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Diff: Bitmap.cpp
- Revision:
- 50:a97b1765c3e3
- Parent:
- 49:93355c01e261
--- a/Bitmap.cpp Mon Mar 19 13:44:23 2018 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,96 +0,0 @@
-#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);
- }
- }
-}
\ No newline at end of file