Afschatting configuratie

config.php

<?php

    public function config(): array
    {
        // Frequencies mirror the original Pascal implementation:
        // 0.5, 1, 2, and 4 kHz.
        $frequencies = [0.5, 1.0, 2.0, 4.0];

        // Base levels (in dB HL) follow the original
        // Loss array: (30, 40, 50, 60).
        $baseLevels = [
            HearingLossSize::Light->value => 30,
            HearingLossSize::LightModerate->value => 40,
            HearingLossSize::Moderate->value => 50,
            HearingLossSize::ModerateSevere->value => 60,
        ];

        // Shape offsets (in dB) approximate the original profiles
        // ("Oplopend", "Vlak", "Aflopend", "Komvormig") for 0.5, 1, 2, 4 kHz:
        //
        // - Ascending (Oplopend): loss increases towards higher frequencies.
        // - Flat (Vlak): same loss at all frequencies.
        // - Descending (Aflopend): loss decreases towards higher frequencies.
        // - Bowl-shaped (Komvormig): mid / high frequencies differ from low.
        //
        // The actual thresholds per frequency are obtained on the front end as
        // baseLevels[size] + shapeOffsets[shape][index], and then clamped to
        // the chart's Y-axis domain.
        $shapeOffsets = [
            HearingLossShape::Flat->value => [0, 0, 0, 0],
            HearingLossShape::Ascending->value => [-10, 0, 10, 20],
            HearingLossShape::Descending->value => [10, 0, -10, -20],
            HearingLossShape::BowlShaped->value => [-10, 0, -10, -20],
        ];

        return [
            'frequencies' => $frequencies,
            'baseLevels' => $baseLevels,
            'shapeOffsets' => $shapeOffsets,
        ];
    }