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hello , I need to know how to get the direction from point A to point B

eg. point_direction(0 , 0 , 100,100); would equal 315

x1 y1 x2 y2

how do I compute this ?

Thanks !

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Are you looking for the bearing? You would need to use the inverse trig functions found in the <cmath> header then convert the answers from radians to degrees.

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Are you looking for the bearing? You would need to use the inverse trig functions found in the <cmath> header then convert the answers from radians to degrees.

what would the code be to this ?

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```
#include <cmath>
#include <iostream>
int main()
{
double x1 = 0;
double y1 = 0;
double x2 = 100;
double y2 = 100;
std::cout << 180./3.14159 * atan((x2-x1)/(y2-y1)) << std::endl;
return 0;
}
```

The answer is 45 not 315 going from (0,0), to (100,100), right?

Dave

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`#include <cmath> #include <iostream> int main() { double x1 = 0; double y1 = 0; double x2 = 100; double y2 = 100; std::cout << 180./3.14159 * atan((x2-x1)/(y2-y1)) << std::endl; return 0; }`

The answer is 45 not 315 going from (0,0), to (100,100), right?

Dave

well in graphics everything starts at the top left hand side :icon_smile:

You

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