"use strict";

const FrameMaterialDebug = (function(){

    const FrameMaterialDebug = function(){

        const face_cache = {},
              edge_cache = {};

        /**
         * Retorna el material de caras sólidas para la distancia al piso actual.
         * @param {number} dist - Distancia en pisos |model.y - current_floor|
         */
        this.get_face_material = dist => {
            const key = String(dist);

            if(!face_cache[key]){
                // Piso activo: 0.55 de opacidad; pisos lejanos: decae progresivamente
                const opacity = dist === 0 ? 0.55 : Math.max(0.08, 0.35 / (dist * 1.5));

                face_cache[key] = new THREE.MeshBasicMaterial({
                    color       : dist === 0 ? 0xf1f5f9 : 0x94a3b8, // Blanco roto en foco, gris azulado fuera
                    transparent : true,
                    opacity     : opacity,
                    depthWrite  : false
                });
            }

            return face_cache[key];
        };

        /**
         * Retorna el material de aristas para la distancia al piso actual.
         * @param {number} dist - Distancia en pisos |model.y - current_floor|
         */
        this.get_edge_material = dist => {
            const key = String(dist);

            if(!edge_cache[key]){
                const opacity = dist === 0 ? 1.0 : Math.max(0.15, 0.6 / (dist * 1.4));

                edge_cache[key] = new THREE.LineBasicMaterial({
                    color       : dist === 0 ? 0xffffff : 0xcbd5e1, // Blanco brillante en foco
                    transparent : true,
                    opacity     : opacity,
                    depthWrite  : false
                });
            }

            return edge_cache[key];
        };

        this.reset = () => {
            for(const key in face_cache){
                if(face_cache[key]){
                    face_cache[key].dispose();
                    delete face_cache[key];
                }
            }
            for(const key in edge_cache){
                if(edge_cache[key]){
                    edge_cache[key].dispose();
                    delete edge_cache[key];
                }
            }
        };

    };

    return FrameMaterialDebug;
})();