Function canvas

experimental/tui.h:15–33

template <size_t NROWS, size_t NCOLS>
void canvas(const std::array<char, NROWS * NCOLS> &raster) {
  printf("+");
  for (size_t col = 0; col < NCOLS; ++col) {
    printf("-");
  }
  printf("+\n");
  for (size_t row = 0; row < NROWS; ++row) {
    printf("|");
    for (size_t col = 0; col < NCOLS; ++col) {
      printf("%c", raster[row * NCOLS + col]);
    }
    printf("|\n");
  }
  printf("+");
  for (size_t col = 0; col < NCOLS; ++col) {
    printf("-");
  }
  printf("+\n");
}

// double pendulum rasterizer
void rasterize(float *pos, size_t n, float maxX, float maxY, std::string &screen,