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using System.Diagnostics;
using System.Numerics;
using ArcaneLibs;
using ArcaneLibs.Extensions;
using LibMatrix.EventTypes.Spec;
using LibMatrix.Utilities.Bot.Interfaces;
namespace Jenny.Commands;
public class ImgCommand : ICommand {
public string Name { get; } = "img";
public string[]? Aliases { get; } = [];
public string Description { get; }
public bool Unlisted { get; } = true;
public async Task Invoke(CommandContext ctx) {
int count = 1;
if (ctx.Args is { Length: 1 })
int.TryParse(ctx.Args[0], out count);
for (var i = 0; i < count; i++) {
new Thread(async () => {
var bigNoise = GenerateHeightMap(5000, 2000);
await ctx.Room.SendMessageEventAsync(new RoomMessageEventContent("m.image", "src_noise.png") {
Url = await ctx.Homeserver.UploadFile("data.png", await Float2DArrayToPng(bigNoise), "image/png"),
FileInfo = new() {
Width = bigNoise.GetWidth(),
Height = bigNoise.GetHeight()
}
});
}).Start();
}
}
public async Task<byte[]> Float2DArrayToPng(float[,] data) {
//dump heightmap as PPM
Console.WriteLine($"{DateTime.Now} Converting to PNG");
var width = data.GetLength(1);
var height = data.GetLength(0);
//convert ppm to png with ffmpeg
var process = new Process {
StartInfo = new ProcessStartInfo {
// FileName = "/nix/store/4hz763c5w2hnzm55ll5vgfgmrr6i9kgg-imagemagick-7.1.1-28/bin/convert",
FileName = "convert",
Arguments = $"ppm:- png:-",
UseShellExecute = false,
RedirectStandardInput = true,
RedirectStandardOutput = true
}
};
process.Start();
await process.StandardInput.WriteLineAsync($"P2\n{width} {height}\n255");
for (var i = 0; i < height; i++) {
for (var j = 0; j < width; j++) {
await process.StandardInput.WriteAsync($"{(int)(data[i, j] * 255)} ");
}
// ppm.AppendLine();
}
await process.StandardInput.FlushAsync();
process.StandardInput.Close();
await using var ms = new MemoryStream();
await process.StandardOutput.BaseStream.CopyToAsync(ms);
ms.Position = 0;
Console.WriteLine($"{DateTime.Now} Converted to PNG");
return ms.ToArray();
}
public float[,] GenerateHeightMap(int width, int height) {
var rnd = new Random();
var bigNoiseVector3 = new Vector3[height, width];
for (var y = 0; y < bigNoiseVector3.GetLength(0); y++) {
for (var x = 0; x < bigNoiseVector3.GetLength(1); x++) {
bigNoiseVector3[y, x] = new Vector3(0, 0, 0);
}
}
bigNoiseVector3[0, 0] = new Vector3(rnd.NextSingle(), rnd.NextSingle(), rnd.NextSingle());
var last = bigNoiseVector3[0, 0];
for (var y = 0; y < bigNoiseVector3.GetLength(0); y++) {
if (y > 0) break;
for (var x = 0; x < bigNoiseVector3.GetLength(1); x++) {
float currentX = x;
float currentY = y;
int steps = 0;
int maxSteps = 1000;
while (steps++ < maxSteps) {
if (currentX < 0) break;
if (currentY < 0) break;
if (currentX > bigNoiseVector3.GetWidth() - 1) break;
if (currentY > bigNoiseVector3.GetHeight() - 1) break;
var current = bigNoiseVector3[(int)currentY, (int)currentX];
// if (current is {X: 0f, Y: 0f, Z: 0f}) {
// bigNoiseVector3[currentY, currentX] = current = new Vector3(rnd.NextSingle(), rnd.NextSingle(), rnd.NextSingle());
// }
current = new(last.X, last.Y, last.Z);
var diff = new Vector3(
MathUtil.Map(rnd.NextSingle(), 0f, 1f, -0.2f, 0.2f),
MathUtil.Map(rnd.NextSingle(), 0f, 1f, -0.2f, 0.2f),
-0.1f
);
current += diff;
bigNoiseVector3[(int)currentY, (int)currentX] = current;
// Console.WriteLine("{0}/{1}={2} (+{3})", currentX, currentY, current, diff);
currentX += current.X;
currentY += current.Y;
// if (current.X > 0.666f) currentX++;
// else if (current.X < 0.333f) currentX--;
// if (current.Y > 0.666f) currentY++;
// else if (current.Y < 0.333f) currentY--;
last = current;
}
}
}
var bigNoise = new float[height, width];
for (var i = 0; i < bigNoise.GetLength(0); i++) {
for (var j = 0; j < bigNoise.GetLength(1); j++) {
// bigNoise[i, j] = (float) (bigNoiseVector[i, j].Length() / Math.Sqrt(2));
bigNoise[i, j] = (float)(bigNoiseVector3[i, j].Z);
}
}
return bigNoise;
}
}
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