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84 lines
1.5 KiB
84 lines
1.5 KiB
#include "Vector3.h"
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#include <math.h>
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#include "util.h"
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Vector3 Vector3::operator+(const Vector3 & v) const
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{
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return Vector3(x+v.x, y+v.y, z+v.z);
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}
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Vector3 Vector3::operator-(const Vector3 & v) const
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{
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return Vector3(x - v.x, y - v.y, z - v.z);
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}
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Vector3 Vector3::operator*(const Vector3 & v) const
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{
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return Vector3(x*v.x, y*v.y, z*v.z);
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}
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void Vector3::operator*=(float scale)
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{
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x *= scale;
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y *= scale;
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z *= scale;
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}
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Vector3 Vector3::operator/(float scale) const
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{
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return Vector3(x/scale, y/scale, z/scale);
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}
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void Vector3::operator/=(float scale)
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{
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x /= scale;
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y /= scale;
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z /= scale;
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}
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void Vector3::operator=(const Vector3 & v)
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{
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x = v.x;
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y = v.y;
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z = v.z;
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}
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void Vector3::Normalize()
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{
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float magnitude = Magnitude();
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x /= magnitude;
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y /= magnitude;
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z /= magnitude;
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}
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float Vector3::Magnitude()
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{
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return sqrtf(x*x + y*y + z*z);
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}
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Vector3 operator*(float f, const Vector3 & v)
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{
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return Vector3(f*v.x, f*v.y, f*v.z);
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}
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float Dot(const Vector3 & l, const Vector3 & r)
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{
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return l.x * r.x + l.y * r.y + l.z * r.z;
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}
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Vector3 Cross(const Vector3 & l, const Vector3 & r)
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{
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return Vector3(l.y*r.z - l.z*r.y, l.z*r.x - l.x*r.z, l.x*r.y - l.y*r.x);
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}
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Vector3 Reflect(const Vector3 & v, const Vector3 & n)
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{
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return v - 2.0f * (Dot(v, n) * n);
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}
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Vector3 UnitRandomVector3InSphere()
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{
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Vector3 random_vector(srandf(), srandf(), srandf());
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random_vector.Normalize();
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return random_vector;
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}
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