#include "texception.h"

#include "tfxparam.h"

#include "stdfx.h"

#include "tspectrumparam.h"

#include "tparamuiconcept.h"

#undef max

//===================================================================

class SquareGradientFx : public TStandardZeraryFx

{

	FX_PLUGIN_DECLARATION(SquareGradientFx)

	TSpectrumParamP m_colors;

	TDoubleParamP m_size;

public:

	SquareGradientFx()

		: m_size(200.0)

	{

		m_size->setMeasureName("fxLength");

		TSpectrum::ColorKey colors[] = {

			TSpectrum::ColorKey(0, TPixel32::White),

			//TSpectrum::ColorKey(0.5,TPixel32::Yellow),

			TSpectrum::ColorKey(1, TPixel32::Red)};

		m_colors = TSpectrumParamP(tArrayCount(colors), colors);

		bindParam(this, "colors", m_colors);

		bindParam(this, "size", m_size);

		m_size->setValueRange(0, std::numeric_limits<double>::max());

	}

	~SquareGradientFx(){};

	bool doGetBBox(double, TRectD &bBox, const TRenderSettings &info)

	{

		bBox = TConsts::infiniteRectD;

		return true;

	};

	void doCompute(TTile &tile, double frame, const TRenderSettings &ri);

	bool canHandle(const TRenderSettings &info, double frame) { return true; }

	void getParamUIs(TParamUIConcept *&concepts, int &length)

	{

		concepts = new TParamUIConcept[length = 1];

		concepts[0].m_type = TParamUIConcept::DIAMOND;

		concepts[0].m_label = "Size";

		concepts[0].m_params.push_back(m_size);

	}

};

template <typename PIXEL>

void doSquareGradient(const TRasterPT<PIXEL> &ras, const TSpectrumT<PIXEL> &spectrum, TPointD &posTrasf, TAffine aff, double size)

{

	PIXEL outpixel = spectrum.getPremultipliedValue(1.);

	int j;

	ras->lock();

	for (j = 0; j < ras->getLy(); j++) {

		TPointD posAux = posTrasf;

		TPointD fp;

		PIXEL *pix = ras->pixels(j);

		PIXEL *endPix = pix + ras->getLx();

		while (pix < endPix) {

			double s;

			fp.x = fabs(posAux.x) / size;

			fp.y = fabs(posAux.y) / size;

			if ((fp.x + fp.y) < 1) {

				s = fp.x + fp.y;

				*pix++ = spectrum.getPremultipliedValue(s);

			} else

				*pix++ = outpixel;

			posAux.x += aff.a11;

			posAux.y += aff.a21;

		}

		posTrasf.x += aff.a12;

		posTrasf.y += aff.a22;

	}

	ras->unlock();

}

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

void SquareGradientFx::doCompute(TTile &tile, double frame,

								 const TRenderSettings &ri)

{

	double size = m_size->getValue(frame) / ri.m_shrinkX;

	;

	TAffine aff = ri.m_affine.inv();

	TPointD posTrasf = aff * tile.m_pos;

	if (TRaster32P raster32 = tile.getRaster())

		doSquareGradient<TPixel32>(

			raster32,

			m_colors->getValue(frame),

			posTrasf, aff, size);

	else if (TRaster64P raster64 = tile.getRaster())

		doSquareGradient<TPixel64>(

			raster64,

			m_colors->getValue64(frame),

			posTrasf, aff, size);

	else

		throw TException("SquareGradientFx: unsupported Pixel Type");

}

FX_PLUGIN_IDENTIFIER(SquareGradientFx, "squareGradientFx");