init()

void fl::WaveSimulation2D::init	(	u32	width,
		u32	height,
		SuperSample	factor,
		float	speed,
		int	dampening )

Definition at line 42 of file wave_simulation.cpp.hpp.

                                                                     {
    mOuterWidth = width;
    mOuterHeight = height;
    mMultiplier = static_cast<u32>(factor);
    mSim.reset(); // clear out memory first.
    u32 w = width * mMultiplier;
    u32 h = height * mMultiplier;
    mSim = fl::make_unique<WaveSimulation2D_Real>(w, h, speed, dampening);
    // Auto-select the 9-point isotropic Laplacian when super-sampling is
    // active: the 5-point stencil's anisotropy (square-ish ripples) is
    // invisible at the native LED-grid resolution but becomes obvious
    // at 2x and higher super-sample factors. The 9-point form costs ~2x
    // reads + ALU per cell but the user has already opted into more CPU
    // by requesting super-sampling.
    if (mMultiplier >= 2) {
        mSim->setStencil(LaplacianStencil::NinePointIsotropic);
    }
    // Only allocate change grid if it's enabled (saves memory when disabled)
    if (mUseChangeGrid) {
        mChangeGrid.reset(w, h);
    }
    // Extra frames are needed because the simulation slows down in
    // proportion to the supersampling factor.
    mExtraFrames = u8(factor) - 1;
}

References dampening(), fl::FL_NO_EXCEPT, fl::height, fl::adl_barrier::make_unique(), mChangeGrid, mExtraFrames, mMultiplier, mOuterHeight, mOuterWidth, mSim, mUseChangeGrid, fl::NinePointIsotropic, speed, and fl::width.

Referenced by setSuperSample().

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