完成UV对齐

samples/api/texture_loading/texture_loading.cpp

@@ -9,6 +9,8 @@
 	#include <string>
 #endif
 
+using namespace std;
+
 TextureLoading::TextureLoading()
 {
 	zoom = -1.f;
@@ -570,7 +572,7 @@ void TextureLoading::build_command_buffers()
 
 		
 
-		draw_point_cloud(draw_cmd_buffers[i]);
+		//draw_point_cloud(draw_cmd_buffers[i]);
 		//draw_point_cloud_line(draw_cmd_buffers[i]);
 
 
@@ -622,6 +624,35 @@ void TextureLoading::draw()
 #include <unordered_map>
 
 
+bool TextureLoading::LoadOBJ_test(const std::string& filename, std::vector<float>& temp_positions)
+{
+	std::ifstream file(filename);
+	if (!file.is_open()) {
+		return false;
+	}
+	temp_positions.clear();
+	std::string line;
+	while (std::getline(file, line)) {
+		// 跳过空行和注释行
+		if (line.empty() || line[0] == '#') {
+			continue;
+		}
+
+		std::istringstream iss(line);
+		std::string type;
+		iss >> type;
+
+		if (type == "v") { // 顶点位置
+			float x, y, z;
+			iss >> x >> y >> z;
+			temp_positions.push_back(x);
+			temp_positions.push_back(y);
+			temp_positions.push_back(z);
+		}
+	}
+	file.close();
+}
+
 bool TextureLoading::LoadOBJ(const std::string& filename,
 	std::vector<TextureLoadingVertexStructure>& vertices,
 	std::vector<uint32_t>& indices) {
@@ -661,7 +692,7 @@ bool TextureLoading::LoadOBJ(const std::string& filename,
 			float u, v;
 			iss >> u >> v;
 			temp_texcoords.push_back(u);
-			temp_texcoords.push_back(v);
+			temp_texcoords.push_back(1-v);
 		}
 		else if (type == "vn") { // 法线
 			float nx, ny, nz;
@@ -758,6 +789,7 @@ bool TextureLoading::LoadOBJ(const std::string& filename,
 			uint32_t newIndex = static_cast<uint32_t>(vertices.size());
 			vertices.push_back(vertex);
 			indices.push_back(newIndex);
+			obj_vertices_map[newIndex] = posIndex;
 			vertexMap[vertexKey] = newIndex;
 		}
 	}
@@ -1627,7 +1659,7 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 		return false;
 	}
 
-	myFloatValue = 1.0f;
+	myFloatValue = 1.5f;
 
 	// --- 加载前景纹理 (示例) ---
 	int    width = 640;
@@ -1720,23 +1752,36 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 
 
 #ifdef _WIN32
-	if (LoadOBJ("assets/face_with_uv.obj", obj_vertices, obj_indices))
+	LoadOBJ("assets/DemoHead.obj", obj_vertices, obj_indices);
+	LoadOBJ_test("assets/face.obj", positions_test);
 #else
-	if (LoadOBJ("/sdcard/Android/data/com.khronos.vulkan_samples/files/assets/face_with_uv.obj", obj_vertices, obj_indices))
+	LoadOBJ("/sdcard/Android/data/com.khronos.vulkan_samples/files/assets/face_with_uv.obj", obj_vertices, obj_indices);
 #endif // _WIN32
-	{
 	
-		std::cout << "成功加载OBJ文件" << std::endl;
-		std::cout << "顶点数量: " << obj_vertices.size() << std::endl;
-		std::cout << "索引数量: " << obj_indices.size() << std::endl;
-	}
-	else {
-		std::cout << "加载OBJ文件失败" << std::endl;
-	}
 
 	generate_quad();
 	prepared = true;
 
+	for (int i = 0; i < obj_vertices.size(); ++i)
+	{
+		int face_index = obj_vertices_map[i];
+		float x = positions_test[face_index * 3 + 0];
+		float y = positions_test[face_index * 3 + 1];
+		float z = positions_test[face_index * 3 + 2];
+
+		float obj_x = obj_vertices[i].pos[0];
+		float obj_y = obj_vertices[i].pos[1];
+		float obj_z = obj_vertices[i].pos[2];
+
+		//cout << "index: " << i << " face_index:" << face_index << " diff_x:" << (x - obj_x) << " diff_y:" << (y - obj_y) << " diff_z:" << (z - obj_z) << endl;
+		obj_vertices[i].pos[0] = x;
+		obj_vertices[i].pos[1] = y;
+		obj_vertices[i].pos[2] = z;
+	}
+
+	auto vertex_buffer_size = vkb::to_u32(obj_vertices.size() * sizeof(TextureLoadingVertexStructure));
+	vertex_buffer->update(obj_vertices.data(), vertex_buffer_size);
+
 	update_uniform_buffers_point(47, -0.5, -0.51, 0, 1, 1, 1, 0, 0, 0, 0, 0, -1);
 	//start();
 	return true;
@@ -1835,11 +1880,16 @@ void ReceiveFacePoint(float* pos, int pointCount, int width, int height)
 
 void TextureLoading::update_face_vertex_buffer(float* pos, int pointCount)
 {
-	for (int i = 0; i < pointCount; ++i)
+	for (int i = 0; i < obj_vertices.size(); ++i)
 	{
-		obj_vertices[i].pos[0] = pos[i * 3 + 0];
-		obj_vertices[i].pos[1] = pos[i * 3 + 1];
-		obj_vertices[i].pos[2] = pos[i * 3 + 2];
+		int face_index = obj_vertices_map[i];
+		float x = positions_test[face_index * 3 + 0];
+		float y = positions_test[face_index * 3 + 1];
+		float z = positions_test[face_index * 3 + 2];
+
+		obj_vertices[i].pos[0] = x;
+		obj_vertices[i].pos[1] = y;
+		obj_vertices[i].pos[2] = z;
 	}
 
 	auto vertex_buffer_size = vkb::to_u32(obj_vertices.size() * sizeof(TextureLoadingVertexStructure));