ascjulia.c and ascbrot.c

[veekoo]

This is current state of coding. Pictures added.

[lb3361]

Using the console directly instead of putchar() avoids the buffering effect and allows you to change colors and x/y positions.

Code: Select all

  ...
  /* Unchanged code above */
  if(x+y < 4) {     /* Why x+y < 4 btw? */
    return i;
  }
  return 1;
}

#include <gigatron/console.h>

void main(void) {
  int x, y, data;
  float sx, sy;
   
  for(y = 0; y < HEIGHT; y = y + YSTEP ) {
    for(x = 0; x < WIDTH; x = x + XSTEP ) {
      sx = SCALE * (WIDTH/2.0 - x) / (WIDTH/2.0);
      sy = SCALE * (HEIGHT/2.0 - y) / (HEIGHT/2.0);
      data = julia(sx, sy);
      console_state.cx = x;
      console_state.cy = y;
      console_state.fgbg = (((data-48)*6+1) & 0x3f) << 8;
      console_print((char*)&data, 1);
    }
  }
}

giving

Screenshot from 2021-09-15 21-10-47.png (11.76 KiB) Viewed 10600 times

[veekoo]

Cool. Very colorful.

A couple of things in code that might be considered. Testing things takes time. Best place is start testing is with ascii-versions, graphics versions take hours to draw the screen.

[veekoo]

Latest sources and executables can be found at github:

[veekoo]

Ascii fractal development has gone to solid version (ROMV4). Goal of code is to give full support for standard Gigatron TTL machine with stable rom. I hope many other coders publish some version of their programs for standard machine too.

[veekoo]

I have gone to ROMv6 era. So here is all in one ascii fractal program.

It has 3 diffrent fractals to choose from: Mandelbrot, Julia and Burning Ship

[veekoo]

Recompiled and faster? Works with 32K RAM and ROMv6. These are all-in-one programs with small changes.