case 90://Tipka Z skaliranje po z
                skalZ += 1;
                break;
            case 85://Tipka U skaliranje po z
                skalZ -= 1;
                break;
            case 74://TIPKA J nedeluje
                kam1x += 1;
                break;
            case 76://TIPKA L nedeluje
                kam1x -= 1;
                break;
            case 73://TIPKA I nedeluje
                kam1y += 1;
                break;
            case 75://TIPKA K nedeluje
                kam1y -= 1;
                break;
            case 79://Tipka O premik kamere po z
                kam1z += 1;
                break;
            case 80://Tipka P premik kamere po z
                kam1z -= 1;
                break;
            default:



function drawLoop()
{
        gl.enable(gl.DEPTH_TEST);//prekrivanje objektov
        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
        // nastavi viewport
        // nastavi projekcijo in kamero

        gl.useProgram(program);
        gl.bindBuffer(gl.ARRAY_BUFFER, bufferTrikotniki);
        gl.enableVertexAttribArray(0);
        gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 4*3, 0);//OGLIŠČA * x,y,z
        {
            //KOCKA
            var proj_matrix = mat4.create();
            mat4.perspective(proj_matrix, glMatrix.toRadian(80), myCanvas.width / myCanvas.height, 0.1, 1000);

            var model_matrix=mat4.identity(mat4.create());

            var view_matrix = mat4.create();//Kamera pogleda (premikanje kamere)
            mat4.identity(view_matrix);
            view_matrix = mat4.translate(mat4.create(), view_matrix, vec3.fromValues(premKamereX, premKamereY, premKamereZ));//premik kamere po sceni x,y,z
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1x), vec3.fromValues(0, 1, 0));
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1y), vec3.fromValues(1, 0, 0));
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1z), vec3.fromValues(0, 0, 1));

            //premikanje objektov
            model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(translateX, translateY, translateZ));//translacija objekta
            model_matrix = mat4.scale(mat4.create(), model_matrix, vec3.fromValues(skalX, skalY, skalZ));//translacija objekta
            model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleY), vec3.fromValues(0, 1, 0));
            model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleX), vec3.fromValues(1, 0, 0));
            //model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleZ), vec3.fromValues(0, 0, 1));

            var zanka=2;
            while(zanka!=0)
            {

                gl.useProgram(program);
                model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(0, 0, 0));//translacija objekta
                var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));
                gl.uniformMatrix4fv(gl.getUniformLocation(program, "PVM"), false, PVM);
                gl.drawArrays(gl.TRIANGLES, 0, 12*3);//OGLIŠČA
                zanka--;
            }
            zanka=1;
            while(zanka!=0)
            {
                gl.useProgram(program1);
                model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(2, 0, 0));//translacija objekta
                var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));
                gl.uniformMatrix4fv(gl.getUniformLocation(program1, "PVM"), false, PVM);
                gl.drawArrays(gl.TRIANGLES, 0, 12*3);//OGLIŠČA
                zanka--;
            }
            zanka=1;
             while(zanka!=0)
            {
                gl.useProgram(program2);
                model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(-2, 0, 2));//translacija objekta
                var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));
                gl.uniformMatrix4fv(gl.getUniformLocation(program2, "PVM"), false, PVM);
                gl.drawArrays(gl.TRIANGLES, 0, 12*3);//OGLIŠČA
                zanka--;
            }
            zanka=1;
            while(zanka!=0)
            {
                gl.useProgram(program3);
                model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(2, 0, 0));//translacija objekta
                var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));
                gl.uniformMatrix4fv(gl.getUniformLocation(program3, "PVM"), false, PVM);
                gl.drawArrays(gl.TRIANGLES, 0, 12*3);//OGLIŠČA
                zanka--;
            }
            zanka=1;
            while(zanka!=0)
            {
                 gl.useProgram(program4);
                model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(-1, 2, -1));//translacija objekta
                var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));
                gl.uniformMatrix4fv(gl.getUniformLocation(program4, "PVM"), false, PVM);
                gl.drawArrays(gl.TRIANGLES, 0, 12*3);//OGLIŠČA
                zanka--;
            }
        }
        //gl.disableVertexAttribArray(0);
        //TLA
        gl.useProgram(program);
        gl.bindBuffer(gl.ARRAY_BUFFER, buffertla);
        gl.enableVertexAttribArray(0);
        gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);//OGLIŠČA * x,y,z



        {
            var proj_matrix = mat4.create();
            mat4.perspective(proj_matrix, glMatrix.toRadian(80), myCanvas.width / myCanvas.height, 0.1, 1000);

            var model_matrix=mat4.identity(mat4.create());

            var view_matrix = mat4.create();//Kamera pogleda (premikanje kamere)
            mat4.identity(view_matrix);
            view_matrix = mat4.translate(mat4.create(), view_matrix, vec3.fromValues(premKamereX, premKamereY, premKamereZ));//premik kamere po x,y,z
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1x), vec3.fromValues(0, 1, 0));//sucemo
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1y), vec3.fromValues(1, 0, 0));
            view_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(kam1z), vec3.fromValues(0, 0, 1));

            //premikanje objektov
            //model_matrix = mat4.translate(mat4.create(), model_matrix, vec3.fromValues(translateX, translateY, translateZ));//translacija objekta
            //model_matrix = mat4.scale(mat4.create(), model_matrix, vec3.fromValues(skalX, skalY, skalZ));//translacija objekta
            //model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleY), vec3.fromValues(0, 1, 0));
            //model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleX), vec3.fromValues(1, 0, 0));
            //model_matrix = mat4.rotate(mat4.create(), model_matrix, glMatrix.toRadian(angleZ), vec3.fromValues(0, 0, 1));

            var PVM = mat4.multiply(mat4.create(), proj_matrix, mat4.multiply(mat4.create(), view_matrix, model_matrix));

            gl.uniformMatrix4fv(gl.getUniformLocation(program, "PVM"), false, PVM);
        }
        gl.drawArrays(gl.TRIANGLES, 0, 6);//OGLIŠČA

        var e = gl.getError();
        if (e)
        {
            //alert("Draw error: " + e);
        }
    }