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XCEngine/docs/api/math/transform/transform-point.md
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1.1 KiB

Transform::TransformPoint

Vector3 TransformPoint(const Vector3& point) const;

将一个点从本地空间变换到世界空间。计算结果为 position + rotation * (scale * point),即先缩放、再旋转、最后平移。

此方法适用于变换顶点位置等考虑平移的点。

参数:

  • point - 本地空间中的点

返回: Vector3 - 世界空间中的变换后点

线程安全: (无锁,非线程安全)

复杂度: O(1)

示例:

#include "XCEngine/Core/Math/Transform.h"
#include "XCEngine/Core/Math/Vector3.h"

using namespace XCEngine::Math;

void TransformPointExample() {
    Transform transform;
    transform.position = Vector3(10.0f, 0.0f, 0.0f);
    transform.rotation = Quaternion::Identity();
    transform.scale = Vector3(2.0f, 2.0f, 2.0f);

    Vector3 localPoint(1.0f, 2.0f, 3.0f);
    Vector3 worldPoint = transform.TransformPoint(localPoint);
}

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