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PlotView

The main widget for 2D and 3D plotting. Inherits from QRhiWidget and provides hardware-accelerated rendering via Vulkan, Metal, or Direct3D 12.

Synopsis​

namespace Skigen::Plot {

class PlotView : public QRhiWidget {
public:
    PlotView(QWidget* parent = nullptr);

    // 2D line plot
    template <typename DerivedX, typename DerivedY>
    void plot(const Eigen::MatrixBase<DerivedX>& x,
              const Eigen::MatrixBase<DerivedY>& y);

    // 2D scatter plot
    template <typename DerivedX, typename DerivedY>
    void scatter(const Eigen::MatrixBase<DerivedX>& x,
                 const Eigen::MatrixBase<DerivedY>& y);

    // 3D point cloud
    template <typename Derived>
    void pointCloud(const Eigen::MatrixBase<Derived>& vertices);

    // Appearance
    void setLineColor(const Eigen::Vector4f& rgba);
    void setBackgroundColor(const Eigen::Vector4f& rgba);

    // 3D camera
    void setCamera(const Camera3D& camera);

    // Export
    void saveImage(const QString& path);
};

} // namespace Skigen::Plot

Description​

PlotView is the central class of SkigenPlot. It accepts Eigen matrix expressions directly — no manual data conversion needed. Data is interleaved into GPU vertex buffers and rendered using Qt's RHI abstraction layer.

See the Line Plot and Scatter Plot guides for usage examples.