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OneB1t/gist:2241cab4aff77b733bc946880e8fbcaa

Last active September 30, 2023 17:55
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bmp generator just with plain java
Raw
gistfile1.txt
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Random;
public class MonochromaticBMPGeneratorWithText {
public static void main(String[] args) {
long start1 = System.currentTimeMillis();
int width = 1280;
int height = 640;
int imageSize = (width + 31) / 32 * 4 * height; // Image size (in bytes)
int pixelDataOffset = 54; // Offset to pixel data
try (FileOutputStream fos = new FileOutputStream("monochromatic_with_text.bmp")) {
// BMP header
fos.write(new byte[] {
'B', 'M', // BMP magic number
0, 0, 0, 0, // File size (dummy)
0, 0, 0, 0, // Reserved
54, 0, 0, 0, // Pixel data offset
40, 0, 0, 0, // Header size
(byte) (width & 0xFF), (byte) ((width >> 8) & 0xFF), 0, 0, // Image width
(byte) (height & 0xFF), (byte) ((height >> 8) & 0xFF), 0, 0, // Image height
1, 0, // Number of color planes
1, 0, // Bits per pixel
0, 0, 0, 0, // Compression method (none)
0, 0, 0, 0, // Image size (dummy)
0, 0, 0, 0, // Horizontal resolution (dummy)
0, 0, 0, 0, // Vertical resolution (dummy)
0, 0, 0, 0, // Number of colors in the palette
0, 0, 0, 0, // Important colors
});
// Palette (black and white)
fos.write(new byte[]{0, 0, 0, 0}); // Black
fos.write(new byte[]{(byte) 255, (byte) 255, (byte) 255, 0}); // White
// Monochrome pixel data (all zeros for a black background)
byte[] pixelData = new byte[imageSize];
// Define the text "HELLO, WORLD!"
Random random = new Random();
String text = "RANDOM VALUE " + random.nextInt(0, 9);
// Calculate the starting X position to center the text horizontally
int textWidth = text.length() * 12; // Assuming each character is 8 pixels wide
int textHeight = 16; // Assuming each character is 8 pixels tall
int x = width / 2 - textWidth - 200;
int y = (height - textHeight) / 2;
// Define the font for characters and numbers
byte[] font = {
// Character 'A'
(byte) 0b00000000,
(byte) 0b00011000,
(byte) 0b00011000,
(byte) 0b00011000,
(byte) 0b00011000,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00111100,
(byte) 0b00100100,
(byte) 0b01100110,
(byte) 0b01000010,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b00000000, // Character 'A'
// Character 'B'
(byte) 0b11111100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'B'
// Character 'C'
(byte) 0b00000000,
(byte) 0b00111110,
(byte) 0b01000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b01000000,
(byte) 0b00111110,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'C'
// Character 'D'
(byte) 0b11111000,
(byte) 0b10000100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000100,
(byte) 0b11111000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'D'
// Character 'E'
(byte) 0b11111110,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111110,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'E'
// Character 'F'
(byte) 0b11111110,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'F'
// Character 'G'
(byte) 0b00000000,
(byte) 0b00111110,
(byte) 0b01000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10001110,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'G'
// Character 'H'
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111110,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'H'
// Character 'I'
(byte) 0b01111100,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b01111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'I'
// Character 'J'
(byte) 0b00111110,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b10001000,
(byte) 0b01110000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'J'
// Character 'K'
(byte) 0b10000010,
(byte) 0b10000100,
(byte) 0b10001000,
(byte) 0b10010000,
(byte) 0b10100000,
(byte) 0b11000000,
(byte) 0b11000000,
(byte) 0b11010000,
(byte) 0b10010000,
(byte) 0b10001000,
(byte) 0b10000100,
(byte) 0b10000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'K'
// Character 'L'
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111110,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'L'
// Character 'M'
(byte) 0b10000001,
(byte) 0b11000011,
(byte) 0b11000011,
(byte) 0b10100101,
(byte) 0b10100101,
(byte) 0b10011001,
(byte) 0b10011001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'M'
// Character 'N'
(byte) 0b10000001,
(byte) 0b11000001,
(byte) 0b11000001,
(byte) 0b10100001,
(byte) 0b10100001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10001001,
(byte) 0b10001001,
(byte) 0b10000101,
(byte) 0b10000101,
(byte) 0b10000011,
(byte) 0b10000011,
(byte) 0b10000001,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'N'
// Character 'O'
(byte) 0b00000000,
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'O'
// Character 'P'
(byte) 0b11111100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111100,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'P'
// Character 'Q'
(byte) 0b00000000,
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10010001,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b00000110,
(byte) 0b00000001,
(byte) 0b00000000, // Character 'Q'
// Character 'R'
(byte) 0b11111100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b11111100,
(byte) 0b10010000,
(byte) 0b10001000,
(byte) 0b10000100,
(byte) 0b10000100,
(byte) 0b10000010,
(byte) 0b10000010,
(byte) 0b10000001,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'R'
// Character 'S'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b01111100,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b10000010,
(byte) 0b01111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'S'
// Character 'T'
(byte) 0b11111111,
(byte) 0b10010010,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'T'
// Character 'U'
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01111110,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'U'
// Character 'V'
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b01000010,
(byte) 0b01000010,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00011000,
(byte) 0b00011000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'V'
// Character 'W'
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b01001010,
(byte) 0b01001010,
(byte) 0b00100100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'W'
// Character 'X'
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b01001010,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b01001010,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'X'
// Character 'Y'
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10010001,
(byte) 0b10010001,
(byte) 0b01001010,
(byte) 0b01001010,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00100100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'Y'
// Character 'Z'
(byte) 0b11111111,
(byte) 0b00000001,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00100000,
(byte) 0b00100000,
(byte) 0b11111111,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character 'Z'
// Character '0'
(byte) 0b00011000,
(byte) 0b00100100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b00100100,
(byte) 0b00011000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '0'
// Character '1'
(byte) 0b00010000,
(byte) 0b00110000,
(byte) 0b01010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b11111111,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00000000, // Character '1'
// Character '2'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b00000001,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000100,
(byte) 0b00001000,
(byte) 0b00010000,
(byte) 0b00100000,
(byte) 0b01000000,
(byte) 0b11111111,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '2'
// Character '3'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b00000001,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00011100,
(byte) 0b00000010,
(byte) 0b00000001,
(byte) 0b00000001,
(byte) 0b10000010,
(byte) 0b01111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '3'
// Character '4'
(byte) 0b00000010,
(byte) 0b00000110,
(byte) 0b00001010,
(byte) 0b00010010,
(byte) 0b00100010,
(byte) 0b01000010,
(byte) 0b01111111,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '4'
// Character '5'
(byte) 0b11111111,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111110,
(byte) 0b00000001,
(byte) 0b00000001,
(byte) 0b00000001,
(byte) 0b00000001,
(byte) 0b10000010,
(byte) 0b01111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '5'
// Character '6'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b10000000,
(byte) 0b11111110,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '6'
// Character '7'
(byte) 0b11111111,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000100,
(byte) 0b00000100,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00001000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00010000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '7'
// Character '8'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000010,
(byte) 0b00111100,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '8'
// Character '9'
(byte) 0b00111100,
(byte) 0b01000010,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b10000001,
(byte) 0b01000011,
(byte) 0b00111111,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000010,
(byte) 0b00000100,
(byte) 0b11111000,
(byte) 0b00000000,
(byte) 0b00000000,
(byte) 0b00000000, // Character '9'
};
// Write the text to the pixel data with rows rotated and characters scaled
for (int i = 0; i < text.length(); i++) {
char character = text.charAt(i);
int fontIndex = (int) character - 'A'; // Assuming your font starts from 'A'
if(Character.isDigit(character))
{
fontIndex += 43;
}
if (fontIndex >= 0 && fontIndex < font.length) {
for (int row = 15; row >= 0; row--) { // Iterate from highest to lowest rows
for (int col = 0; col < 8; col++) {
byte fontByte = font[fontIndex * 16 + row]; // Get the row in reverse order
byte mask = (byte) (1 << (7 - col));
if ((fontByte & mask) != 0) {
// Scale the character 2x horizontally
int pixelX = x + i * 16 + col * 2;
int pixelY = y + (15 - row); // Reverse the row index
int pixelIndex = pixelY * (width / 8) + (pixelX / 8);
int bitOffset = 7 - (pixelX % 8);
pixelData[pixelDataOffset + pixelIndex] |= (byte) (1 << bitOffset);
}
}
}
}
}
// Write the pixel data
fos.write(pixelData);
long end1 = System.currentTimeMillis();
System.out.println("Elapsed Time in milliseconds: "+ (end1-start1) + "ms");
} catch (IOException e) {
e.printStackTrace();
}
}
}
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