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

#include "tfxparam.h"

#include "stdfx.h"

#include "ino_common.h"

/* tnzbase --> Source Files --> tfx --> binaryFx.cppを参照 */

class ino_blend_subtract : public TBlendForeBackRasterFx

{

	FX_PLUGIN_DECLARATION(ino_blend_subtract)

	TRasterFxPort m_up;

	TRasterFxPort m_down;

	TDoubleParamP m_opacity;

	TBoolParamP m_clipping_mask;

	TBoolParamP m_alpha_rendering;

public:

	ino_blend_subtract()

		: m_opacity(1.0 * ino::param_range()), m_clipping_mask(true), m_alpha_rendering(true)

	{

		addInputPort("Fore", this->m_up);

		addInputPort("Back", this->m_down);

		bindParam(this, "opacity", this->m_opacity);

		bindParam(this, "clipping_mask", this->m_clipping_mask);

		bindParam(this, "alpha_rendering", this->m_alpha_rendering);

		this->m_opacity->setValueRange(0, 1.0 * ino::param_range());

	}

	~ino_blend_subtract() {}

	bool canHandle(const TRenderSettings &rs, double frame)

	{

		return true;

	}

	bool doGetBBox(

		double frame, TRectD &bBox, const TRenderSettings &rs)

	{

		TRectD up_bx;

		const bool up_sw = (m_up.isConnected() ? m_up->doGetBBox(frame, up_bx, rs) : false);

		TRectD dn_bx;

		const bool dn_sw = (m_down.isConnected() ? m_down->doGetBBox(frame, dn_bx, rs) : false);

		if (up_sw && dn_sw) {

			bBox = up_bx + dn_bx;

			return !bBox.isEmpty();

		} else if (up_sw) {

			bBox = up_bx;

			return true;

		} else if (dn_sw) {

			bBox = dn_bx;

			return true;

		} else {

			bBox = TRectD();

			return false;

		}

	}

	//TRect getInvalidRect(const TRect &max) {return max;}

	//void doSetParam(const std::string &name, const TParamP ¶m) {}

	int getMemoryRequirement(

		const TRectD &rect, double frame, const TRenderSettings &rs)

	{

		return TRasterFx::memorySize(rect, rs.m_bpp);

	}

	void doDryCompute(

		TRectD &rect, double frame, const TRenderSettings &rs)

	{

		this->dryComputeUpAndDown(rect, frame, rs, false);

	}

	void doCompute(

		TTile &tile, double frame, const TRenderSettings &rs);

	void computeUpAndDown(

		TTile &tile, double frame, const TRenderSettings &rs, TRasterP &dn_ras, TRasterP &up_ras, bool upComputesWholeTile = false);

	void dryComputeUpAndDown(

		TRectD &rect, double frame, const TRenderSettings &rs, bool upComputesWholeTile = false

		/*

upComputesWholeTile は Screen, Min, Blendでtrueにして使用している。 

*/

		);

};

FX_PLUGIN_IDENTIFIER(ino_blend_subtract, "inoSubtractFx");

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

namespace

{

/* より大きな四角エリアにPixel整数値で密着する */

void makeRectCoherent(TRectD &rect, const TPointD &pos)

{

	rect -= pos;

	rect.x0 = tfloor(rect.x0); /* ((x)<(int)(x)? (int)(x)-1: (int)(x))*/

	rect.y0 = tfloor(rect.y0);

	rect.x1 = tceil(rect.x1); /* ((int)(x)<(x)? (int)(x)+1: (int)(x))*/

	rect.y1 = tceil(rect.y1);

	rect += pos;

}

}

void ino_blend_subtract::computeUpAndDown(

	TTile &tile, double frame, const TRenderSettings &rs, TRasterP &dn_ras, TRasterP &up_ras, bool upComputesWholeTile)

{

	/* ------ サポートしていないPixelタイプはエラーを投げる --- */

	if (!((TRaster32P)tile.getRaster()) &&

		!((TRaster64P)tile.getRaster())) {

		throw TRopException("unsupported input pixel type");

	}

	/*

m_down,m_upは繋がっている方があればそれを表示する

両方とも接続していれば合成処理する

表示スイッチを切ってあるならm_upを表示する

fxをreplaceすると、

	m_source   --> m_up  (=port0)

	m_refernce --> m_down(=port1)

となる

*/

	const bool up_is = (this->m_up.isConnected() &&

						this->m_up.getFx()->getTimeRegion().contains(frame));

	const bool down_is = (this->m_down.isConnected() &&

						  this->m_down.getFx()->getTimeRegion().contains(frame));

	/* ------ 両方とも切断の時処理しない ---------------------- */

	if (!up_is && !down_is) {

		tile.getRaster()->clear();

		return;

	}

	/* ------ up接続かつdown切断の時 -------------------------- */

	if (up_is && !down_is) {

		this->m_up->compute(tile, frame, rs);

		return;

	}

	/* ------ down接続時 downのみ描画して... ------------------ */

	if (down_is) {

		this->m_down->compute(tile, frame, rs);

	}

	/* ------ up切断時 ---------------------------------------- */

	if (!up_is) {

		return;

	}

	/* upと重なる部分を描画する */

	/* ------ tileの範囲 -------------------------------------- */

	const TDimension tsz(tile.getRaster()->getSize()); /* 整数 */

	const TRectD tileRect(tile.m_pos, TDimensionD(tsz.lx, tsz.ly));

	TRectD upBBox;

	if (upComputesWholeTile) {

		upBBox = tileRect;

	}	  /* tile全体を得る */

	else { /* 厳密なエリア... */

		this->m_up->getBBox(frame, upBBox, rs);

		upBBox *= tileRect; /* upとtileの交差エリア */

		/* より大きな四角エリアにPixel整数値で密着する */

		makeRectCoherent(upBBox, tile.m_pos); // double-->int grid

	}

	TDimensionI upSize(						  /* TRectDをTDimensionIに変換 */

					   tround(upBBox.getLx()) // getLx() = "x1>=x0?x1-x0:0"

					   ,

					   tround(upBBox.getLy()) // getLy() = "y1>=y0?y1-y0:0"

					   );

	if ((upSize.lx <= 0) || (upSize.ly <= 0)) {

		return;

	}

	/* ------ upのメモリ確保と描画 ---------------------------- */

	TTile upTile;

	this->m_up->allocateAndCompute(

		upTile, upBBox.getP00(), upSize, tile.getRaster() /* 32/64bitsの判定に使う */

		,

		frame, rs);

	/* ------ upとdownのTRasterを得る ------------------------- */

	TRectI dnRect(upTile.getRaster()->getSize()); //TDimensionI(-)

	dnRect += convert(upTile.m_pos - tile.m_pos); /* uptile->tile原点 */

	/*

	ここで問題はdoubleの位置を、四捨五入して整数値にしていること

	移動してから四捨五入ではないの???

	dnRectの元位置が整数位置なので、問題ないか...

	*/

	dn_ras = upComputesWholeTile ? tile.getRaster() : tile.getRaster()->extract(dnRect);

	up_ras = upTile.getRaster();

	assert(dn_ras->getSize() == up_ras->getSize());

}

void ino_blend_subtract::dryComputeUpAndDown(

	TRectD &rect, double frame, const TRenderSettings &rs, bool upComputesWholeTile)

{

	const bool up_is = (this->m_up.isConnected() &&

						this->m_up.getFx()->getTimeRegion().contains(frame));

	const bool down_is = (this->m_down.isConnected() &&

						  this->m_down.getFx()->getTimeRegion().contains(frame));

	/* ------ 両方とも切断の時処理しない ---------------------- */

	if (!up_is && !down_is) {

		return;

	}

	/* ------ up接続かつdown切断の時 -------------------------- */

	if (up_is && !down_is) {

		this->m_up->dryCompute(rect, frame, rs);

		return;

	}

	/* ------ down接続時 -------------------------------------- */

	if (down_is) {

		this->m_down->dryCompute(rect, frame, rs);

	}

	/* ------ up切断時 ---------------------------------------- */

	if (!up_is) {

		return;

	}

	/* ------ tileのgeometryを計算する ------------------------ */

	TRectD upBBox;

	if (upComputesWholeTile) {

		upBBox = rect;

	} else {

		this->m_up->getBBox(frame, upBBox, rs);

		upBBox *= rect;

		makeRectCoherent(upBBox, rect.getP00());

	}

	if ((upBBox.getLx() > 0.5) && (upBBox.getLy() > 0.5)) {

		this->m_up->dryCompute(upBBox, frame, rs);

	}

}

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

#include <sstream> /* std::ostringstream */</sstream>

#include "igs_color_blend.h"

namespace

{

template <class class="" q="" t,=""></class>

void tmpl_(

	TRasterPT<t> dn_ras_out, const TRasterPT<t> &up_ras, const double up_opacity, const bool clipping_mask_sw, const bool alpha_rendering_sw)</t></t>

{

	double maxi = static_cast<double>(T::maxChannelValue); //255or65535</double>

	assert(dn_ras_out->getSize() == up_ras->getSize());

	for (int yy = 0; yy < dn_ras_out->getLy(); ++yy) {

		T *out_pix = dn_ras_out->pixels(yy);

		const T *const out_end = out_pix + dn_ras_out->getLx();

		const T *up_pix = up_ras->pixels(yy);

		for (; out_pix < out_end; ++out_pix, ++up_pix) {

			double upr = static_cast<double>(up_pix->r) / maxi;</double>

			double upg = static_cast<double>(up_pix->g) / maxi;</double>

			double upb = static_cast<double>(up_pix->b) / maxi;</double>

			double upa = static_cast<double>(up_pix->m) / maxi;</double>

			double dnr = static_cast<double>(out_pix->r) / maxi;</double>

			double dng = static_cast<double>(out_pix->g) / maxi;</double>

			double dnb = static_cast<double>(out_pix->b) / maxi;</double>

			double dna = static_cast<double>(out_pix->m) / maxi;</double>

			igs::color::subtract(

				dnr, dng, dnb, dna, upr, upg, upb, upa, clipping_mask_sw ? up_opacity * dna : up_opacity, alpha_rendering_sw);

			out_pix->r = static_cast<q>(dnr * (maxi + 0.999999));</q>

			out_pix->g = static_cast<q>(dng * (maxi + 0.999999));</q>

			out_pix->b = static_cast<q>(dnb * (maxi + 0.999999));</q>

			out_pix->m = static_cast<q>(dna * (maxi + 0.999999));</q>

		}

	}

}

void fx_(

	TRasterP &dn_ras_out, const TRasterP &up_ras, const TPoint &pos, const double up_opacity, const bool clipping_mask_sw, const bool alpha_rendering_sw)

{

	/* 交差したエリアを処理するようにする、いるのか??? */

	TRect outRect(dn_ras_out->getBounds());

	TRect upRect(up_ras->getBounds() + pos);

	TRect intersection = outRect * upRect;

	if (intersection.isEmpty())

		return;

	TRasterP cRout = dn_ras_out->extract(intersection);

	TRect rr = intersection - pos;

	TRasterP cRup = up_ras->extract(rr);

	TRaster32P rout32 = cRout, rup32 = cRup;

	TRaster64P rout64 = cRout, rup64 = cRup;

	if (rout32 && rup32) {

		tmpl_<tpixel32, uchar="">(</tpixel32,>

			rout32, rup32, up_opacity, clipping_mask_sw, alpha_rendering_sw);

	} else if (rout64 && rup64) {

		tmpl_<tpixel64, ushort="">(</tpixel64,>

			rout64, rup64, up_opacity, clipping_mask_sw, alpha_rendering_sw);

	} else {

		throw TRopException("unsupported pixel type");

	}

}

}

void ino_blend_subtract::doCompute(

	TTile &tile, double frame, const TRenderSettings &rs)

{

	/* ------ 画像生成 ---------------------------------------- */

	TRasterP dn_ras, up_ras;

	this->computeUpAndDown(tile, frame, rs, dn_ras, up_ras);

	if (!dn_ras || !up_ras) {

		return;

	}

	/* ------ 動作パラメータを得る ---------------------------- */

	const double up_opacity = this->m_opacity->getValue(frame) / ino::param_range();

	/* ------ (app_begin)log記憶 ------------------------------ */

	const bool log_sw = ino::log_enable_sw();

	if (log_sw) {

		std::ostringstream os;

		os << "params"

		   << "  up_opacity " << up_opacity

		   << "   dn_tile w " << dn_ras->getLx()

		   << "  wrap " << dn_ras->getWrap()

		   << "  h " << dn_ras->getLy()

		   << "  pixbits " << ino::pixel_bits(dn_ras)

		   << "   up_tile w " << up_ras->getLx()

		   << "  wrap " << up_ras->getWrap()

		   << "  h " << up_ras->getLy()

		   << "  pixbits " << ino::pixel_bits(up_ras)

		   << "   frame " << frame;

	}

	/* ------ fx処理 ------------------------------------------ */

	try {

		if (dn_ras) {

			dn_ras->lock();

		}

		if (up_ras) {

			up_ras->lock();

		}

		fx_(dn_ras, up_ras, TPoint(), up_opacity, this->m_clipping_mask->getValue(), this->m_alpha_rendering->getValue());

		if (up_ras) {

			up_ras->unlock();

		}

		if (dn_ras) {

			dn_ras->unlock();

		}

	}

	/* ------ error処理 --------------------------------------- */

	catch (std::exception &e) {

		if (up_ras) {

			up_ras->unlock();

		}

		if (dn_ras) {

			dn_ras->unlock();

		}

		if (log_sw) {

			std::string str("exception <");

			str += e.what();

			str += '>';

		}

		throw;

	} catch (...) {

		if (up_ras) {

			up_ras->unlock();

		}

		if (dn_ras) {

			dn_ras->unlock();

		}

		if (log_sw) {

			std::string str("other exception");

		}

		throw;

	}

}