Program to find the Excenters of a Triangle | Java program for the above approach ; Function to calculate the distance between a pair of points ; Function to calculate the coordinates of the excenters of a triangle ; Length of the sides of the triangle ; Stores the coordinates of the excenters of the triangle ; For I1 ; For I2 ; For I3 ; Print the excenters of the triangle ; Driver code
import java . util . * ; class GFG { static class pair { float first , second ; pair ( float first , float second ) { this . first = first ; this . second = second ; } } static float distance ( int m , int n , int p , int q ) { return ( float ) Math . sqrt ( Math . pow ( n - m , 2 ) + Math . pow ( q - p , 2 ) * 1.0 ) ; } static void Excenters ( int x1 , int y1 , int x2 , int y2 , int x3 , int y3 ) { float a = distance ( x2 , x3 , y2 , y3 ) ; float b = distance ( x3 , x1 , y3 , y1 ) ; float c = distance ( x1 , x2 , y1 , y2 ) ; pair [ ] excenter = new pair [ 4 ] ; excenter [ 1 ] = new pair ( ( - ( a * x1 ) + ( b * x2 ) + ( c * x3 ) ) / ( - a + b + c ) , ( - ( a * y1 ) + ( b * y2 ) + ( c * y3 ) ) / ( - a + b + c ) ) ; excenter [ 2 ] = new pair ( ( ( a * x1 ) - ( b * x2 ) + ( c * x3 ) ) / ( a - b + c ) , ( ( a * y1 ) - ( b * y2 ) + ( c * y3 ) ) / ( a - b + c ) ) ; excenter [ 3 ] = new pair ( ( ( a * x1 ) + ( b * x2 ) - ( c * x3 ) ) / ( a + b - c ) , ( ( a * y1 ) + ( b * y2 ) - ( c * y3 ) ) / ( a + b - c ) ) ; for ( int i = 1 ; i <= 3 ; i ++ ) { System . out . println ( ( int ) excenter [ i ] . first + " ▁ " + ( int ) excenter [ i ] . second ) ; } } public static void main ( String [ ] args ) { int x1 , x2 , x3 , y1 , y2 , y3 ; x1 = 0 ; x2 = 3 ; x3 = 0 ; y1 = 0 ; y2 = 0 ; y3 = 4 ; Excenters ( x1 , y1 , x2 , y2 , x3 , y3 ) ; } }