draw()

void fl::Fx2dTo1d::draw ( DrawContext context )

overridevirtual

Parameters

now	The current time in milliseconds. Fx writers are encouraged to use this instead of millis() directly as this will more deterministic behavior.

Implements fl::Fx.

Definition at line 21 of file fx2d_to_1d.cpp.hpp.

                                       {
    // Step 1: Render 2D effect to internal grid
    DrawContext grid_context(context.now, fl::span<CRGB>(mGrid.get(), mFx2d->getNumLeds()));
    mFx2d->draw(grid_context);
 
    // Step 2: Sample from grid to 1D output using fl::sample
    const XYMap &xyMap = mFx2d->getXYMap();
    SampleMode mode = static_cast<SampleMode>(mInterpolationMode);
 
    for (u16 i = 0; i < mNumLeds; i++) {
        vec2f pos = mScreenMap[i];
        context.leds[i] = fl::sample(mGrid.get(), xyMap, pos.x, pos.y, mode);
    }
}

References fl::DrawContext::leds, mFx2d, mGrid, mInterpolationMode, fl::Fx::mNumLeds, mScreenMap, fl::DrawContext::now, pos, fl::sample(), and fl::Fx1d::xyMap().

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