Remove accidental file

1 files changed, 0 insertions, 552 deletions

diff --git a/\ b/\
deleted file mode 100644
index a6126f8..0000000
--- a/\
+++ /dev/null
@@ -1,552 +0,0 @@
-const std = @import("std");
-const webgl = @import("webgl.zig");
-
-const Mat3 = @import("matrix.zig").Matrix(f32, 3, 3);
-
-extern fn consoleLog(ptr: [*c]const u8, len: u32) void;
-extern fn rand() f32;
-extern fn getScreenWidth() f32;
-extern fn getScreenHeight() f32;
-extern fn registerKeyInput(ptr: [*c]const u8, len: u32, out: *u32) void;
-
-const LoadTextureInfo = packed struct {
-    status: u32 = 0,
-    width: u32 = 0,
-    height: u32 = 0,
-};
-extern fn loadTexture(ptr: [*c]const u8, len: u32, texture: webgl.Texture, out_info: *LoadTextureInfo) void;
-
-const vs_source = @embedFile("vertex.glsl");
-const fs_source = @embedFile("fragment.glsl");
-
-fn formatLog(comptime fmt: []const u8, args: anytype) void {
-    var buf: [512]u8 = undefined;
-    const m = std.fmt.bufPrint(&buf, fmt, args) catch return;
-    consoleLog(m.ptr, m.len);
-}
-
-const pi = 3.1415926535;
-
-var timer: f32 = 0.0;
-var rects: [128]Rectangle = undefined;
-var cols: [128][3]f32 = undefined;
-
-fn assert(ok: bool) void {
-    if (!ok) unreachable;
-}
-
-pub const LinearCongruentialGenerator = struct {
-    mod: u64,
-    mul: u64,
-    inc: u64,
-    seed: u64,
-
-    const Self = @This();
-    /// Move to the next seed value internally and return that value
-    pub fn next(self: *Self) u64 {
-        const r = (self.seed *% self.mul +% self.inc) % self.mod;
-        self.seed = r;
-        return r;
-    }
-
-    /// Generate an int of type T with a value from min to max (inclusive)
-    pub fn randInt(self: *Self, comptime T: type, min: T, max: T) T {
-        assert(max > min);
-        const range: u64 = @as(u64, @intCast(max - min)) + 1;
-        assert(self.mod >= range);
-        const val: T = @intCast(self.next() % range);
-        return min + val;
-    }
-
-    pub fn randFloat(self: *Self, comptime T: type) T {
-        const pct: T = @as(T, @floatFromInt(self.next())) / @as(T, @floatFromInt(self.mod));
-        return pct;
-    }
-
-    pub fn randEnum(self: *Self, comptime T: type) T {
-        const info = @typeInfo(T);
-        if (info != .Enum) @compileError("Cannot call randEnum on type " ++ @typeName(T));
-        const fields = info.Enum.fields;
-        const vals = comptime blk: {
-            var result: [fields.len]T = undefined;
-            for (fields, 0..) |f, i| {
-                result[i] = @field(T, f.name);
-            }
-            break :blk result;
-        };
-        const i = self.randInt(usize, 0, fields.len - 1);
-        return vals[i];
-    }
-
-    pub fn randBool(self: *Self) bool {
-        return self.next() % 2 == 0;
-    }
-
-    pub fn ZX81(seed: u64) Self {
-        const mod = pow(u64, 2, 16) + 1;
-        return .{
-            .seed = seed,
-            .mod = mod,
-            .mul = 75,
-            .inc = 74,
-        };
-    }
-};
-
-pub fn pow(comptime T: type, base: T, exp: T) T {
-    if (exp == 0) {
-        return 1;
-    } else if (exp > 0) {
-        return base * pow(T, base, exp - 1);
-    } else if (exp < 0) {
-        return pow(T, base, exp + 1) / base;
-    }
-    unreachable;
-}
-
-const Star = struct {
-    dist: f32,
-    pdist: f32,
-    angle: f32,
-    initial_len: f32,
-    hue: f32,
-};
-const max_dist = 100;
-
-var rng: LinearCongruentialGenerator = undefined;
-
-const star_count = 100000;
-var stars: [star_count]Star = undefined;
-
-var right: u32 = 0;
-var pright: u32 = 0;
-var left: u32 = 0;
-var pleft: u32 = 0;
-var up: u32 = 0;
-var pup: u32 = 0;
-var down: u32 = 0;
-var pdown: u32 = 0;
-
-const circle = circlePoints(32);
-
-const LineProgram = struct {
-    prog: webgl.Program,
-    vao: webgl.VertexArrayObject,
-
-    res_uniform_location: i32,
-
-    pos_buffer: webgl.Buffer,
-    col_buffer: webgl.Buffer,
-
-    fn init() !LineProgram {
-        const vert = loadShader(.vertex_shader, @embedFile("line_vertex.glsl")) catch return error.FailedToLoadVertexShader;
-        const frag = loadShader(.fragment_shader, fs_source) catch return error.FailedToLoadFragmentShader;
-        const prog = createGLProgram(vert, frag) catch return error.FailedToCreateProgram;
-        webgl.useProgram(prog);
-
-        const attr_name = "in_pos";
-        const pos_attr_location = webgl.getAttribLocation(prog, attr_name.ptr, attr_name.len);
-
-        const col_attr = "color";
-        const col_attr_location = webgl.getAttribLocation(prog, col_attr.ptr, col_attr.len);
-
-        const res_uniform_location = getUniformLocation(prog, "u_resolution") catch unreachable;
-
-        const pos_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, pos_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(&[_]f32{ 0, 0, 0, 0 }), 2, .static_draw);
-
-        const vao = webgl.createVertexArray();
-        webgl.bindVertexArray(vao);
-        webgl.enableVertexAttribArray(pos_attr_location);
-        webgl.vertexAttribPointer(@intCast(pos_attr_location), 4, .f32, .false, 0, 0);
-        webgl.vertexAttribDivisor(pos_attr_location, 1);
-
-        const col_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, col_buffer);
-        webgl.enableVertexAttribArray(col_attr_location);
-        webgl.vertexAttribPointer(@intCast(col_attr_location), 1, .f32, .false, 0, 0);
-        webgl.vertexAttribDivisor(col_attr_location, 1);
-
-        return .{
-            .prog = prog,
-            .pos_buffer = pos_buffer,
-            .col_buffer = col_buffer,
-            .res_uniform_location = res_uniform_location,
-            .vao = vao,
-        };
-    }
-};
-
-const CircleProgram = struct {
-    prog: webgl.Program,
-    vao: webgl.VertexArrayObject,
-
-    res_uniform_location: i32,
-
-    translation_buffer: webgl.Buffer,
-    scale_buffer: webgl.Buffer,
-    col_buffer: webgl.Buffer,
-
-    fn init() !CircleProgram {
-        const vert = loadShader(.vertex_shader, @embedFile("vertex.glsl")) catch return error.FailedToLoadVertexShader;
-        const frag = loadShader(.fragment_shader, fs_source) catch return error.FailedToLoadFragmentShader;
-        const prog = createGLProgram(vert, frag) catch return error.FailedToCreateProgram;
-        webgl.useProgram(prog);
-
-        const attr_name = "in_pos";
-        const pos_attr_location = webgl.getAttribLocation(prog, attr_name.ptr, attr_name.len);
-
-        const col_attr = "color";
-        const col_attr_location = webgl.getAttribLocation(prog, col_attr.ptr, col_attr.len);
-
-        const translation_attr = "translation";
-        const translation_attr_location = webgl.getAttribLocation(
-            prog,
-            translation_attr.ptr,
-            translation_attr.len,
-        );
-
-        const scale_attr = "scale";
-        const scale_attr_location = webgl.getAttribLocation(
-            prog,
-            scale_attr.ptr,
-            scale_attr.len,
-        );
-
-        const res_uniform_location = getUniformLocation(prog, "u_resolution") catch unreachable;
-
-        const pos_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, pos_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(&circle), circle.len * 2, .static_draw);
-
-        const vao = webgl.createVertexArray();
-        webgl.bindVertexArray(vao);
-        webgl.enableVertexAttribArray(pos_attr_location);
-        webgl.vertexAttribPointer(@intCast(pos_attr_location), 2, .f32, .false, 0, 0);
-
-        const col_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, col_buffer);
-        webgl.enableVertexAttribArray(col_attr_location);
-        webgl.vertexAttribPointer(@intCast(col_attr_location), 1, .f32, .false, 0, 0);
-        webgl.vertexAttribDivisor(col_attr_location, 1);
-
-        const scale_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, scale_buffer);
-        webgl.enableVertexAttribArray(scale_attr_location);
-        webgl.vertexAttribPointer(@intCast(scale_attr_location), 1, .f32, .false, 0, 0);
-        webgl.vertexAttribDivisor(scale_attr_location, 1);
-
-        const translation_buffer = webgl.createBuffer();
-        webgl.bindBuffer(.array_buffer, translation_buffer);
-        webgl.enableVertexAttribArray(translation_attr_location);
-        webgl.vertexAttribPointer(@intCast(translation_attr_location), 2, .f32, .false, 0, 0);
-        webgl.vertexAttribDivisor(translation_attr_location, 1);
-
-        return .{
-            .prog = prog,
-            .translation_buffer = translation_buffer,
-            .col_buffer = col_buffer,
-            .scale_buffer = scale_buffer,
-            .res_uniform_location = res_uniform_location,
-            .vao = vao,
-        };
-    }
-};
-
-var circle_program: CircleProgram = undefined;
-var line_program: LineProgram = undefined;
-
-export fn init() void {
-    const f_seed = rand() * (pow(f32, 2, 16) + 1);
-    const seed: u64 = @intFromFloat(f_seed);
-    rng = LinearCongruentialGenerator.ZX81(seed);
-
-    circle_program = CircleProgram.init() catch |err| {
-        formatLog("Failed to create CircleProgram. {}", .{err});
-        return;
-    };
-
-    line_program = LineProgram.init() catch |err| {
-        formatLog("Failed to create CircleProgram. {}", .{err});
-        return;
-    };
-
-    const height = getScreenHeight();
-
-    for (&stars) |*s| {
-        s.angle = lerp(0, 2 * pi, rng.randFloat(f32));
-        s.initial_len = lerp(0, height / 2, rng.randFloat(f32));
-        s.dist = max_dist;
-        s.pdist = max_dist;
-        s.hue = rng.randFloat(f32);
-    }
-
-    registerKey(.up, &up);
-    registerKey(.right, &right);
-    registerKey(.left, &left);
-    registerKey(.down, &down);
-}
-
-const KeyboardKey = enum {
-    up,
-    down,
-    left,
-    right,
-};
-
-fn registerKey(key: KeyboardKey, out: *u32) void {
-    const key_code = switch (key) {
-        .up => "ArrowUp",
-        .down => "ArrowDown",
-        .left => "ArrowLeft",
-        .right => "ArrowRight",
-    };
-    registerKeyInput(key_code.ptr, key_code.len, out);
-}
-
-fn rad2deg(rads: f32) f32 {
-    return rads * (180.0 / pi);
-}
-
-var frame_counter: u32 = 0;
-var speed: f32 = 0.1;
-var sub_count: u32 = star_count;
-
-const batch_capacity = 90000;
-var translation_data: [batch_capacity][2]f32 = undefined;
-var line_data: [batch_capacity][2][2]f32 = undefined;
-var scale_data: [batch_capacity]f32 = undefined;
-var color_data: [batch_capacity]f32 = undefined;
-
-const DrawBatch = struct {
-    translation: [][2]f32,
-    scales: []f32,
-    colors: []f32,
-    lines: [][2][2]f32,
-    len: u32 = 0,
-
-    fn addInstance(self: *DrawBatch, translation: [2]f32, past_translation: [2]f32, hue: f32, scale: f32) !void {
-        if (self.len == self.translation.len or self.len == self.colors.len or self.len == self.scales.len or self.len == self.lines.len) return error.OutOfSpace;
-
-        self.translation[self.len] = translation;
-        self.colors[self.len] = hue;
-        self.scales[self.len] = scale;
-        self.lines[self.len] = .{ past_translation, translation };
-        self.len += 1;
-    }
-
-    fn draw(self: DrawBatch) void {
-        const width = getScreenWidth();
-        const height = getScreenHeight();
-        webgl.bindVertexArray(circle_program.vao);
-        webgl.useProgram(circle_program.prog);
-        webgl.uniform2f(circle_program.res_uniform_location, width, height);
-        webgl.bindBuffer(.array_buffer, circle_program.translation_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(self.translation), self.len * 2, .dynamic_draw);
-
-        webgl.bindBuffer(.array_buffer, circle_program.scale_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(self.scales), self.len, .dynamic_draw);
-
-        webgl.bindBuffer(.array_buffer, circle_program.col_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(self.colors), self.len, .dynamic_draw);
-        webgl.drawArraysInstanced(.triangles, 0, circle.len, @intCast(self.len));
-
-        webgl.bindVertexArray(line_program.vao);
-        webgl.useProgram(line_program.prog);
-        webgl.uniform2f(line_program.res_uniform_location, width, height);
-
-        webgl.bindBuffer(.array_buffer, line_program.pos_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(self.lines), self.len * 2 * 2, .dynamic_draw);
-
-        webgl.bindBuffer(.array_buffer, line_program.col_buffer);
-        webgl.bufferData(.array_buffer, @ptrCast(self.colors), self.len, .dynamic_draw);
-        webgl.drawArraysInstanced(.lines, 0, 2, @intCast(self.len));
-    }
-};
-
-var anim_t: f32 = 0;
-
-export fn update(elapsed_time: f32) void {
-    const report_freq = 100;
-    frame_counter += 1;
-    timer += elapsed_time;
-    anim_t += elapsed_time;
-    if (frame_counter % report_freq == 0) {
-        const avg = timer / report_freq;
-        formatLog("{d:.2} Average FPS", .{1.0 / avg});
-        timer = 0;
-    }
-    //while (timer >= 2 * pi) {
-    //    timer -= 2 * pi;
-    //}
-
-    const right_pressed = right != 0 and pright == 0;
-    const left_pressed = left != 0 and pleft == 0;
-
-    if (right_pressed) {
-        speed += 0.1;
-    }
-    if (left_pressed) {
-        speed -= 0.1;
-    }
-    speed = @min(1.0, @max(speed, -1.0));
-
-    if (up != 0) {
-        if (sub_count < star_count) {
-            sub_count += 100;
-        }
-    }
-
-    if (down != 0) {
-        if (sub_count > 0) {
-            sub_count -= 100;
-        }
-    }
-
-    pright = right;
-    pleft = left;
-    pup = up;
-    pdown = down;
-
-    webgl.viewport(0, 0, 1280, 720);
-    webgl.useProgram(circle_program.prog);
-    webgl.bindVertexArray(circle_program.vao);
-    webgl.uniform2f(circle_program.res_uniform_location, 1280, 720);
-
-    webgl.clearColor(0.0, 0.0, 0.0, 1.0);
-    webgl.clear(webgl.color_buffer_bit | webgl.depth_buffer_bit);
-
-    var batch: DrawBatch = .{
-        .translation = &translation_data,
-        .colors = &color_data,
-        .scales = &scale_data,
-        .lines = &line_data,
-    };
-
-    const width = getScreenWidth();
-    const height = getScreenHeight();
-
-    for (stars[0..sub_count]) |*s| {
-        s.pdist = s.dist;
-        s.dist -= speed;
-        s.angle += @cos(anim_t) * 0.05;
-        const plen = lerp(1000, s.initial_len, s.pdist / max_dist);
-        const psx = (@cos(s.angle) * plen) + width * 0.5;
-        const psy = (@sin(s.angle) * plen) + height * 0.5;
-
-        const len = lerp(1000, s.initial_len, s.dist / max_dist);
-        const sx = (@cos(s.angle) * len) + width * 0.5;
-        const sy = (@sin(s.angle) * len) + height * 0.5;
-        const scale = lerp(16, 0, s.dist / max_dist);
-
-        batch.addInstance(.{ sx, sy }, .{ psx, psy }, s.hue, scale) catch unreachable;
-        if (batch.len == batch_capacity) {
-            batch.draw();
-            batch.len = 0;
-        }
-
-        if (sx < 0 or sx > width or sy < 0 or sy > height + 32) {
-            s.angle = lerp(0, 8 * pi, rng.randFloat(f32));
-            s.initial_len = lerp(0, height, rng.randFloat(f32));
-            s.dist = max_dist;
-            s.pdist = max_dist;
-        }
-    }
-
-    batch.draw();
-}
-
-fn lerp(a: f32, b: f32, v: f32) f32 {
-    return a + (b - a) * v;
-}
-
-fn invLerp(a: f32, b: f32, v: f32) f32 {
-    return (v - a) / (b - a);
-}
-
-fn mapLerp(from_a: f32, from_b: f32, to_a: f32, to_b: f32, v: f32) f32 {
-    const pct = invLerp(from_a, from_b, v);
-    return lerp(to_a, to_b, pct);
-}
-
-const Rectangle = struct {
-    pos: @Vector(2, f32),
-    size: @Vector(2, f32),
-};
-
-const Color = struct {
-    r: f32 = 0.0,
-    g: f32 = 0.0,
-    b: f32 = 0.0,
-    a: f32 = 1.0,
-
-    const white: Color = .{ .r = 1.0, .g = 1.0, .b = 1.0, .a = 1.0 };
-};
-
-fn circlePoints(comptime segments: u32) [segments * 3][2]f32 {
-    const segment_rads = (2 * pi) / @as(comptime_float, segments);
-    var r: [segments * 3][2]f32 = undefined;
-    for (0..segments) |s| {
-        const sf: f32 = @floatFromInt(s);
-        const start_angle = segment_rads * sf;
-        const start_x = @cos(start_angle);
-        const start_y = @sin(start_angle);
-        const start: @Vector(2, f32) = .{ start_x, start_y };
-
-        const end_angle = segment_rads * (sf + 1);
-        const end_x = @cos(end_angle);
-        const end_y = @sin(end_angle);
-        const end: @Vector(2, f32) = .{ end_x, end_y };
-
-        const i = s * 3;
-        r[i] = @Vector(2, f32){ 0, 0 };
-        r[i + 1] = start;
-        r[i + 2] = end;
-    }
-
-    return r;
-}
-
-fn getUniformLocation(program: webgl.Program, name: []const u8) !i32 {
-    const loc = webgl.getUniformLocation(program, name.ptr, name.len);
-    if (loc < 0) return error.FailedToGetLocation;
-
-    return loc;
-}
-
-fn loadShader(shader_type: webgl.GLShaderType, source: []const u8) !webgl.Shader {
-    const shader = webgl.createShader(shader_type);
-    errdefer webgl.deleteShader(shader);
-
-    webgl.shaderSource(shader, source.ptr, source.len);
-    webgl.compileShader(shader);
-
-    if (webgl.getShaderParameter(shader, .compile_status) == 0) {
-        var buf: [512]u8 = undefined;
-        const len = webgl.getShaderInfoLog(shader, &buf, buf.len);
-        const msg = buf[0..len];
-        consoleLog(msg.ptr, msg.len);
-        return error.CompilationFailed;
-    }
-
-    return shader;
-}
-
-fn createGLProgram(vert: webgl.Shader, frag: webgl.Shader) !webgl.Program {
-    const program = webgl.createProgram();
-    errdefer webgl.deleteProgram(program);
-
-    webgl.attachShader(program, vert);
-    webgl.attachShader(program, frag);
-    webgl.linkProgram(program);
-    if (webgl.getProgramParameter(program, .link_status) == 0) {
-        var buf: [512]u8 = undefined;
-        const len = webgl.getProgramInfoLog(program, &buf, buf.len);
-        const msg = buf[0..len];
-        consoleLog(msg.ptr, msg.len);
-        return error.LinkFailed;
-    }
-
-    return program;
-}