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All there but errors need fixing
Gamepad2/Bitmap.cpp
- Committer:
- el18rs
- Date:
- 2020-05-22
- Revision:
- 1:35dba0833c7d
File content as of revision 1:35dba0833c7d:
#include "Bitmap.h" #include <iostream> #include "N5110.h" Bitmap::Bitmap(int const *contents, unsigned int const height, unsigned int const width) : _contents(std::vector<int>(height*width)), _height(height), _width(width) { // Perform a quick sanity check of the dimensions if (_contents.size() != height * width) { std::cerr << "Contents of bitmap has size " << _contents.size() << " pixels, but its dimensions were specified as " << width << " * " << height << " = " << width * height << std::endl; } for(unsigned int i = 0; i < height*width; ++i) _contents[i] = contents[i]; } /** * @returns the value of the pixel at the given position */ int Bitmap::get_pixel(unsigned int const row, unsigned int const column) const { // First check that row and column indices are within bounds if(column >= _width || row >= _height) { std::cerr << "The requested pixel with index " << row << "," << column << "is outside the bitmap dimensions: " << _width << "," << _height << std::endl; } // Now return the pixel value, using row-major indexing return _contents[row * _width + column]; } /** * @brief Prints the contents of the bitmap to the terminal */ void Bitmap::print() const { for (unsigned int row = 0; row < _height; ++row) { // Print each element of the row for (unsigned int column = 0; column < _width; ++column) { int pixel = get_pixel(row, column); std::cout << pixel; } // And then terminate with a new-line character std::cout << std::endl; } } /** * @brief Renders the contents of the bitmap onto an N5110 screen * * @param[in] lcd The screen to use for rendering * @param[in] x0 The horizontal position in pixels at which to render the bitmap * @param[in] y0 The vertical position in pixels at which to render the bitmap * * @details Note that x0, y0 gives the location of the top-left of the bitmap on * the screen. * This function only updates the buffer on the screen. You still need * to refresh the screen in order to actually see the bitmap. */ void Bitmap::render(N5110 &lcd, unsigned int const x0, unsigned int const y0) const { // Loop through each row of the bitmap image for (unsigned int bitmap_row = 0; bitmap_row < _height; ++bitmap_row) { // Row index on the screen for rendering the row of pixels unsigned int screen_row = y0 + bitmap_row; // Render each pixel in the row for (unsigned int bitmap_col = 0; bitmap_col < _width; ++bitmap_col) { // Column index on the screen for rendering this pixel int screen_col = x0 + bitmap_col; // Find the required value of the pixel at the given location within // the bitmap data and then write it to the LCD screen int pixel = get_pixel(bitmap_row, bitmap_col); lcd.setPixel(screen_col, screen_row, pixel); } } }