From e43f2e1aac47181136b9c82b189671d9ebefdb15 Mon Sep 17 00:00:00 2001
From: InkSoul <qingci30@163.com>
Date: Sun, 30 Mar 2025 23:15:17 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E=20gltf=E5=8C=85=E5=9B=B4?=
 =?UTF-8?q?=E7=9B=92=E7=B1=BB?=
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---
 src/render/glTFBoundingBox.cpp | 52 ++++++++++++++++++++++++++++++++++
 src/render/glTFBoundingBox.h   | 44 ++++++++++++++++++++++++++++
 src/render/glTFModel.cpp       |  2 +-
 src/render/glTFModel.h         |  2 +-
 src/render/glTFModel_Common.h  |  2 +-
 5 files changed, 99 insertions(+), 3 deletions(-)
 create mode 100644 src/render/glTFBoundingBox.cpp
 create mode 100644 src/render/glTFBoundingBox.h

diff --git a/src/render/glTFBoundingBox.cpp b/src/render/glTFBoundingBox.cpp
new file mode 100644
index 0000000..3c31dc6
--- /dev/null
+++ b/src/render/glTFBoundingBox.cpp
@@ -0,0 +1,52 @@
+#include "glTFBoundingBox.h"
+
+GLTFLOADER_NAMESPACE_BEGIN
+
+
+glTFBoundingBOX::glTFBoundingBOX()
+	: m_isValid(false)
+	, m_Min(glm::vec3(0,0,0))
+	, m_Max(glm::vec3(1,1,1))
+{
+}
+
+glTFBoundingBOX::glTFBoundingBOX(glm::vec3 min, glm::vec3 max)
+	: m_isValid(false)
+	, m_Min(min)
+	, m_Max(max)
+{
+}
+
+glTFBoundingBOX::~glTFBoundingBOX()
+{
+}
+
+glTFBoundingBOX glTFBoundingBOX::getAABB(glm::mat4 matrix)
+{
+	glm::vec3 min = glm::vec3(matrix[3]);
+	glm::vec3 max = min;
+	glm::vec3 v0, v1;
+
+	glm::vec3 right = glm::vec3(matrix[0]);
+	v0 = right * m_Min.x;
+	v1 = right * m_Max.x;
+	min += glm::min(v0, v1);
+	max += glm::max(v0, v1);
+
+	glm::vec3 up = glm::vec3(matrix[1]);
+	v0 = up * m_Min.y;
+	v1 = up * m_Max.y;
+	min += glm::min(v0, v1);
+	max += glm::max(v0, v1);
+
+	glm::vec3 back = glm::vec3(matrix[2]);
+	v0 = back * m_Min.z;
+	v1 = back * m_Max.z;
+	min += glm::min(v0, v1);
+	max += glm::max(v0, v1);
+
+	return glTFBoundingBOX(min, max);
+}
+
+
+GLTFLOADER_NAMESPACE_END
\ No newline at end of file
diff --git a/src/render/glTFBoundingBox.h b/src/render/glTFBoundingBox.h
new file mode 100644
index 0000000..657a692
--- /dev/null
+++ b/src/render/glTFBoundingBox.h
@@ -0,0 +1,44 @@
+#ifndef GLTFBOUNDINGBOX_H
+#define GLTFBOUNDINGBOX_H
+
+#include "glTFModel_Common.h"
+#include <glm/glm.hpp>
+
+GLTFLOADER_NAMESPACE_BEGIN
+
+class glTFBoundingBOX
+{
+public:
+	glTFBoundingBOX();
+	glTFBoundingBOX(glm::vec3 min, glm::vec3 max);
+	~glTFBoundingBOX();
+
+	glTFBoundingBOX getAABB(glm::mat4 matrix);
+
+private:
+
+	glm::vec3 m_Min;
+	glm::vec3 m_Max;
+	bool m_isValid = false;
+};
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+GLTFLOADER_NAMESPACE_END
+
+#endif // !GLTFBOUNDINGBOX_H
+
diff --git a/src/render/glTFModel.cpp b/src/render/glTFModel.cpp
index 671fc70..5ff37d8 100644
--- a/src/render/glTFModel.cpp
+++ b/src/render/glTFModel.cpp
@@ -29,7 +29,7 @@
 	glTFModel::BoundingBox::BoundingBox(glm::vec3 min, glm::vec3 max) : min(min), max(max) {
 	};
 
-	//Axis-Aligned Bounding Box),��� AABB
+	//Axis-Aligned Bounding Box),简称 AABB
 	glTFModel::BoundingBox glTFModel::BoundingBox::getAABB(glm::mat4 m) {
 		glm::vec3 min = glm::vec3(m[3]);
 		glm::vec3 max = min;
diff --git a/src/render/glTFModel.h b/src/render/glTFModel.h
index 65caf3f..3e0b058 100644
--- a/src/render/glTFModel.h
+++ b/src/render/glTFModel.h
@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <assert.h>
 #include <stdio.h>
diff --git a/src/render/glTFModel_Common.h b/src/render/glTFModel_Common.h
index 59a2554..dfe4d56 100644
--- a/src/render/glTFModel_Common.h
+++ b/src/render/glTFModel_Common.h
@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 /// 命名空间宏
 #define GLTFLOADER_NAMESPACE_BEGIN namespace glTFLoader {