21 lines
532 B
C++
21 lines
532 B
C++
#pragma once
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#ifndef SAMPLING_HPP
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#define SAMPLING_HPP
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#include <glm/vec2.hpp>
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#include <glm/vec3.hpp>
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using glm::vec2;
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using glm::vec3;
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extern const float PDF;
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extern float random01();
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extern vec2 sample_pixel(int i, int j, float w, float h, float a_ratio, float fov);
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extern void create_coords_system(const vec3 &n, vec3 &nt, vec3 &nb);
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extern vec3 sample_hemisphere(const float r1, float r2);
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extern void rotate_sample(vec3 & sample, const vec3 & n);
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extern vec3 sample_sphere(const vec3 center, const float radius);
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#endif
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