nx_gassim.nx

buildroot/runtime/nx_gassim.nx

6922 B133 linesdepth 0pulls 0 transitivereach 2 importersview sourcekind librarytopic gassim

docs dependencies structs consts functions

about

nx_gassim.nx -- Simulates elastic collisions and motion of particles in a 2D box to demonstrate kinetic theory and thermalization.

dependencies 0 imports · 2 importers

imports: none

imported by: nx_gassim_gate.nxnx_sim_film_gate.nx

structs

none

consts

2	const O_MAGIC_1600: i64 = 1600
3	const O_MAGIC_3200: i64 = 3200
4	const O_MAGIC_2000: i64 = 2000
5	const O_MAGIC_3600: i64 = 3600
6	const O_MAGIC_4096: i64 = 4096
16	const W: i64 = 256
17	const H: i64 = 256
18	const O_FB: i64 = 0 // framebuffer W*H i64 packed-RGB
19	const N: i64 = 20 // particles
20	const O_PX: i64 = 524288 // px[N] (sim coords, box 0..BW)
21	const O_PY: i64 = 524448
22	const O_VX: i64 = 524608
23	const O_VY: i64 = 524768
24	const O_COL: i64 = 524928 // [0] cumulative collision count
25	const O_STEP: i64 = 524936 // [0] step counter
26	const BW: i64 = 16000 // sim box width/height
27	const RAD: i64 = 240 // particle radius (sim units)
28	const TWO_R2: i64 = 230400 // (2*RAD)^2
29	const STEPS_PER_TICK: i64 = 2

functions

31	func rgb(r: i64, g: i64, b: i64) -> i64 { return (r & 255) \| ((g & 255) << 8) \| ((b & 255) << 16) } called by 1: render_impl
32	func isqrt(N0: i64) -> i64 { if N0<2 { return N0 } var x: i64=N0; var y: i64=(x+1)/2; while y<x { x=y; y=(x + N0/x)/2 } return x } called by 1: render_impl
34	func putpx(base: i64, px: i64, py: i64, c: i64) -> i64 called by 1: disc
38	func disc(base: i64, px: i64, py: i64, r: i64, c: i64) -> i64 called by 1: render_impl calls 1: putpx
45	func clear_fb(base: i64, c: i64) -> i64 { let fb: i64=(base+O_FB) as i64; var i: i64=0; while i<W*H { fb[i]=c; i=i+1 } return 0 } called by 1: render_impl
48	func rdiv(num: i64, den: i64) -> i64 { if num>=0 { return (num + den/2)/den } return 0 - ((0-num + den/2)/den) } called by 1: step_one_impl
50	func energy(base: i64) -> i64 called by 1: main
55	func init_impl(base: i64) -> i64 called by 4: tick_impl init main main
73	func step_one_impl(base: i64) -> i64 called by 2: tick_impl main calls 1: rdiv
106	func tick_impl(base: i64, cmd: i64) -> i64 called by 2: tick main calls 2: init_impl step_one_impl
112	func render_impl(base: i64) -> i64 called by 3: render main main calls 4: clear_fb rgb isqrt disc
127	func ww() -> i64 { return W } called by 1: main
128	func hh() -> i64 { return H } called by 1: main
129	func fb_off() -> i64 { return O_FB } called by 1: main
130	func init() -> i64 { return init_impl(0) } calls 1: init_impl
131	func tick(cmd: i64) -> i64 { return tick_impl(0, cmd) } calls 1: tick_impl
132	func render() -> i64 { return render_impl(0) } calls 1: render_impl
133	func mem_bytes() -> i64 { return O_STEP + O_MAGIC_4096 }