Jonas Reith
acc0e5eec9
C++/raylib semi-realistic fantasy/sci-fi planet generator on a fixed icosphere grid (Eulerian: properties flow over fixed cells). World-creation stages: tectonics, continental drift & erosion, hydrology (rivers/lakes), climate (temperature + orographic precipitation), and biome classification. Engine in src/sim (raylib-free, headless-testable), viewer in src/render. See CLAUDE.md and docs/ (design-notes.md, fauna-flora-plan.md = next step). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
24 lines
895 B
C++
24 lines
895 B
C++
#pragma once
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#include "raylib.h"
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#include "Planet.hpp"
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#include <vector>
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// Equal Earth 2D map: per-cell screen positions + the projection/draw helpers.
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struct Map2D {
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std::vector<Vector2> pos; // screen position per cell (fast path)
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std::vector<double> lon; // longitude per cell (radians, for seam detection)
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std::vector<double> lat; // latitude per cell (radians)
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};
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void buildMap2D(const Planet& p, Rectangle r, Map2D& m);
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double wrapPi(double l);
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// Project a (lon,lat) onto the map with the longitude pan applied.
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Vector2 projLonLat(double lon, double lat, double lonOffset, Rectangle r);
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Vector2 mapScreen(const Map2D& m, int idx, Rectangle r, double lonOffset);
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// lonOffset pans the map east/west (radians); y is unchanged by the pan.
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void drawMap2D(const Planet& p, const std::vector<Color>& vc,
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const Map2D& m, Rectangle r, double lonOffset);
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