#include "stdfx.h"
#include "tfxparam.h"
#include "warp.h"
#include "trop.h"
#include "trasterfx.h"
#include "tspectrumparam.h"
#include "gradients.h"

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

class LinearWaveFx : public TStandardRasterFx
{
	FX_PLUGIN_DECLARATION(LinearWaveFx)
protected:
	TRasterFxPort m_warped;
	TDoubleParamP m_intensity;
	TDoubleParamP m_gridStep;
	TDoubleParamP m_count;
	TDoubleParamP m_period;
	TDoubleParamP m_cycle;
	TDoubleParamP m_amplitude;
	TDoubleParamP m_frequency;
	TDoubleParamP m_phase;
	TDoubleParamP m_angle;
	TBoolParamP m_sharpen;

public:
	LinearWaveFx()
		: m_intensity(20), m_gridStep(2), m_period(100), m_count(20), m_cycle(0.0), m_amplitude(50.0), m_frequency(200.0), m_phase(0.0), m_angle(0.0), m_sharpen(false)
	{
		addInputPort("Source", m_warped);
		bindParam(this, "intensity", m_intensity);
		bindParam(this, "sensitivity", m_gridStep);
		bindParam(this, "period", m_period);
		bindParam(this, "count", m_count);
		bindParam(this, "cycle", m_cycle);
		bindParam(this, "amplitude", m_amplitude);
		bindParam(this, "frequency", m_frequency);
		bindParam(this, "phase", m_phase);
		bindParam(this, "angle", m_angle);
		bindParam(this, "sharpen", m_sharpen);
		m_intensity->setValueRange(-1000, 1000);
		m_gridStep->setValueRange(2, 20);
		m_period->setValueRange(0, (std::numeric_limits<double>::max)());
		m_cycle->setValueRange(0, (std::numeric_limits<double>::max)());
		m_count->setValueRange(0, (std::numeric_limits<double>::max)());
		m_period->setMeasureName("fxLength");
		m_amplitude->setMeasureName("fxLength");
	}

	virtual ~LinearWaveFx() {}

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

	bool canHandle(const TRenderSettings &info, double frame)
	{
		return isAlmostIsotropic(info.m_affine);
	}

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

	bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info)
	{
		if (m_warped.isConnected()) {
			int ret = m_warped->doGetBBox(frame, bBox, info);

			if (ret && !bBox.isEmpty()) {
				if (bBox != TConsts::infiniteRectD) {
					WarpParams params;
					params.m_intensity = m_intensity->getValue(frame);

					bBox = bBox.enlarge(getWarpRadius(params));
				}
				return true;
			}
		}

		bBox = TRectD();
		return false;
	}

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

	void doDryCompute(TRectD &rect,
					  double frame,
					  const TRenderSettings &info)
	{
		bool isWarped = m_warped.isConnected();
		if (!isWarped)
			return;
		if (fabs(m_intensity->getValue(frame)) < 0.01) {
			m_warped->dryCompute(rect, frame, info);
			return;
		}

		double scale = sqrt(fabs(info.m_affine.det()));
		double gridStep = 1.5 * m_gridStep->getValue(frame);

		WarpParams params;
		params.m_intensity = m_intensity->getValue(frame) / gridStep;
		params.m_warperScale = scale * gridStep;
		params.m_sharpen = m_sharpen->getValue();

		TRectD warpedBox, warpedComputeRect, tileComputeRect;
		m_warped->getBBox(frame, warpedBox, info);

		getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, rect, params);

		if (tileComputeRect.getLx() <= 0 || tileComputeRect.getLy() <= 0)
			return;
		if (warpedComputeRect.getLx() <= 0 || warpedComputeRect.getLy() <= 0)
			return;

		m_warped->dryCompute(warpedComputeRect, frame, info);
	}

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

	void doCompute(TTile &tile, double frame, const TRenderSettings &info)
	{
		bool isWarped = m_warped.isConnected();

		if (!isWarped)
			return;

		if (fabs(m_intensity->getValue(frame)) < 0.01) {
			m_warped->compute(tile, frame, info);
			return;
		}

		int shrink = (info.m_shrinkX + info.m_shrinkY) / 2;
		double scale = sqrt(fabs(info.m_affine.det()));
		double gridStep = 1.5 * m_gridStep->getValue(frame);

		WarpParams params;
		params.m_intensity = m_intensity->getValue(frame) / gridStep;
		params.m_warperScale = scale * gridStep;
		params.m_sharpen = m_sharpen->getValue();
		params.m_shrink = shrink;
		double period = m_period->getValue(frame) / info.m_shrinkX;
		double count = m_count->getValue(frame);
		double cycle = m_cycle->getValue(frame) / info.m_shrinkX;

		double w_amplitude = m_amplitude->getValue(frame) / info.m_shrinkX;
		double w_freq = m_frequency->getValue(frame) * info.m_shrinkX;
		double w_phase = m_phase->getValue(frame);
		w_freq = (w_freq * 0.01 * TConsts::pi) / 180;
		double angle = -m_angle->getValue(frame);

		//The warper is calculated on a standard reference, with fixed dpi. This makes sure
		//that the lattice created for the warp does not depend on camera transforms and resolution.
		TRenderSettings warperInfo(info);
		double warperScaleFactor = 1.0 / params.m_warperScale;
		warperInfo.m_affine = TScale(warperScaleFactor) * info.m_affine;

		//Retrieve tile's geometry
		TRectD tileRect;
		{
			TRasterP tileRas = tile.getRaster();
			tileRect = TRectD(tile.m_pos, TDimensionD(tileRas->getLx(), tileRas->getLy()));
		}

		//Build the compute rect
		TRectD warpedBox, warpedComputeRect, tileComputeRect;
		m_warped->getBBox(frame, warpedBox, info);

		getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, tileRect, params);

		if (tileComputeRect.getLx() <= 0 || tileComputeRect.getLy() <= 0)
			return;
		if (warpedComputeRect.getLx() <= 0 || warpedComputeRect.getLy() <= 0)
			return;

		TRectD warperComputeRect(TScale(warperScaleFactor) * tileComputeRect);
		double warperEnlargement = getWarperEnlargement(params);
		warperComputeRect = warperComputeRect.enlarge(warperEnlargement);
		warperComputeRect.x0 = tfloor(warperComputeRect.x0);
		warperComputeRect.y0 = tfloor(warperComputeRect.y0);
		warperComputeRect.x1 = tceil(warperComputeRect.x1);
		warperComputeRect.y1 = tceil(warperComputeRect.y1);

		//Compute the warped tile
		TTile tileIn;
		m_warped->allocateAndCompute(tileIn, warpedComputeRect.getP00(),
									 TDimension(warpedComputeRect.getLx(), warpedComputeRect.getLy()),
									 tile.getRaster(), frame, info);
		TRasterP rasIn = tileIn.getRaster();

		//Compute the warper tile
		TSpectrum::ColorKey colors[] = {
			TSpectrum::ColorKey(0, TPixel32::White),
			TSpectrum::ColorKey(0.5, TPixel32::Black),
			TSpectrum::ColorKey(1, TPixel32::White)};

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

		//Build the multiradial
		warperInfo.m_affine = warperInfo.m_affine * TRotation(angle);
		TAffine aff = warperInfo.m_affine.inv();
		TPointD posTrasf = aff * warperComputeRect.getP00();
		TRasterP rasWarper = rasIn->create(warperComputeRect.getLx(), warperComputeRect.getLy());
		multiLinear(rasWarper, posTrasf, wavecolors, period, count, w_amplitude, w_freq, w_phase, cycle, aff, frame);

		//Warp
		TPointD db;
		TRect rasComputeRectI(convert(tileComputeRect - tileRect.getP00(), db));
		TRasterP tileRas = tile.getRaster()->extract(rasComputeRectI);

		TPointD rasInPos(warpedComputeRect.getP00() - tileComputeRect.getP00());
		TPointD warperPos((TScale(params.m_warperScale) * warperComputeRect.getP00()) - tileComputeRect.getP00());
		warp(tileRas, rasIn, rasWarper, rasInPos, warperPos, params);
	}

	int getMemoryRequirement(const TRectD &rect, double frame, const TRenderSettings &info)
	{
		//return -1;   //Deactivated. This fx is currently very inefficient if subdivided!

		int shrink = (info.m_shrinkX + info.m_shrinkY) / 2;
		double scale = sqrt(fabs(info.m_affine.det()));
		double gridStep = 1.5 * m_gridStep->getValue(frame);

		WarpParams params;
		params.m_intensity = m_intensity->getValue(frame) / gridStep;
		params.m_warperScale = scale * gridStep;
		params.m_sharpen = m_sharpen->getValue();
		params.m_shrink = shrink;

		double warperScaleFactor = 1.0 / params.m_warperScale;

		TRectD warpedBox, warpedComputeRect, tileComputeRect;
		m_warped->getBBox(frame, warpedBox, info);

		getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, rect, params);

		TRectD warperComputeRect(TScale(warperScaleFactor) * tileComputeRect);
		double warperEnlargement = getWarperEnlargement(params);
		warperComputeRect = warperComputeRect.enlarge(warperEnlargement);

		return tmax(
			TRasterFx::memorySize(warpedComputeRect, info.m_bpp),
			TRasterFx::memorySize(warperComputeRect, info.m_bpp));
	}
};

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

FX_PLUGIN_IDENTIFIER(LinearWaveFx, "linearWaveFx")