Data update

Task/Polyspiral/EasyLang/polyspiral.easy

@@ -0,0 +1,20 @@
+color 944
+linewidth 0.3
+on animate
+   clear
+   incr = (incr + 0.05) mod 360
+   x1 = 50
+   y1 = 50
+   length = 1
+   angle = incr
+   move x1 y1
+   for i = 1 to 150
+      x2 = x1 + cos angle * length
+      y2 = y1 + sin angle * length
+      line x2 y2
+      x1 = x2
+      y1 = y2
+      length += 1
+      angle = (angle + incr) mod 360
+   .
+.

Task/Polyspiral/Zig/polyspiral.zig

@@ -0,0 +1,50 @@
+const std = @import("std");
+const rl = @cImport({
+    @cInclude("raylib.h");
+    @cInclude("raymath.h");
+});
+
+const SCREEN_WIDTH = 640;
+const SCREEN_HEIGHT = 480;
+var incr: f32 = 0;
+
+pub fn main() void {
+    rl.SetConfigFlags(rl.FLAG_WINDOW_RESIZABLE | rl.FLAG_VSYNC_HINT);
+    rl.SetTargetFPS(60);
+
+    rl.InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Polyspiral");
+
+    while (!rl.WindowShouldClose())
+        updateDrawFrame();
+
+    rl.CloseWindow();
+}
+
+fn updateDrawFrame() void {
+    rl.BeginDrawing();
+
+    rl.ClearBackground(rl.BLACK);
+
+    incr = @mod(incr + 0.001, 360);
+
+    drawSpiral(5, std.math.degreesToRadians(f32, incr));
+
+    rl.EndDrawing();
+}
+
+fn drawSpiral(_length: f32, _angle: f32) void {
+    const width = rl.GetScreenWidth();
+    const height = rl.GetScreenHeight();
+    var point0 = rl.Vector2{ .x = @as(f32, @floatFromInt(width)) / 2, .y = @as(f32, @floatFromInt(height)) / 2 };
+    var length = _length;
+    var angle = _angle;
+    for (0..150) |_| {
+        const line_vector = rl.Vector2Rotate(rl.Vector2{ .x = length, .y = 0 }, angle);
+        const point1 = rl.Vector2Add(point0, line_vector);
+        rl.DrawLineV(point0, point1, rl.LIME);
+        point0 = point1;
+        length += 3;
+        angle += incr;
+        angle = @mod(angle, comptime @as(f32, (2.0 * std.math.pi)));
+    }
+}