使用中文图例、标签¶

1 vtk使用中文（指定ttf）¶

使用中文的话需要加载中文字体 .ttf 文件。

vtkNew<vtkTextProperty> tprop;
tprop->SetFontFamily(VTK_FONT_FILE); 
tprop->SetFontFile("./font/simhei.ttf");

2 qt vtk 使用中文¶

qrc 中 ttf 文件，vtk 无法直接使用需释放到本地。

DirMake("./font");
QFile::copy(":/font/simhei.ttf", "./font/simhei.ttf");

3 使用¶

3.1 vtk 直接渲染文字¶

vtkTextActor 增加中/英图例（英文自己在ts里加）

    vtkNew<vtkTextActor> model_label ;
    model_label->GetTextProperty()->SetFontFamily(VTK_FONT_FILE);
    model_label->GetTextProperty()->SetFontFile("./font/simhei.ttf");
    QString label_tmp = tr("重构结果");
    model_label->SetInput(label_tmp.toLocal8Bit().data());

3.2 vtk 切片显示/图片显示¶

vtkCornerAnnotation 角标信息增加中/英图例（英文自己在ts里加）

    this->annotation_ = vtkSmartPointer<vtkCornerAnnotation>::New();
    vtkNew<vtkTextProperty> tprop;
    tprop->SetFontFamily(VTK_FONT_FILE);
    tprop->SetFontFile("./font/simhei.ttf");
    this->annotation_->SetTextProperty(tprop);
    // 或者
    /*this->annotation_->GetTextProperty()->SetFontFamily(VTK_FONT_FILE);
    this->annotation_->GetTextProperty()->SetFontFile("./font/simhei.ttf");*/

    QString bottom_left = QString(tr("%1\n切片:%2/%3\n\n\n"))
                          .arg(tag_hash_.value("Series Description"))
                          .arg(time).arg(total_time);
    this->annotation_->SetText(0, bottom_left.toLocal8Bit().data());
    this->renderer_ = vtkSmartPointer<vtkRenderer>::New();
    this->renderer_->AddViewProp(this->annotation_);

3.3 vtk 图表显示¶

vtkChartXY 增加中/英图例（英文自己在ts里加）

    vtkNew<vtkNamedColors> colors;
    vtkColor3d color3d = colors->GetColor3d("light_grey");
    vtkNew<vtkTable> table;
    vtkNew<vtkFloatArray> distance_array, diameter, ref_diameter_array;
    QString vessel = tr("血管直径");
    QString reference = tr("参考直径");
    distance_array->SetName("distance");
    diameter->SetName(vessel.toLocal8Bit().data());
    ref_diameter_array->SetName(reference.toLocal8Bit().data());
    table->AddColumn(distance_array);
    table->AddColumn(diameter);
    table->AddColumn(ref_diameter_array);
    this->chart_ = vtkSmartPointer<vtkChartXY>::New();
    this->line1_ = this->chart_->AddPlot(vtkChart::LINE);
    this->line2_ = this->chart_->AddPlot(vtkChart::LINE);
    this->line1_->SetInputData(table, 0, 1);
    this->line2_->SetInputData(table, 0, 2);
    this->chart_->SetShowLegend(true);
    this->chart_->GetLegend()->GetLabelProperties()->SetFontFamily(VTK_FONT_FILE);
    this->chart_->GetLegend()->GetLabelProperties()->SetFontFile("./font/simhei.ttf");