inverting-game/Vector3D.c

#include "Vector3D.h"
#include <math.h>

void vectorSet(Vector3D* v, float x, float y, float z) {
    v->x = x;
    v->y = y;
    v->z = z;
}

void vectorSetTo(Vector3D* v1, Vector3D* v2) {
    v1->x = v2->x;
    v1->y = v2->y;
    v1->z = v2->z;
}

void vectorSetToInverse(Vector3D* v1, Vector3D* v2) {
    v1->x = -v2->x;
    v1->y = -v2->y;
    v1->z = -v2->z;
}

void vectorSetMul(Vector3D* v1, Vector3D* v2, float f) {
    v1->x = v2->x * f;
    v1->y = v2->y * f;
    v1->z = v2->z * f;
}

void vectorSetAngles(Vector3D* v, float lengthAngle, float widthAngle) {
    lengthAngle = lengthAngle * M_PI / 180.0f;
    widthAngle = widthAngle * M_PI / 180.0f;
    v->x = cosf(widthAngle) * sinf(lengthAngle);
    v->z = cosf(widthAngle) * cosf(lengthAngle);
    v->y = sinf(widthAngle);
}

void vectorAdd(Vector3D* v1, Vector3D* v2) {
    v1->x += v2->x;
    v1->y += v2->y;
    v1->z += v2->z;
}

void vectorSub(Vector3D* v1, Vector3D* v2) {
    v1->x -= v2->x;
    v1->y -= v2->y;
    v1->z -= v2->z;
}

void vectorMul(Vector3D* v1, float f) {
    v1->x *= f;
    v1->y *= f;
    v1->z *= f;
}

void vectorAddMul(Vector3D* v1, Vector3D* v2, float f) {
    v1->x += v2->x * f;
    v1->y += v2->y * f;
    v1->z += v2->z * f;
}

void vectorCross(Vector3D* v, float x, float y, float z) {
    vectorSet(v, v->y * z - v->z * y, v->z * x - v->x * z, v->x * y - v->y * x);
}

void vectorCrossWith(Vector3D* v1, Vector3D* v2) {
    vectorSet(v1, v1->y * v2->z - v1->z * v2->y, v1->z * v2->x - v1->x * v2->z, v1->x * v2->y - v1->y * v2->x);
}

void vectorNormalize(Vector3D* v) {
    float f = vectorLength(v);
    v->x /= f;
    v->y /= f;
    v->z /= f;
}

float vectorLength(Vector3D* v) {
    return sqrt(v->x * v->x + v->y * v->y + v->z * v->z);
}

float vectorDot(Vector3D* v1, Vector3D* v2) {
    return v1->x * v2->x + v1->y * v2->y + v1->z * v2->z;
}

float vectorDotInverse(Vector3D* v1, Vector3D* v2) {
    return v1->x * (-v2->x) + v1->y * (-v2->y) + v1->z * (-v2->z);
}