bgc-c/docs/vector2/swap-eng.md

Swapping

The exchange functions allow two vectors of the same type to exchange coordinate values.

Function for BgcVector2FP32:

inline void bgc_vector2_swap_fp32(BgcVector2FP32* vector1, BgcVector2FP32* vector2);

Function for BgcVector2FP32:

inline void bgc_vector2_swap_fp64(BgcVector2FP64* vector1, BgcVector2FP64* vector2);

The vector1 and vector2 parameters must not be invalid pointers. The NULL (0) value is also considered invalid.

Vector vector1 after calling this function will have the coordinate values that vector vector2 had before calling the function.

And vector vector2 after calling this function will have the same coordinate values that vector vector1 had before calling the function.

Example of use:

#include <stdio.h>
#include <basic-geometry.h>

int main()
{
    BgcVector2FP32 my_vector1, my_vector2;

    bgc_vector2_set_values_fp32(-2, 7, &my_vector1);
    bgc_vector2_set_values_fp32(10, -1, &my_vector2);

    bgc_vector2_swap_fp32(&my_vector1, &my_vector2);

    printf("Vector #1: x1 = %f, x2 = %f\n", my_vector1.x1, my_vector1.x2);
    printf("Vector #2: x1 = %f, x2 = %f\n", my_vector2.x1, my_vector2.x2);

    return 0;
}

Documentation / 2D vectors