds(), palette, 0, false, true);

		int oldStyle = stroke->getStyle();
		stroke->setStyle(1);

		if (filled) {
			TVectorImage vi;
			vi.addStroke(new TStroke(*stroke));
			vi.findRegions();
			vi.selectFill(vi.getBBox().enlarge(2), 0, 1, false, true, false);
			tglDraw(rd, &vi);
		} else
			tglDraw(rd, stroke);

		delete palette;
		stroke->setStyle(oldStyle);
		glFinish();
	}
	return rect;
}

//-------------------------------------------------------------------

TRect rasterizeRegion(TOfflineGL *&gl, TRect rasBounds, TRegion *region, TRectD clip)
{
	TRectD regionBBox = region->getBBox();
	if (!clip.isEmpty())
		regionBBox = regionBBox * clip;

	TRect rect = convert(regionBBox) * rasBounds;
	if (!rect.isEmpty()) {
		gl = new TOfflineGL(rect.getSize());
		gl->makeCurrent();
		gl->clear(TPixel32::White);
		glPushAttrib(GL_ALL_ATTRIB_BITS);
		glEnable(GL_ALPHA_TEST);
		glAlphaFunc(GL_GREATER, 0);

		TPalette *palette = new TPalette();
		TTranslation affine(-convert(rect.getP00()));
		TVectorRenderData rd(affine, gl->getBounds(), palette, 0, true, true);

		int oldStyle = region->getStyle();
		region->setStyle(1);
		tglDraw(rd, region);

		glDisable(GL_ALPHA_TEST);
		glPopAttrib();

		region->setStyle(oldStyle);
		glFinish();
		delete palette;
	}
	return rect;
}

//-------------------------------------------------------------------

void fastAddPaintRegion(const TToonzImageP &ti, TRegion *region,
						int newPaintId, int maxStyleId, TRectD clip = TRectD())
{
	TRasterCM32P ras = ti->getRaster();
	TOfflineGL *gl;
	TRect rect = rasterizeRegion(gl, ras->getBounds(), region, clip);
	if (rect.isEmpty())
		return;

	TRaster32P glRas = gl->getRaster();
	assert(TPixelCM32::getMaxTone() == 255);
	ras->lock();
	glRas->lock();

	for (int y = rect.y0; y <= rect.y1; y++) {
		TPixel32 *inPix = glRas->pixels(y - rect.y0);
		TPixelCM32 *outPix = ras->pixels(y) + rect.x0;
		TPixel32 *inEndPix = inPix + rect.x1 - rect.x0 + 1;
		for (; inPix < inEndPix; ++outPix, ++inPix)
			if (inPix->r < 128) {
				outPix->setPaint(newPaintId);
				outPix->setTone(255);
			}
	}

	ras->unlock();
	glRas->unlock();

	delete gl;

	TRegion *subregion;
	UINT i = 0;
	for (; i < region->getSubregionCount(); ++i) {
		subregion = region->getSubregion(i);
		fastAddPaintRegion(ti, subregion, tmin(maxStyleId, subregion->getStyle()), maxStyleId);
	}
}
}

//-------------------------------------------------------------------

TRect ToonzImageUtils::convertWorldToRaster(const TRectD area, const TToonzImageP ti)
{
	if (area.isEmpty())
		return TRect();
	if (!ti || !ti->getRaster())
		return TRect(tfloor(area.x0), tfloor(area.y0), tfloor(area.x1) - 1, tfloor(area.y1) - 1);
	TRasterCM32P ras = ti->getRaster();
	TRectD rect(area + ras->getCenterD());
	return TRect(tfloor(rect.x0), tfloor(rect.y0), tceil(rect.x1) - 1, tceil(rect.y1) - 1);
}

//-------------------------------------------------------------------

TRectD ToonzImageUtils::convertRasterToWorld(const TRect area, const TToonzImageP ti)
{
	if (area.isEmpty())
		return TRectD();

	TRectD rect(area.x0, area.y0, area.x1 + 1, area.y1 + 1);
	if (ti && ti->getRaster())
		rect = rect - ti->getRaster()->getCenterD();
	return rect;
}

//-------------------------------------------------------------------

//clip in coordinate world (cioe' della stroke)

//overlaying inks, blend inks always "lose" on normal inks

TRect fastAddInkStroke(const TToonzImageP &ti, TStroke *stroke, int inkId, bool selective,
					   bool filled, TRectD clip, bool doAntialiasing = true, const set<int> &blendInks = set<int>())
{
	TRasterCM32P ras = ti->getRaster();
	TOfflineGL *gl = 0;

	TRect rectRender = rasterizeStroke(gl, ras->getBounds(), stroke, ti->getPalette(), clip, doAntialiasing);
	if (!gl)
		return TRect();

	TRaster32P glRas = gl->getRaster();
	TRasterCM32P outRas = ras->extract(rectRender);
	assert(glRas->getSize() == outRas->getSize());

	assert(TPixelCM32::getMaxTone() == 255);
	outRas->lock();
	glRas->lock();
	bool isBlendInkUp = (blendInks.find(inkId) != blendInks.end());
	for (int y = 0; y < outRas->getLy(); ++y) {
		TPixel32 *inPix = glRas->pixels(y);
		TPixelCM32 *outPix = outRas->pixels(y);
		for (int x = 0; x < outRas->getLx(); ++outPix, ++inPix, ++x) {
			int upTone = inPix->r;
			int dnTone = outPix->getTone();

			if (doAntialiasing) {
				//overlaying inks, blend inks always "lose" on normal inks

				bool isBlendInkDn = (blendInks.find(outPix->getInk()) != blendInks.end());

				if (isBlendInkUp && !isBlendInkDn && dnTone < 255)
					continue;

				if (isBlendInkDn && !isBlendInkUp && upTone < 255) {
					*outPix = TPixelCM32(inkId, outPix->getPaint(), upTone);
					continue;
				}

				//The upper pixel replaces the lower one, *if*
				//  a) It's more opaque
				//  b) If the ink id id not the same, ink is not completely transparent
				//  c)  ...
				if ((upTone <= dnTone) &&
					((outPix->getInk() == inkId) || (upTone != 255)) &&
					(!selective || !outPix->isPureInk()))
					*outPix = TPixelCM32(inkId, outPix->getPaint(), upTone);
			} else {
				if (!selective || !outPix->isPureInk()) {
					//if(upTone<=192 && upTone<=dnTone)
					if (upTone == 0)
						*outPix = TPixelCM32(inkId, outPix->getPaint(), 0);
				}
			}
		}
	}
	outRas->unlock();
	glRas->unlock();
	delete gl;

	return rectRender;
}

//clip in coordinate world (cioe' della stroke)
TRect ToonzImageUtils::addInkStroke(const TToonzImageP &ti, TStroke *stroke, int inkId, bool selective,
									bool filled, TRectD clip, bool doAntialiasing)
{
	TStroke *s = new TStroke(*stroke);
	TPoint tiCenter = ti->getRaster()->getCenter();
	s->transform(TTranslation(tiCenter.x, tiCenter.y));
	TRect rect = fastAddInkStroke(ti, s, inkId, selective, filled, clip, doAntialiasing);
	rect -= tiCenter;
	return rect;
}

//-------------------------------------------------------------------

TRect ToonzImageUtils::changeColorStroke(const TToonzImageP &ti, const ChangeColorStrokeSettings &settings)
{
	if (!settings.changeInk && !settings.changePaint)
		return TRect();

	TRasterCM32P ras = ti->getRaster();
	TOfflineGL *gl;
	TRect rect = rasterizeStroke(gl, ras->getBounds(), settings.stroke, settings.clip);
	if (rect.isEmpty()) {
		return rect;
	}
	TRaster32P glRas = gl->getRaster();
	ras->lock();
	glRas->lock();

	for (int y = rect.y0; y <= rect.y1; ++y) {
		TPixel32 *inPix = glRas->pixels(y - rect.y0);
		TPixelCM32 *outPix = ras->pixels(y) + rect.x0;
		TPixel32 *inEndPix = inPix + rect.x1 - rect.x0 + 1;
		for (; inPix < inEndPix; ++outPix, ++inPix) {
			if (inPix->r < 128 && settings.changeInk && !outPix->isPurePaint())
				outPix->setInk(settings.colorId);
			if (inPix->r < 128 && settings.changePaint &&
				(settings.maskPaintId == -1 || outPix->getPaint() == settings.maskPaintId))
				outPix->setPaint(settings.colorId);
		}
	}
	delete gl;
	ras->unlock();
	glRas->unlock();
	return rect;
}

//-------------------------------------------------------------------

TRect ToonzImageUtils::eraseRect(const TToonzImageP &ti, const TRectD &area, int maskId, bool onInk, bool onPaint)
{
	assert(onInk || onPaint);
	TRasterCM32P ras = ti->getRaster();
	TRect rect = convertWorldToRaster(area, ti) * ras->getBounds();
	if (rect.isEmpty())
		return rect;
	ras->lock();

	for (int y = rect.y0; y <= rect.y1; y++) {
		TPixelCM32 *pix = ras->pixels(y) + rect.x0;
		TPixelCM32 *endPix = ras->pixels(y) + rect.x1 + 1;
		for (; pix < endPix; ++pix) {
			if (onPaint && (maskId == -1 || maskId == pix->getPaint()))
				pix->setPaint(BackgroundStyle);

			if (onInk && (maskId == -1 || maskId == pix->getInk()))
				*pix = TPixelCM32(BackgroundStyle, pix->getPaint(), TPixelCM32::getMaxTone());
		}
	}
	ras->unlock();
	return rect;
}

//-------------------------------------------------------------------

vector<TRect> ToonzImageUtils::paste(const TToonzImageP &ti, const TTileSetCM32 *tileSet)
{
	vector<TRect> rects;
	TRasterCM32P raster = ti->getRaster();
	//for(int i=0;i<tileSet->getTileCount();i++)
	for (int i = tileSet->getTileCount() - 1; i >= 0; i--) {
		const TTileSetCM32::Tile *tile = tileSet->getTile(i);
		TRasterCM32P rasCM32;
		tile->getRaster(rasCM32);
		assert(!!rasCM32);
		raster->copy(rasCM32, tile->m_rasterBounds.getP00());
		rects.push_back(tile->m_rasterBounds);
	}
	return rects;
}

//-------------------------------------------------------------------

// DA RIFARE
// e' lenta da far schifo

//!Converts a TVectorImage into a TToonzImage. The input vector image
//!is transformed through the passed affine \b aff, and put into a
//!TToonzImage strictly covering the bounding box of the transformed
//!vector image. The output image has its lower-left position in the
//!world reference specified by the \b pos parameter, which is granted to
//!be an integer displacement of the passed value. Additional parameters
//!include an integer \b enlarge by which the output image is enlarged with
//!respect to the transformed image's bbox, and the bool \b transformThickness
//!to specify whether the transformation should involve strokes' thickensses
//!or not.
TToonzImageP ToonzImageUtils::vectorToToonzImage(
	const TVectorImageP &vimage, const TAffine &aff, TPalette *palette,
	const TPointD &outputPos, const TDimension &outputSize,
	const vector<TRasterFxRenderDataP> *fxs, bool transformThickness)
{
	if (!vimage || !palette)
		return 0;

	//Transform the vector image through aff
	TVectorImageP vi = vimage->clone();
	vi->transform(aff, transformThickness);

	//Allocate the output ToonzImage
	TRasterCM32P raster(outputSize.lx, outputSize.ly);
	raster->clear();
	TToonzImageP ti(raster, raster->getBounds());
	ti->setPalette(palette->clone());

	//Shift outputPos to the origin
	vi->transform(TTranslation(-outputPos));

	int strokeCount = vi->getStrokeCount();
	vector<int> strokeIndex(strokeCount);
	vector<TStroke *> strokes(strokeCount);
	int maxStyleId = palette->getStyleCount() - 1;

	int i;
	for (i = 0; i < strokeCount; ++i) {
		strokeIndex[i] = i;
		strokes[i] = vi->getStroke(i);
	}
	vi->notifyChangedStrokes(strokeIndex, strokes);
	int regionCount = vi->getRegionCount();

	//In such reference, the clip for rendering strokes is the output size
	TRectD clip(TDimensionD(outputSize.lx, outputSize.ly));

	set<int> colors;
	if (fxs) {
		for (i = 0; i < (int)fxs->size(); i++) {
			SandorFxRenderData *sandorData = dynamic_cast<SandorFxRenderData *>((*fxs)[i].getPointer());
			if (sandorData && sandorData->m_type == BlendTz) {
				string indexes = toString(sandorData->m_blendParams.m_colorIndex);
				vector<string> items;
				parseIndexes(indexes, items);
				PaletteFilterFxRenderData paletteFilterData;
				insertIndexes(items, &paletteFilterData);
				colors.insert(paletteFilterData.m_colors.begin(), paletteFilterData.m_colors.end());
			}
		}
	}

	int k, l;
	for (i = 0; i < strokeCount;) {
		//Draw all regions which have the same group.
		for (k = 0; k < regionCount; ++k)
			if (vi->areDifferentGroup(i, false, k, true) == -1) {
				TRegion *region = vi->getRegion(k);
				fastAddPaintRegion(ti, region, tmin(maxStyleId, region->getStyle()), maxStyleId);
			}

		//Find the first stroke which does not belong to the group
		for (k = i; k < strokeCount && vi->areDifferentGroup(i, false, k, false) == -1; ++k)
			;

		//Draw all found strokes
		for (l = i; l < k; ++l) {
			TStroke *stroke = vi->getStroke(l);

			bool visible = false;
			int styleId = stroke->getStyle();
			TColorStyleP style = palette->getStyle(styleId);
			assert(style);
			int colorCount = style->getColorParamCount();
			if (colorCount == 0)
				visible = true;
			else {
				visible = false;
				for (int j = 0; j < style->getColorParamCount() && !visible; j++) {
					TPixel32 color = style->getColorParamValue(j);
					if (color.m != 0)
						visible = true;
				}
			}
			if (visible)
				fastAddInkStroke(ti, stroke, tmin(maxStyleId, stroke->getStyle()), false, false, clip, true, colors);
		}
		i = k;
	}

	return ti;
}

//-------------------------------------------------------------------

TPalette *ToonzImageUtils::loadTzPalette(const TFilePath &pltFile)
{
	TImageP pltImg;
	TImageReader loader(pltFile);
	pltImg = loader.load();

	TRasterImageP pltRasImg(pltImg);
	if (!pltRasImg)
		return 0;

	TRaster32P rasPlt = pltRasImg->getRaster();
	if (!rasPlt)
		return 0;

	map<int, pair<string, string>> pltColorNames;
	map<int, pair<string, string>>::iterator it;
	loader.getTzpPaletteColorNames(pltColorNames);

	TPalette *palette = new TPalette();

	const int offset = 0;

	assert(rasPlt->getLy() == 2);
	rasPlt->lock();
	TPixel32 *pixelRow = rasPlt->pixels(0);
	int x = 0;
	int count = palette->getStyleCount();

	for (; x < rasPlt->getLx(); ++x) {
		TSolidColorStyle *style = new TSolidColorStyle(pixelRow[x]);
		if ((it = pltColorNames.find(x)) != pltColorNames.end()) {
			string styleName = it->second.second;
			style->setName(toWideString(styleName));
		}
		if (x < count)
			palette->setStyle(x, style);
		//palette->setStyle(x, pixelRow[x]);
		else
			palette->addStyle(style);
	}

	// aggiungo solo i colori usati (salvo il BG)

	TPalette::Page *page = palette->getPage(0);
	// nella pagina c'e' gia' lo sfondo e il colore 1:
	// tolgo quest'ultimo
	page->removeStyle(1);
	// aggiungo gli altri
	map<wstring, int> pages;
	map<wstring, int>::iterator itpage;

	pixelRow = rasPlt->pixels(1);
	for (x = 0; x < rasPlt->getLx(); ++x) {
		if ((it = pltColorNames.find(x)) != pltColorNames.end()) {
			wstring pageName;
			pageName = toWideString(it->second.first);
			if (x == 0) {
				page = palette->getPage(0);
				page->setName(pageName);
				pages[pageName] = 0;
			} else if ((itpage = pages.find(pageName)) != pages.end())
				page = palette->getPage(itpage->second);
			else {
				page = palette->addPage(pageName);
				pages[pageName] = page->getIndex();
			}
		} else
			page = palette->getPage(0);

		if (pixelRow[x].r == 255)
			page->addStyle(offset + x);
	}
	rasPlt->unlock();

	return palette;
}

//-------------------------------------------------------------------

void ToonzImageUtils::getUsedStyles(std::set<int> &styles, const TToonzImageP &ti)
{
	TRasterCM32P ras = ti->getRaster();
	if (!ras)
		return;
	int lx = ras->getLx();
	int ly = ras->getLy();
	ras->lock();
	for (int y = 0; y < ly; y++) {
		TPixelCM32 *pix = ras->pixels(y);
		TPixelCM32 *endPix = pix + lx;
		while (pix < endPix) {
			styles.insert(pix->getInk());
			styles.insert(pix->getPaint());
			++pix;
		}
	}
	ras->unlock();
}

void ToonzImageUtils::scrambleStyles(const TToonzImageP &ti, std::map<int, int> styleTable)
{
	TRasterCM32P ras = ti->getRaster();
	if (!ras)
		return;
	if (styleTable.empty())
		return;
	std::map<int, int>::iterator it;
	std::vector<int> lut(4096, -1);
	bool isIdentity = true;
	for (it = styleTable.begin(); it != styleTable.end(); ++it) {
		int j = it->first, k = it->second;
		assert(j >= 0);
		assert(j < 1000000);
		if (j >= (int)lut.size())
			lut.resize(j + 1, -1);
		lut[j] = k;
		if (j != k)
			isIdentity = false;
	}
	if (isIdentity)
		return;

	int m = lut.size();
	int lx = ras->getLx();
	int ly = ras->getLy();
	ras->lock();
	for (int y = 0; y < ly; y++) {
		TPixelCM32 *pix = ras->pixels(y);
		TPixelCM32 *endPix = pix + lx;
		while (pix < endPix) {
			int ink = pix->getInk();
			if (0 <= ink && ink < m && lut[ink] >= 0)
				ink = lut[ink];
			int paint = pix->getPaint();
			if (0 <= paint && paint < m && lut[paint] >= 0)
				paint = lut[paint];
			if (ink != pix->getInk() || paint != pix->getPaint()) {
				*pix = TPixelCM32(ink, paint, pix->getTone());
			}
			++pix;
		}
	}
	ras->unlock();
}

//----------------------------------------------------------------------------------

#ifdef LEVO

bool ToonzImageUtils::convertToTlv(const TFilePath &levelPathIn)
{
	try {
		TFilePath levelPathOut = levelPathIn.getParentDir() + TFilePath(levelPathIn.getWideName() + L".tlv");

		TLevelReaderP lr(levelPathIn);
		TLevelP level = lr->loadInfo();

		TLevelWriterP lw(levelPathOut, 0);

		TPalette *plt = new TPalette();

		TLevel::Iterator it = level->begin();
		TLevel::Iterator end = level->end();
		for (; it != level->end(); ++it) {
			try {
				TImageReaderP ir = lr->getFrameReader(it->first);
				TRasterImageP img = ir->load();
				double dpix, dpiy;
				img->getDpi(dpix, dpiy);
				TRasterCM32P raster(convert(img->getBBox()).getSize());

				TRop::convert(raster, img->getRaster());

				TImageWriterP iw = lw->getFrameWriter(it->first);
				TToonzImageP outimg(raster, raster->getBounds());
				outimg->setDpi(dpix, dpiy);
				outimg->setPalette(plt);
				iw->save(outimg);

			} catch (...) {
				return false;
				//string msg="Frame "+toString(it->first.getNumber())+": conversion failed!";
				//cout << msg << endl;
			}
		}

		TFilePath pltPath = lw->getFilePath().withNoFrame().withType("tpl");
		if (TSystem::touchParentDir(pltPath)) {
			if (TSystem::doesExistFileOrLevel(pltPath))
				TSystem::removeFileOrLevel(pltPath);
			TOStream os(pltPath);
			os << plt;
		}

		lr = TLevelReaderP();
		lw = TLevelWriterP();
		//delete plt;

		return true;
	} catch (...) {
		return false;
	}
}

#endif

//----------------------------------------------------------------------------------

void ToonzImageUtils::eraseImage(const TToonzImageP &ti, const TRaster32P &image, const TPoint &pos,
								 bool invert, bool eraseInk, bool erasePaint, bool selective, int styleId)
{
	TRect rasBounds = ti->getRaster()->getBounds();
	TRect imageBounds = image->getBounds() + pos;

	if (invert) {
		/*----------------------------------------
	  	┌───┬─┐
	  	│③　　│②│
	  	├─┬─┤　│
	  	│④│★│　│
	  	│　├─┴─┤
	  	│　│①　　│
	  	└─┴───┘
	   ★はFreeHandで囲んだ領域のバウンディングボックス
	   外側のワクはラスタ画像のフチ
	  -----------------------------------------*/
		TRect rect;
		/*- ①の部分を消す -*/
		if (rasBounds.y0 != imageBounds.y0) {
			rect = TRect(imageBounds.x0, rasBounds.y0, rasBounds.x1, imageBounds.y0);
			ToonzImageUtils::eraseRect(ti, ToonzImageUtils::convertRasterToWorld(rect, ti),
									   selective ? styleId : -1, eraseInk, erasePaint);
		}
		/*- ②の部分を消す -*/
		if (imageBounds.x1 != rasBounds.x1) {
			rect = TRect(imageBounds.x1, imageBounds.y0, rasBounds.x1, rasBounds.y1);
			ToonzImageUtils::eraseRect(ti, ToonzImageUtils::convertRasterToWorld(rect, ti),
									   selective ? styleId : -1, eraseInk, erasePaint);
		}
		/*- ③の部分を消す -*/
		if (imageBounds.y1 != rasBounds.y1) {
			rect = TRect(rasBounds.x0, imageBounds.y1, imageBounds.x1, rasBounds.y1);
			ToonzImageUtils::eraseRect(ti, ToonzImageUtils::convertRasterToWorld(rect, ti),
									   selective ? styleId : -1, eraseInk, erasePaint);
		}
		/*- ④の部分を消す -*/
		if (rasBounds.x0 != imageBounds.x0) {
			rect = TRect(rasBounds.x0, rasBounds.y0, imageBounds.x0, imageBounds.y1);
			ToonzImageUtils::eraseRect(ti, ToonzImageUtils::convertRasterToWorld(rect, ti),
									   selective ? styleId : -1, eraseInk, erasePaint);
		}
	}

	TRasterCM32P workRas = ti->getRaster()->extract(imageBounds);

	int y;
	for (y = 0; y < workRas->getLy(); y++) {
		TPixelCM32 *outPix = workRas->pixels(y);
		TPixelCM32 *outEndPix = outPix + workRas->getLx();
		TPixel32 *inPix = image->pixels(y);
		for (outPix; outPix != outEndPix; outPix++, inPix++) {
			bool canEraseInk = !selective || (selective && styleId == outPix->getInk());
			bool canErasePaint = !selective || (selective && styleId == outPix->getPaint());

			int paint, tone;
			if (!invert) {
				paint = inPix->m > 0 && erasePaint && canErasePaint ? 0 : outPix->getPaint();
				tone = inPix->m > 0 && eraseInk && canEraseInk ? tmax(outPix->getTone(), (int)inPix->m) : outPix->getTone();
			} else {
				paint = inPix->m < 255 && erasePaint && canErasePaint ? 0 : outPix->getPaint();
				tone = inPix->m < 255 && eraseInk && canEraseInk ? tmax(outPix->getTone(), 255 - (int)inPix->m) : outPix->getTone();
			}
			*outPix = TPixelCM32(outPix->getInk(), paint, tone);
		}
	}
}

//-----------------------------------------------------------------------

string ToonzImageUtils::premultiply(const TFilePath &levelPath)
{
	assert(0);
	/*
if (levelPath==TFilePath())
  return "";

if(!TSystem::doesExistFileOrLevel(levelPath))
  return string("Can't find level")+toString(levelPath.getWideString());

TFileType::Type type = TFileType::getInfo(levelPath);
if(type == TFileType::CMAPPED_LEVEL)
  return "Cannot premultiply the selected file.";

if (type == TFileType::VECTOR_LEVEL || type == TFileType::VECTOR_IMAGE)
  return "Cannot premultiply a vector-based level.";

if (type != TFileType::RASTER_LEVEL && type != TFileType::RASTER_IMAGE)
  return "Cannot premultiply the selected file.";

try 
  {
  TLevelReaderP lr = TLevelReaderP(levelPath);
  if (!lr) return "";    
  TLevelP level =  lr->loadInfo();
  if(!level || level->getFrameCount()==0) return "";
  string format = levelPath.getType();


  TPropertyGroup* prop = 
    TApplication::instance()
    ->getCurrentScene()
    ->getProperties()
    ->getOutputProperties()
    ->getFileFormatProperties(format)
    ->clone();
  assert(prop);
  
  TEnumProperty *p = (TEnumProperty*)prop->getProperty("Bits Per Pixel");
  int bpp = p?atoi((toString(p->getValue()).c_str())):32; 
  if (bpp!=32 && bpp!=64) //non ha senso premoltiplicare senza il canale alpha...
    {
    if (bpp<32)
      p->setValue(L"32(RGBM)");
    else 
      p->setValue(L"64(RGBM)");
    }
    
  bool isMovie = (format=="mov" || format=="avi" || format=="3gp");


  TLevelWriterP lw;
  if (!isMovie)
    {
    lw = TLevelWriterP(levelPath, prop);
    if (!lw) return "";
    }
  
  int count = 0;
  TLevel::Iterator it = level->begin();
  
  for (;it!=level->end(); ++it)
    {  
    TImageReaderP ir = lr->getFrameReader(it->first);
    
    TRasterImageP rimg = (TRasterImageP)ir->load();
    if (!rimg)
      continue;
    
    TRop::premultiply(rimg->getRaster());
    ir = 0;
    
    if (isMovie)
      level->setFrame(it->first, rimg);
    else
      {
      TImageWriterP iw = lw->getFrameWriter(it->first);	 
      iw->save(rimg);
      iw = 0;
      }
    }

  lr = TLevelReaderP();
  
  if (isMovie)
    {
    TSystem::deleteFile(levelPath);
    lw = TLevelWriterP(levelPath, prop);
    if (!lw) return "";
    lw->save(level);
    }
  if (prop)
    delete prop;
  }catch(...) 
    {
	return "Cannot premultiply the selected file.";
    }  
    */

	return "";
}