(1) (x - x1)2
+ (y - y1)2 = r12 |
(2) (x - x2)2
+ (y - y2)2 = r22 |
x2 - 2xx1 + x12
+ y2 -2yy1 + y12 = r12 |
x2 - 2xx2 + x22
+ y2 -2yy2 + y22 = r22 |
(1) - (2) 2x(x2
- x1) + 2y(y2 - y1) + x12 - x22
+ y12 - y22
= r12 - r22 |
|
if x2 - x1 > Epsilon x = ( r12 - r22 - ( 2y(y2 - y1) + x12 - x22 + y12 - y22) ) / 2(x2 - x1) else y = ... | |
Then you replace x within (1) and you solve an equation of the second degree ......piece of cake but ... |