#include"export_Plugin.h"

#include <math.h>
using namespace std;


#ifdef WIN32 

#include<windows.h>

#ifndef FILE_MAXDIR
#define FILE_MAXDIR  160
#endif

#ifndef FILE_MAXFILE
#define FILE_MAXFILE 80
#endif


static string find_path()
{
	HKEY	hkey;
	DWORD dwType, dwSize;

	if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,"Software\\YafRay Team\\YafRay",0,KEY_READ,&hkey)==ERROR_SUCCESS)
	{
		dwType = REG_EXPAND_SZ;
	 	dwSize = MAX_PATH;
		DWORD dwStat;

		char *pInstallDir=new char[MAX_PATH];

  		dwStat=RegQueryValueEx(hkey, TEXT("InstallDir"), 
			NULL, NULL,(LPBYTE)pInstallDir, &dwSize);
		
		if (dwStat == NO_ERROR)
		{
			string res=pInstallDir;
			delete [] pInstallDir;
			return res;
		}
		else
			cout << "Couldn't READ \'InstallDir\' value. Is yafray correctly installed?\n";
		delete [] pInstallDir;

		RegCloseKey(hkey);
	}	
	else
		cout << "Couldn't FIND registry key for yafray, is it installed?\n";

	return string("");

}

static int createDir(char* name)
{
	if (BLI_exists(name))
		return 2;	//exists
	if (CreateDirectory((LPCTSTR)(name), NULL)) {
		cout << "Directory: " << name << " created\n";
		return 1;	// created
	}
	else	{
		cout << "Could not create directory: " << name << endl;
		return 0;	// fail
	}
}

extern "C" { extern char bprogname[]; }

// add drive character if not in path string, using blender executable location as reference
static void addDrive(string &path)
{
	int sp = path.find_first_of(":");
	if (sp==-1) {
		string blpath = bprogname;
		sp = blpath.find_first_of(":");
		if (sp!=-1) path = blpath.substr(0, sp+1) + path;
	}
}

#else

#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#endif

static string YafrayPath()
{
#ifdef WIN32
	string path=find_path();
	return path; 
	
#else
	static char *alternative[]=
	{
		"/usr/local/lib/",
		"/usr/lib/",
		NULL
	};

	for(int i=0;alternative[i]!=NULL;++i)
	{
		string fp=string(alternative[i])+"libyafrayplugin.so";
		struct stat st;
		if(stat(fp.c_str(),&st)<0) continue;
		if(st.st_mode&S_IROTH) return fp;
	}
	return "";
#endif
}

static string YafrayPluginPath()
{
#ifdef WIN32
	return find_path()+"\\plugins";
#else
	static char *alternative[]=
	{
		"/usr/local/lib/yafray",
		"/usr/lib/yafray",
		NULL
	};

	for(int i=0;alternative[i]!=NULL;++i)
	{
		struct stat st;
		if(stat(alternative[i],&st)<0) continue;
		if(S_ISDIR(st.st_mode) && (st.st_mode&S_IXOTH)) return alternative[i];
	}
	return "";
#endif
}



yafrayPluginRender_t::~yafrayPluginRender_t()
{
	if(yafrayGate!=NULL) delete yafrayGate;
	if(handle!=NULL) PIL_dynlib_close(handle);
#ifdef WIN32
	if(corehandle!=NULL) PIL_dynlib_close(corehandle);
#endif
}

bool yafrayPluginRender_t::initExport()
{
	if(handle==NULL)
	{
		string location=YafrayPath();
#ifdef WIN32
		/* Win 32 loader cannot find needed libs in yafray dir, so we have to load them
		 * by hand. This could be fixed using setdlldirectory function, but it is not
		 * available in all win32 versions
		 */
		corehandle=PIL_dynlib_open((char *)(location+"\\yafraycore.dll").c_str());
		if(corehandle==NULL)
		{
			cerr<<"Error loading yafray plugin: "<<PIL_dynlib_get_error_as_string(corehandle)<<endl;
			return false;
		}
		location+="\\yafrayplugin.dll";
#endif

		handle=PIL_dynlib_open((char *)location.c_str());
		 if(handle==NULL)
		{
			//cerr<<"Error loading yafray plugin: "<<dlerror()<<endl;
			cerr<<"Error loading yafray plugin: "<<PIL_dynlib_get_error_as_string(handle)<<endl;
			return false;
		}
		yafray::yafrayConstructor *constructor;
		constructor=(yafray::yafrayConstructor *)PIL_dynlib_find_symbol(handle,YAFRAY_SYMBOL);
		if(constructor==NULL)
		{
			cerr<<"Error loading yafray plugin: "<<PIL_dynlib_get_error_as_string(handle)<<endl;
			return false;
		}
		yafrayGate=constructor(1,YafrayPluginPath());
		
		cout<<"YafRay plugin loaded"<<endl;
	}
	
	if(R.rectot == NULL)
		R.rectot = (unsigned int *)MEM_callocN(sizeof(int)*R.rectx*R.recty, "rectot");

	for (unsigned short y=0;y<R.recty;y++) {
		unsigned char* bpt = (unsigned char*)R.rectot + ((((R.recty-1)-y)*R.rectx)<<2);
		for (unsigned short x=0;x<R.rectx;x++) {
			bpt[2] = 128;
			bpt[1] = 0;
			bpt[0] = 0;
			bpt[3] = 255;
			bpt += 4;
		}
	}
	
	cout<<"Image allocated"<<endl;
	return true;
}

bool yafrayPluginRender_t::writeRender()
{
	yafray::paramMap_t params;
	params["camera_name"]=yafray::parameter_t("MAINCAM");
	params["raydepth"]=yafray::parameter_t((float)R.r.YF_raydepth);
	params["gamma"]=yafray::parameter_t(R.r.YF_gamma);
	params["exposure"]=yafray::parameter_t(R.r.YF_exposure);
	if (R.r.YF_AA)
	{
		params["AA_passes"] = yafray::parameter_t((int)R.r.YF_AApasses);
		params["AA_minsamples"] = yafray::parameter_t(R.r.YF_AAsamples);
		params["AA_pixelwidth"] = yafray::parameter_t(R.r.YF_AApixelsize);
		params["AA_threshold"] = yafray::parameter_t(R.r.YF_AAthreshold);
	}
	else
	{
		if ((R.r.GImethod!=0) && (R.r.GIquality>1) && (!R.r.GIcache))
		{
			params["AA_passes"]=yafray::parameter_t(5);
			params["AA_minsamples"]=yafray::parameter_t(5);
		}
		else if ((R.r.mode & R_OSA) && (R.r.osa)) 
		{
			params["AA_passes"]=yafray::parameter_t((R.r.osa%4)==0 ? R.r.osa/4 : 1);
			params["AA_minsamples"]=yafray::parameter_t((R.r.osa%4)==0 ? 4 : R.r.osa);
		}
		else 
		{
			params["AA_passes"]=yafray::parameter_t(0);
			params["AA_minsamples"]=yafray::parameter_t(1);
		}
		params["AA_pixelwidth"]=yafray::parameter_t(1.5);
		params["AA_threshold"]=yafray::parameter_t(0.05f);
	}
	if (hasworld) params["background_name"]=yafray::parameter_t("world_background");
	params["bias"]=yafray::parameter_t(R.r.YF_raybias);
	//params["outfile"]=yafray::parameter_t(imgout);
	blenderYafrayOutput_t output;
	yafrayGate->render(params,output);
	cout<<"render finished"<<endl;
	yafrayGate->clear();
	return true;
}

bool yafrayPluginRender_t::finishExport()
{
	//displayImage();
	return true;
}

// displays the image rendered with xml export
// Now loads rendered image into blender renderbuf.
void yafrayPluginRender_t::displayImage()
{
	// although it is possible to load the image using blender,
	// maybe it is best to just do a read here, for now the yafray output is always a raw tga anyway

	// rectot already freed in initrender
	R.rectot = (unsigned int *)MEM_callocN(sizeof(int)*R.rectx*R.recty, "rectot");

	FILE* fp = fopen(imgout.c_str(), "rb");
	if (fp==NULL) {
		cout << "YAF_displayImage(): Could not open image file\n";
		return;
	}

	unsigned char header[18];
	fread(&header, 1, 18, fp);
	unsigned short width = (unsigned short)(header[12] + (header[13]<<8));
	unsigned short height = (unsigned short)(header[14] + (header[15]<<8));
	unsigned char byte_per_pix = (unsigned char)(header[16]>>3);
	// read past any id (none in this case though)
	unsigned int idlen = (unsigned int)header[0];
	if (idlen) fseek(fp, idlen, SEEK_CUR);

	// read data directly into buffer, picture is upside down
	for (unsigned short y=0;y<height;y++) {
		unsigned char* bpt = (unsigned char*)R.rectot + ((((height-1)-y)*width)<<2);
		for (unsigned short x=0;x<width;x++) {
			bpt[2] = (unsigned char)fgetc(fp);
			bpt[1] = (unsigned char)fgetc(fp);
			bpt[0] = (unsigned char)fgetc(fp);
			if (byte_per_pix==4)
				bpt[3] = (unsigned char)fgetc(fp);
			else
				bpt[3] = 255;
			bpt += 4;
		}
	}

	fclose(fp);
	fp = NULL;
}


#ifdef WIN32
#define MAXPATHLEN MAX_PATH
#else
#include <sys/param.h>
#endif
static void adjustPath(string &path)
{
	// if relative, expand to full path
	char cpath[MAXPATHLEN];
	strcpy(cpath, path.c_str());
	BLI_convertstringcode(cpath, G.sce, 0);
	path = cpath;
#ifdef WIN32
	// add drive char if not there
	addDrive(path);
#endif
}


static string noise2string(short nbtype)
{
	switch (nbtype) {
		case TEX_BLENDER:
			return "blender";
		case TEX_STDPERLIN:
			return "stdperlin";
		case TEX_VORONOI_F1:
			return "voronoi_f1";
		case TEX_VORONOI_F2:
			return "voronoi_f2";
		case TEX_VORONOI_F3:
			return "voronoi_f3";
		case TEX_VORONOI_F4:
			return "voronoi_f4";
		case TEX_VORONOI_F2F1:
			return "voronoi_f2f1";
		case TEX_VORONOI_CRACKLE:
			return "voronoi_crackle";
		case TEX_CELLNOISE:
			return "cellnoise";
		default:
		case TEX_NEWPERLIN:
			return "newperlin";
	}
}

void yafrayPluginRender_t::writeTextures()
{
	// used to keep track of images already written
	// (to avoid duplicates if also in imagetex for material TexFace texture)
	map<Image*, bool> dupimg;

	string ts;
	yafray::paramMap_t params;
	list<yafray::paramMap_t> lparams;
	for (map<string, MTex*>::const_iterator blendtex=used_textures.begin();
						blendtex!=used_textures.end();++blendtex) 
	{
		MTex* mtex = blendtex->second;
		Tex* tex = mtex->tex;
		// name is image name instead of texture name when type is image (see TEX_IMAGE case below)
		// (done because of possible combinations of 'TexFace' images and regular image textures, to avoid duplicates)
		if (tex->type!=TEX_IMAGE) params["name"] = yafray::parameter_t(blendtex->first);

		float nsz = tex->noisesize;
		if (nsz!=0.f) nsz=1.f/nsz;

		// noisebasis type
		string ntype = noise2string(tex->noisebasis);

		switch (tex->type) {
			case TEX_STUCCI:
				// stucci is clouds as bump, but could be added to yafray to handle both wall in/out as well.
				// noisedepth must be at least 1 in yafray
			case TEX_CLOUDS: {
				params["type"] = yafray::parameter_t("clouds");
				params["depth"] = yafray::parameter_t(tex->noisedepth+1);
				params["size"] = yafray::parameter_t(nsz);
				params["noise_type"] = ntype;
				break;
			}
			case TEX_WOOD:
			{
				params["type"] = yafray::parameter_t("wood");
				params["depth"] = yafray::parameter_t(tex->noisedepth+1);
				params["turbulence"] = yafray::parameter_t(tex->turbul);
				params["ringscale_x"] = yafray::parameter_t(mtex->size[0]);
				params["ringscale_y"] = yafray::parameter_t(mtex->size[1]);
				ts = "on";
				if (tex->noisetype==TEX_NOISESOFT) ts = "off";
				params["hard"] = yafray::parameter_t(ts);
				break;
			}
			case TEX_MARBLE: 
			{
				params["type"]=yafray::parameter_t("marble");
				params["depth"]=yafray::parameter_t(tex->noisedepth+1);
				params["turbulence"]=yafray::parameter_t(tex->turbul);
				ts = "on";
				if (tex->noisetype==TEX_NOISESOFT) ts = "off";
				params["hard"]=yafray::parameter_t(ts);
				if (tex->stype==1)
					params["sharpness"]=yafray::parameter_t(5);
				else if (tex->stype==2)
					params["sharpness"]=yafray::parameter_t(10);
				else
					params["sharpness"]=yafray::parameter_t(1);
				break;
			}
			case TEX_IMAGE: 
			{
				Image* ima = tex->ima;
				if (ima) {
					// remember image to avoid duplicates later if also in imagetex
					// (formerly done by removing from imagetex, but need image/material link)
					dupimg[ima] = true;
					params["type"] = yafray::parameter_t("image");
					params["name"] = yafray::parameter_t(ima->id.name);
					string texpath = ima->name;
					adjustPath(texpath);
					params["filename"] = yafray::parameter_t(texpath);
				}
				break;
			}
			case TEX_VORONOI:
			{
				params["type"] = yafray::parameter_t("voronoi");
				ts = "int";
				if (tex->vn_coltype==1)
					ts = "col1";
				else if (tex->vn_coltype==2)
					ts = "col2";
				else if (tex->vn_coltype==3)
					ts = "col3";
				params["color_type"] = yafray::parameter_t(ts);
				params["weight1"] = yafray::parameter_t(tex->vn_w1);
				params["weight2"] = yafray::parameter_t(tex->vn_w2);
				params["weight3"] = yafray::parameter_t(tex->vn_w3);
				params["weight4"] = yafray::parameter_t(tex->vn_w4);
				params["mk_exponent"] = yafray::parameter_t(tex->vn_mexp);
				params["intensity"] = yafray::parameter_t(tex->ns_outscale);
				params["size"] = yafray::parameter_t(nsz);
				ts = "actual";
				if (tex->vn_distm==TEX_DISTANCE_SQUARED)
					ts = "squared";
				else if (tex->vn_distm==TEX_MANHATTAN)
					ts = "manhattan";
				else if (tex->vn_distm==TEX_CHEBYCHEV)
					ts = "chebychev";
				else if (tex->vn_distm==TEX_MINKOVSKY_HALF)
					ts = "minkovsky_half";
				else if (tex->vn_distm==TEX_MINKOVSKY_FOUR)
					ts = "minkovsky_four";
				else if (tex->vn_distm==TEX_MINKOVSKY)
					ts = "minkovsky";
				params["distance_metric"] = yafray::parameter_t(ts);
				break;
			}
			case TEX_MUSGRAVE:
			{
				params["type"] = yafray::parameter_t("musgrave");
				switch (tex->stype) {
					case TEX_MFRACTAL:
						ts = "multifractal";
						break;
					case TEX_RIDGEDMF:
						ts = "ridgedmf";
						break;
					case TEX_HYBRIDMF:
						ts = "hybridmf";
						break;
					case TEX_HTERRAIN:
						ts = "heteroterrain";
						break;
					default:
					case TEX_FBM:
						ts = "fBm";
				}
				params["musgrave_type"] = yafray::parameter_t(ts);
				params["noise_type"] = yafray::parameter_t(ntype);
				params["H"] = yafray::parameter_t(tex->mg_H);
				params["lacunarity"] = yafray::parameter_t(tex->mg_lacunarity);
				params["octaves"] = yafray::parameter_t(tex->mg_octaves);
				if ((tex->stype==TEX_HTERRAIN) || (tex->stype==TEX_RIDGEDMF) || (tex->stype==TEX_HYBRIDMF)) {
					params["offset"] = yafray::parameter_t(tex->mg_offset);
					if ((tex->stype==TEX_RIDGEDMF) || (tex->stype==TEX_HYBRIDMF))
						params["gain"] = yafray::parameter_t(tex->mg_gain);
				}
				params["size"] = yafray::parameter_t(nsz);
				params["intensity"] = yafray::parameter_t(tex->ns_outscale);
				break;
			}
			case TEX_DISTNOISE:
			{
				params["type"] = yafray::parameter_t("distorted_noise");
				params["distort"] = yafray::parameter_t(tex->dist_amount);
				params["size"] = yafray::parameter_t(nsz);
				params["noise_type1"] = yafray::parameter_t(ntype);
				params["noise_type2"] = yafray::parameter_t(noise2string(tex->noisebasis2));
			}
			default:
				cout << "Unsupported texture type\n";
		}
		yafrayGate->addShader(params, lparams);

		// colorbands
		if (tex->flag & TEX_COLORBAND) 
		{
			ColorBand* cb = tex->coba;
			if (cb) 
			{
				params.clear();
				params["type"]=yafray::parameter_t("colorband");
				params["name"]=yafray::parameter_t(blendtex->first + "_coba");
				params["input"]=yafray::parameter_t(blendtex->first);
				for (int i=0;i<cb->tot;i++) 
				{
					yafray::paramMap_t mparams;
					mparams["value"]=yafray::parameter_t(cb->data[i].pos);
					mparams["color"]=yafray::parameter_t(yafray::colorA_t(cb->data[i].r,
																																cb->data[i].g,
																																cb->data[i].b,
																																cb->data[i].a));
					lparams.push_back(mparams);
				}
				yafrayGate->addShader(params, lparams);
			}
		}

	}

	// If used, textures for the material 'TexFace' case
	if (!imagetex.empty()) {
		for (map<Image*, Material*>::const_iterator imgtex=imagetex.begin();
					imgtex!=imagetex.end();++imgtex)
		{
			// skip if already written above
			if (dupimg.find(imgtex->first)==dupimg.end()) {
				params.clear();
				params["name"] = yafray::parameter_t(imgtex->first->id.name);
				params["type"] = yafray::parameter_t("image");
				string texpath(imgtex->first->name);
				adjustPath(texpath);
				params["filename"] = yafray::parameter_t(texpath);
				yafrayGate->addShader(params, lparams);
			}
		}
	}

}


void yafrayPluginRender_t::writeShader(const string &shader_name, Material* matr, const string &facetexname)
{
	yafray::paramMap_t params;
	params["type"] = yafray::parameter_t("blendershader");
	params["name"] = yafray::parameter_t(shader_name);
	float diff = matr->alpha;
	params["color"] = yafray::parameter_t(yafray::color_t(matr->r*diff, matr->g*diff, matr->b*diff));
	params["specular_color"] = yafray::parameter_t(yafray::color_t(matr->specr, matr->specg, matr->specb));
	params["mirror_color"] = yafray::parameter_t(yafray::color_t(matr->mirr, matr->mirg, matr->mirb));
	params["diffuse_reflect"] = yafray::parameter_t(matr->ref);
	params["specular_amount"] = yafray::parameter_t(matr->spec);
	params["hard"] = yafray::parameter_t(matr->har);
	params["alpha"] = yafray::parameter_t(matr->alpha);
	
	// if no GI used, the GIpower parameter is not always initialized, so in that case ignore it
	float bg_mult = (R.r.GImethod==0) ? 1 : R.r.GIpower;
	params["emit"]=yafray::parameter_t(matr->emit*bg_mult);

	// reflection/refraction
	if ( (matr->mode & MA_RAYMIRROR) || (matr->mode & MA_RAYTRANSP) )
		params["IOR"] = yafray::parameter_t(matr->ang);
	if (matr->mode & MA_RAYMIRROR) 
	{
		float rf = matr->ray_mirror;
		// blender uses mir color for reflection as well
		params["reflected"] = yafray::parameter_t(yafray::color_t(matr->mirr, matr->mirg, matr->mirb));
		params["min_refle"] = yafray::parameter_t(rf);
		if (matr->ray_depth>maxraydepth) maxraydepth = matr->ray_depth;
	}
	if (matr->mode & MA_RAYTRANSP) 
	{
		float tr = 1.0-matr->alpha;
		params["transmitted"]=yafray::parameter_t(yafray::color_t(matr->r*tr, matr->g*tr, matr->b*tr));
		// tir on by default
		params["tir"] = yafray::parameter_t("on");
		if (matr->ray_depth_tra>maxraydepth) maxraydepth = matr->ray_depth_tra;
	}

	string Mmode = "";
	if (matr->mode & MA_TRACEBLE) Mmode += "traceable";
	if (matr->mode & MA_SHADOW) Mmode += " shadow";
	if (matr->mode & MA_SHLESS) Mmode += " shadeless";
	if (matr->mode & MA_VERTEXCOL) Mmode += " vcol_light";
	if (matr->mode & MA_VERTEXCOLP) Mmode += " vcol_paint";
	if (matr->mode & MA_ZTRA) Mmode += " ztransp";
	if (matr->mode & MA_ONLYSHADOW) Mmode += " onlyshadow";
	if (Mmode!="") params["matmodes"] = yafray::parameter_t(Mmode);

	// modulators
	list<yafray::paramMap_t> lparams;

	// first modulator is the texture of the face, if used (TexFace mode)
	if (facetexname.length()!=0) {
			yafray::paramMap_t mparams;
			mparams["input"] = yafray::parameter_t(facetexname);
			mparams["color"] = yafray::parameter_t(1);
			lparams.push_back(mparams);
	}
	
	for (int m2=0;m2<8;m2++)
	{
		if (matr->septex & (1<<m2)) continue;// all active channels
		// ignore null mtex
		MTex* mtex = matr->mtex[m2];
		if (mtex==NULL) continue;
		// ignore null tex
		Tex* tex = mtex->tex;
		if (tex==NULL) continue;

		map<string, MTex*>::const_iterator mtexL = used_textures.find(string(tex->id.name));
		if (mtexL!=used_textures.end()) 
		{
			yafray::paramMap_t mparams;
			// when no facetex used, shader_name is created from original material name
			char temp[32];
			sprintf(temp,"_map%d", m2);
			if (facetexname.length()!=0)
				mparams["input"] = yafray::parameter_t(string(matr->id.name) + string(temp));
			else
				mparams["input"] = yafray::parameter_t(shader_name + temp);
			// blendtype
			string ts = "mix";
			if (mtex->blendtype==MTEX_MUL) ts="mul";
			else if (mtex->blendtype==MTEX_ADD) ts="add";
			else if (mtex->blendtype==MTEX_SUB) ts="sub";
			mparams["mode"]=yafray::parameter_t(ts);

			// texture color (for use with MUL and/or no_rgb etc..)
			mparams["texcol"]=yafray::parameter_t(yafray::color_t(mtex->r,mtex->g,mtex->b));
			// texture contrast, brightness & color adjustment
			mparams["filtercolor"]=yafray::parameter_t(yafray::color_t(tex->rfac,tex->gfac,tex->bfac));
			mparams["contrast"]=yafray::parameter_t(tex->contrast);
			mparams["brightness"]=yafray::parameter_t(tex->bright);
			// all texture flags now are switches, having the value 1 or -1 (negative option)
			// the negative option only used for the intensity modulation options.

			// material (diffuse) color, amount controlled by colfac (see below)
			if (mtex->mapto & MAP_COL)
				mparams["color"]=yafray::parameter_t(1.0);
			// bumpmapping
			if ((mtex->mapto & MAP_NORM) || (mtex->maptoneg & MAP_NORM)) 
			{
				// for yafray, bump factor is negated (unless negative option of 'Nor', 
				// is not affected by 'Neg')
				// scaled down quite a bit for yafray
				float nf = -mtex->norfac;
				if (mtex->maptoneg & MAP_NORM) nf *= -1.f;
				mparams["normal"] = yafray::parameter_t(nf/60.f);
			}

			// all blender texture modulation as switches, either 1 or -1 (negative state of button)
			// Csp, specular color modulation
			if (mtex->mapto & MAP_COLSPEC)
				mparams["colspec"]=yafray::parameter_t(1.0);
			// CMir, mirror color  modulation
			if (mtex->mapto & MAP_COLMIR)
				mparams["colmir"]=yafray::parameter_t(1.0);

			// Ref, diffuse reflection amount  modulation
			if ((mtex->mapto & MAP_REF) || (mtex->maptoneg & MAP_REF)) 
			{
				int t = 1;
				if (mtex->maptoneg & MAP_REF) t = -1;
				mparams["difref"]=yafray::parameter_t(t);
			}

			// Spec, specular amount mod
			if ((mtex->mapto & MAP_SPEC) || (mtex->maptoneg & MAP_SPEC)) 
			{
				int t = 1;
				if (mtex->maptoneg & MAP_SPEC) t = -1;
				mparams["specular"]=yafray::parameter_t(t);
			}

			// hardness modulation
			if ((mtex->mapto & MAP_HAR) || (mtex->maptoneg & MAP_HAR)) 
			{
				int t = 1;
				if (mtex->maptoneg & MAP_HAR) t = -1;
				mparams["hard"]=yafray::parameter_t(t);
			}

			// alpha modulation
			if ((mtex->mapto & MAP_ALPHA) || (mtex->maptoneg & MAP_ALPHA)) 
			{
				int t = 1;
				if (mtex->maptoneg & MAP_ALPHA) t = -1;
				mparams["alpha"]=yafray::parameter_t(t);
			}

			// emit modulation
			if ((mtex->mapto & MAP_EMIT) || (mtex->maptoneg & MAP_EMIT)) {
				int t = 1;
				if (mtex->maptoneg & MAP_EMIT) t = -1;
				mparams["emit"]=yafray::parameter_t(t);
			}

			// texture flag, combination of strings
			if (mtex->texflag & (MTEX_RGBTOINT | MTEX_STENCIL | MTEX_NEGATIVE)) {
				ts = "";
				if (mtex->texflag & MTEX_RGBTOINT) ts += "no_rgb ";
				if (mtex->texflag & MTEX_STENCIL) ts += "stencil ";
				if (mtex->texflag & MTEX_NEGATIVE) ts += "negative";
				mparams["texflag"]=yafray::parameter_t(ts);
			}

			// colfac, controls amount of color modulation
			mparams["colfac"]=yafray::parameter_t(mtex->colfac);
			// def_var
			mparams["def_var"]=yafray::parameter_t(mtex->def_var);
			//varfac
			mparams["varfac"]=yafray::parameter_t(mtex->varfac);

			if ((tex->imaflag & (TEX_CALCALPHA | TEX_USEALPHA)) || (tex->flag & TEX_NEGALPHA)) 
			{
				ts = "";
				if (tex->imaflag & TEX_CALCALPHA) ts += "calc_alpha ";
				if (tex->imaflag & TEX_USEALPHA) ts += "use_alpha ";
				if (tex->flag & TEX_NEGALPHA) ts += "neg_alpha";
				mparams["alpha_flag"]=yafray::parameter_t(ts);
			}
			lparams.push_back(mparams);
		}
	}
	yafrayGate->addShader(params,lparams);

}

// write all materials & modulators
void yafrayPluginRender_t::writeMaterialsAndModulators()
{
	// shaders/mappers for regular texture (or non-texture) mode
	// In case material has texface mode, and all faces have an image texture,
	// this shader will not be used, but still be written
	yafray::paramMap_t params;
	list<yafray::paramMap_t> lparams;
	for (map<string, Material*>::const_iterator blendmat=used_materials.begin();
		blendmat!=used_materials.end();++blendmat) 
	{
		Material* matr = blendmat->second;
		// mapper(s)
		for (int m=0;m<8;m++) 
		{
			if (matr->septex & (1<<m)) continue;// all active channels
			// ignore null mtex
			MTex* mtex = matr->mtex[m];
			if (mtex==NULL) continue;
			// ignore null tex
			Tex* tex = mtex->tex;
			if (tex==NULL) continue;

			map<string, MTex*>::const_iterator mtexL = used_textures.find(string(tex->id.name));
			if (mtexL!=used_textures.end()) 
			{
				params.clear();	//!!!
				lparams.clear();
				char temp[32];
				sprintf(temp, "_map%d", m);
				params["type"] = yafray::parameter_t("blendermapper");
				params["name"] = yafray::parameter_t(blendmat->first + string(temp));
				if ((mtex->texco & TEXCO_OBJECT) || (mtex->texco & TEXCO_REFL))
				{
					// For object & reflection mapping, add the object matrix to the modulator,
					// as in LF script, use camera matrix if no object specified.
					// In this case this means the inverse of that matrix
					float texmat[4][4], itexmat[4][4];
					if ((mtex->texco & TEXCO_OBJECT) && (mtex->object))
						MTC_Mat4CpyMat4(texmat, mtex->object->obmat);
					else	// also for refl. map
						MTC_Mat4CpyMat4(texmat, maincam_obj->obmat);
					MTC_Mat4Invert(itexmat, texmat);
#define flp yafray::parameter_t
					params["m00"]=flp(itexmat[0][0]);  params["m01"]=flp(itexmat[1][0]);
					params["m02"]=flp(itexmat[2][0]);  params["m03"]=flp(itexmat[3][0]);
					params["m10"]=flp(itexmat[0][1]);  params["m11"]=flp(itexmat[1][1]);
					params["m12"]=flp(itexmat[2][1]);  params["m13"]=flp(itexmat[3][1]);
					params["m20"]=flp(itexmat[0][2]);  params["m21"]=flp(itexmat[1][2]);
					params["m22"]=flp(itexmat[2][2]);  params["m23"]=flp(itexmat[3][2]);
					params["m30"]=flp(itexmat[0][3]);  params["m31"]=flp(itexmat[1][3]);
					params["m32"]=flp(itexmat[2][3]);  params["m33"]=flp(itexmat[3][3]);
#undef flp
				}
				// use image name instead of texname when texture is image
				if ((tex->type==TEX_IMAGE) && tex->ima)
					params["input"] = yafray::parameter_t(tex->ima->id.name);
				else if ((tex->flag & TEX_COLORBAND) & (tex->coba!=NULL))
					params["input"] = yafray::parameter_t(mtexL->first + "_coba");
				else
					params["input"] = yafray::parameter_t(mtexL->first);

				// texture size
				params["sizex"] = yafray::parameter_t(mtex->size[0]);
				params["sizey"] = yafray::parameter_t(mtex->size[1]);
				params["sizez"] = yafray::parameter_t(mtex->size[2]);

				// texture offset
				params["ofsx"] = yafray::parameter_t(mtex->ofs[0]);
				params["ofsy"] = yafray::parameter_t(mtex->ofs[1]);
				params["ofsz"] = yafray::parameter_t(mtex->ofs[2]);

				// texture coordinates, have to disable 'sticky' in Blender
				if (mtex->texco & TEXCO_UV)
					params["texco"] = yafray::parameter_t("uv");
				else if ((mtex->texco & TEXCO_GLOB) || (mtex->texco & TEXCO_OBJECT))
					// object mode is also set as global, but the object matrix 
					// was specified above with <modulator..>
					params["texco"] = yafray::parameter_t("global");
				else if (mtex->texco & TEXCO_ORCO)
					params["texco"] = yafray::parameter_t("orco");
				else if (mtex->texco & TEXCO_WINDOW)
					params["texco"] = yafray::parameter_t("window");
				else if (mtex->texco & TEXCO_NORM)
					params["texco"] = yafray::parameter_t("normal");
				else if (mtex->texco & TEXCO_REFL)
					params["texco"] = yafray::parameter_t("reflect");

				// texture projection axes, both image & procedural
				string proj = "nxyz";		// 'n' for 'none'
				params["proj_x"] = yafray::parameter_t(string(1,proj[mtex->projx]));
				params["proj_y"] = yafray::parameter_t(string(1,proj[mtex->projy]));
				params["proj_z"] = yafray::parameter_t(string(1,proj[mtex->projz]));

				// texture mapping parameters only relevant to image type
				if (tex->type==TEX_IMAGE) 
				{
					if (mtex->mapping==MTEX_FLAT)
						params["mapping"] = yafray::parameter_t("flat");
					else if (mtex->mapping==MTEX_CUBE)
						params["mapping"] = yafray::parameter_t("cube");
					else if (mtex->mapping==MTEX_TUBE)
						params["mapping"] = yafray::parameter_t("tube");
					else if (mtex->mapping==MTEX_SPHERE)
						params["mapping"] = yafray::parameter_t("sphere");

					// repeat
					params["xrepeat"] = yafray::parameter_t(tex->xrepeat);
					params["yrepeat"] = yafray::parameter_t(tex->yrepeat);

					// clipping
					if (tex->extend==TEX_EXTEND)
						params["clipping"] = yafray::parameter_t("extend");
					else if (tex->extend==TEX_CLIP)
						params["clipping"] = yafray::parameter_t("clip");
					else if (tex->extend==TEX_CLIPCUBE)
						params["clipping"] = yafray::parameter_t("clipcube");
					else
						params["clipping"] = yafray::parameter_t("repeat");

					// crop min/max
					params["cropmin_x"] = yafray::parameter_t(tex->cropxmin);
					params["cropmin_y"] = yafray::parameter_t(tex->cropymin);
					params["cropmax_x"] = yafray::parameter_t(tex->cropxmax);
					params["cropmax_y"] = yafray::parameter_t(tex->cropymax);

					// rot90 flag
					if (tex->imaflag & TEX_IMAROT) 
						params["rot90"] = yafray::parameter_t("on");
					else
						params["rot90"] = yafray::parameter_t("off");
				}
				yafrayGate->addShader(params, lparams);
			}
		}

		// shader + modulators
		writeShader(blendmat->first, matr);

	}

		// write the mappers & shaders for the TexFace case
	if (!imagetex.empty()) {
		// Yafray doesn't have per-face-textures, only per-face-shaders,
		// so create as many mappers/shaders as the images used by the object
		params.clear();
		lparams.clear();
		int snum = 0;
		for (map<Image*, Material*>::const_iterator imgtex=imagetex.begin();
				imgtex!=imagetex.end();++imgtex)
		{
			Material* matr = imgtex->second;

			// mapper
			params["type"] = yafray::parameter_t("blendermapper");
			char temp[32];
			sprintf(temp, "_ftex_mp%d", snum);
			params["name"] = yafray::parameter_t(string(matr->id.name) + string(temp));
			params["input"] = yafray::parameter_t(imgtex->first->id.name);
			// all yafray default settings, except for texco, so no need to set others
			params["texco"] = yafray::parameter_t("uv");
			yafrayGate->addShader(params, lparams);

			// shader, remember name, used later when writing per-face-shaders
			sprintf(temp, "_ftex_sh%d", snum);
			string shader_name = string(matr->id.name) + string(temp);
			imgtex_shader[imgtex->first] = shader_name;

			sprintf(temp, "_ftex_mp%d", snum++);
			string facetexname = string(matr->id.name) + string(temp);
			writeShader(shader_name, matr, facetexname);

		}
	}

}

void yafrayPluginRender_t::genUVcoords(vector<yafray::GFLOAT> &uvcoords, VlakRen *vlr, TFace* uvc, bool comple)
{
	if (uvc) 
	{
		// tri uv split indices
		int ui1=0, ui2=1, ui3=2;
		if (vlr->flag & R_DIVIDE_24) {
			ui3++;
			if (vlr->flag & R_FACE_SPLIT) { ui1++;  ui2++; }
		}
		else if (vlr->flag & R_FACE_SPLIT) { ui2++;  ui3++; }
		if (comple) {
			ui1 = (ui1+2) & 3;
			ui2 = (ui2+2) & 3;
			ui3 = (ui3+2) & 3;
		}
		uvcoords.push_back(uvc->uv[ui1][0]);  uvcoords.push_back(1-uvc->uv[ui1][1]);
		uvcoords.push_back(uvc->uv[ui2][0]);  uvcoords.push_back(1-uvc->uv[ui2][1]);
		uvcoords.push_back(uvc->uv[ui3][0]);  uvcoords.push_back(1-uvc->uv[ui3][1]);
	}
	else
	{
		uvcoords.push_back(0);  uvcoords.push_back(0);
		uvcoords.push_back(0);  uvcoords.push_back(0);
		uvcoords.push_back(0);  uvcoords.push_back(0);
	}
}

void yafrayPluginRender_t::genVcol(vector<yafray::CFLOAT> &vcol, VlakRen *vlr, bool comple)
{
	if (vlr->vcol)
	{
		// tri vcol split indices
		int ui1=0, ui2=1, ui3=2;
		if (vlr->flag & R_DIVIDE_24) {
			ui3++;
			if (vlr->flag & R_FACE_SPLIT) { ui1++;  ui2++; }
		}
		else if (vlr->flag & R_FACE_SPLIT) { ui2++;  ui3++; }
		if (comple) {
			ui1 = (ui1+2) & 3;
			ui2 = (ui2+2) & 3;
			ui3 = (ui3+2) & 3;
		}
		float vr = ((vlr->vcol[ui1] >> 24) & 255)/255.0;
		float vg = ((vlr->vcol[ui1] >> 16) & 255)/255.0;
		float vb = ((vlr->vcol[ui1] >> 8) & 255)/255.0;
		vcol.push_back(vr);  vcol.push_back(vg);  vcol.push_back(vb);
		vr = ((vlr->vcol[ui2] >> 24) & 255)/255.0;
		vg = ((vlr->vcol[ui2] >> 16) & 255)/255.0;
		vb = ((vlr->vcol[ui2] >> 8) & 255)/255.0;
		vcol.push_back(vr);  vcol.push_back(vg);  vcol.push_back(vb);
		vr = ((vlr->vcol[ui3] >> 24) & 255)/255.0;
		vg = ((vlr->vcol[ui3] >> 16) & 255)/255.0;
		vb = ((vlr->vcol[ui3] >> 8) & 255)/255.0;
		vcol.push_back(vr);  vcol.push_back(vg);  vcol.push_back(vb);
	}
	else
	{
		vcol.push_back(0);  vcol.push_back(0);  vcol.push_back(0);
		vcol.push_back(0);  vcol.push_back(0);  vcol.push_back(0);
		vcol.push_back(0);  vcol.push_back(0);  vcol.push_back(0);
	}
}

void yafrayPluginRender_t::genFace(vector<int> &faces,vector<string> &shaders,vector<int> &faceshader,
														vector<yafray::GFLOAT> &uvcoords,vector<yafray::CFLOAT> &vcol,
														map<VertRen*, int> &vert_idx,VlakRen *vlr,
														bool has_orco,bool has_uv)
{
	Material* fmat = vlr->mat;
	bool EXPORT_VCOL = ((fmat->mode & (MA_VERTEXCOL|MA_VERTEXCOLP))!=0);
	string fmatname(fmat->id.name);
	// use name in imgtex_shader list if 'TexFace' enabled for this face material
	if (fmat->mode & MA_FACETEXTURE) {
		TFace* tface = vlr->tface;
		if (tface) {
			Image* fimg = (Image*)tface->tpage;
			if (fimg) fmatname = imgtex_shader[fimg];
		}
	}
	else if (fmatname.length()==0) fmatname = "blender_default";
	bool newmat=true;
	for(unsigned int i=0;i<shaders.size();++i)
		if(shaders[i]==fmatname)
		{
			newmat=false;
			faceshader.push_back(i);
			break;
		}
	if(newmat)
	{
		shaders.push_back(fmatname);
		faceshader.push_back(shaders.size()-1);
	}
	TFace* uvc = vlr->tface;	// possible uvcoords (v upside down)
	int idx1, idx2, idx3;

	idx1 = vert_idx.find(vlr->v1)->second;
	idx2 = vert_idx.find(vlr->v2)->second;
	idx3 = vert_idx.find(vlr->v3)->second;

	// make sure the indices point to the vertices when orco coords exported
	if (has_orco) { idx1*=2;  idx2*=2;  idx3*=2; }

	faces.push_back(idx1);  faces.push_back(idx2);  faces.push_back(idx3);

	if(has_uv) genUVcoords(uvcoords, vlr, uvc);
	if (EXPORT_VCOL) genVcol(vcol, vlr);
}

void yafrayPluginRender_t::genCompleFace(vector<int> &faces,/*vector<string> &shaders,*/vector<int> &faceshader,
														vector<yafray::GFLOAT> &uvcoords,vector<yafray::CFLOAT> &vcol,
														map<VertRen*, int> &vert_idx,VlakRen *vlr,
														bool has_orco,bool has_uv)
{
	Material* fmat = vlr->mat;
	bool EXPORT_VCOL = ((fmat->mode & (MA_VERTEXCOL|MA_VERTEXCOLP))!=0);

	faceshader.push_back(faceshader.back());
	TFace* uvc = vlr->tface;	// possible uvcoords (v upside down)
	int idx1, idx2, idx3;
	idx1 = vert_idx.find(vlr->v3)->second;
	idx2 = vert_idx.find(vlr->v4)->second;
	idx3 = vert_idx.find(vlr->v1)->second;

	// make sure the indices point to the vertices when orco coords exported
	if (has_orco) { idx1*=2;  idx2*=2;  idx3*=2; }

	faces.push_back(idx1);  faces.push_back(idx2);  faces.push_back(idx3);

	if (has_uv) genUVcoords(uvcoords, vlr, uvc, true);
	if (EXPORT_VCOL) genVcol(vcol, vlr, true);
}

void yafrayPluginRender_t::genVertices(vector<yafray::point3d_t> &verts, int &vidx,
																			 map<VertRen*, int> &vert_idx, VlakRen* vlr, bool has_orco, Object* obj)
{
	VertRen* ver;
	float tvec[3];	// for back2world transform
	if (vert_idx.find(vlr->v1)==vert_idx.end()) 
	{
		vert_idx[vlr->v1] = vidx++;
		ver = vlr->v1;
		MTC_cp3Float(ver->co, tvec);
		MTC_Mat4MulVecfl(obj->imat, tvec);
		verts.push_back(yafray::point3d_t(tvec[0], tvec[1], tvec[2]));
		if (has_orco) 
			verts.push_back(yafray::point3d_t(ver->orco[0],ver->orco[1],ver->orco[2]));
	}
	if (vert_idx.find(vlr->v2)==vert_idx.end()) 
	{
		vert_idx[vlr->v2] = vidx++;
		ver = vlr->v2;
		MTC_cp3Float(ver->co, tvec);
		MTC_Mat4MulVecfl(obj->imat, tvec);
		verts.push_back(yafray::point3d_t(tvec[0], tvec[1], tvec[2]));
		if (has_orco)
			verts.push_back(yafray::point3d_t(ver->orco[0],ver->orco[1],ver->orco[2]));
	}
	if (vert_idx.find(vlr->v3)==vert_idx.end()) 
	{
		vert_idx[vlr->v3] = vidx++;
		ver = vlr->v3;
		MTC_cp3Float(ver->co, tvec);
		MTC_Mat4MulVecfl(obj->imat, tvec);
		verts.push_back(yafray::point3d_t(tvec[0], tvec[1], tvec[2]));
		if (has_orco)
			verts.push_back(yafray::point3d_t(ver->orco[0],ver->orco[1],ver->orco[2]));
	}
	if ((vlr->v4) && (vert_idx.find(vlr->v4)==vert_idx.end())) 
	{
		vert_idx[vlr->v4] = vidx++;
		ver = vlr->v4;
		MTC_cp3Float(ver->co, tvec);
		MTC_Mat4MulVecfl(obj->imat, tvec);
		verts.push_back(yafray::point3d_t(tvec[0], tvec[1], tvec[2]));
		if (has_orco)
			verts.push_back(yafray::point3d_t(ver->orco[0],ver->orco[1],ver->orco[2]));
	}
}

void yafrayPluginRender_t::writeObject(Object* obj, const vector<VlakRen*> &VLR_list, const float obmat[4][4])
{
	float mtr[4*4];
	mtr[0*4+0]=obmat[0][0];  mtr[0*4+1]=obmat[1][0];  mtr[0*4+2]=obmat[2][0];  mtr[0*4+3]=obmat[3][0];
	mtr[1*4+0]=obmat[0][1];  mtr[1*4+1]=obmat[1][1];  mtr[1*4+2]=obmat[2][1];  mtr[1*4+3]=obmat[3][1];
	mtr[2*4+0]=obmat[0][2];  mtr[2*4+1]=obmat[1][2];  mtr[2*4+2]=obmat[2][2];  mtr[2*4+3]=obmat[3][2];
	mtr[3*4+0]=obmat[0][3];  mtr[3*4+1]=obmat[1][3];  mtr[3*4+2]=obmat[2][3];  mtr[3*4+3]=obmat[3][3];
	yafrayGate->transformPush(mtr);
	
	VlakRen* face0 = VLR_list[0];
	Material* face0mat = face0->mat;
	
	bool castShadows = face0mat->mode & MA_TRACEBLE;
	float caus_IOR=1.0;
	yafray::color_t caus_tcolor(0.0, 0.0, 0.0), caus_rcolor(0.0, 0.0, 0.0);
	bool caus = (((face0->mat->mode & MA_RAYTRANSP) | (face0->mat->mode & MA_RAYMIRROR))!=0);
	if (caus) {
		caus_IOR = face0mat->ang;
		float tr = 1.0-face0mat->alpha;
		caus_tcolor.set(face0mat->r*tr, face0mat->g*tr, face0mat->b*tr);
		tr = face0mat->ray_mirror;
		caus_rcolor.set(face0mat->mirr*tr, face0mat->mirg*tr, face0mat->mirb*tr);
	}
	bool has_orco = (face0->v1->orco!=NULL);
	bool no_auto = true;	//in case non-mesh, or mesh has no autosmooth
	float sm_angle = 0.1f;
	if (obj->type==OB_MESH) 
	{
		Mesh* mesh = (Mesh*)obj->data;
		if (mesh->flag & ME_AUTOSMOOTH) {
			sm_angle = mesh->smoothresh;
			no_auto = false;
		}
	}
	// this for non-mesh as well
	if (no_auto) {
		// no per face smooth flag in yafray, if AutoSmooth not used, 
		// use smooth flag of the first face instead
		if (face0->flag & ME_SMOOTH) sm_angle=90;
	}
	vector<yafray::point3d_t> verts;
	vector<yafray::CFLOAT> vcol;
	// now all vertices
	map<VertRen*, int> vert_idx;	// for removing duplicate verts and creating an index list
	int vidx = 0;	// vertex index counter
	bool has_uv=false;
	for (vector<VlakRen*>::const_iterator fci=VLR_list.begin();
				fci!=VLR_list.end();++fci)
	{
		VlakRen* vlr = *fci;
		genVertices(verts, vidx, vert_idx, vlr, has_orco, obj);
		if(vlr->tface) has_uv=true;
	}
	// all faces using the index list created above
	vector<int> faces;
	vector<string> shaders;
	vector<int> faceshader;
	vector<yafray::GFLOAT> uvcoords;
	for (vector<VlakRen*>::const_iterator fci2=VLR_list.begin();
				fci2!=VLR_list.end();++fci2)
	{
		VlakRen* vlr = *fci2;
		genFace(faces, shaders, faceshader, uvcoords, vcol, vert_idx, vlr, has_orco, has_uv);
		if (vlr->v4) 
			genCompleFace(faces, faceshader, uvcoords, vcol, vert_idx, vlr, has_orco, has_uv);
	}

	yafrayGate->addObject_trimesh(string(obj->id.name), verts, faces, uvcoords, vcol,
			shaders, faceshader, sm_angle, castShadows, true, true, caus, has_orco,
			caus_rcolor, caus_tcolor, caus_IOR);
	yafrayGate->transformPop();
}


// write all objects
void yafrayPluginRender_t::writeAllObjects()
{

	// first all objects except dupliverts (and main instance object for dups)
	for (map<Object*, vector<VlakRen*> >::const_iterator obi=all_objects.begin();
			obi!=all_objects.end(); ++obi)
	{
	  // skip main duplivert object if in dupliMtx_list, written later
		Object* obj = obi->first;
		if (dupliMtx_list.find(string(obj->id.name))!=dupliMtx_list.end()) continue;
		writeObject(obj, obi->second, obj->obmat);
	}

	// Now all duplivert objects (if any) as instances of main object
	// The original object has been included in the VlakRen renderlist above (see convertBlenderScene.c)
	// but is written here which all other duplis are instances of.
	float obmat[4][4], cmat[4][4], imat[4][4], nmat[4][4];
	for (map<string, vector<float> >::const_iterator dupMtx=dupliMtx_list.begin();
		dupMtx!=dupliMtx_list.end();++dupMtx) {

		// original inverse matrix, not actual matrix of object, but first duplivert.
		for (int i=0;i<4;i++)
			for (int j=0;j<4;j++)
				obmat[i][j] = dupMtx->second[(i<<2)+j];
		MTC_Mat4Invert(imat, obmat);

		// first object written as normal (but with transform of first duplivert)
		Object* obj = dup_srcob[dupMtx->first];
		writeObject(obj, all_objects[obj], obmat);

		// all others instances of first
		for (unsigned int curmtx=16;curmtx<dupMtx->second.size();curmtx+=16) 
		{	// number of 4x4 matrices
			// new mtx
			for (int i=0;i<4;i++)
				for (int j=0;j<4;j++)
					nmat[i][j] = dupMtx->second[curmtx+(i<<2)+j];

			MTC_Mat4MulMat4(cmat, imat, nmat);	// transform with respect to original = inverse_original * new

			float mtr[4*4];
			mtr[0*4+0]=cmat[0][0];  mtr[0*4+1]=cmat[1][0];  mtr[0*4+2]=cmat[2][0];  mtr[0*4+3]=cmat[3][0];
			mtr[1*4+0]=cmat[0][1];  mtr[1*4+1]=cmat[1][1];  mtr[1*4+2]=cmat[2][1];  mtr[1*4+3]=cmat[3][1];
			mtr[2*4+0]=cmat[0][2];  mtr[2*4+1]=cmat[1][2];  mtr[2*4+2]=cmat[2][2];  mtr[2*4+3]=cmat[3][2];
			mtr[3*4+0]=cmat[0][3];  mtr[3*4+1]=cmat[1][3];  mtr[3*4+2]=cmat[2][3];  mtr[3*4+3]=cmat[3][3];
			yafrayGate->transformPush(mtr);

			// new name from original
			string name=(obj->id.name);
			char temp[16];
			sprintf(temp,"_dup%d",(curmtx>>4));
			name+=temp;
			yafrayGate->addObject_reference(name,obj->id.name);
			yafrayGate->transformPop();
		}

	}

}

void yafrayPluginRender_t::writeAreaLamp(LampRen* lamp, int num, float iview[4][4])
{
	yafray::paramMap_t params;
	
	if (lamp->area_shape!=LA_AREA_SQUARE) return;
	float *a=lamp->area[0], *b=lamp->area[1], *c=lamp->area[2], *d=lamp->area[3];
	float power=lamp->energy;
	
	string md = "off";
	// if no GI used, the GIphotons flag can still be set, so only use when 'full' selected
	if ((R.r.GImethod==2) && (R.r.GIphotons)) { md="on";  power*=R.r.GIpower; }
	params["type"]=yafray::parameter_t("arealight");
	char temp[16];
	sprintf(temp,"LAMP%d",num+1);
	params["name"]=yafray::parameter_t(temp);
	params["dummy"]=yafray::parameter_t(md);
	params["power"]=yafray::parameter_t(power);
	// samples not used for GI with photons, can still be exported, is ignored
	int psm=0, sm = lamp->ray_totsamp;
	if (sm>=25) psm = sm/5;
	params["samples"]=yafray::parameter_t(sm);
	params["psamples"]=yafray::parameter_t(psm);
	
	// transform area lamp coords back to world
	float lpco[4][3];
	MTC_Mat4Invert(iview, R.viewmat);
	MTC_cp3Float(a, lpco[0]);
	MTC_Mat4MulVecfl(iview, lpco[0]);
	MTC_cp3Float(b, lpco[1]);
	MTC_Mat4MulVecfl(iview, lpco[1]);
	MTC_cp3Float(c, lpco[2]);
	MTC_Mat4MulVecfl(iview, lpco[2]);
	MTC_cp3Float(d, lpco[3]);
	MTC_Mat4MulVecfl(iview, lpco[3]);	
	params["a"] = yafray::parameter_t(yafray::point3d_t(lpco[0][0], lpco[0][1], lpco[0][2]));
	params["b"] = yafray::parameter_t(yafray::point3d_t(lpco[1][0], lpco[1][1], lpco[1][2]));
	params["c"] = yafray::parameter_t(yafray::point3d_t(lpco[2][0], lpco[2][1], lpco[2][2]));
	params["d"] = yafray::parameter_t(yafray::point3d_t(lpco[3][0], lpco[3][1], lpco[3][2]));
	
	params["color"]=yafray::parameter_t(yafray::color_t(lamp->r,lamp->g,lamp->b));
	yafrayGate->addLight(params);
}

void yafrayPluginRender_t::writeLamps()
{
	// inver viewmatrix needed for back2world transform
	float iview[4][4];
	// R.viewinv != inv.R.viewmat because of possible ortho mode (see convertBlenderScene.c)
	// have to invert it here
	MTC_Mat4Invert(iview, R.viewmat);

	// all lamps
	for (int i=0;i<R.totlamp;i++)
	{
		yafray::paramMap_t params;
		string type="";
		LampRen* lamp = R.la[i];
		
		if (lamp->type==LA_AREA) { writeAreaLamp(lamp, i, iview);  continue; }
		
		// TODO: add decay setting in yafray
		bool is_softL=false, is_sphereL=false;
		if (lamp->type==LA_LOCAL) {
			if (lamp->mode & LA_YF_SOFT) {
				// shadowmapped omnidirectional light
				params["type"] = yafray::parameter_t("softlight");
				is_softL = true;
			}
			else if ((lamp->mode & LA_SHAD_RAY) && (lamp->YF_ltradius>0.0)) {
				// area sphere, only when ray shadows enabled and radius>0.0
				params["type"] = yafray::parameter_t("spherelight");
				is_sphereL = true;
			}
			else params["type"] = yafray::parameter_t("pointlight");
		}
		else if (lamp->type==LA_SPOT)
			params["type"] = yafray::parameter_t("spotlight");
		else if ((lamp->type==LA_SUN) || (lamp->type==LA_HEMI))	// hemi exported as sun
			params["type"] = yafray::parameter_t("sunlight");
		else if (lamp->type==LA_YF_PHOTON)
			params["type"] = yafray::parameter_t("photonlight");
		else {
			// possibly unknown type, ignore
			cout << "Unknown Blender lamp type: " << lamp->type << endl;
			continue;
		}
		
		//no name available here, create one
		char temp[16];
		sprintf(temp,"LAMP%d",i+1);
		params["name"] = yafray::parameter_t(temp);
		// color already premultiplied by energy, so only need distance here
		float pwr = 1;	// default for sun/hemi, distance irrelevant
		if ((lamp->type!=LA_SUN) && (lamp->type!=LA_HEMI)) {
			if (lamp->mode & LA_SPHERE) {
				// best approx. as used in LFexport script (LF d.f.m. 4pi?)
				pwr = lamp->dist*(lamp->dist+1)*(0.25/M_PI);
				//decay = 2;
			}
			else {
				pwr = lamp->dist;
				//decay = 1;
			}
		}

		if (is_sphereL) {
			// 'dummy' mode for spherelight when used with gpm
			string md = "off";
			// if no GI used, the GIphotons flag can still be set, so only use when 'full' selected
			if ((R.r.GImethod==2) && (R.r.GIphotons)) { md="on";  pwr*=R.r.GIpower; }
			params["power"] = yafray::parameter_t(pwr);
			params["dummy"] = yafray::parameter_t(md);
		}
		else params["power"] = yafray::parameter_t(pwr);
		
		// cast_shadows flag not used with softlight, spherelight or photonlight
		if ((!is_softL) && (!is_sphereL) && (lamp->type!=LA_YF_PHOTON)) {
			string lpmode="off";
			// Shadows only when Blender has shadow button enabled, only spots use LA_SHAD flag.
			// Also blender hemilights exported as sunlights which might have shadow flag set
			// should have cast_shadows set to off (reported by varuag)
			if (lamp->type!=LA_HEMI) {
				if (R.r.mode & R_SHADOW)
					if (((lamp->type==LA_SPOT) && (lamp->mode & LA_SHAD)) || (lamp->mode & LA_SHAD_RAY)) lpmode="on";
			}
			params["cast_shadows"] = yafray::parameter_t(lpmode);
		}
		
		// spot specific stuff
		bool has_halo = ((lamp->type==LA_SPOT) && (lamp->mode & LA_HALO) && (lamp->haint>0.0));
		if (lamp->type==LA_SPOT) {
			// conversion already changed spotsize to cosine of half angle
			float ld = 1-lamp->spotsi;	//convert back to blender slider setting
			if (ld!=0) ld = 1.f/ld;
			params["size"] = yafray::parameter_t(acos(lamp->spotsi)*180.0/M_PI);
			params["blend"] = yafray::parameter_t(lamp->spotbl*ld);
			params["beam_falloff"] = yafray::parameter_t(2.0);
			// halo params
			if (has_halo) {
				params["halo"] = yafray::parameter_t("on");
				params["res"] = yafray::parameter_t(lamp->YF_bufsize);
				int hsmp = ((12-lamp->shadhalostep)*16)/12;
				hsmp = (hsmp+1)*16;	// makes range (16, 272) for halostep(12, 0), good enough?
				params["samples"] = yafray::parameter_t(hsmp);
				params["shadow_samples"] = yafray::parameter_t(lamp->samp*lamp->samp);
				params["halo_blur"] = yafray::parameter_t(0.0);
				params["shadow_blur"] = yafray::parameter_t(lamp->soft*0.01f);
				params["fog_density"] = yafray::parameter_t(lamp->haint*0.2f);
			}
		}
		else if (is_softL) {
			// softlight
			params["res"] = yafray::parameter_t(lamp->YF_bufsize);
			params["radius"] = yafray::parameter_t(lamp->soft);
			params["bias"] = yafray::parameter_t(lamp->bias);
		}
		else if (is_sphereL) {
			// spherelight
			int psm=0, sm = lamp->ray_samp*lamp->ray_samp;
			if (sm>=25) psm = sm/5;
			params["radius"] = yafray::parameter_t(lamp->YF_ltradius);
			params["samples"] = yafray::parameter_t(sm);
			params["psamples"] = yafray::parameter_t(psm);
			params["qmc_method"] = yafray::parameter_t(1);
		}
		else if (lamp->type==LA_YF_PHOTON) {
			string qmc="off";
			if (lamp->YF_useqmc) qmc="on";
			params["photons"] = yafray::parameter_t(lamp->YF_numphotons);
			params["search"] = yafray::parameter_t(lamp->YF_numsearch);
			params["depth"] = yafray::parameter_t(lamp->YF_phdepth);
			params["use_QMC"] = yafray::parameter_t(qmc);
			params["angle"] = yafray::parameter_t(acos(lamp->spotsi)*180.0/M_PI);
			float cl = lamp->YF_causticblur/sqrt((float)lamp->YF_numsearch);
			params["fixedradius"] = yafray::parameter_t(lamp->YF_causticblur);
			params["cluster"] = yafray::parameter_t(cl);
		}

		// transform lamp co & vec back to world
		float lpco[3], lpvec[3];
		MTC_cp3Float(lamp->co, lpco);
		MTC_Mat4MulVecfl(iview, lpco);
		MTC_cp3Float(lamp->vec, lpvec);
		MTC_Mat4Mul3Vecfl(iview, lpvec);

		// position, (==-blendir for sun/hemi)
		if ((lamp->type==LA_SUN) || (lamp->type==LA_HEMI))
			params["from"] = yafray::parameter_t(yafray::point3d_t(-lpvec[0], -lpvec[1], -lpvec[2]));
		else
			params["from"] = yafray::parameter_t(yafray::point3d_t(lpco[0], lpco[1], lpco[2]));
		// 'to' for spot/photonlight, already calculated by Blender
		if ((lamp->type==LA_SPOT) || (lamp->type==LA_YF_PHOTON)) {
			params["to"] = yafray::parameter_t(yafray::point3d_t(lpco[0] + lpvec[0],
																													 lpco[1] + lpvec[1],
																													 lpco[2] + lpvec[2]));
			if (has_halo) params["fog"] = yafray::parameter_t(yafray::color_t(1.0, 1.0, 1.0));
		}
		
		// color
		// rgb in LampRen is premultiplied by energy, power is compensated for that above
		params["color"] = yafray::parameter_t(yafray::color_t(lamp->r, lamp->g, lamp->b));
		yafrayGate->addLight(params);
	}
}

// write main camera
void yafrayPluginRender_t::writeCamera()
{
	yafray::paramMap_t params;
	params["name"]=yafray::parameter_t("MAINCAM");
	if (R.r.mode & R_ORTHO)
		params["type"] = yafray::parameter_t("ortho");
	else
		params["type"] = yafray::parameter_t("perspective");
	params["resx"]=yafray::parameter_t(R.r.xsch);
	params["resy"]=yafray::parameter_t(R.r.ysch);

	float f_aspect = 1;
	if ((R.r.xsch*R.r.xasp)<=(R.r.ysch*R.r.yasp)) f_aspect = float(R.r.xsch*R.r.xasp)/float(R.r.ysch*R.r.yasp);
	params["focal"] = yafray::parameter_t(mainCamLens/(f_aspect*32.f));
	params["aspect_ratio"] = yafray::parameter_t(R.ycor);

	// dof params, only valid for real camera
	if (maincam_obj->type==OB_CAMERA) {
		Camera* cam = (Camera*)maincam_obj->data;
		params["dof_distance"] = yafray::parameter_t(cam->YF_dofdist);
		params["aperture"] = yafray::parameter_t(cam->YF_aperture);
		if (cam->flag & CAM_YF_NO_QMC)
			params["use_qmc"] = yafray::parameter_t("off");
		else
			params["use_qmc"] = yafray::parameter_t("on");
		// bokeh params
		string st = "disk1";
		if (cam->YF_bkhtype==1)
			st = "disk2";
		else if (cam->YF_bkhtype==2)
			st = "triangle";
		else if (cam->YF_bkhtype==3)
			st = "square";
		else if (cam->YF_bkhtype==4)
			st = "pentagon";
		else if (cam->YF_bkhtype==5)
			st = "hexagon";
		else if (cam->YF_bkhtype==6)
			st = "ring";
		params["bokeh_type"] = yafray::parameter_t(st);
		st = "uniform";
		if (cam->YF_bkhbias==1)
			st = "center";
		else if (cam->YF_bkhbias==2)
			st = "edge";
		params["bokeh_bias"] = yafray::parameter_t(st);
		params["bokeh_rotation"] = yafray::parameter_t(cam->YF_bkhrot);
	}

	params["from"]=yafray::parameter_t(
			yafray::point3d_t(maincam_obj->obmat[3][0], maincam_obj->obmat[3][1], maincam_obj->obmat[3][2]));
	float fdist = fabs(R.viewmat[3][2]);
	if (R.r.mode & R_ORTHO) fdist *= 0.01f;
	params["to"]=yafray::parameter_t(
			yafray::point3d_t(maincam_obj->obmat[3][0] - fdist * R.viewmat[0][2],
												maincam_obj->obmat[3][1] - fdist * R.viewmat[1][2],
												maincam_obj->obmat[3][2] - fdist * R.viewmat[2][2]));
	params["up"]=yafray::parameter_t(
			yafray::point3d_t(maincam_obj->obmat[3][0] + R.viewmat[0][1],
												maincam_obj->obmat[3][1] + R.viewmat[1][1],
												maincam_obj->obmat[3][2] + R.viewmat[2][1]));

	yafrayGate->addCamera(params);
}

void yafrayPluginRender_t::writeHemilight()
{
	yafray::paramMap_t params;
	params["type"] = yafray::parameter_t("hemilight");
	params["name"] = yafray::parameter_t("hemi_LT");
	params["power"] = yafray::parameter_t(R.r.GIpower);
	switch (R.r.GIquality)
	{
		case 1 :
		case 2 : params["samples"]=yafray::parameter_t(16);  break;
		case 3 : params["samples"]=yafray::parameter_t(36);  break;
		case 4 : params["samples"]=yafray::parameter_t(64);  break;
		case 5 : params["samples"]=yafray::parameter_t(128);  break;
		default: params["samples"]=yafray::parameter_t(25);
	}
	yafrayGate->addLight(params);
}

void yafrayPluginRender_t::writePathlight()
{
	if (R.r.GIphotons)
	{
		yafray::paramMap_t params;
		params["type"]=yafray::parameter_t("globalphotonlight");
		params["name"]=yafray::parameter_t("gpm");
		params["photons"]=yafray::parameter_t(R.r.GIphotoncount);
		params["radius"]=yafray::parameter_t(R.r.GIphotonradius);
		params["depth"]=yafray::parameter_t(((R.r.GIdepth>2) ? (R.r.GIdepth-1) : 1));
		params["caus_depth"]=yafray::parameter_t(R.r.GIcausdepth);
		params["search"]=yafray::parameter_t(R.r.GImixphotons);
		yafrayGate->addLight(params);
	}
	yafray::paramMap_t params;
	params["type"]=yafray::parameter_t("pathlight");
	params["name"]=yafray::parameter_t("path_LT");
	params["power"]=yafray::parameter_t(R.r.GIindirpower);
	params["depth"]=yafray::parameter_t(((R.r.GIphotons) ? 1 : R.r.GIdepth));
	params["caus_depth"]=yafray::parameter_t(R.r.GIcausdepth);
	if(R.r.GIdirect && R.r.GIphotons) params["direct"]=yafray::parameter_t("on");
	if (R.r.GIcache && ! (R.r.GIdirect && R.r.GIphotons))
	{
		switch (R.r.GIquality)
		{
			case 1 : params["samples"]=yafray::parameter_t(128);break;
			case 2 : params["samples"]=yafray::parameter_t(256);break;
			case 3 : params["samples"]=yafray::parameter_t(512);break;
			case 4 : params["samples"]=yafray::parameter_t(1024);break;
			case 5 : params["samples"]=yafray::parameter_t(2048);break;
			default: params["samples"]=yafray::parameter_t(256);
		}
		float aspect = 1;
		if (R.r.xsch < R.r.ysch) aspect = float(R.r.xsch)/float(R.r.ysch);
		float sbase = 2.0/float(R.r.xsch);
		params["cache"]=yafray::parameter_t("on");
		params["use_QMC"]=yafray::parameter_t("on");
		params["threshold"]=yafray::parameter_t(R.r.GIrefinement);
		params["cache_size"]=yafray::parameter_t(sbase*R.r.GIpixelspersample);
		params["shadow_threshold"]=yafray::parameter_t(1.0 - R.r.GIshadowquality);
		params["grid"]=yafray::parameter_t(82);
		params["search"]=yafray::parameter_t(35);
	}
	else
	{
		switch (R.r.GIquality)
		{
			case 1 : params["samples"]=yafray::parameter_t(16);break;
			case 2 : params["samples"]=yafray::parameter_t(36);break;
			case 3 : params["samples"]=yafray::parameter_t(64);break;
			case 4 : params["samples"]=yafray::parameter_t(128);break;
			case 5 : params["samples"]=yafray::parameter_t(256);break;
			default: params["samples"]=yafray::parameter_t(25);break;
		}
	}
	yafrayGate->addLight(params);
}

bool yafrayPluginRender_t::writeWorld()
{
	World *world = G.scene->world;
	if (R.r.GIquality!=0) {
		if (R.r.GImethod==1) {
			if (world==NULL) cout << "WARNING: need world background for skydome!\n";
			writeHemilight();
		}
		else if (R.r.GImethod==2) writePathlight();
	}

	if (world==NULL) return false;

	yafray::paramMap_t params;
	for (int i=0;i<6;i++) {
		MTex* wtex = world->mtex[i];
		if (!wtex) continue;
		Image* wimg = wtex->tex->ima;
		if ((wtex->tex->type==TEX_IMAGE) && (wimg!=NULL)) {
			string wt_path = wimg->name;
			adjustPath(wt_path);
			if (BLI_testextensie(wimg->name, ".hdr")) {
				params["type"] = yafray::parameter_t("HDRI");
				params["name"] = yafray::parameter_t("world_background");
				// since exposure adjust is an integer, using the texbri slider isn't actually very useful here (result either -1/0/1)
				params["exposure_adjust"] = yafray::parameter_t(int(world->mtex[i]->tex->bright-1));
				params["mapping"] = yafray::parameter_t("probe");
				params["filename"] = yafray::parameter_t(wt_path);
				yafrayGate->addBackground(params);
				return true;
			}
			else if (BLI_testextensie(wimg->name, ".jpg") || BLI_testextensie(wimg->name, ".jpeg") || BLI_testextensie(wimg->name, ".tga")) {
				params["type"] = yafray::parameter_t("image");
				params["name"] = yafray::parameter_t("world_background");
				/*
				// not yet in yafray, always assumes spheremap for now, not the same as in Blender,
				// which for some reason is scaled by 2 in Blender???
				if (wtex->texco & TEXCO_ANGMAP)
					params["mapping"] = yafray::parameter_t("probe");
				else
					params["mapping"] = yafray::parameter_t("sphere");
				*/
				params["filename"] = yafray::parameter_t(wt_path);
				yafrayGate->addBackground(params);
				return true;
			}
		}
	}

	params.clear();
	params["type"] = yafray::parameter_t("constant");
	params["name"] = yafray::parameter_t("world_background");
	// if no GI used, the GIpower parameter is not always initialized, so in that case ignore it
	// (have to change method to init yafray vars in Blender)
	float bg_mult = (R.r.GImethod==0) ? 1 : R.r.GIpower;
	params["color"]=yafray::parameter_t(yafray::color_t(world->horr * bg_mult,
																											world->horg * bg_mult,
																											world->horb * bg_mult));
	yafrayGate->addBackground(params);
	return true;
}

#include "RE_callbacks.h"

bool blenderYafrayOutput_t::putPixel(int x, int y,const yafray::color_t &c, 
		yafray::CFLOAT alpha,yafray::PFLOAT depth)
{
	unsigned char* bpt = (unsigned char*)R.rectot + ((((R.recty-1)-y)*R.rectx)<<2);
	int temp=(int)(c.R*255.0+0.5);
	if(temp>255) temp=255;
	bpt[4*x]=temp;
	temp=(int)(c.G*255.0+0.5);
	if(temp>255) temp=255;
	bpt[4*x+1]=temp;
	temp=(int)(c.B*255.0+0.5);
	if(temp>255) temp=255;
	bpt[4*x+2]=temp;
	temp=(int)(alpha*255.0+0.5);
	if(temp>255) temp=255;
	bpt[4*x+3]=temp;
	out++;
	if(out==4096)
	{
		RE_local_render_display(0,R.recty-1, R.rectx, R.recty, R.rectot);
		out=0;
	}
	if(RE_local_test_break())
		return false;
	return true;
}
