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XCEngine/docs/api/math/bounds/expand.md
2026-03-20 02:35:15 +08:00

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Bounds::Expand

void Expand(float amount)
void Expand(const Vector3& amount)

扩展包围盒。输入值会被除以 2 后添加到 extents 上(标量扩展时,每个轴的 extents 增加 amount * 0.5f,即实际尺寸增加 amount;向量扩展时,各分量分别处理)。

参数:

  • amount - 扩展量(标量时各方向均匀扩展,向量时各分量分别扩展)

返回: void

线程安全:

复杂度: O(1)

示例:

#include <XCEngine/Math/Bounds.h>
#include <XCEngine/Math/Vector3.h>

using namespace XCEngine::Math;

Bounds bounds(Vector3(0.0f, 0.0f, 0.0f), Vector3(2.0f, 2.0f, 2.0f));
bounds.Expand(1.0f);
// extents becomes (2.0, 2.0, 2.0), size increased by 1 in each direction

bounds.Expand(Vector3(1.0f, 0.0f, 0.0f));
// extents becomes (2.5, 2.0, 2.0), only x extended

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