Method setStencil

src/fl/fx/2d/wave.h:261–263

@brief Select the discrete Laplacian stencil @param s LaplacianStencil::FivePoint (default at SuperSample 1X) or LaplacianStencil::NinePointIsotropic (auto-selected at SuperSample >= 2X; opt-in at 1X) 5-point is faster but anisotropic — ripples can look square-ish on larger grids. 9-point is ~2x reads + ALU per cell but rounder, noticeably so at 16x16+ native grids with gradient coloring. Calling

    /// setSuperSample() calls preserve it instead of re-applying the
    /// multiplier-based default.
    void setStencil(LaplacianStencil s) FL_NOEXCEPT {
        mWaveSim.setStencil(s);
    }

    /// @brief Get the currently active Laplacian stencil
    LaplacianStencil getStencil() const FL_NOEXCEPT {