Fixed #10

Turns out, my images were just upside down. Maths coordinates increase from the bottom up, but display coordinates increase from the top down.

Author: programagor

bin/rainbrot-gen

@@ -5,7 +5,7 @@
     fprintf('[%s]   Opening file...\n',datetime);
     f=fopen(sprintf('%s/%d-%d',dir,iters(i),iters(i+1)-1));
     fprintf('[%s]   Reading file...\n',datetime);
-    t=fread(f,dim,'uint64');
+    t=fread(f,dim([2,1]),'uint64');
     fprintf('[%s]   Closing file...\n',datetime);
     fclose(f);
     fprintf('[%s]   Applying transform...\n',datetime);

raindraw.m

@@ -59,7 +59,7 @@ int main (int argc,char** argv)
       function=mandelbrot;
       optimiser=mandelbrot_optimiser;
     }
-  else if(strcmp(args.function,"mandelbrot")==0)
+  else if(strcmp(args.function,"ship")==0)
     {
       function=ship;
       optimiser=no_optimiser;

src/main.c

@@ -116,7 +116,7 @@ void* worker(void *arg_v)
 
           /* increment buffer */
           idx_x=round((creall(Z) - arg->re_min)*( arg->re_size -1)/(arg->re_max-arg->re_min));
-          idx_y=round((cimagl(Z) - arg->im_min)*( arg->im_size -1)/(arg->im_max-arg->im_min));
+          idx_y=arg->im_size - round((cimagl(Z) - arg->im_min)*( arg->im_size -1)/(arg->im_max-arg->im_min));
 
           if(idx_x>=0 && idx_x < arg->re_size && idx_y>=0 && idx_y < arg->im_size)
             {