#pragma once

#include <cstdint>
#include <vector>

struct Vertex
{
    float pos[2];
    float uv[2];
};

struct TileRect
{
    float x0;
    float y0;
    float x1;
    float y1;
};

std::vector<TileRect> makeGridTileRects(
    uint32_t cols,
    uint32_t rows,
    float viewportWidth,
    float viewportHeight,
    float gapPixels,
    float targetAspect);

std::vector<Vertex> makeGridLayout(
    uint32_t cols,
    uint32_t rows,
    float viewportWidth,
    float viewportHeight,
    float gapPixels,
    float targetAspect);

void updateGridLayout(
    Vertex* vertices,
    uint32_t cols,
    uint32_t rows,
    float viewportWidth,
    float viewportHeight,
    float gapPixels,
    float targetAspect);

void updateUvForAspectRatio(
    Vertex* vertices,
    uint32_t quadIndex,
    float srcAspect,
    float tileAspect);