Добавление документации по трёхмерным векторам и исправления

docs/vector3/reset-rus.md

@@ -0,0 +1,45 @@
+# Ñáðîñ ñîñòîÿíèÿ òð¸õìåðíîãî âåêòîðà
+
+Ôóíêöèè óñòàíàâëèâàþò çíà÷åíèå 0 âñåì êîîðäèíàòàì òð¸õìåðíûõ âåêòîðîâ.
+
+Ôóíêöèÿ äëÿ **BgcVector3FP32**:
+
+```c
+inline void bgc_vector3_reset_fp32(BgcVector3FP32* vector);
+```
+
+Ôóíêöèÿ äëÿ **BgcVector3FP64**:
+
+```c
+inline void bgc_vector3_reset_fp64(BgcVector3FP64* vector);
+```
+
+Êàæäàÿ èç äàííûõ ôóíêöèè ýêâèâàëåíòíà ñëåäóþùèì ñòðîêàì êîäà:
+
+```c
+vector->x1 = 0;
+vector->x2 = 0;
+vector->x3 = 0;
+```
+
+ äàííûå ôóíêöèè íå ñëåäóåò ïåðåäàâàòü íåêîððåêòíûå óêàçàòåëè. Çíà÷åíèå NULL (0) òàêæå ñ÷èòàåòñÿ íåêîððåêòíûì.
+
+Ïðèìåð ïðèìåíåíèÿ:
+
+```c
+#include <stdio.h>
+#include <basic-geometry.h>
+
+int main()
+{
+    BgcVector3FP32 my_vector;
+
+    bgc_vector3_reset_fp32(&my_vector);
+
+    printf("x1 = %f, x2 = %f, x3 = %f\n", my_vector.x1, my_vector.x2, my_vector.x3);
+
+    return 0;
+}
+```
+
+[Äîêóìåíòàöèÿ](../intro-rus.md) / [2D âåêòîðû](../vector3-rus.md)