#include "byte_math.h"
#include "pattern.h"

static rgb_t get_rgb(uint32_t time, size_t x)
{
  int r = 0, g = 0, b = 0;

  uint8_t time8 = time & 0xff;
  int w = calc_w(time8 + x * 4);

  r = 0xff;
  g = byte_scale(byte_sin(time8 + x * 2), 0x90);
  b = byte_scale(byte_sin(time8 + x * 2), 0x20);

  rgb_t color;
  color.color = 0;
  color.r = clip(r + w);
  color.g = clip(byte_scale(g, AS_BYTE(0.75)) + w);
  color.b = clip(byte_scale(b, AS_BYTE(0.75)) + w);
  return color;
}

static void reset(void)
{
}

__attribute__((__section__(".patterns"))) volatile static pattern_t pat =
    ((pattern_t){.get_rgb = get_rgb, .name = "CandyCane", .reset = reset});