Function generateDipShapes

KeyDecoding.js:301–335

(pinSpacing, maxKeyCut, flatSpotWidth, cutDepthOffset, zeroCutOffset)

}

function generateDipShapes(pinSpacing, maxKeyCut, flatSpotWidth, cutDepthOffset, zeroCutOffset) {
    var dipShapes = {};

    for (var cut = 0; cut < maxKeyCut; cut++) {
        var shape = [];
        var centerIndex = Math.floor(pinSpacing / 2);
        var cutDepth = cut * cutDepthOffset;
        var flatHalfWidth = Math.floor(flatSpotWidth / 2);

        for (var i = 0; i < pinSpacing; i++) {
            var distanceFromCenter = Math.abs(i - centerIndex);

            if (cut === 0) {
                if (distanceFromCenter <= flatSpotWidth) {
                    shape[i] = zeroCutOffset;
                } else {
                    shape[i] = 0;
                }
            } else {
                if (distanceFromCenter <= flatHalfWidth) {
                    shape[i] = cutDepth;
                } else {
                    var slopeDistance = distanceFromCenter - flatHalfWidth;
                    var remainingDistance = centerIndex - flatHalfWidth;
                    var depth = cutDepth - Math.floor(slopeDistance * (cutDepth - 1) / remainingDistance);
                    shape[i] = Math.max(1, depth);
                }
            }
        }

        dipShapes[cut] = shape;
    }

    return dipShapes;
}

function drawKeyShape(x, y, width, height, color, pinCount, pins, keyType) {
    var keyConfig = keys[keyType] || {};