Create main.cpp

main.cpp

@@ -0,0 +1,95 @@
+#include <iostream>
+#include <fstream>
+#include <stdlib.h>
+using namespace std;
+#define FHEADERSIZE 14
+typedef struct{
+    unsigned short type;
+    unsigned int fSize;
+    unsigned short reserved1;
+    unsigned short reserved2;
+    unsigned int offset;
+}BMPFileHeader;
+typedef struct{
+    unsigned int hSize;
+    int iWidth;
+    int iHeight;
+    unsigned short iPlanes;
+    unsigned short iBPP; //Bits per pixel
+    unsigned int iCompression;
+    unsigned int iSize;
+    int i_xPPM; //Pixel per Meter
+    int i_yPPM;
+    unsigned int iClrs;
+    unsigned int iClrsImp;
+}BMPInfoHeader;
+typedef struct{
+    unsigned char b;
+    unsigned char g;
+    unsigned char r;
+}RGBColor; //24 Bit Color Struct
+int main(void)
+{
+    ofstream bmpfile;
+    bmpfile.open("example.bmp", ios::out | ios::binary | ios::trunc);
+    if(!bmpfile.is_open())
+    {
+        cout << "ERROR: FILE COULD NOT BE OPENED" << endl;
+        return 1;
+    }
+
+    int width = 1024;
+    int height = 1024;
+
+    BMPFileHeader fHeader;   //File Header 
+    fHeader.type = 19778;    //BM
+    fHeader.fSize = FHEADERSIZE + sizeof(BMPInfoHeader) + sizeof(RGBColor)*width*height;   //File Size info
+    fHeader.fSize = sizeof(fHeader) + sizeof(RGBColor);
+    fHeader.reserved1 = 0;
+    fHeader.reserved2 = 0;
+    fHeader.offset = FHEADERSIZE + sizeof(BMPInfoHeader);    //Where we actually start writing the Bitmap data/image
+
+    bmpfile.write((char*)(&fHeader.type), sizeof(fHeader.type));     //Let's start writing the file
+    bmpfile.write((char*)(&fHeader.fSize), sizeof(fHeader.fSize));   //Header information
+    bmpfile.write((char*)(&fHeader.reserved1), sizeof(fHeader.reserved1));
+    bmpfile.write((char*)(&fHeader.reserved2), sizeof(fHeader.reserved2));
+    bmpfile.write((char*)(&fHeader.offset), sizeof(fHeader.offset));
+
+    BMPInfoHeader iHeader;
+    iHeader.hSize = sizeof(BMPInfoHeader);
+    iHeader.iWidth = width;
+    iHeader.iHeight = height;
+    iHeader.iPlanes = 1;
+    iHeader.iBPP = 24;
+    iHeader.iCompression = 0; //Uncompressed
+    iHeader.iSize = width * height * 3;
+    iHeader.i_xPPM = 0;
+    iHeader.i_yPPM = 0;
+    iHeader.iClrs = 0;
+    iHeader.iClrsImp = 0;
+
+    bmpfile.write((char*)&iHeader, sizeof(BMPInfoHeader));   //More Header information being placed in the file
+
+    RGBColor* image;
+    image = new RGBColor[width * height];
+    //Write each R G B value (this will produce color noise - for B&W, make each RGB value the same for every iteration
+    for(int i = 0; i < width * height; i++) 
+    {
+        image[i].r = rand() % 256 + 1;
+        image[i].g = rand() % 256 + 1;
+        image[i].b = rand() % 256 + 1;
+    }
+    //Write our arrays to the file
+    for(int i = 0; i < width * height; i++)
+    {
+        bmpfile.write((char*)&image[i], sizeof(RGBColor));
+    }
+    // remove our temp image array
+
+    delete [] image;
+   // close the file
+
+    bmpfile.close();
+
+    return 0;
+}