#include <GL/glut.h>
#include <glui.h>
#include <stdio.h>
#include "triangle.h"


float x[3]={-0.5,0.5,0.0},
y[3]={-0.5,-0.5,0.5},
z[3]={0.0,0.0,0.0};
//Oggetti
triangle t(x,y,z);

//Dichiarazione GLUT
int win;

//Dichiarazioni GLUI
GLUI *winGLUI;
float spinnerColorR=1.0;
float spinnerColorG=0.0;
float spinnerColorB=0.0;
GLUI_Spinner *spinRED;
GLUI_Spinner *spinGREEN;
GLUI_Spinner *spinBLUE;

GLUI_Listbox *colors;
int colori;


void display(void){
//	printf("DISPLAY\n");
	glClearColor(0.0,0.0,0.0,0.0);
	glClear(GL_COLOR_BUFFER_BIT);
	//Funzioni di disegno
	t.Draw();
	glFlush();
	glutSwapBuffers();
}

void reshape(int w, int h){
	
	int tx, ty, tw, th;
	
	
	GLUI_Master.get_viewport_area(&tx, &ty, &tw, &th);
	glViewport(tx, ty, tw,th);
	//GLUI_Master.auto_set_viewport();
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(-1.0,-1.0,1.0,1.0);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
}


void spinCOLOR(int ID){

	switch(ID){
	case 1:	
		t.setColorRGB(spinnerColorR,spinnerColorG,spinnerColorB);
		break;
	case 2:
		t.setColorRGB(spinnerColorR, spinnerColorG, spinnerColorB);
		break;
	case 3:
		t.setColorRGB(spinnerColorR, spinnerColorG, spinnerColorB);
		break;
	default:
		break;
	}

}


void listCOL(int ID){
	
	switch(colori){
	case 1:
			spinnerColorR=1.0;
			spinnerColorG=0.0;
			spinnerColorB=0.0;
			t.setColorRGB(1.0,0.0,0.0);
		break;
	case 2:
			spinnerColorR=0.0;
			spinnerColorG=1.0;
			spinnerColorB=0.0;

			t.setColorRGB(0.0,1.0,0.0);
		break;
	case 3:
			spinnerColorR=0.0;
			spinnerColorG=0.0;
			spinnerColorB=1.0;

			t.setColorRGB(0.0,0.0,1.0);
		break;
	default:
		break;
	}

	GLUI_Master.sync_live_all();
}

void initGLUT_GLUI(){
	glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE);
	win=glutCreateWindow("COLORED Triangle");
	glutDisplayFunc(display);
	GLUI_Master.set_glutReshapeFunc(reshape);
	//CREO L'INTERFACCIA GLUI
	winGLUI = GLUI_Master.create_glui_subwindow(win,GLUI_SUBWINDOW_RIGHT);
	
	spinRED=winGLUI->add_spinner("RED",GLUI_SPINNER_FLOAT,&spinnerColorR,1,spinCOLOR);
	spinGREEN=winGLUI->add_spinner("GREEN",GLUI_SPINNER_FLOAT,&spinnerColorG,2,spinCOLOR);
	spinBLUE=winGLUI->add_spinner("BLUE",GLUI_SPINNER_FLOAT,&spinnerColorB,3,spinCOLOR);

	spinRED->set_speed(0.5);
	spinRED->set_float_limits(0.0,1.0,GLUI_LIMIT_CLAMP);
	spinGREEN->set_float_limits(0.0,1.0,GLUI_LIMIT_CLAMP);
	spinBLUE->set_float_limits(0.0,1.0,GLUI_LIMIT_CLAMP);

	colors=winGLUI->add_listbox("Colori",&colori,1,listCOL);
	colors->add_item(1,"ROSSO");
	colors->add_item(2,"VERDE");
	colors->add_item(3,"BLUE");


	winGLUI->set_main_gfx_window(win);
}


void main(int argc, char *argv[]){
	glutInit(&argc, argv);
		initGLUT_GLUI();
	glutMainLoop();
}