From 3a2d9465ddef7fa888a99a47ed6899fa92088236 Mon Sep 17 00:00:00 2001 From: ayuan9957 <107920784+ayuan9957@users.noreply.github.com> Date: Mon, 18 May 2026 10:50:51 +0800 Subject: [PATCH] fix(editor): resolve sub-node coordinate misalignment via hierarchical basis change --- .../Private/MetaCoreFilamentSceneBridge.cpp | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/Source/MetaCoreRender/Private/MetaCoreFilamentSceneBridge.cpp b/Source/MetaCoreRender/Private/MetaCoreFilamentSceneBridge.cpp index fd88b1a..956a0c7 100644 --- a/Source/MetaCoreRender/Private/MetaCoreFilamentSceneBridge.cpp +++ b/Source/MetaCoreRender/Private/MetaCoreFilamentSceneBridge.cpp @@ -242,9 +242,12 @@ public: if (instance) { filament::math::mat4f localTransform = tm.getTransform(instance); - // 转换为 GLM 矩阵 - glm::mat4 matrix; - std::memcpy(glm::value_ptr(matrix), &localTransform[0][0], sizeof(float) * 16); + glm::mat4 filamentMatrix; + std::memcpy(glm::value_ptr(filamentMatrix), &localTransform[0][0], sizeof(float) * 16); + + glm::mat4 R_minus90X = glm::rotate(glm::mat4(1.0f), glm::radians(-90.0f), {1, 0, 0}); + glm::mat4 R_plus90X = glm::rotate(glm::mat4(1.0f), glm::radians(90.0f), {1, 0, 0}); + glm::mat4 matrix = R_minus90X * filamentMatrix * R_plus90X; // 拆解矩阵 glm::vec3 scale; @@ -517,6 +520,15 @@ private: const auto& transform = gameObject.GetComponent(); glm::mat4 matrix = MetaCoreBuildTransformMatrix(transform); + // 【关键修复】：如果当前 entity 是子节点（即不是顶级映射的 pivotEntity） + // 由于它的父级（assetRoot）带有了 -90X 旋转，我们必须对子节点应用基变换来抵消这个旋转。 + // 公式：L_filament = R(90X) * L_ecs * R(-90X) + if (LoadedAssets_.count(gameObject.GetId()) == 0) { + glm::mat4 R_plus90X = glm::rotate(glm::mat4(1.0f), glm::radians(90.0f), {1, 0, 0}); + glm::mat4 R_minus90X = glm::rotate(glm::mat4(1.0f), glm::radians(-90.0f), {1, 0, 0}); + matrix = R_plus90X * matrix * R_minus90X; + } + tm.setTransform(instance, *reinterpret_cast(glm::value_ptr(matrix))); } }