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Question about enlarging a bitmap.

Joshua Eirman · 2020-02-19T14:38:03

I have an eight by eight bitmap box (24 bit) with four colors, one in each quadrant. I am trying to enlarge it to sixteen by sixteen. I am concentrating on the blue and green sections. The first attempt looks like this: The second attempt is supposed to double each row and results in this: The pixels do enlarge but the rows are one color, not blue and green. The code is as follows: if ((i % 12 == 0) && (i != 0)) { if (wenthere == 2) { wenthere = 0; i = i - 12; } wenthere++; } And the full code is here: while (1) { count++; i = fgetc(file); if (feof(file)) { fclose(file); break; } } i = 0; file = fopen(r_path, "r"); fseek(file, 54, SEEK_SET); int var3 = 0; do { var3 = fgetc(file); if (feof(file)) { fclose(file); break; } allinthexdecimal[i] = var3; i++; element_index++; } while (1); int j = 0; i = 0; int wenthere = 2; //hex image is 822 - 54 = 768 % 6 % 2 = 64 for (int z = 0; z < 64; z++) { allnewinthexdecimal[j] = allinthexdecimal[(i)]; std::cout << allnewinthexdecimal[j] << " "; allnewinthexdecimal[(j + 1)] = allinthexdecimal[(i + 1)]; std::cout << allnewinthexdecimal[j + 1] << " "; allnewinthexdecimal[(j + 2)] = allinthexdecimal[(i + 2)]; std::cout << allnewinthexdecimal[j + 2] << " "; allnewinthexdecimal[(j + 3)] = allinthexdecimal[(i)]; std::cout << allnewinthexdecimal[j + 3] << " "; allnewinthexdecimal[(j + 4)] = allinthexdecimal[(i + 1)]; std::cout << allnewinthexdecimal[j + 4] << " "; allnewinthexdecimal[(j + 5)] = allinthexdecimal[(i + 2)]; std::cout << allnewinthexdecimal[j + 5] << " "; i = i + 3; j = j + 6; if ((i % 12 == 0) && (i != 0)) { if (wenthere == 2) { wenthere = 0; i = i - 12; } wenthere++; } } i = 96; for (int z = 0; z < 64; z++) { allnewinthexdecimal[j + 0] = allinthexdecimal[i + 0]; allnewinthexdecimal[(j + 1)] = allinthexdecimal[(i + 1)]; allnewinthexdecimal[(j + 2)] = allinthexdecimal[(i + 2)]; allnewinthexdecimal[(j + 3)] = allinthexdecimal[(i+0)]; allnewinthexdecimal[(j + 4)] = allinthexdecimal[(i + 1)]; allnewinthexdecimal[(j + 5)] = allinthexdecimal[(i + 2)]; i = i + 3; j = j + 6; } Any guidance or help would be appreciated. Josheir