// Wow. Such fractal.
-#[macro_use]
+use cube::Cube;
+use glium;
+use glium::index::PrimitiveType;
+use glium::Surface;
+use support;
-extern crate glium;
-extern crate glutin;
-extern crate libxm;
-extern crate sdl2;
-
-use glium::{DisplayBuild, Surface};
-use glium::index::{IndexBuffer, PrimitiveType};
-use glutin::ElementState::Pressed;
-use glutin::Event::KeyboardInput;
-use glutin::VirtualKeyCode;
-
-mod sound;
-mod support;
-
-#[derive(Copy, Clone)]
-struct Cube {
- xmin: f32,
- ymin: f32,
- zmin: f32,
- xmax: f32,
- ymax: f32,
- zmax: f32,
-}
/*
fn mand(cx: f32, cy: f32) -> [f32; 3] {
}
*/
-fn mandelwow_program(display: &glium::Display) -> glium::Program {
+pub fn program(display: &glium::Display) -> glium::Program {
return program!(display,
140 => {
vertex: r#"
float zx2 = zx * zx;
float zy2 = zy * zy;
if (zx2 * zy2 > 4.0) {
- float index = 1.0 - float(iter) / float(maxiter);
- f_color = vec4(index, index * 0.5, index, index * 0.5);
+ float index = float(iter) / float(maxiter);
+ f_color = vec4(index, 0.1, 0.5 - index / 2, 0.8 - index);
return;
}
zy = zx * zy * 2.0 + c.y;
}).unwrap();
}
-fn solid_fill_program(display: &glium::Display) -> glium::Program {
- let vertex_shader_src = r#"
- #version 140
- in vec3 position;
- uniform mat4 perspective;
- uniform mat4 view;
- uniform mat4 model;
-
- void main() {
- mat4 modelview = view * model;
- gl_Position = perspective * modelview * vec4(position, 1.0);
- }
- "#;
-
- let fragment_shader_src = r#"
- #version 140
-
- out vec4 color;
-
- void main() {
- color = vec4(1.0, 1.0, 1.0, 1.0);
- }
- "#;
-
- return glium::Program::from_source(display,
- vertex_shader_src,
- fragment_shader_src,
- None).unwrap();
-}
-
-fn bounding_box<U>(display: &glium::Display,
- frame: &mut glium::Frame,
- program: &glium::Program,
- uniforms: &U,
- cube: &Cube) where U: glium::uniforms::Uniforms {
-
- #[derive(Copy, Clone)]
- struct Vertex { position: [f32; 3] }
- implement_vertex!(Vertex, position);
-
- let cube = [
- Vertex { position: [cube.xmin, cube.ymin, cube.zmin] },
- Vertex { position: [cube.xmax, cube.ymin, cube.zmin] },
- Vertex { position: [cube.xmax, cube.ymax, cube.zmin] },
- Vertex { position: [cube.xmin, cube.ymax, cube.zmin] },
- Vertex { position: [cube.xmin, cube.ymin, cube.zmax] },
- Vertex { position: [cube.xmax, cube.ymin, cube.zmax] },
- Vertex { position: [cube.xmax, cube.ymax, cube.zmax] },
- Vertex { position: [cube.xmin, cube.ymax, cube.zmax] },
- ];
- let vb = glium::VertexBuffer::new(display, &cube).unwrap();
-
- let params = glium::DrawParameters {
- depth: glium::Depth {
- test: glium::draw_parameters::DepthTest::IfLess,
- write: true,
- ..Default::default()
- },
- blend: glium::Blend::alpha_blending(),
- ..Default::default()
- };
-
- let front_indices = IndexBuffer::new(display, PrimitiveType::LineLoop,
- &[0, 1, 2, 3u16]).unwrap();
- frame.draw(&vb, &front_indices, program, uniforms, ¶ms).unwrap();
-
- let back_indices = IndexBuffer::new(display, PrimitiveType::LineLoop,
- &[4, 5, 6, 7u16]).unwrap();
- frame.draw(&vb, &back_indices, program, uniforms, ¶ms).unwrap();
-
- let sides_indices = IndexBuffer::new(display, PrimitiveType::LinesList,
- &[0, 4, 1, 5, 2, 6, 3, 7u16]).unwrap();
- frame.draw(&vb, &sides_indices, program, uniforms, ¶ms).unwrap();
-}
-
fn mandel<U>(display: &glium::Display,
frame: &mut glium::Frame,
program: &glium::Program,
//let vb = glium::VertexBuffer::empty_persistent(display, width*height*3).unwrap();
let vb = glium::VertexBuffer::new(display, &v).unwrap();
- let indices = glium::index::NoIndices(glium::index::PrimitiveType::TriangleStrip);
- //let indices = glium::index::NoIndices(glium::index::PrimitiveType::LineStrip);
+ let indices = glium::index::NoIndices(PrimitiveType::TriangleStrip);
+ //let indices = glium::index::NoIndices(PrimitiveType::LineStrip);
//let indices = glium::IndexBuffer::new(display, PrimitiveType::TrianglesList,
// &[0u16, 1, 2]).unwrap();
frame.draw(&vb, &indices, program, uniforms, ¶ms).unwrap();
}
-fn mandelwow(display: &glium::Display,
+pub fn draw(display: &glium::Display,
mut frame: &mut glium::Frame,
program: &glium::Program,
model: [[f32; 4]; 4],
bounds: &Cube,
mandel_w: f32) {
let mut z0 = [mandel_w, 0f32];
- let zres = 50;
+ let zres = 30;
let zmin = bounds.zmin;
let zmax = bounds.zmax;
let zstep = (zmax - zmin) / zres as f32;
let mut zy = zmin;
- for _ in 0..zres {
+ // zres + 1 to reach the other face of the cube (fencepost error)
+ for _ in 0..(zres + 1) {
z0[1] = zy;
zy += zstep;
mandel(&display, &mut frame, &program, &uniforms, bounds, z0);
}
}
-
-fn main() {
- sound::start();
-
- let display = glium::glutin::WindowBuilder::new()
- //.with_dimensions(1024, 768)
- .with_fullscreen(glutin::get_primary_monitor())
- .with_depth_buffer(24)
- .with_vsync()
- .with_title(format!("MandelWow"))
- .build_glium()
- .unwrap();
-
- let program = mandelwow_program(&display);
- let bounding_box_program = solid_fill_program(&display);
-
- let mut camera = support::camera::CameraState::new();
- let mut t: f32 = 0.0;
- let mut pause = false;
- let mut bounding_box_enabled = true;
- let mut fullscreen = true;
-
- support::start_loop(|| {
- camera.update();
-
- if !pause {
- // Increment time
- t += 0.01;
- }
-
- // These are the bounds of the 3D Mandelwow section which we render in 3-space.
- let bounds = Cube {
- xmin: -2.0,
- xmax: 0.7,
- ymin: -1.0,
- ymax: 1.0,
- zmin: -1.2,
- zmax: 1.2,
- };
-
- // Vary the wow factor to slice the Mandelwow along its 4th dimension.
- let wmin = -0.8;
- let wmax = 0.8;
- let wsize = wmax - wmin;
- let wow = (((t * 0.7).sin() + 1.0) / 2.0) * wsize + wmin;
-
- //println!("t={} w={:?} camera={:?}", t, w, camera.get_pos());
-
- let mut frame = display.draw();
- frame.clear_color_and_depth((0.0, 0.0, 0.0, 1.0), 1.0);
-
- let z_trans = -2.0; // Send the model back a little bit so it fits the screen.
- let model = [
- [ t.cos(), t.sin(), 0.0, 0.0],
- [-t.sin(), t.cos(), 0.0, 0.0],
- [ 0.0, 0.0, 1.0, 0.0],
- [ 0.0, 0.0, z_trans, 1.0f32]
- ];
-
- // Draw the bounding box before the fractal, when the Z-buffer is still clear,
- // so the lines behind the semi-translucent areas will be drawn.
- if bounding_box_enabled {
- let uniforms = uniform! {
- model: model,
- view: camera.get_view(),
- perspective: camera.get_perspective(),
- };
- bounding_box(&display, &mut frame, &bounding_box_program, &uniforms, &bounds);
- }
-
- mandelwow(&display, &mut frame, &program, model, &camera, &bounds, wow);
- frame.finish().unwrap();
-
- for ev in display.poll_events() {
- match ev {
- glium::glutin::Event::Closed |
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::Escape)) |
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::Q)) => {
- return support::Action::Stop
- },
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::B)) => {
- bounding_box_enabled ^= true;
- },
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::F)) => {
- fullscreen ^= true;
- if fullscreen {
- glutin::WindowBuilder::new()
- .with_fullscreen(glutin::get_primary_monitor())
- .rebuild_glium(&display).unwrap();
- } else {
- glutin::WindowBuilder::new()
- .rebuild_glium(&display).unwrap();
- }
- },
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::P)) => {
- pause ^= true;
- },
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageUp)) => {
- t += 0.01;
- },
- KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageDown)) => {
- t -= 0.01;
- },
- ev => camera.process_input(&ev),
- }
- }
-
- support::Action::Continue
- });
-
-}
projects / mandelwow.git / blobdiff