nx_geo_raster_gate.nx source

1// nx_geo_raster_gate.nx -- GATE for GEO-020 raster render (integer scanline fill) on an 8x8 grid: 2// rectangle [rows 1..4) x [cols 1..5) -> filled count == 3*4 == 12; (2,2) filled, (0,0) & (5,5) empty 3// right triangle (0,0),(0,4),(4,0) -> filled count == 4+3+2+1 == 10 (triangular number); 4// (0,0) & (0,3) filled, (3,3) empty 5// Exact integer pixel counts -> deterministic coverage, no float seam/overlap. 6// 7// Evidence -> knowledge/status/geo_raster.log (GEORASTERGATE authored=organ ... verdict=GREEN). 8// license_tier: ORIGINAL 9import "nx_geo_raster.nx" 10import "nx_syscalls.nx" 11 12const GR_LOG: *u8 = "knowledge/status/geo_raster.log" 13 14func gr_w(fd: i64, s: *u8) -> i64 { var n: i64 = 0; while s[n] != (0 as u8) { n = n + 1 } sys_write(fd, s, n); return 0 } 15func gr_wn(fd: i64, v: i64) -> i64 { let bb: *u8 = sys_mmap(28); var m: i64=v; if m<0 {m=0-m; sys_write(fd,"-" as *u8,1)}; let t: *u8 = sys_mmap(28); var k: i64=0; if m==0 {t[0]=48;k=1}; while m>0 {t[k]=(48+(m%10)) as u8; m=m/10; k=k+1}; var i: i64=0; while i<k {bb[i]=t[k-1-i]; i=i+1}; sys_write(fd, bb, k); return 0 } 16 17func gr_set(p: *i64, i: i64, y: i64, x: i64) -> i64 { p[i * 2] = y; p[i * 2 + 1] = x; return 0 } 18 19func gr_emit(fd: i64, rc: i64, tc: i64, ok: i64) -> i64 { 20 gr_w(fd, "GEORASTERGATE authored=organ method=integer-scanline-fill rect_count=" as *u8); gr_wn(fd, rc) 21 gr_w(fd, " triangle_count=" as *u8); gr_wn(fd, tc) 22 if ok == 1 { gr_w(fd, " verdict=GREEN\n" as *u8) } else { gr_w(fd, " verdict=RED\n" as *u8) } 23 return 0 24} 25 26func main() -> i64 { 27 let w: i64 = 8 28 let h: i64 = 8 29 let grid: *u8 = sys_mmap(w * h) 30 31 // rectangle [rows 1..4) x [cols 1..5) 32 let rect: *i64 = sys_mmap(8 * 8) as *i64 33 gr_set(rect, 0, 1, 1) 34 gr_set(rect, 1, 1, 5) 35 gr_set(rect, 2, 4, 5) 36 gr_set(rect, 3, 4, 1) 37 let rc: i64 = geo_raster_fill(rect, 4, w, h, grid) 38 let r_in: i64 = geo_raster_get(grid, w, 2, 2) // inside -> 1 39 let r_out0: i64 = geo_raster_get(grid, w, 0, 0) // row 0 not active -> 0 40 let r_out5: i64 = geo_raster_get(grid, w, 5, 5) // outside -> 0 41 42 // right triangle (0,0),(0,4),(4,0) 43 let tri: *i64 = sys_mmap(8 * 6) as *i64 44 gr_set(tri, 0, 0, 0) 45 gr_set(tri, 1, 0, 4) 46 gr_set(tri, 2, 4, 0) 47 let tc: i64 = geo_raster_fill(tri, 3, w, h, grid) 48 let t_in0: i64 = geo_raster_get(grid, w, 0, 0) // inside -> 1 49 let t_in3: i64 = geo_raster_get(grid, w, 0, 3) // row0 fills cols 0..3 -> 1 50 let t_out: i64 = geo_raster_get(grid, w, 3, 3) // outside hypotenuse -> 0 51 52 var ok: i64 = 1 53 if rc != 12 { ok = 0 } 54 if r_in != 1 { ok = 0 } 55 if r_out0 != 0 { ok = 0 } 56 if r_out5 != 0 { ok = 0 } 57 if tc != 10 { ok = 0 } 58 if t_in0 != 1 { ok = 0 } 59 if t_in3 != 1 { ok = 0 } 60 if t_out != 0 { ok = 0 } 61 62 gr_emit(1, rc, tc, ok) 63 let lf: i64 = sys_openat_append(GR_LOG, 420) 64 if lf >= 0 { gr_emit(lf, rc, tc, ok); sys_close(lf) } 65 66 if ok == 1 { return 0 } 67 return 1 68}