#pragma once
#include "raylib.h"
#include "Planet.hpp"
#include <vector>

// Equal Earth 2D map: per-cell screen positions + the projection/draw helpers.

struct Map2D {
    std::vector<Vector2> pos;   // screen position per cell (fast path)
    std::vector<double>  lon;   // longitude per cell (radians, for seam detection)
    std::vector<double>  lat;   // latitude per cell (radians)
};

void buildMap2D(const Planet& p, Rectangle r, Map2D& m);

double  wrapPi(double l);
// Project a (lon,lat) onto the map with the longitude pan applied.
Vector2 projLonLat(double lon, double lat, double lonOffset, Rectangle r);
Vector2 mapScreen(const Map2D& m, int idx, Rectangle r, double lonOffset);

// lonOffset pans the map east/west (radians); y is unchanged by the pan.
void drawMap2D(const Planet& p, const std::vector<Color>& vc,
               const Map2D& m, Rectangle r, double lonOffset);

// Translucent Live World cloud/rain layer over the 2D map (white -> dark storm where it rains;
// alpha = cloud cover). Same triangle iteration as drawMap2D but blended on top.
void drawWeather2D(const Planet& p, const std::vector<double>& cloud, const std::vector<double>& rain,
                   const Map2D& m, Rectangle r, double lonOffset);