+Bitmap class
+Bitmap file loading +string output using font
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@ -9,7 +9,7 @@ include_directories(src)
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set(LIB_PATH "${CMAKE_SOURCE_DIR}/../library/build")
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include_directories(${LIB_PATH}/include)
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add_executable(TextRenderer ${SOURCES} ${HEADERS})
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add_executable(TextRenderer ${SOURCES} ${HEADERS} src/Bitmap.cpp src/Bitmap.h)
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target_link_libraries(TextRenderer ${LIB_PATH}/lib/liblibrary.a)
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@ -0,0 +1,54 @@
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#include "Bitmap.h"
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#include <fstream>
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#include <iostream>
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Bitmap::Bitmap() {
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offset = 0;
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width = 0;
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height = 0;
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bpp = 0;
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data = nullptr;
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}
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Bitmap::~Bitmap() {
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if(data){
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delete data;
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data = nullptr;
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}
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}
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void Bitmap::load(const std::string &file) {
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std::ifstream stream(file);
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if(stream.is_open()){
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std::string str((std::istreambuf_iterator<char>(stream)),std::istreambuf_iterator<char>());
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data = new char[str.size()];
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for(int i = 0; i < str.size();i++){
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data[i] = str[i];
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}
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offset = *(unsigned int*)(data + 10);
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width = *(unsigned int*)(data + 18);
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height = *(unsigned int*)(data + 22);
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bpp = *(unsigned short*)(data + 28);
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}
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}
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int Bitmap::getWidth() {
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return width;
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}
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int Bitmap::getHeight() {
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return height;
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}
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char *Bitmap::getData() {
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return data + offset;
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}
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int Bitmap::getBitsPerPixel() {
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return bpp;
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}
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char *Bitmap::getPixel(int x, int y) {
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return getData() + ((getHeight() - y) * getWidth() + x) * getBitsPerPixel() / 8;
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}
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@ -0,0 +1,68 @@
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#ifndef TEXTRENDERER_BITMAP_H
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#define TEXTRENDERER_BITMAP_H
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#include <string>
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @brief: Used to load a Bitmap from a file.
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*/
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class Bitmap {
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public:
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Bitmap();
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~Bitmap();
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @brief: Used to load a Bitmap from a file.
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*/
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void load(const std::string &file);
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @return: the width of the image.
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*/
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int getWidth();
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @return: the height of the image
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*/
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int getHeight();
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @return: the pixel data as an byte array
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*/
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char *getData();
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @return: the number of bits uses per pixel
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*/
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int getBitsPerPixel();
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @return: the pixel value by coordinates, (0,0) is on the top left
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*/
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char *getPixel(int x, int y);
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private:
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int width;
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int height;
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int offset;
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int bpp;
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char *data;
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};
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#endif //TEXTRENDERER_BITMAP_H
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52
src/main.cpp
52
src/main.cpp
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@ -1,9 +1,57 @@
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#include <iostream>
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#include "add.h"
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#include "Bitmap.h"
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/*
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* @author: Julian Hinxlage
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* @since: v0.0.0
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* @brief: An image is loaded and used as a font.
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* A string is converted and displayed in the console.
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* Currently only to test.
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*/
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int main() {
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std::cout << "Hello, World!" << std::endl;
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std::cout << add(6,7) << std::endl;
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Bitmap bitmap;
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bitmap.load("../res/font.bmp");
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std::string str = "Hello, World!";
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//values used to calculate the coordinates of the characters
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int xOffset = 1;
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int yOffset = 2;
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int xSize = 6;
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int ySize = 7;
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int xCount = 18;
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int xStart = 0;
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int yStart = 2;
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//print vertical
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//i is the current row
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for (int i = 0; i < ySize; i++) {
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//loop through the characters in the string
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for (char c : str) {
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//index of character(x and y)
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int index = (c - ' ');
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int xIndex = index % xCount;
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int yIndex = index / xCount;
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//character index to pixel index conversion
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int x = xIndex * (xSize + xOffset) + xStart;
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int y = yIndex * (ySize + yOffset) + yStart;
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//print current row of the current character
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for (int j = x; j < x + xSize; j++) {
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auto *pixel = (unsigned int *) bitmap.getPixel(j, i + y);
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if (*pixel == 0) {
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std::cout << " ";
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} else {
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std::cout << "1";
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}
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}
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std::cout << " ";
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}
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std::cout << std::endl;
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}
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return 0;
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}
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