连续加载几个模型后报错？

playwww · 发表于 2009-4-15 00:54:18

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
#pragma once
namespace OSGViewer {
osg::ref_ptr<osg::Group> root ;
osg::ref_ptr<osgViewer::Viewer> viewer;
bool renderok;
/// <summary>
/// frmMain 摘要
/// </summary>
public ref class frmMain : public System::Windows::Forms::Form
{
public:
frmMain(void)
{
InitializeComponent();
//
//TODO: 在此处添加构造函数代码
//
}
protected:
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
~frmMain()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::MenuStrip^ menuStrip;
protected:
private: System::Windows::Forms::ToolStripMenuItem^ 文件FToolStripMenuItem;
private: System::Windows::Forms::ToolStripMenuItem^ 打开ToolStripMenuItem;
private: System::Windows::Forms::ToolStripSeparator^ toolStripMenuItem1;
private: System::Windows::Forms::ToolStripMenuItem^ 退出XToolStripMenuItem;
private: System::Windows::Forms::StatusStrip^ statusStrip1;
private: System::Windows::Forms::ToolStripStatusLabel^ toolStripStatusLabel1;
private: System::Windows::Forms::OpenFileDialog^ openFileDialog1;
private:
/// <summary>
/// 必需的设计器变量。
/// </summary>
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
void InitializeComponent(void)
{
System::ComponentModel::ComponentResourceManager^ resources = (gcnew System::ComponentModel::ComponentResourceManager(frmMain::typeid));
this->menuStrip = (gcnew System::Windows::Forms::MenuStrip());
this->文件FToolStripMenuItem = (gcnew System::Windows::Forms::ToolStripMenuItem());
this->打开ToolStripMenuItem = (gcnew System::Windows::Forms::ToolStripMenuItem());
this->toolStripMenuItem1 = (gcnew System::Windows::Forms::ToolStripSeparator());
this->退出XToolStripMenuItem = (gcnew System::Windows::Forms::ToolStripMenuItem());
this->statusStrip1 = (gcnew System::Windows::Forms::StatusStrip());
this->toolStripStatusLabel1 = (gcnew System::Windows::Forms::ToolStripStatusLabel());
this->openFileDialog1 = (gcnew System::Windows::Forms::OpenFileDialog());
this->menuStrip->SuspendLayout();
this->statusStrip1->SuspendLayout();
this->SuspendLayout();
//
// menuStrip
//
this->menuStrip->Items->AddRange(gcnew cli::array< System::Windows::Forms::ToolStripItem^ >(1) {this->文件FToolStripMenuItem});
this->menuStrip->Location = System::Drawing::Point(0, 0);
this->menuStrip->Name = L"menuStrip";
this->menuStrip->Size = System::Drawing::Size(632, 24);
this->menuStrip->TabIndex = 0;
this->menuStrip->Text = L"menuStrip";
//
// 文件FToolStripMenuItem
//
this->文件FToolStripMenuItem->DropDownItems->AddRange(gcnew cli::array< System::Windows::Forms::ToolStripItem^ >(3) {this->打开ToolStripMenuItem,
this->toolStripMenuItem1, this->退出XToolStripMenuItem});
this->文件FToolStripMenuItem->Name = L"文件FToolStripMenuItem";
this->文件FToolStripMenuItem->Size = System::Drawing::Size(57, 20);
this->文件FToolStripMenuItem->Text = L"文件(&F)";
//
// 打开ToolStripMenuItem
//
this->打开ToolStripMenuItem->Name = L"打开ToolStripMenuItem";
this->打开ToolStripMenuItem->Size = System::Drawing::Size(152, 22);
this->打开ToolStripMenuItem->Text = L"打开(&O)";
this->打开ToolStripMenuItem->Click += gcnew System::EventHandler(this, &frmMain::打开ToolStripMenuItem_Click);
//
// toolStripMenuItem1
//
this->toolStripMenuItem1->Name = L"toolStripMenuItem1";
this->toolStripMenuItem1->Size = System::Drawing::Size(149, 6);
//
// 退出XToolStripMenuItem
//
this->退出XToolStripMenuItem->Name = L"退出XToolStripMenuItem";
this->退出XToolStripMenuItem->Size = System::Drawing::Size(152, 22);
this->退出XToolStripMenuItem->Text = L"退出(&X)";
this->退出XToolStripMenuItem->Click += gcnew System::EventHandler(this, &frmMain::退出XToolStripMenuItem_Click);
//
// statusStrip1
//
this->statusStrip1->Items->AddRange(gcnew cli::array< System::Windows::Forms::ToolStripItem^ >(1) {this->toolStripStatusLabel1});
this->statusStrip1->Location = System::Drawing::Point(0, 428);
this->statusStrip1->Name = L"statusStrip1";
this->statusStrip1->Size = System::Drawing::Size(632, 22);
this->statusStrip1->TabIndex = 1;
this->statusStrip1->Text = L"statusStrip1";
//
// toolStripStatusLabel1
//
this->toolStripStatusLabel1->Name = L"toolStripStatusLabel1";
this->toolStripStatusLabel1->Size = System::Drawing::Size(227, 17);
this->toolStripStatusLabel1->Text = L"Windows 窗体应用程序+ OSG 制作:王毫安";
//
// openFileDialog1
//
this->openFileDialog1->Filter = L"ive文件|*.ive|osg文件|*.osg|所有文件|*.*";
//
// frmMain
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 12);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(632, 450);
this->Controls->Add(this->statusStrip1);
this->Controls->Add(this->menuStrip);
this->Icon = (cli::safe_cast<System::Drawing::Icon^ >(resources->GetObject(L"$this.Icon")));
this->MainMenuStrip = this->menuStrip;
this->Name = L"frmMain";
this->Text = L"OSG模型浏览器";
this->Load += gcnew System::EventHandler(this, &frmMain::frmMain_Load);
this->menuStrip->ResumeLayout(false);
this->menuStrip->PerformLayout();
this->statusStrip1->ResumeLayout(false);
this->statusStrip1->PerformLayout();
this->ResumeLayout(false);
this->PerformLayout();
}
#pragma endregion
#pragma region 自定义函数
private:
// System::String转换为std::string
std::string ConvertToString(System::String^ str)
{
int q=(int)System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(str);
char* p=(char*)q;
return std::string(p);
}
// 渲染
static void render(void* ptr)
{
osgViewer::Viewer* viewer = (osgViewer::Viewer*)ptr;
while (!viewer->done())
{
viewer->frame();
}
renderok = true;
_endthread();
}
// 初始化
void InitViewer()
{
// Set window traits and gc
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData( (HWND)this->Handle.ToPointer() );
traits->x = 0;
traits->y = 0;
traits->width = this->ClientSize.Width;
traits->height = this->ClientSize.Height;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->inheritedWindowData = windata;
traits->setInheritedWindowPixelFormat = true;
osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits.get());
// Create camera
osg::ref_ptr<osg::Camera> camera;
camera = new osg::Camera;
camera->setGraphicsContext(gc);
camera->setViewport(new osg::Viewport(traits->x, traits->y, traits->width, traits->height));
// Create viewer
viewer = new osgViewer::Viewer;
viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
viewer->setCameraManipulator(new osgGA::TrackballManipulator);
viewer->addSlave(camera.get());
// 快捷键 1;2;3;4 四种动画模式
osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
keyswitchManipulator->addMatrixManipulator( '3', "Drive", new osgGA::DriveManipulator() );
keyswitchManipulator->addMatrixManipulator( '4', "Terrain", new osgGA::TerrainManipulator() );
viewer->setCameraManipulator( keyswitchManipulator.get() );
viewer->addEventHandler(new osgViewer::StatsHandler);
// Set root node of the scene
root = new osg::Group;
viewer->setSceneData(root.get());
viewer->realize();
// Create a thread for the simulation loop
renderok = false;
_beginthread(&render, 0, viewer);
}
// 加载模型文件
void LoadModel(String^ fileName)
{
// 如果Viewer窗口关闭，则重新初始化Viewer窗口
if(viewer->done())
{
InitViewer();
}
//载入模型
osg::ref_ptr<osg::Node> model;
model= osgDB::readNodeFile( ConvertToString(fileName) );
if( !model ) return;
viewer->setSceneData( model.get() );
viewer->realize();
}
#pragma endregion
private: System::Void 打开ToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
if(openFileDialog1->ShowDialog() == Windows::Forms::DialogResult::OK)
{
try
{
LoadModel(openFileDialog1->FileName);
}
catch(...)
{
MessageBox::Show("模型文件打开失败！","错误",MessageBoxButtons::OK,MessageBoxIcon::Error);
}
}
}
private: System::Void frmMain_Load(System::Object^ sender, System::EventArgs^ e) {
// 初始化Viewer窗口
InitViewer();
}
private: System::Void 退出XToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
// 退出
this->Close();
}
};
}

复制代码

我用windows 窗体应用程序做的osg模型浏览器。连续打开6、7个模型后就报error.我估计是void LoadModel(String^ fileName)函数有问题，应该怎么优化？？？？？？？？？

[ 本帖最后由 playwww 于 2009-4-15 00:56 编辑 ]

array · 发表于 2009-4-15 09:02:48

建议不要每次都改变Viewer里面getSceneData的值，因为是多线程模式，反复realize()可能会有危险。推荐给Viewer设置一个new Group作为根节点，然后用addChild，setChild来加载模型。

此外楼主是用托管来实现C#与OSG的嵌合的吧？期待楼主能写一篇简单的教程，让大家都从中获益，

毕竟国内的.NET开发者也占了相当一部分。当然前提是有空余的时间，不必强求~~

playwww · 发表于 2009-4-15 09:27:47

我主要想用c++/CLR使用OSG,这样界面的部分就不用愁了，托管和非托管混合编程。MFC做界面太愁人了。
我测试的方法如下：
1、新建项目->Visual C++->CLR->Window窗体应用程序
2、在工具箱里拖个菜单到默认生成的窗体Form1上，建个【文件】->【打开】菜单项
双击写如下代码（引用本论坛代码），
private: System::Void 打开ToolStripMenuItem_Click(System::Object^  sender, System::EventArgs^  e) {
osg::ref_ptr<osg::Group> root = new osg::Group;
      osgViewer::Viewer viewer;
      viewer.setSceneData( osgDB::readNodeFile( "cow.osg" ) );
      viewer.run();
}
3、打开 stdafx.h 加入代码如下：
#include <osg/ref_ptr>
#include <osg/Group>
#include <osgViewer/Viewer>
#include <osgDB/ReadFile>
#include <iostream>
4、以上部分没什么特殊的，最主要的是修改项目属性。
(1)跟例子项目的属性配置一样。附加包含目录、附加库目录、附加依赖项等都照例子的改；
(2)OSG例子都不带【预编译头】,这里一定得保持默认带的，要不然编译慢4你；
原因看这个（http://www.cnblogs.com/hesicong/articles/1078366.html）
(3)这步最主要，改【配置属性】->【常规】公告语言运行库支持：公共语言运行库支持(/clr);
这样托管非托管代码一起编译拉。
参考：http://hi.baidu.com/feifei0730/b ... 27aaef38012f66.html
(4)要是编译时提示超过了 PCH 的虚拟内存范围，修改如下
【配置属性】->【C/C++】->【命令行】最下面的附加选项填入 -Zm116
编译应该ok拉
运行，点菜单打开，就会出现闪光牛拉。
这回可以用托管组件做界面了，估计照s99做的mfc模型浏览器，也能出个.net版了。

模型浏览器的源码我发这里啦，斑竹帮忙改改。
http://www.vrchina.net/vr/viewthread.php?tid=10065&highlight=%2Bplaywww

array · 发表于 2009-4-15 10:18:29

好的，多谢。有空我看一下。也欢迎楼主在教程区发文，大家共享

连续加载几个模型后报错？

联系我们