57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// =============================================
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// Aster: nodes.h
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// Copyright (c) 2020-2024 Anish Bhobe
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// =============================================
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#pragma once
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#include "global.h"
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#include "EASTL/vector.h"
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struct Nodes
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{
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struct Transform
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{
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mat4 m_GlobalTransforms;
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mat4 m_NormalTransforms;
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explicit Transform(const mat4 &transform)
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: m_GlobalTransforms(transform)
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, m_NormalTransforms(transpose(inverse(mat3{transform})))
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{
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}
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Transform &
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operator=(const mat4 &transform)
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{
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m_GlobalTransforms = transform;
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m_NormalTransforms = transpose(inverse(mat3{transform}));
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return *this;
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}
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};
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eastl::vector<mat4> m_Transforms;
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eastl::vector<Transform> m_GlobalTransforms;
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/// Parents are also used for bookkeeping
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eastl::vector<u32> m_Parents_;
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bool m_Dirty = true;
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constexpr static u32 ROOT_BIT = 1u << 31;
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constexpr static u32 DIRTY_BIT = 1u << 30;
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constexpr static u32 PARENT_MASK = ~(ROOT_BIT | DIRTY_BIT);
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u32 Add(const mat4 &transform, const i32 parent = -1);
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[[nodiscard]] const mat4 &Get(const u32 index) const;
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void Set(const u32 index, const mat4 &transform);
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[[nodiscard]] u32 Count() const;
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[[nodiscard]] const mat4 &operator[](const u32 index) const;
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[[nodiscard]] mat4 &operator[](const u32 index);
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[[nodiscard]] usize GetGlobalTransformByteSize() const;
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[[nodiscard]] const Transform *GetGlobalTransformPtr() const;
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bool Update();
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};
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