ref: f89c25789fc5e3ea793d417b8a6cf70f5a5c7740
parent: d4fa0493e43ad94c1f419d162e0d1ab224a33cf5
author: glenda <glenda@narshaddaa>
date: Mon May 1 03:01:28 EDT 2023
active drawing process works!
--- a/main.c
+++ b/main.c
@@ -1,10 +1,17 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
-#include "memdraw.h"
+#include <memdraw.h>
+#include "bitart.h"
#define NPIXELS 4032
+#define H 32
+#define W 126
+#define NDRAWFUNCS 7
+typedef int drawfunc(int x, int x);
+int h, w;
+
void
usage(void)
{@@ -11,12 +18,20 @@
sysfatal("usage: %s [ -f subfont ] text", argv0);}
-void
+// unloadimage will replace data in the image
+// so we build a new image as we unbuild the current one
+// free the old image
+// return the new image ptr
+Memimage*
writeuncompressed(int fd, Memimage *m)
{char chanstr[32];
int bpl, y, j;
uchar *buf;
+ Memimage *out;
+ Rectangle r;
+
+ out = allocmemimage(Rect(0, 0, w, h), GREY1);
if(chantostr(chanstr, m->chan) == nil)
sysfatal("can't convert channel descriptor: %r");@@ -28,29 +43,77 @@
if(buf == nil)
sysfatal("malloc failed: %r"); for(y=m->r.min.y; y<m->r.max.y; y++){- j = unloadmemimage(m, Rect(m->r.min.x, y, m->r.max.x, y+1), buf, bpl);
+ r = Rect(m->r.min.x, y, m->r.max.x, y+1);
+ j = unloadmemimage(m, r, buf, bpl);
+ loadmemimage(out, r, buf, bpl);
if(j != bpl)
sysfatal("image unload failed → %r");- //if(write(fd, buf, bpl) != bpl)
+
if(write(fd, buf, bpl) != bpl)
sysfatal("wu write failed → %r");}
+
free(buf);
+ freememimage(m);
+
+ return out;
}
+int
+ob0(int x, int y)
+{+ return ((-((-y) ^ (-x))) % (-((x - y) / (x / x)))) % 12;
+}
+int
+ob1(int x, int y)
+{+ return ((-((y^23)|(x%2)))-(((~y)*(~y))%((-x)+(y*x))))%7;
+}
+
+int
+ob2(int x, int y)
+{+ return ((-((x+23)-(-x)))%(~(~(14-y))))%6;
+}
+
+int
+ob3(int x, int y)
+{+ return ((-(-(x|x)))%(((-x)^(y+x))/((y/x)-(x^x))))%3;
+}
+
+int
+ob4(int x, int y)
+{+ return (((~(x/y))*(-(-y)))-(-((y-y)|(-x))))%11;
+}
+
+int
+ob5(int x, int y)
+{+ return (((-(y|y))/((-y)+(y&x)))/(((y*y)&(~x))+((x/y)&(13&x))))%4;
+}
+
+int
+drand(int, int)
+{+ return ntruerand(2);
+}
+
+
void
main(int argc, char **argv)
{Memimage *img;
# 126 x 32 oled ⇒ 4032 pixels
- int h,w,i;
+ int i;
h = 32;
w = 126;
long ms;
- ms = 1000;
- Point topleft;
- double angle;
+ ms = 100;
+ //Point topleft;
+ //double angle;
//angle = 0.0;
Rectangle pixel;
pixel.min.x = -1;
@@ -59,6 +122,16 @@
pixel.max.x = 2;
char *path;
path = "/mnt/reform/kbdoled";
+ //u8int fb[H][W]; // framebuffer
+ drawfunc *tab[NDRAWFUNCS] = {+ ob0,
+ ob1,//general kenobi! *growls* << "hello there"
+ ob2,
+ ob3,
+ ob4,
+ ob5,
+ drand,
+ };
Rectangle r;
int fd;
@@ -71,43 +144,61 @@
if (memimageinit())
sysfatal("memimageinit failed: %r");- for(;;){+ for(i = 0;; i++){+ if(i >= NDRAWFUNCS)
+ i = 0;
+ print("i=%d\n", i);+
+
+ // clear rectangle brush position
r.min.x = 0;
r.min.y = 0;
r.max.x = 1;
- r.max.y = 1;
- angle = truerand();
+ r.max.y = 1;
- fd = open(path, OWRITE);
- if(fd < 0){- sysfatal("could not open kbdoled file → %r");- }
-
+ // clear the screen
img = allocmemimage(Rect(0, 0, w, h), GREY1);
if (!img)
sysfatal("cannot allocate memimage: %r");memfillcolor(img, DBlack);
- topleft.y = 0;
- topleft.x = 0;
- for(i=0;i<w;i+=3){- r.min.x = abs(i%w);
- r.min.y = abs(((int)(50.0*sin(angle*PI/180)))%h);
- r.max.x = r.min.x+1;
- r.max.y = r.min.y+1;
- //fprint(2, "(x=%d,y=%d) to (x=%d,y=%d)\n", r.min.x, r.min.y, r.max.x, r.max.y);
+ /* call the independent drawing routine of choice */
- memimagedraw(img, r, memwhite, ZP, nil, ZP, SoverD);
-
- angle+=5;
+ //angle = truerand();
+
+ int y, x;
+ for(y = 0; y < h; y++){+ fd = open(path, OWRITE);
+ if(fd < 0){+ sysfatal("could not open kbdoled file → %r");+ }
+
+
+ for(x = 0; x < w; x++){+ Memimage *todraw = memblack;
+ if(tab[i](x, y))
+ todraw = memwhite;
+
+ r.min.x = x;
+ r.min.y = y;
+
+ r.max.x = r.min.x+1;
+ r.max.y = r.min.y+1;
+
+ memimagedraw(img, r, todraw, ZP, nil, ZP, SoverD);
+
+ }
+ img = writeuncompressed(fd, img);
+
+ // flush
+ fd = close(fd);
+ if(fd < 0)
+ sysfatal("close failed → %r");+ sleep(ms);
}
- writeuncompressed(fd, img);
freememimage(img);
- fd = close(fd);
- if(fd < 0)
- sysfatal("close failed → %r");sleep(ms);
}