Обновление документации по векторам и кватернионам

docs/vector2/set-values-eng.md

@@ -1,27 +1,35 @@
 # Setting the coordinates of a two-dimensional vector
 
-You can set the coordinates of vectors either directly or using functions. The functions for setting coordinate values allow you to do this in one line.
+[Русская версия / Russian version](set-values-rus.md)
 
-Function for **BgcVector2FP32**:
+You can set the coordinates of vectors either directly or using functions.
+The functions for setting coordinate values allow you to do this in one line.
+
+Function for **BGC_FP32_Vector2**:
 
 ```c
-inline void bgc_vector2_set_values_fp32(const float x1, const float x2, BgcVector2FP32* to);
+inline void bgc_fp32_vector2_set_values(BGC_FP32_Vector2* const destination, const float x, const float y);
 ```
 
-Function for **BgcVector2FP32**:
+Function for **BGC_FP64_Vector2**:
 
 ```c
-inline void bgc_vector2_set_values_fp64(const double x1, const double x2, BgcVector2FP64* to);
+inline void bgc_fp64_vector2_set_values(BGC_FP64_Vector2* const destination, const double x, const double y);
 ```
 
 Each of these functions is equivalent to the following lines of code:
 
 ```c
-to->x1 = x1;
-to->x2 = x2;
+destination->x = x;
+destination->y = y;
 ```
 
-Invalid pointers should not be passed in the **to** parameter. The NULL (0) value is also considered invalid.
+Valid pointers should pass in the **destination** parameter.
+The NULL (0) value is considered invalid.
+
+This function is good for setting up the initial values of coordinates with
+one-line especially when the values are fixed constants like in the example
+below.
 
 Example of use:
 
@@ -31,11 +39,11 @@ Example of use:
 
 int main()
 {
-    BgcVector2FP32 my_vector;
+    BGC_FP32_Vector2 my_vector;
 
-    bgc_vector2_set_values_fp32(-2, 7, &my_vector);
+    bgc_fp32_vector2_set_values(&my_vector, -2.2f, 7.1f);
 
-    printf("x1 = %f, x2 = %f\n", my_vector.x1, my_vector.x2);
+    printf("x = %f, y = %f\n", my_vector.x, my_vector.y);
 
     return 0;
 }