boundingBox.h

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2025-2026 Arnis Lektauers
//
// Created by Arnis Lektauers 20.12.2025.
//
#pragma once
 
#include <core/math/vector3.h>
 
namespace visutwin::canvas
{
    class BoundingBox
    {
    public:
        BoundingBox(): _center(0, 0, 0), _halfExtents(0.5f, 0.5f, 0.5f) {}
        BoundingBox(const Vector3& center, const Vector3& halfExtents)
            : _center(center), _halfExtents(halfExtents) {}
 
        const Vector3& center() const { return _center; }
        void setCenter(const Vector3& center) { _center = center; }
 
        void setCenter(float x, float y, float z)
        {
            _center = {x, y, z};
        }
 
        const Vector3& halfExtents() const { return _halfExtents; }
        void setHalfExtents(const Vector3& halfExtents) { _halfExtents = halfExtents; }
 
        void setHalfExtents(float x, float y, float z)
        {
            _halfExtents = {x, y, z};
        }
 
        void setFromTransformedAabb(const BoundingBox& aabb, const Matrix4& m, bool ignoreScale = false);
 
        void add(const BoundingBox& other);
 
    private:
        Vector3 _center;
 
        // Half the distance across the box in each axis
        Vector3 _halfExtents;
 
        // Cached min/max vectors for getMin/getMax (avoid repeated allocations)
        mutable Vector3 _min;
        mutable Vector3 _max;
    };
}