static public string[] convert_to_ASCII_art(byte[] greyscale_bytes, int width, int height)
{
Image_Sizes image_size = calculate_image_tier(width);
if (image_tier == null)
{
image_tier = image_size;
}
if (initialized == null ||
!initialized ||
(initialized && image_size != image_tier))
{
initialize_ASCII_hashes(image_size);
}
// convert the byte array into a two dimensional array of bytes
byte[][] grey_bytes = new byte[height][];
int byte_index = 0;
for (int i = 0; i < height; i++)
{
grey_bytes[i] = new byte[width];
for (int j = 0; j < width; j++)
{
grey_bytes[i][j] = greyscale_bytes[byte_index++];
}
}
// get the ByteGrid of the greyscale bytes
int remaining_height;
int remaining_width;
ByteGrid[][] byte_grid_grid = create_byte_grid_grid(grey_bytes, out remaining_height, out remaining_width);
// get the hashes for all the pixel grids
uint[][] hashes = hash_byte_grid(byte_grid_grid);
// convert all hashes to strings
// ERROR TESTING
// make it so that if an image is very small, it uses bare bones,
// if it's small to x_large, use all hashes, but pass in the correct
// folder to take the ASCII pics from
//string[] ASCII_lines = null;
//if (image_tier == Image_Sizes.ICON)
//{
// ASCII_lines = shade_ASCII(grey_bytes);
//}
//else
//{
// ASCII_lines = all_hashes_to_ASCII(hashes);
//}
//string[] ASCII_lines = bare_bones_ASCII(grey_bytes);
string[] ASCII_lines = shade_ASCII(grey_bytes);
return(ASCII_lines);
}
public static string[] convert_to_ASCII_art(byte[] greyscale_bytes, int width, int height)
{
Image_Sizes image_size = calculate_image_tier(width);
if (image_tier == null)
{
image_tier = image_size;
}
if(initialized == null
|| !initialized
|| (initialized && image_size != image_tier))
{
initialize_ASCII_hashes(image_size);
}
// convert the byte array into a two dimensional array of bytes
byte[][] grey_bytes = new byte[height][];
int byte_index = 0;
for(int i = 0; i < height; i++){
grey_bytes[i] = new byte[width];
for(int j = 0; j < width; j++){
grey_bytes[i][j] = greyscale_bytes[byte_index++];
}
}
// get the ByteGrid of the greyscale bytes
int remaining_height;
int remaining_width;
ByteGrid[][] byte_grid_grid = create_byte_grid_grid(grey_bytes, out remaining_height, out remaining_width);
// get the hashes for all the pixel grids
uint[][] hashes = hash_byte_grid(byte_grid_grid);
// convert all hashes to strings
// ERROR TESTING
// make it so that if an image is very small, it uses bare bones,
// if it's small to x_large, use all hashes, but pass in the correct
// folder to take the ASCII pics from
//string[] ASCII_lines = null;
//if (image_tier == Image_Sizes.ICON)
//{
// ASCII_lines = shade_ASCII(grey_bytes);
//}
//else
//{
// ASCII_lines = all_hashes_to_ASCII(hashes);
//}
//string[] ASCII_lines = bare_bones_ASCII(grey_bytes);
string[] ASCII_lines = shade_ASCII(grey_bytes);
return ASCII_lines;
}
private static Image_Sizes calculate_image_tier(int width)
{
Image_Sizes image_tier;
if ((Image_Sizes)width < Image_Sizes.SMALL)
{
image_tier = Image_Sizes.ICON;
}
else if ((Image_Sizes)width < Image_Sizes.MEDIUM)
{
image_tier = Image_Sizes.SMALL;
}
else if ((Image_Sizes)width < Image_Sizes.LARGE)
{
image_tier = Image_Sizes.MEDIUM;
}
else if ((Image_Sizes)width < Image_Sizes.X_LARGE)
{
image_tier = Image_Sizes.LARGE;
}
else
{
image_tier = Image_Sizes.X_LARGE;
}
return image_tier;
}
public static void initialize_ASCII_hashes(Image_Sizes image_size)
{
// get the folder
StringBuilder path_builder = new StringBuilder(System.Environment.CurrentDirectory);
if (image_size == Image_Sizes.SMALL)
{
path_builder.Append("\\ASCII_Characters_Small\\");
}
else if (image_size == Image_Sizes.MEDIUM)
{
path_builder.Append("\\ASCII_Characters_Medium\\");
}
else if (image_size == Image_Sizes.LARGE)
{
path_builder.Append("\\ASCII_Characters_Large\\");
}
else if (image_size == Image_Sizes.X_LARGE)
{
path_builder.Append("\\ASCII_Characters_X_Large\\");
}
else
{
throw new ArgumentException("ASCII_Converter: Invalid image size for ASCII hash initialization.");
}
// record the image tier
image_tier = image_size;
ASCII_Characters = new char[] {'!', '"', '#', '$', '%', '&', '\'', '(', ')', '*',
'+', ',', '-', '.', '/', '0', '1', '2', '3', '4',
'5', '6', '7', '8', '9', ':', ';', '<', '=', '>',
'?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R',
'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\',
']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
' ', '{', '|', '}'
};
string[] files = {"exclamation_mark", "quotation_mark", "hashtag", "dollar_sign", "percent", "ampersans", "apostrophe", "left_parenthesis", "right_parenthesis", "asterisk",
"plus_sign", "comma", "minus_sign", "period", "forward_slash", "zero", "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine", "colon", "semicolon", "less_than_symbol", "equals_sign", "greater_than_symbol",
"question_mark", "at_symbol", "A", "B", "C", "D", "E", "F", "G", "H",
"I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "left_square_bracket", "backslash",
"right_square_bracket", "carrot", "underscore", "single_quote_mark", "lowercase_a", "lowercase_b", "lowercase_c", "lowercase_d", "lowercase_e", "lowercase_f",
"lowercase_g", "lowercase_h", "lowercase_i", "lowercase_j", "lowercase_k", "lowercase_l", "lowercase_m", "lowercase_n", "lowercase_o", "lowercase_p",
"lowercase_q", "lowercase_r", "lowercase_s", "lowercase_t", "lowercase_u", "lowercase_v", "lowercase_w", "lowercase_x", "lowercase_y", "lowercase_z",
"space", "left_bracket", "vertical_line", "right_bracket"
};
ASCII_hashes = new uint[ASCII_Characters.Length];
for(int i = 0; i < ASCII_Characters.Length; i++){
BinaryFileReader file_reader = new BinaryFileReader(files[i] + ".png", path_builder.ToString());
PNG_Decoder png_decoder = new PNG_Decoder(file_reader.file_data);
byte[] file_bytes = png_decoder.to_greyscale();
for(int byte_index = 0; byte_index < file_bytes.Length; byte_index++){
ASCII_hashes[i] = ASCII_hashes[i] << 1;
if (file_bytes[byte_index] < 100)
{
ASCII_hashes[i] += 1;
}
//ASCII_hashes[i] += file_bytes[byte_index];
}
}
initialized = true;
}
static public void initialize_ASCII_hashes(Image_Sizes image_size)
{
// get the folder
StringBuilder path_builder = new StringBuilder(System.Environment.CurrentDirectory);
if (image_size == Image_Sizes.SMALL)
{
path_builder.Append("\\ASCII_Characters_Small\\");
}
else if (image_size == Image_Sizes.MEDIUM)
{
path_builder.Append("\\ASCII_Characters_Medium\\");
}
else if (image_size == Image_Sizes.LARGE)
{
path_builder.Append("\\ASCII_Characters_Large\\");
}
else if (image_size == Image_Sizes.X_LARGE)
{
path_builder.Append("\\ASCII_Characters_X_Large\\");
}
else
{
throw new ArgumentException("ASCII_Converter: Invalid image size for ASCII hash initialization.");
}
// record the image tier
image_tier = image_size;
ASCII_Characters = new char[] { '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*',
'+', ',', '-', '.', '/', '0', '1', '2', '3', '4',
'5', '6', '7', '8', '9', ':', ';', '<', '=', '>',
'?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R',
'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\',
']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
' ', '{', '|', '}' };
string[] files = { "exclamation_mark", "quotation_mark", "hashtag", "dollar_sign", "percent", "ampersans", "apostrophe", "left_parenthesis", "right_parenthesis", "asterisk",
"plus_sign", "comma", "minus_sign", "period", "forward_slash", "zero", "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine", "colon", "semicolon", "less_than_symbol", "equals_sign", "greater_than_symbol",
"question_mark", "at_symbol", "A", "B", "C", "D", "E", "F", "G", "H",
"I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "left_square_bracket", "backslash",
"right_square_bracket", "carrot", "underscore", "single_quote_mark", "lowercase_a", "lowercase_b", "lowercase_c", "lowercase_d", "lowercase_e", "lowercase_f",
"lowercase_g", "lowercase_h", "lowercase_i", "lowercase_j", "lowercase_k", "lowercase_l", "lowercase_m", "lowercase_n", "lowercase_o", "lowercase_p",
"lowercase_q", "lowercase_r", "lowercase_s", "lowercase_t", "lowercase_u", "lowercase_v", "lowercase_w", "lowercase_x", "lowercase_y", "lowercase_z",
"space", "left_bracket", "vertical_line", "right_bracket" };
ASCII_hashes = new uint[ASCII_Characters.Length];
for (int i = 0; i < ASCII_Characters.Length; i++)
{
BinaryFileReader file_reader = new BinaryFileReader(files[i] + ".png", path_builder.ToString());
PNG_Decoder png_decoder = new PNG_Decoder(file_reader.file_data);
byte[] file_bytes = png_decoder.to_greyscale();
for (int byte_index = 0; byte_index < file_bytes.Length; byte_index++)
{
ASCII_hashes[i] = ASCII_hashes[i] << 1;
if (file_bytes[byte_index] < 100)
{
ASCII_hashes[i] += 1;
}
//ASCII_hashes[i] += file_bytes[byte_index];
}
}
initialized = true;
}
