/***********************************************************************************************
	
	Ultimate++ Multi Threading example
	
	Copyright (c) 2007, Artur Bac
	 ______ ____           _____        __ _   
	|  ____|  _ \   /\    / ____|      / _| |  
	| |__  | |_) | /  \  | (___   ___ | |_| |_ 
	|  __| |  _ < / /\ \  \___ \ / _ \|  _| __|
	| |____| |_) / ____ \ ____) | (_) | | | |_ 
	|______|____/_/    \_\_____/ \___/|_|  \__|

	All rights reserved.

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    	  this list of conditions and the following disclaimer.
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    	  to endorse or promote products derived from this software without specific 
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	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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***********************************************************************************************/

#include "Threads.h"
#include <cmath>
#define TFILE <Threads/Threads.t>
#include <Core/t.h>

Threads::Threads()
	: threads(0)
	, area(-2.0,-1.1, 0.60, 1.1)
	, densityR (1)
	, densityC (1)
	, rows (1)
	, cols (1)
	, julia_c(Complex(-0.4,0.6))
	, posOnClick(0,0)
	, moveShift(0,0)
	, moving(false)
{
	SetLanguage(SetLNGCharset(GetSystemLNG(), CHARSET_UTF8));
	CtrlLayout(*this, t_("Threads"));
	inp_col.SetData(4);
	inp_row.SetData(3);
	inp_iter.SetData(500);
	inp_threads.SetData(3);
	edb_re.SetData(-0.4);
	edb_im.SetData(0.6);
	AddFrame(statusBar);
	
	statusBar.AddFrame(time.Right(140));
	
	BackPaint();
	Zoomable().Sizeable();
	picbox.onPaint = callback(this, &Threads::picbox_Paint);
	picbox.onLeftDown = callback(this, &Threads::picbox_LeftDown);
	picbox.onLeftUp = callback(this, &Threads::picbox_LeftUp);
	picbox.onMouseMove= callback(this, &Threads::picbox_MouseMove);
	
	cbx_fractal_set.Add( t_("Mandelbrot"));
	cbx_fractal_set.Add( t_("Qubic Mandelbrot"));
	cbx_fractal_set.Add( t_("Quadric Mandelbrot"));
	cbx_fractal_set.Add( t_("Julia Set"));
	cbx_fractal_set.Add( t_("Qubic Julia Set"));
	cbx_fractal_set.Add( t_("Quadric Julia Set"));
	cbx_fractal_set.Add( t_("Phoenix Set"));
	cbx_fractal_set.Add( t_("BacPhoenix Set"));
	cbx_fractal_set.Add( t_("Bać Set - my own :) discovered by mistake..."));
	
	cbx_fractal_set.WhenAction = THISBACK(SetSelected);
	btn_recalculate.WhenAction = THISBACK(DoJob);
	cbx_fractal_set.SetIndex(0);
}

void Threads::picbox_Paint(Upp::Draw & g )
{
	int i,r,c,w,h;

	if (picbox.GetSize().cx == 0 || picbox.GetSize().cy == 0)
		return;
	
	DrawingDraw d(cols,rows);
	d.DrawRect(0,0,rows,cols, White);
	
	INTERLOCKED_(job_lock) {
		for (i=0; i< active.GetCount(); i++)
		{
			r = active.GetKey(i) / cols;
			c = active.GetKey(i) % cols;
			d.DrawRect(c,r,1,1,Color(255,255,0));
		}
	}
	g.Offset(moveShift);
	g.DrawDrawing(0,0,densityC * cols, densityR * rows,d);
	
	INTERLOCKED_(image_lock) {
		for (i=0; i < rendered.GetCount(); i++)
		{
			r = rendered.GetKey(i) / cols;
			c = rendered.GetKey(i) % cols;
			w = picbox.GetSize().cx / cols;
			h = picbox.GetSize().cy / rows;
			g.DrawImage(c * w, r *h, w, h, rendered[i]);
		}
	}
	DrawAxis(g);
	g.End();
}



void Threads::ThreadRenderJob(int r, int c, const FractalJobHandeler & job, int)
{
	if (densityR == 0 || densityC==0) return;
	
	double UNITC = area.Width() / (densityC * cols);
	double UNITR = area.Height() / (densityR * rows);
	int iter, y0, x0;
	RGBA *l;
	
	ImageBuffer  ib(densityC, densityR);
	
	for (y0 = 0; y0< densityR; y0++)
	{
		l = ib[y0];
		for (x0 = 0; x0< densityC; x0++)
		{
			Complex tmp(area.left + UNITC *( c*densityC + x0), area.top + UNITR*( y0 + r*densityR));
			job(tmp, &iter);
			
			l->a = 0xFF;
			l->r = ( iter == maxIter ) ? 0  : 255 - (int)(250 * log10((double)iter) / logmax);//255 - iter * 120 / maxIter ;
			l->g = ( iter == maxIter ) ? 0  : 20 ;//iter * 125 / maxIter;
			l->b = ( iter == maxIter ) ? 0  : 40 + (int)(205 * log10((double)iter) / logmax) ;//120 + iter * 125 / maxIter ;
			l++;
		}
	}
	
	AtomicDec(threads);
	INTERLOCKED_(job_lock) 
		active.RemoveKey(r * cols + c);
	INTERLOCKED_(image_lock) 
		rendered.Add(r * cols + c, ib);
	waitforfinish.Release();
}

void Threads::DrawAxis(Upp::Draw & g)
{
	const int DENS = 1000;
	double re_step = area.Width() * 0.05;
	double im_step = area.Height() * 0.05;
	int side = 1;
	Complex re_value(area.left, area.top + area.Height()*0.5);
	Complex im_value(area.left + area.Width()*0.5, area.top);
	
	DrawingDraw axis(DENS<<1,DENS<<1);
	axis.DrawLine(0,DENS,DENS<<1,DENS,1,White);
	axis.DrawLine(DENS,0,DENS,DENS<<1,1,White);
	
	for (int i=0; i< (DENS<<1); i += DENS/10)
	{
		side *= -1;
		re_value.SetRe(re_value.Re() + re_step );
		im_value.SetIm(im_value.Im() + im_step );
		axis.DrawLine(i,DENS - DENS/50,i,DENS+DENS/50,1,White);
		axis.DrawLine(DENS - DENS/50,i,DENS+DENS/50,i,1,White);
		axis.DrawText(i,DENS + side * DENS/30, - side *900,ToString(re_value),Arial(12*(DENS<<1)/ picbox.GetSize().cy),White);
		axis.DrawText(DENS + DENS/30,i,ToString(im_value),Arial(12*(DENS<<1)/ picbox.GetSize().cx),White);
		
		for (int j=DENS/100; j< (DENS/10); j += DENS/100){
			axis.DrawLine(i + j,DENS - DENS/120,i +j,DENS+DENS/120,1,Color(0xAA,0xAA,0xAA));
			axis.DrawLine(DENS - DENS/120,i + j,DENS+DENS/120,i +j,1,Color(0xAA,0xAA,0xAA));
		}
	}
	g.DrawDrawing(0,0,picbox.GetSize().cx, picbox.GetSize().cy,axis);
}

String FormatTS (int ms) { return Format("Render time %d:%02.2d.%03d",(ms/1000/60), (ms / 1000) % 60, ms % 1000 );}

void Threads::Process(const FractalJobHandeler & job)
{
	ProgressInfo statTotal(statusBar);

	rows = inp_row.GetData();
	cols = inp_col.GetData();
	densityR = picbox.GetSize().cy / rows;
	densityC = picbox.GetSize().cx / cols;
	maxIter = inp_iter.GetData();
	logmax= log10((double)maxIter);
	max_threads = inp_threads.GetData();
	
	statTotal.Set(0,rows*cols);
	
	TimeStop startTime;
	
	for (int r = 0; r < rows; r++){
		for (int c = 0; c < cols; c++)
		{
			while(threads >= max_threads)
				waitforfinish.Wait();
			
			AtomicInc(threads);
			Thread().Run(callback4(this, &Threads::ThreadRenderJob, r, c, job, 0));
			
			INTERLOCKED_(job_lock)
				active.Add((r * cols + c), 0);
			
			statTotal.Text(Format("Invoking calculations for sector R:%02d  C:%02d",r,c));
			time.Set(FormatTS(startTime.Elapsed()));
			picbox.Refresh();
			statTotal.Set(r * cols + c,rows*cols);
			ProcessEvents();
		}
	}
	
	while(threads > 0)
		waitforfinish.Wait();

	time.Set(FormatTS(startTime.Elapsed()));
	picbox.Refresh();
}

void Threads::SetSelected()
{
	switch (cbx_fractal_set.GetIndex())
	{
		case 0:
			area = Rect_<double>(-2.0,-1.1, 0.60, 1.1);
			break;
		case 1:
			area = Rect_<double>(-1.3,-1.3, 1.3, 1.3);
			break;
		case 2:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			break;
		case 3:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			edb_re.SetData(-0.4);
			edb_im.SetData(0.6);
			break;
		case 4:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			break;
		case 5:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			break;
		case 6:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			edb_re.SetData(-0.4);
			edb_im.SetData(0.6);
			break;
		case 7:
			area = Rect_<double>(-1.5,-1.0, 1.5, 1.0);
			break;
		case 8:
			area = Rect_<double>(-1.25,-1.2, 1.75, 1.2);
			edb_re.SetData(-0.4);
			edb_im.SetData(0.5);
			break;
	}
	DoJob();
}


void Threads::DoJob()
{
	rendered.Clear();
	FractalJobHandeler job;
	
	switch (cbx_fractal_set.GetIndex())
	{
		case 0:
			job = FractalJobHandeler(callback(this,&Threads::FnMandelbrot));
			break;
		case 1:
			job = FractalJobHandeler(callback(this,&Threads::FnQubicMandelbrot));
			break;
		case 2:
			job = FractalJobHandeler(callback(this,&Threads::FnQuadricMandelbrot));
			break;
		case 3:
			job = FractalJobHandeler(callback(this,&Threads::FnJulia));
			julia_c = Complex(~edb_re, ~edb_im);
			break;
		case 4:
			job = FractalJobHandeler(callback(this,&Threads::FnQubicJulia));
			julia_c = Complex(~edb_re, ~edb_im);
			break;
		case 5:
			job = FractalJobHandeler(callback(this,&Threads::FnQuadricJulia));
			julia_c = Complex(~edb_re, ~edb_im);
			break;
		case 6:
			job = FractalJobHandeler(callback(this,&Threads::FnPhoenix));
			break;
		case 7:
			job = FractalJobHandeler(callback(this,&Threads::FnBacPhoenix));
			julia_c = Complex(~edb_re, ~edb_im);
			break;
		case 8:
			job = FractalJobHandeler(callback(this,&Threads::FnBac));
			julia_c = Complex(~edb_re, ~edb_im);
			break;
	}
	Process(job);
}

void Threads::FnMandelbrot(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp + cpx;
	*res = iter;
}
void Threads::FnQubicMandelbrot(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp * tmp + cpx;
	*res = iter;
}
void Threads::FnQuadricMandelbrot(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp * tmp * tmp + cpx;
	*res = iter;
}
void Threads::FnJulia(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp + julia_c;
	*res = iter;
}
void Threads::FnQubicJulia(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp * tmp + julia_c;
	*res = iter;
}
void Threads::FnQuadricJulia(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmp(cpx);
	for (iter = 0; tmp.Abs2() < 4  &&  iter < maxIter ;iter++)
		tmp = tmp * tmp * tmp * tmp + julia_c;
	*res = iter;
}
void Threads::FnPhoenix(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmpp;
	Complex tmp;
	Complex tmpn(cpx);
	for (iter = 0; tmpn.Abs2() < 4  &&  iter < maxIter ;iter++){
		tmp = tmpn;
		tmpn = tmp * tmp + julia_c.Re() + Complex(0,julia_c.Im()) * tmpp;
		tmpp = tmp;
	}
	*res = iter;
}
//My Own Sets made by mistake
void Threads::FnBacPhoenix(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmpp;
	Complex tmp;
	Complex tmpn(cpx);
	for (iter = 0; tmpn.Abs2() < 4  &&  iter < maxIter ;iter++){
		tmp = tmpn;
		tmpn = tmp * tmp + julia_c.Re() + julia_c.Im() + tmpp;
		tmpp = tmp;
	}
	*res = iter;
}

void Threads::FnBac(const Complex & cpx, int *res) const
{
	int iter =0;
	Complex tmpp;
	Complex tmp;
	Complex tmpn(cpx);
	for (iter = 0; tmpn.Abs2() < 4  &&  iter < maxIter ;iter++){
		tmp = tmpn;
		tmpn = tmp * tmp + tmpp.Re() + tmpp.Im() + julia_c;
		tmpp = tmp;
	}
	*res = iter;
}
void Threads::picbox_LeftDown(Point p, dword keyflags )
{
		if (keyflags & K_CTRL)
		{
			RectTracker tr(picbox);
			Rect s_xy = RectC(p.x, p.y, 0, 0);
			tr.Solid().Animation();
			s_xy = tr.Track(s_xy, ALIGN_RIGHT, ALIGN_BOTTOM);
			area = Rect_<double>( area.left + (double)s_xy.left * area.Width() / picbox.GetSize().cx
									, area.top + (double)s_xy.top * area.Height() / picbox.GetSize().cy
									, area.left + (double)s_xy.right * area.Width() / picbox.GetSize().cx 
									, area.top + (double)s_xy.bottom * area.Height() / picbox.GetSize().cy );
			DoJob();
		}
		else
			moving = true;
		
	posOnClick = p;
}


void Threads::picbox_LeftUp(Point p, dword keyflags )
{
	if (moving)
	{
		moveShift = p - posOnClick;
		double dx = (moveShift.cx* 1.0 / picbox.GetSize().cx) *area.Width();
		double dy = (moveShift.cy* 1.0 / picbox.GetSize().cy) *area.Height();
		area = Rect_<double>(area.left - dx, area.top - dy, area.right - dx,area.bottom - dy);
	}
	moving = false;
	moveShift = Size(0, 0);
	DoJob();
}

void Threads::picbox_MouseMove(Point p, dword keyflags )
{
	if (moving)
	{
		moveShift = p - posOnClick;
		picbox.Refresh();
	}
}