47 lines
923 B
C++
47 lines
923 B
C++
#pragma once
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#ifndef DISK_HPP
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#define DISK_HPP
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#include <glm/glm.hpp>
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#include <glm/gtc/constants.hpp>
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#include "plane.hpp"
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using glm::vec3;
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using glm::normalize;
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using glm::pi;
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class Disk : public Plane {
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public:
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float m_radius;
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Disk(Material * mat = NULL): Plane(mat), m_radius(1.0f) {
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pi2 = 2.0f * pi<float>();
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calculate_inv_area();
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}
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Disk(float x, float y, float z, float nx, float ny, float nz, float _r, Material * mat = NULL): Plane(x, y, z, nx, ny, nz, mat), m_radius(_r) {
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pi2 = 2.0f * pi<float>();
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calculate_inv_area();
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}
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Disk(vec3 _p, vec3 _n, float _r, Material * mat = NULL): Plane(_p, _n, mat), m_radius(_r) {
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pi2 = 2.0f * pi<float>();
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calculate_inv_area();
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}
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virtual ~Disk() { }
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virtual bool intersect(Ray & r, float & t) const;
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virtual vec3 sample_at_surface() const;
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protected:
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virtual void calculate_inv_area();
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private:
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float pi2;
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};
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#endif
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