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Copy pathProgram.cs
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141 lines (123 loc) · 4.41 KB
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using System.Diagnostics;
using System.Drawing;
using System.Numerics;
using TurtleGraphics;
using Silk.NET.Input;
using Silk.NET.Windowing;
var avgOver = 16;
var renderTimes = new double[avgOver];
var frameRates = new double[avgOver];
var avgIndex = 0;
var numTurtles = 1000;
var worldSize = 1000;
var camera = Vector2.Zero;
IWindow window;
Renderer renderer = default!;
IInputContext input = default!;
Font font = default!;
var turtles = new (Vector2 Pos, float Angle, Vector4 Col, Vector2 Dir, float Rot)[numTurtles];
var options = WindowOptions.Default;
options.Size = new(800, 600);
options.Title = "TurtleGraphics Test Project";
window = Window.Create(options);
void OnLoad()
{
renderer = Renderer.GetApi(window);
using var ts = typeof(Program).Assembly.GetManifestResourceStream("ExampleProject.turtle.png") ?? throw new Exception("turtle.png not found");
using var fs = typeof(Program).Assembly.GetManifestResourceStream("ExampleProject.NotoSans.ttf") ?? throw new Exception("noto sans not found");
var tex = renderer.AddTexture(ts, "turtle", new() { ScalingType = ScalingType.NearestNeighbor });
font = renderer.CreateFont(fs);
for (var i = 0; i < numTurtles; i++)
{
var x = Random.Shared.Next(tex.Size.X, worldSize - tex.Size.X);
var y = Random.Shared.Next(tex.Size.Y, worldSize - tex.Size.Y);
var col = Color.FromArgb((int) ((uint) Random.Shared.Next() | 0xFF000000)).ToVector4();
var mov = new Vector2(Random.Shared.NextSingle() - 0.5f, Random.Shared.NextSingle() - 0.5f) *
Random.Shared.NextSingle() * 10f * 60f;
var rot = (Random.Shared.NextSingle() - 0.5f) * 0.5f * 60f;
turtles[i] = (new(x, y), 0f, col, mov, rot);
}
input = window.CreateInput();
input.Mice[0].Scroll += (mouse, wheel) => { renderer.Scale = Math.Clamp(renderer.Scale + wheel.Y * 0.2f, 0.2f, 4f); };
}
var dragging = false;
var lastMousePos = Vector2.Zero;
void OnUpdate(double deltaTime)
{
var dT = (float) deltaTime;
var tex = renderer.GetTexture("turtle");
var mouse = input.Mice[0];
if (mouse.IsButtonPressed(MouseButton.Left))
{
if (dragging)
{
camera += (lastMousePos - mouse.Position) / renderer.Scale;
}
else
{
mouse.Cursor.CursorMode = CursorMode.Disabled;
dragging = true;
}
lastMousePos = mouse.Position;
return; //Pause turtle movement while scrolling
}
else
{
dragging = false;
mouse.Cursor.CursorMode = CursorMode.Normal;
}
for (var i = 0; i < numTurtles; i++)
{
ref var turtle = ref turtles[i];
turtle.Pos += turtle.Dir * dT;
if (turtle.Pos.X < 0 || turtle.Pos.X > worldSize - tex.Size.X)
{
turtle.Dir.X *= -1;
turtle.Pos += turtle.Dir * dT;
}
if (turtle.Pos.Y < 0 || turtle.Pos.Y > worldSize - tex.Size.Y)
{
turtle.Dir.Y *= -1;
turtle.Pos += turtle.Dir * dT;
}
turtle.Angle = MathF.IEEERemainder(turtle.Angle + turtle.Rot * dT, MathF.Tau);
}
}
void OnRender(double deltaTime)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
renderer.Clear(Color.Black.ToVector4());
var tex = renderer.GetTexture("turtle");
renderer.DrawSolidRect(-camera, new(worldSize), 0, Color.CornflowerBlue.ToVector4());
for (var i = 0; i < numTurtles; i++)
{
ref var turtle = ref turtles[i];
var relPos = turtle.Pos - camera;
var centerPos = relPos + ((Vector2)tex.Size) / 2f;
var endOfLine = centerPos + turtle.Dir / 2f;
renderer.DrawSolidLine(centerPos, endOfLine, 5, turtle.Col);
renderer.DrawSolidRegularNGon(endOfLine, 10, 3, MathF.Atan2(turtle.Dir.Y, turtle.Dir.X), turtle.Col);
renderer.DrawSprite(tex, relPos, Vector2.One, turtle.Angle, turtle.Col);
}
var str = $"Render time: {renderTimes.Average():F3} ms; {frameRates.Average():F3} FPS";
var size = 16f;
renderer.DrawText(str, Vector2.Zero, font, size, Vector4.One);
stopwatch.Stop();
renderTimes[avgIndex] = stopwatch.Elapsed.TotalMilliseconds;
frameRates[avgIndex++] = 1 / deltaTime;
if (avgIndex == avgOver)
{
avgIndex = 0;
}
}
void OnClosing()
{
Console.WriteLine();
renderer.Dispose();
}
window.Load += OnLoad;
window.Update += OnUpdate;
window.Render += OnRender;
window.Closing += OnClosing;
window.Run();