map-generator/public/assets/js/core/geom.js

// Fonctions géométriques partagées pour le map editor
(function(){
    function axialToPixel(tileSize, q, r) {
        // pointy-top axial coordinates
        const x = tileSize * Math.sqrt(3) * (q + r / 2);
        const y = tileSize * 1.5 * r;
        return { x, y };
    }

    function computeZoom(currentZoom, factor) {
        let z = currentZoom * factor;
        z = Math.max(0.1, Math.min(5, z));
        return z;
    }

    function computePanOffset(offset, dx, dy) {
        return { x: offset.x + dx, y: offset.y + dy };
    }

    window.MG = window.MG || {};
    window.MG.geom = {
        axialToPixel: axialToPixel,
        computeZoom: computeZoom,
        computePanOffset: computePanOffset
    };
})();