ref: d4fa0493e43ad94c1f419d162e0d1ab224a33cf5
author: glenda <glenda@narshaddaa>
date: Wed Apr 26 10:15:57 EDT 2023
base from oledimations
--- /dev/null
+++ b/main.c
@@ -1,0 +1,115 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include "memdraw.h"
+
+#define NPIXELS 4032
+
+void
+usage(void)
+{+ sysfatal("usage: %s [ -f subfont ] text", argv0);+}
+
+void
+writeuncompressed(int fd, Memimage *m)
+{+ char chanstr[32];
+ int bpl, y, j;
+ uchar *buf;
+
+ if(chantostr(chanstr, m->chan) == nil)
+ sysfatal("can't convert channel descriptor: %r");+ fprint(fd, "%11s %11d %11d %11d %11d ",
+ chanstr, m->r.min.x, m->r.min.y, m->r.max.x, m->r.max.y);
+
+ bpl = bytesperline(m->r, m->depth);
+ buf = malloc(bpl);
+ 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);
+ 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);
+}
+
+
+void
+main(int argc, char **argv)
+{+ Memimage *img;
+ # 126 x 32 oled ⇒ 4032 pixels
+ int h,w,i;
+ h = 32;
+ w = 126;
+ long ms;
+ ms = 1000;
+ Point topleft;
+ double angle;
+ //angle = 0.0;
+ Rectangle pixel;
+ pixel.min.x = -1;
+ pixel.min.y = 1;
+ pixel.max.y = 2;
+ pixel.max.x = 2;
+ char *path;
+ path = "/mnt/reform/kbdoled";
+
+ Rectangle r;
+ int fd;
+
+ ARGBEGIN{+ default:
+ usage();
+ }ARGEND;
+
+ if (memimageinit())
+ sysfatal("memimageinit failed: %r");+
+ for(;;){+ r.min.x = 0;
+ r.min.y = 0;
+ r.max.x = 1;
+ r.max.y = 1;
+ angle = truerand();
+
+ fd = open(path, OWRITE);
+ if(fd < 0){+ sysfatal("could not open kbdoled file → %r");+ }
+
+ 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);
+
+ memimagedraw(img, r, memwhite, ZP, nil, ZP, SoverD);
+
+
+ angle+=5;
+ }
+
+ writeuncompressed(fd, img);
+ freememimage(img);
+ fd = close(fd);
+ if(fd < 0)
+ sysfatal("close failed → %r");+
+ sleep(ms);
+ }
+
+}
\ No newline at end of file
--- /dev/null
+++ b/mkfile
@@ -1,0 +1,6 @@
+</$objtype/mkfile
+
+TARG=oledimations
+OFILES=main.$O
+
+</sys/src/cmd/mkone