working sine gen in zig

.gitignore

@@ -18,6 +18,9 @@ t*.html
 .kdev4/
 HTML/
 PDF/
+.zig-cache/
+*/src/soundnode
+*.o
 JSON/
 JSON_HIST/
 testrun*/

test.py

@@ -18,15 +18,12 @@ class TestProgram(Program):
 		self.reset()
 		
 		sn = SineNode(440, self.room)
-		sn2 = SawtoothNode(440, self.room)
 		
-		sn.air_to(self.room.left_sink)
-		sn.air_to(self.room.right_sink)
-		sn2.air_to(self.room.left_sink)
-		sn2.air_to(self.room.right_sink)
+		sn.wire_to(self.room.left_sink)
+		sn.wire_to(self.room.right_sink)
 		
-		sn.start_location = (4,0,0)
-		sn2.start_location = (-4,0,0)
+		#sn.start_location = (49,0,0)
+		#sn2.start_location = (-4,0,0)
 		
 		"""
 		NoteAction('A4', self.st(0), self.st(0.5), [sn, tn], self)
@@ -34,8 +31,8 @@ class TestProgram(Program):
 		NoteAction('F4', self.st(2), self.st(0.5), [sn, tn], self)
 		NoteAction('E4', self.st(3), self.st(0.5), [sn, tn], self)
 		"""
-		LinearPitchTransition('A4', 'E4', self.st(0), self.st(5), [sn], self)	
-		LinearPitchTransition('E4', 'A4', self.st(0), self.st(5), [sn2], self)		
+		#LinearPitchTransition('A4', 'E4', self.st(0), self.st(5), [sn], self)	
+		#LinearPitchTransition('E4', 'A4', self.st(0), self.st(5), [sn2], self)		
 
 		#LinearSpatialTransition((-8,0,0),(8,0,0), self.st(0), self.st(5), [sn], self)	
 		

zigsonnum/src/main.bak.zig

@@ -0,0 +1,46 @@
+//! By convention, main.zig is where your main function lives in the case that
+//! you are building an executable. If you are making a library, the convention
+//! is to delete this file and start with root.zig instead.
+
+pub fn main() !void {
+    // Prints to stderr (it's a shortcut based on `std.io.getStdErr()`)
+    std.debug.print("All your {s} are belong to us.\n", .{"codebase"});
+
+    // stdout is for the actual output of your application, for example if you
+    // are implementing gzip, then only the compressed bytes should be sent to
+    // stdout, not any debugging messages.
+    const stdout_file = std.io.getStdOut().writer();
+    var bw = std.io.bufferedWriter(stdout_file);
+    const stdout = bw.writer();
+
+    try stdout.print("Run `zig build test` to run the tests.\n", .{});
+
+    try bw.flush(); // Don't forget to flush!
+}
+
+test "simple test" {
+    var list = std.ArrayList(i32).init(std.testing.allocator);
+    defer list.deinit(); // Try commenting this out and see if zig detects the memory leak!
+    try list.append(42);
+    try std.testing.expectEqual(@as(i32, 42), list.pop());
+}
+
+test "use other module" {
+    try std.testing.expectEqual(@as(i32, 150), lib.add(100, 50));
+}
+
+test "fuzz example" {
+    const Context = struct {
+        fn testOne(context: @This(), input: []const u8) anyerror!void {
+            _ = context;
+            // Try passing `--fuzz` to `zig build test` and see if it manages to fail this test case!
+            try std.testing.expect(!std.mem.eql(u8, "canyoufindme", input));
+        }
+    };
+    try std.testing.fuzz(Context{}, Context.testOne, .{});
+}
+
+const std = @import("std");
+
+/// This imports the separate module containing `root.zig`. Take a look in `build.zig` for details.
+const lib = @import("zigsonnum_lib");

zigsonnum/src/main.zig

@@ -1,46 +1,67 @@
-//! By convention, main.zig is where your main function lives in the case that
-//! you are building an executable. If you are making a library, the convention
-//! is to delete this file and start with root.zig instead.
-
-pub fn main() !void {
-    // Prints to stderr (it's a shortcut based on `std.io.getStdErr()`)
-    std.debug.print("All your {s} are belong to us.\n", .{"codebase"});
-
-    // stdout is for the actual output of your application, for example if you
-    // are implementing gzip, then only the compressed bytes should be sent to
-    // stdout, not any debugging messages.
-    const stdout_file = std.io.getStdOut().writer();
-    var bw = std.io.bufferedWriter(stdout_file);
-    const stdout = bw.writer();
-
-    try stdout.print("Run `zig build test` to run the tests.\n", .{});
-
-    try bw.flush(); // Don't forget to flush!
-}
-
-test "simple test" {
-    var list = std.ArrayList(i32).init(std.testing.allocator);
-    defer list.deinit(); // Try commenting this out and see if zig detects the memory leak!
-    try list.append(42);
-    try std.testing.expectEqual(@as(i32, 42), list.pop());
-}
-
-test "use other module" {
-    try std.testing.expectEqual(@as(i32, 150), lib.add(100, 50));
-}
-
-test "fuzz example" {
-    const Context = struct {
-        fn testOne(context: @This(), input: []const u8) anyerror!void {
-            _ = context;
-            // Try passing `--fuzz` to `zig build test` and see if it manages to fail this test case!
-            try std.testing.expect(!std.mem.eql(u8, "canyoufindme", input));
-        }
-    };
-    try std.testing.fuzz(Context{}, Context.testOne, .{});
-}
-
 const std = @import("std");
+const soundnode = @import("soundnode.zig");
+const expect = std.testing.expect;
+const print = std.debug.print;
+const math = std.math;
 
-/// This imports the separate module containing `root.zig`. Take a look in `build.zig` for details.
-const lib = @import("zigsonnum_lib");
+
+const TestError = error {
+	IsFive,
+	IsSix
+};
+
+
+	
+
+pub fn prnt(s: []const u8) void {
+	print("{s}\n", .{s});
+}
+
+pub fn prntNum(i: anytype) void {
+	print("{d}\n", .{i});
+}
+
+pub fn testValue(a: u8) TestError!u8 {
+	
+	if (a == 5) {
+		return TestError.IsFive;
+	}
+	else {
+		if (a == 6) {
+			return TestError.IsSix;
+		}
+		else {
+			return a;	
+		}
+	}
+	
+	
+}
+
+pub fn distanceBetweenPoints(pt1: *const Pnt, pt2: *const Pnt) f32 {
+
+	if ((pt1.x == pt2.x) and (pt1.y == pt2.y) and (pt1.z == pt2.z)) {
+		return 0;
+	}
+	
+	const dx: f32 = pt1.x - pt2.x;
+	const dy: f32 = pt1.y - pt2.y;
+	const dz: f32 = pt1.z - pt2.z;
+	
+	return math.sqrt(dx*dx + dy*dy + dz*dz);
+	
+}
+
+pub fn main() void {
+	
+	const p1: Pnt = Pnt{.x = 0, .y = 0};
+	const p2: Pnt = Pnt{.x = 1, .y = 1};
+	
+	const p3: Pnt = Pnt{.x = 1, .y = 9751.767};
+	
+	var dst: f32 = distanceBetweenPoints(&p1, &p2);
+	prntNum(dst);
+	
+	dst = distanceBetweenPoints(&p1, &p3);
+	prntNum(dst);
+}

zigsonnum/src/soundnode.zig

@@ -0,0 +1,123 @@
+const std = @import("std");
+const print = std.debug.print;
+const math = std.math;
+const Endian = std.builtin.Endian;
+
+pub const tau: f64 = 2 * 3.1415926535897932384626433832795028841971;
+
+
+pub fn prnt(s: []const u8) void {
+	print("{s}\n", .{s});
+}
+
+
+const SoundSettings = struct {
+
+	const default_sample_rate: u16 = 44100;
+	const default_bit_depth: u8 = 24;
+		
+	sample_rate: u16 = default_sample_rate,
+	speed_of_sound: f32 = 343.0 / @as(f32, default_sample_rate),
+	bit_depth: u8 = default_bit_depth,
+	max_amp: i64 = math.pow(i64, 2, default_bit_depth-1) - 1,
+	min_amp: i64 = - math.pow(i64, 2, default_bit_depth-1),
+	sample_width: u8 = @intFromFloat(@as(f32, default_bit_depth) / 8.0),
+	sine_multiplier: f64 = tau / default_sample_rate,
+	
+	fn printSettings(self: *const SoundSettings) void {
+		print("Sample rate : {d}\n", .{self.sample_rate});
+		print("Bit depth   : {d}\n", .{self.bit_depth});
+		print("Max amp     : {d}\n", .{self.max_amp});
+		print("Min amp     : {d}\n", .{self.min_amp});
+		print("Sample width: {d}\n", .{self.sample_width});
+		print("Sine mult   : {d}\n", .{self.sine_multiplier});
+	}
+	
+};
+
+
+const Pnt = struct {
+
+	x: f32 = 0,
+	y: f32 = 0,
+	z: f32 = 0,
+	
+	fn printPnt(self: *const Pnt) void {
+		print("{d} {d} {d}\n", .{self.x, self.y, self.z});
+	}
+	
+};
+
+const SoundNode = struct {
+	name: []const u8 = "soundnode",
+	air_in: []*SoundNode = undefined,
+	wire_in: []*SoundNode = undefined,
+	location: Pnt = Pnt{.x = 0, .y = 0, .z = 0}
+};
+
+pub fn singleSineTick(st: *SoundSettings, freq: f16, t: u64) f64 {
+	const ft: f64 = @floatFromInt(t);
+	return math.sin(st.sine_multiplier * @as(f64, freq) * ft);
+}
+
+pub fn main() !void {
+
+	var sn1: SoundNode = SoundNode{ .name="left_sink" };
+	sn1.location.x = 4;
+	
+	var st = SoundSettings{};
+	st.printSettings();
+	
+	const duration_in_sec: u32 = 5*60;
+	
+	prnt("start");
+	
+	const stdout_file = std.io.getStdOut().writer();
+	var bw = std.io.bufferedWriter(stdout_file);
+	const stdout = bw.writer();
+	
+	//WRITING WAV HEADER
+	try stdout.writeAll("RIFF");
+	
+	try stdout.writeInt(
+		u32,
+		36 + ((duration_in_sec * st.sample_rate) * 2 * st.sample_width),
+		Endian.little,
+	);
+	
+	try stdout.writeAll("WAVE");
+	try stdout.writeAll("fmt ");
+	
+	try stdout.writeInt(u32, 16, Endian.little);
+	try stdout.writeInt(u16, 1, Endian.little);
+	try stdout.writeInt(u16, 2, Endian.little);
+	try stdout.writeInt(u32, st.sample_rate, Endian.little);
+	
+	const block_align: u16 = @intCast(2 * st.sample_width);
+	
+	try stdout.writeInt(u32, @as(u32, block_align) * st.sample_rate, Endian.little);
+	try stdout.writeInt(u16, block_align, Endian.little);
+	try stdout.writeInt(u16, st.bit_depth, Endian.little);
+
+	try stdout.writeAll("data");
+	try stdout.writeInt(
+		u32,
+		(duration_in_sec * st.sample_rate) * 2 * st.sample_width,
+		Endian.little,
+	);
+	
+	var sample: i24 = 0.0;
+	
+	var amp: f64 = undefined;
+	
+	for (0 .. st.sample_rate * duration_in_sec) |t| {
+		amp = singleSineTick(&st, 440, t);
+		
+		sample = @intFromFloat(amp * @as(f64, @floatFromInt(st.max_amp)));
+		try stdout.writeInt(i24, sample, Endian.little);
+		try stdout.writeInt(i24, sample, Endian.little);
+	}
+	prnt("done");
+	
+	try bw.flush();
+}