/*
 * Triangle.cpp
 *
 *  Created on: Apr 10, 2019
 *      Author: johnsontimoj
 */

#include "Triangle.h"
#include <math.h>
#define PI 3.14159265

Triangle::Triangle() : Polygon(){
	set_num_vertices(3);
}
Triangle::Triangle(double l1, double a12, double l2) : Polygon() {
	set_num_vertices(3);
	setTriSAS(l1, a12, l2);
}
Triangle::Triangle(string id, double l1, double a12, double l2) : Polygon(id) {
    set_num_vertices(3);
    setTriSAS(l1, a12, l2);
}
void Triangle::setTriSAS(double l1, double a12, double l2){
	set_s1(l1);
	set_s2(l2);
	set_a12(a12);
}
void Triangle::set_s1(double s){
	side_1_length = s;
	calc_side3();
	calc_a23();
	calc_a31();
}
void Triangle::set_s2(double s){
	side_2_length = s;
	calc_side3();
	calc_a23();
	calc_a31();
}
void Triangle::set_a12(double a){
	angle_12 = a;
	side_3_length = calc_side3();
	angle_23 = calc_a23();
	angle_31 = calc_a31();
}
double Triangle::get_s1(void){
	return side_1_length;
}
double Triangle::get_s2(void){
	return side_2_length;
}
double Triangle::get_s3(void){
	return side_3_length;
}
double Triangle::get_a12(void){
	return angle_12;
}
double Triangle::get_a23(void){
	return angle_23;
}
double Triangle::get_a31(void){
	return angle_31;
}
double Triangle::calc_side3(void){
	return sqrt(get_s1()*get_s1() + get_s2()*get_s2() - 2*get_s1()*get_s2()*cos(PI*get_a12()/180.0));
}
double Triangle::calc_a23(void){
	return (360/(2*PI))*asin(get_s1()*sin(PI*get_a12()/180.0)/get_s3());
}
double Triangle::calc_a31(void){
	return (360/(2*PI))*asin(get_s2()*sin(PI*get_a12()/180.0)/get_s3());
}
double Triangle::calc_perimeter(void){
	return get_s1() + get_s2() + get_s3();
}
double Triangle::get_line_color(void){		// redefined
	return line_color * 2;
}