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Refactor near_zero method

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This commit is contained in:
Wander_lust
2026-02-17 02:10:44 +05:30
committed by GitHub
parent 726701d65a
commit 3c066309c3
1 changed files with 3 additions and 4 deletions
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include/vec3.h
+3 -4
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@@ -47,7 +47,7 @@ class vec3 {
bool near_zero() const { bool near_zero() const {
// Return true if the vector is close to zero in all dimensions.
auto s = 1e-8; auto s = 1e-8;
return (std::fabs(e[0]) < s) && (std::fabs(e[1]) < s) && (std::fabs(e[2]) < s); return (std::fabs(e[0]) < s) && (std::fabs(e[1]) < s) && (std::fabs(e[2]) < s);
} }
@@ -61,11 +61,10 @@ class vec3 {
} }
}; };
// point3 is just an alias for vec3, but useful for geometric clarity in the code.
using point3 = vec3; using point3 = vec3;
// Vector Utility Functions
inline std::ostream& operator<<(std::ostream& out, const vec3& v) { inline std::ostream& operator<<(std::ostream& out, const vec3& v) {
return out << v.e[0] << ' ' << v.e[1] << ' ' << v.e[2]; return out << v.e[0] << ' ' << v.e[1] << ' ' << v.e[2];
@@ -131,7 +130,7 @@ inline vec3 random_unit_vector() {
inline vec3 random_on_hemisphere(const vec3& normal) { inline vec3 random_on_hemisphere(const vec3& normal) {
vec3 on_unit_sphere = random_unit_vector(); vec3 on_unit_sphere = random_unit_vector();
if (dot(on_unit_sphere, normal) > 0.0) // In the same hemisphere as the normal if (dot(on_unit_sphere, normal) > 0.0)
return on_unit_sphere; return on_unit_sphere;
else else
return -on_unit_sphere; return -on_unit_sphere;