Print points based on 4 - way symmetry
Console . WriteLine ( String . Format ( " { 0:0.000000 } " , ( x + xc ) ) + " , ▁ " + String . Format ( " { 0:0.000000 } " , ( y + yc ) ) ) ; Console . WriteLine ( String . Format ( " { 0:0.000000 } " , ( - x + xc ) ) + " , ▁ " + String . Format ( " { 0:0.000000 } " , ( y + yc ) ) ) ; Console . WriteLine ( String . Format ( " { 0:0.000000 } " , ( x + xc ) ) + " , ▁ " + String . Format ( " { 0:0.000000 } " , ( - y + yc ) ) ) ; Console . WriteLine ( String . Format ( " { 0:0.000000 } " , ( - x + xc ) ) + " , ▁ " + String . Format ( " { 0:0.000000 } " , ( - y + yc ) ) ) ;