private static void loadMlt(Map<String,IMaterial> materials, String lin, String name) throws IOException{
        String mtllib=lin.substring("mtllib".length()).trim();

        String path;
        int pos=name.lastIndexOf('/');
        if(pos==-1) path="models/"+mtllib;
        else path="models/"+name.substring(0, pos+1)+mtllib;

        try(InputStream mtlSrc=UtilM.getResource(path)){

            if(mtlSrc==null){
                LogUtil.println("Model mtl file", path, "does not exist!");
                return;
            }

            PairM<Material,Integer> mat=new PairM<>(null, 0);

            lines(mtlSrc, line->{
                if(line.isEmpty()||line.charAt(0)=='#') return;

                if(line.startsWith("newmtl ")){
                    mat.obj1=new Material(mat.obj2++, line.substring("newmtl ".length()));

                    materials.put(mat.obj1.getName(), mat.obj1);
                    return;
                }
                Material mater=mat.obj1;

                if(mater!=null){
                    // @formatter:off
                    switch(line.charAt(0)){
                    case 'K':
                        switch(line.charAt(1)){
                        case 'a':mater.getAmbient() .load(line, 3);break;
                        case 'd':mater.getDiffuse() .load(line, 3);break;
                        case 's':mater.getSpecular().load(line, 3);break;
                        case 'e':mater.getEmission().load(line, 3);break;
                        }
                        break;
                    case 'N':
                        if(line.charAt(1)=='s') mater.setShineDamper(Float.parseFloat(line.split(" ")[1]));
                        break;
                    case 'd':mater.setShineDamper(Float.parseFloat(line.split(" ")[1]));break;
                    default:
                        if(line.startsWith("jelly ")) mater.setJelly(MathUtil.snap(Float.parseFloat(line.substring("jelly ".length())), 0, 1));
                    }
                    // @formatter:on
                }
            });

        }
    }