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>
20 lines
869 B
C++
20 lines
869 B
C++
#pragma once
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#include "raylib.h"
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#include "Vec3.hpp"
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#include "Planet.hpp"
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// Mouse-picking helpers: ray from the 3D viewport, sphere intersection, nearest
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// cell to a direction, and angular distance between two unit directions.
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// Custom camera ray for the 3D viewport (GetScreenToWorldRay assumes the full
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// screen; the globe occupies only the top-left quadrant).
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Vec3 rayDirFromMouse(Vector3 pos, Vector3 target, float fovyDeg,
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float mx, float my, float vw, float vh);
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bool raySphere(Vec3 o, Vec3 d, double R, Vec3& hitUnit);
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int nearestCell(const Planet& p, const Vec3& dir);
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double angBetween(const Vec3& a, const Vec3& b);
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// Rotate v by `deg` degrees CCW about the world +Z axis (matches rlRotatef(deg,0,0,1)).
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// Used for the axial-tilt transform: +tilt maps model->world, -tilt world->model.
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Vec3 rotateZ(const Vec3& v, double deg);
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