1 extern crate mandelwow_lib;
9 use cgmath::{Euler, Matrix4, Rad, Vector3, Zero};
10 use cgmath::conv::array4x4;
11 use glium::{DisplayBuild, Surface};
12 use glutin::ElementState::Pressed;
13 use glutin::Event::KeyboardInput;
14 use glutin::VirtualKeyCode;
16 use std::f32::consts::PI;
17 use std::time::{Duration, Instant};
19 #[cfg(target_os = "emscripten")]
20 use std::os::raw::{c_int, c_void};
22 fn screenshot(display : &glium::Display) {
23 let image: glium::texture::RawImage2d<u8> = display.read_front_buffer();
24 let image = image::ImageBuffer::from_raw(image.width, image.height, image.data.into_owned()).unwrap();
25 let image = image::DynamicImage::ImageRgba8(image).flipv();
26 let mut output = std::fs::File::create(&std::path::Path::new("screenshot.png")).unwrap();
27 image.save(&mut output, image::ImageFormat::PNG).unwrap();
30 fn gl_info(display : &glium::Display) {
31 let version = *display.get_opengl_version();
32 let api = match version {
33 glium::Version(glium::Api::Gl, _, _) => "OpenGL",
34 glium::Version(glium::Api::GlEs, _, _) => "OpenGL ES"
36 println!("{} context verson: {}", api, display.get_opengl_version_string());
39 #[cfg(target_os = "emscripten")]
40 #[allow(non_camel_case_types)]
41 type em_callback_func = unsafe extern fn();
42 #[cfg(target_os = "emscripten")]
44 fn emscripten_set_main_loop(func : em_callback_func, fps : c_int, simulate_infinite_loop : c_int);
47 #[cfg(target_os = "emscripten")]
48 thread_local!(static MAIN_LOOP_CALLBACK: std::cell::RefCell<*mut c_void> =
49 std::cell::RefCell::new(std::ptr::null_mut()));
51 #[cfg(target_os = "emscripten")]
52 pub fn set_main_loop_callback<F>(callback : F) where F : FnMut() -> support::Action {
53 MAIN_LOOP_CALLBACK.with(|log| {
54 *log.borrow_mut() = &callback as *const _ as *mut c_void;
57 unsafe { emscripten_set_main_loop(wrapper::<F>, 0, 1); }
59 unsafe extern "C" fn wrapper<F>() where F : FnMut() -> support::Action {
60 MAIN_LOOP_CALLBACK.with(|z| {
61 let closure = *z.borrow_mut() as *mut F;
67 #[cfg(not(target_os = "emscripten"))]
68 pub fn set_main_loop_callback<F>(callback : F) where F : FnMut() -> support::Action {
69 support::start_loop(callback);
73 let _soundplayer = sound::start();
75 let display = glutin::WindowBuilder::new()
76 .with_dimensions(1280, 720)
77 //.with_fullscreen(glutin::get_primary_monitor())
78 .with_depth_buffer(24)
80 .with_title(format!("MandelWow"))
86 let mandelwow_program = mandelwow::program(&display);
87 let bounding_box_program = bounding_box::solid_fill_program(&display);
88 let shaded_program = shaded_cube::shaded_program(&display);
90 let mut camera = support::camera::CameraState::new();
92 let mut pause = false;
93 let mut bounding_box_enabled = true;
94 let mut fullscreen = true;
96 // These are the bounds of the 3D Mandelwow section which we render in 3-space.
105 let mandelwow_bbox = bounding_box::BoundingBox::new(&display, &bounds, &bounding_box_program);
106 let shaded_cube = ShadedCube::new(&display, &Cube::default(), &shaded_program);
108 const SEA_XSIZE: usize = 24;
109 const SEA_ZSIZE: usize = 20;
110 let sea_xmin = -14.0f32;
111 let sea_xmax = 14.0f32;
113 let sea_zmin = -2.0f32;
114 let sea_zmax = -26.0f32;
115 let sea_xstep = (sea_xmax - sea_xmin) / (SEA_XSIZE as f32);
116 let sea_zstep = (sea_zmax - sea_zmin) / (SEA_ZSIZE as f32);
118 let mut sea = [[Vector3::zero(); SEA_ZSIZE]; SEA_XSIZE];
119 for x in 0..SEA_XSIZE {
120 for z in 0..SEA_ZSIZE {
121 sea[x][z] = Vector3 {
122 x: sea_xmin + (x as f32) * sea_xstep,
124 z: sea_zmin + (z as f32) * sea_zstep,
129 let mut frame_cnt = 0;
130 let mut last_report_time = Instant::now();
131 let mut last_report_frame_cnt = 0;
132 let mut accum_draw_time = Duration::new(0, 0);
133 let mut accum_idle_time = Duration::new(0, 0);
135 set_main_loop_callback(|| {
137 let perspview = camera.get_perspview();
139 // Vary the wow factor to slice the Mandelwow along its 4th dimension.
142 let wsize = wmax - wmin;
143 let wow = (((t * 0.7).sin() + 1.0) / 2.0) * wsize + wmin;
145 //println!("t={} w={:?} camera={:?}", t, w, camera.get_pos());
147 let time_before_swap = Instant::now();
148 let mut frame = display.draw();
149 frame.clear_color_and_depth((0.0, 0.0, 0.0, 1.0), 1.0);
150 let time_before_draw = Instant::now();
152 let rotation = Matrix4::from(
153 Euler { x: Rad(t.sin() / 3.), y: Rad(t.sin() / 2.), z: Rad(t / 1.5)});
154 let z_trans = -3.0; // Send the model back a little bit so it fits the screen.
156 Matrix4::from_translation(Vector3::unit_z() * z_trans) * rotation;
157 let model = array4x4(model2);
159 // Draw the bounding box before the fractal, when the Z-buffer is still clear,
160 // so the lines behind the semi-translucent areas will be drawn.
161 if bounding_box_enabled {
162 let uniforms = uniform! {
164 view: camera.get_view(),
165 perspective: camera.get_perspective(),
167 mandelwow_bbox.draw(&mut frame, &uniforms);
170 for x in 0..SEA_XSIZE {
171 for z in 0..SEA_ZSIZE {
172 let wave = (((x as f32 / SEA_XSIZE as f32 * PI * 5.0 + t * 2.0)).sin() +
173 ((z as f32 / SEA_ZSIZE as f32 * PI * 3.0 + t * 3.0)).sin()) * 0.3;
174 let model = Matrix4::from_translation(sea[x][z] + Vector3 {x: 0., y: wave, z: 0.});
175 let uniforms = uniform! {
176 model: array4x4(model),
177 perspview: perspview,
178 col: [0., (1. - wave).abs() * 0.5, wave.abs()],
180 shaded_cube.draw(&mut frame, &uniforms);
184 mandelwow::draw(&display, &mut frame, &mandelwow_program, model, &camera, &bounds, wow);
186 frame.finish().unwrap();
187 let time_after_draw = Instant::now();
189 for ev in display.poll_events() {
191 glutin::Event::Closed |
192 KeyboardInput(Pressed, _, Some(VirtualKeyCode::Escape)) |
193 KeyboardInput(Pressed, _, Some(VirtualKeyCode::Q)) => {
194 return support::Action::Stop
196 KeyboardInput(Pressed, _, Some(VirtualKeyCode::B)) => {
197 bounding_box_enabled ^= true;
199 KeyboardInput(Pressed, _, Some(VirtualKeyCode::P)) => {
202 KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageUp)) => {
205 KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageDown)) => {
208 KeyboardInput(Pressed, _, Some(VirtualKeyCode::F10)) => {
209 screenshot(&display);
211 KeyboardInput(Pressed, _, Some(VirtualKeyCode::F11)) => {
214 // Not implemented on Linux
215 glutin::WindowBuilder::new()
216 .with_fullscreen(glutin::get_primary_monitor())
217 .with_depth_buffer(24)
218 .rebuild_glium(&display).unwrap();
220 //glutin::WindowBuilder::new()
221 // .rebuild_glium(&display).unwrap();
224 ev => camera.process_input(&ev),
228 let now = Instant::now();
230 accum_idle_time += time_before_draw - time_before_swap;
231 accum_draw_time += time_after_draw - time_before_draw;
232 if now - last_report_time > Duration::from_secs(5) {
233 fn millis(d : Duration) -> f32 {
234 d.as_secs() as f32 * 1e3 + d.subsec_nanos() as f32 / 1e6
236 let frames_done = frame_cnt - last_report_frame_cnt;
237 let fps = frames_done as f32 / (now - last_report_time).as_secs() as f32;
238 let avg_draw_time = millis(accum_draw_time / frames_done);
239 let avg_idle_time = millis(accum_idle_time / frames_done);
240 println!("fps={:.1} draw={:.1}ms idle={:.1}ms", fps, avg_draw_time, avg_idle_time);
242 last_report_time = now;
243 last_report_frame_cnt = frame_cnt;
244 accum_draw_time = Duration::new(0, 0);
245 accum_idle_time = Duration::new(0, 0);
253 support::Action::Continue