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41 lines
1.2 KiB
41 lines
1.2 KiB
2 days ago
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#pragma once
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#include <base/subface.hpp>
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#include <primitive_descriptor.h>
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namespace internal
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{
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// local: a sphere with center at (0, 0, 0) and radius 1
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// u: planar angle from x-axis to z-axis
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// v: polar angle from xz-plane to y-axis
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// EDIT: recap v from [-pi/2, pi/2] to [0, pi]
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struct sphere_face_t final : subface {
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const sphere_descriptor_t* geometry_ptr = nullptr;
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const sphere_descriptor_t* get_geometry_ptr() const
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{
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printf("[WARNING] sphere_face_t::descriptor() called, but sphere has no descriptor!\n");
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return nullptr;
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}
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};
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} // namespace internal
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namespace detail
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{
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template <>
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struct hasher<internal::sphere_face_t> {
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size_t operator()(const internal::sphere_face_t& subface) const { return hash_funcs(subface.local_to_world); }
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};
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template <>
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struct eq_compare<internal::sphere_face_t> {
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bool operator()(const internal::sphere_face_t& lhs, const internal::sphere_face_t& rhs) const
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{
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//return eq_funcs(lhs.local_to_world, rhs.local_to_world);
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constexpr double eps = 1e-12;
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bool matrix_eq = lhs.world_to_local.isApprox(rhs.world_to_local, eps);
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return matrix_eq;
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}
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};
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} // namespace detail
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