140 lines
2.9 KiB
C++
140 lines
2.9 KiB
C++
#pragma once
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class CVector
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{
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public:
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float x, y, z;
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CVector(void) {}
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CVector(float x, float y, float z) : x(x), y(y), z(z) {}
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#ifdef RWCORE_H
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CVector(const RwV3d &v) : x(v.x), y(v.y), z(v.z) {}
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operator RwV3d (void) const {
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RwV3d vecRw = { this->x, this->y, this->z };
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return vecRw;
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}
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operator RwV3d *(void) {
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return (RwV3d*)this;
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}
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operator RwV3d &(void) {
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return *((RwV3d*)this);
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}
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#endif
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// (0,1,0) means no rotation. So get right vector and its atan
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float Heading(void) const { return Atan2(-x, y); }
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float Magnitude(void) const { return Sqrt(x*x + y*y + z*z); }
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float MagnitudeSqr(void) const { return x*x + y*y + z*z; }
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float Magnitude2D(void) const { return Sqrt(x*x + y*y); }
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float MagnitudeSqr2D(void) const { return x*x + y*y; }
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void Normalise(void) {
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float sq = MagnitudeSqr();
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if(sq > 0.0f){
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float invsqrt = RecipSqrt(sq);
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x *= invsqrt;
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y *= invsqrt;
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z *= invsqrt;
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}else
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x = 1.0f;
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}
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void Normalise(float norm) {
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float sq = MagnitudeSqr();
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float invsqrt = RecipSqrt(norm, sq);
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x *= invsqrt;
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y *= invsqrt;
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z *= invsqrt;
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}
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void Normalise2D(void) {
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float sq = MagnitudeSqr2D();
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float invsqrt = RecipSqrt(sq);
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x *= invsqrt;
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y *= invsqrt;
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}
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const CVector &operator+=(CVector const &right) {
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x += right.x;
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y += right.y;
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z += right.z;
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return *this;
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}
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const CVector &operator-=(CVector const &right) {
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x -= right.x;
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y -= right.y;
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z -= right.z;
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return *this;
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}
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const CVector &operator*=(float right) {
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x *= right;
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y *= right;
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z *= right;
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return *this;
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}
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const CVector &operator/=(float right) {
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x /= right;
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y /= right;
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z /= right;
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return *this;
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}
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CVector operator-() const {
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return CVector(-x, -y, -z);
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}
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const bool operator==(CVector const &right) {
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return x == right.x && y == right.y && z == right.z;
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}
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bool IsZero(void) { return x == 0.0f && y == 0.0f && z == 0.0f; }
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};
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inline CVector operator+(const CVector &left, const CVector &right)
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{
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return CVector(left.x + right.x, left.y + right.y, left.z + right.z);
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}
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inline CVector operator-(const CVector &left, const CVector &right)
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{
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return CVector(left.x - right.x, left.y - right.y, left.z - right.z);
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}
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inline CVector operator*(const CVector &left, float right)
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{
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return CVector(left.x * right, left.y * right, left.z * right);
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}
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inline CVector operator*(float left, const CVector &right)
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{
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return CVector(left * right.x, left * right.y, left * right.z);
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}
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inline CVector operator/(const CVector &left, float right)
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{
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return CVector(left.x / right, left.y / right, left.z / right);
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}
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inline float
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DotProduct(const CVector &v1, const CVector &v2)
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{
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return v1.x*v2.x + v1.y*v2.y + v1.z*v2.z;
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}
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inline const CVector
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CrossProduct(const CVector &v1, const CVector &v2)
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{
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return CVector(
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v1.y*v2.z - v1.z*v2.y,
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v1.z*v2.x - v1.x*v2.z,
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v1.x*v2.y - v1.y*v2.x);
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}
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inline float
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Distance(const CVector &v1, const CVector &v2)
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{
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return (v2 - v1).Magnitude();
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} |