VideoImgViewer类 参考

#include <video_image_viewer.h>

类 VideoImgViewer 继承关系图:

VideoImgViewer 的协作图:

Public 成员函数
	VideoImgViewer (QWidget *parent=nullptr)
	~VideoImgViewer ()

Protected 成员函数
void	initializeGL () override
void	resizeGL (int w, int h) override
void	paintGL () override

友元
class	FixedAspectRatioWidget

详细描述

在文件 video_image_viewer.h 第 28 行定义.

构造及析构函数说明

VideoImgViewer()

VideoImgViewer::VideoImgViewer ( QWidget *  parent = nullptr )

explicit

在文件 video_image_viewer.cc 第 21 行定义.

    : QOpenGLWidget(parent),
      QOpenGLFunctions(),
      is_init_(false),
      mvp_id_(),
      plane_(),
      ortho_camera_(),
      default_image_(nullptr),
      video_image_shader_prog_(nullptr) {}

~VideoImgViewer()

VideoImgViewer::~VideoImgViewer

(

)

在文件 video_image_viewer.cc 第 31 行定义.

                                {
  if (is_init_) {
    is_init_ = false;
 
    makeCurrent();
 
    plane_.Destroy();
    video_image_shader_prog_->destroyed();
    video_image_shader_prog_.reset();
    default_image_.reset();
 
    doneCurrent();
  }
}

成员函数说明

initializeGL()

void VideoImgViewer::initializeGL ( )

overrideprotected

在文件 video_image_viewer.cc 第 46 行定义.

                                  {
  initializeOpenGLFunctions();
 
  glPointSize(1.0f);
  glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 
  QImage noImage;
  if (!noImage.load(tr(":/images/no_image.png"))) {
    std::cout << "--------can not load the default texture------------"
              << std::endl;
    return;
  }
 
  default_image_ = std::make_shared<Texture>();
  if (default_image_ == nullptr || !default_image_->UpdateData(noImage)) {
    std::cout << "--------can not create the default texture------------"
              << std::endl;
    return;
  }
 
  video_image_shader_prog_ = RenderableObject::CreateShaderProgram(
      tr("/apollo/modules/tools/visualizer/shaders/video_image_plane.vert"),
      tr("/apollo/modules/tools/visualizer/shaders/video_image_plane.frag"));
  if (video_image_shader_prog_ == nullptr) {
    return;
  }
 
  plane_.set_texture(default_image_);
  if (!plane_.Init(video_image_shader_prog_)) {
    return;
  }
 
  ortho_camera_.set_near_plane_width(GLfloat(width()));
  ortho_camera_.set_near_plane_height(GLfloat(height()));
 
  ortho_camera_.set_fov(static_cast<float>(height()));
  ortho_camera_.set_camera_mode(AbstractCamera::CameraMode::OrthoMode);
  ortho_camera_.set_position(0.0f, 0.0f, 0.0f);
 
  ortho_camera_.UpdateWorld();
  ortho_camera_.UpdateProjection();
 
  QMatrix4x4 mvp =
      ortho_camera_.projection_matrix() * ortho_camera_.model_view_matrix();
 
  video_image_shader_prog_->bind();
  video_image_shader_prog_->setUniformValue(mvp_id_, mvp);
  video_image_shader_prog_->release();
 
  is_init_ = true;
}

paintGL()

void VideoImgViewer::paintGL ( )

overrideprotected

在文件 video_image_viewer.cc 第 116 行定义.

                             {
  if (is_init_) {
    plane_.Render();
  }
}

resizeGL()

void VideoImgViewer::resizeGL ( int  w, int  h  )

overrideprotected

在文件 video_image_viewer.cc 第 98 行定义.

                                                   {
  glViewport(0, 0, (GLsizei)width, (GLsizei)height);
 
  if (is_init_) {
    ortho_camera_.set_fov(static_cast<float>(height));
    ortho_camera_.set_near_plane_width(GLfloat(width));
    ortho_camera_.set_near_plane_height(GLfloat(height));
    ortho_camera_.UpdateProjection();
 
    QMatrix4x4 mvp =
        ortho_camera_.projection_matrix() * ortho_camera_.model_view_matrix();
 
    video_image_shader_prog_->bind();
    video_image_shader_prog_->setUniformValue(mvp_id_, mvp);
    video_image_shader_prog_->release();
  }
}

友元及相关函数文档

FixedAspectRatioWidget

friend class FixedAspectRatioWidget

friend

在文件 video_image_viewer.h 第 47 行定义.

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该类的文档由以下文件生成:

• modules/tools/visualizer/video_image_viewer.h
• modules/tools/visualizer/video_image_viewer.cc