(DA) Internet of Things and Smart Electronics- ELE3006M2122 / Mbed 2 deprecated Project-Target-Localization

Resit Target Localisation Ciaran Kane 18689005

Dependencies:   mbed

Bitmap/Bitmap.cpp@7:acf82069b794, 23 months ago (annotated)

Committer:
ciarankane123
Date:
Thu Aug 25 13:50:39 2022 +0000
Revision:
7:acf82069b794
Final Code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ciarankane123 7:acf82069b794 1 #include "Bitmap.h"
ciarankane123 7:acf82069b794 2
ciarankane123 7:acf82069b794 3 #include <iostream>
ciarankane123 7:acf82069b794 4
ciarankane123 7:acf82069b794 5 #include "N5110.h"
ciarankane123 7:acf82069b794 6
ciarankane123 7:acf82069b794 7 Bitmap::Bitmap(int const *contents,
ciarankane123 7:acf82069b794 8 unsigned int const height,
ciarankane123 7:acf82069b794 9 unsigned int const width)
ciarankane123 7:acf82069b794 10 :
ciarankane123 7:acf82069b794 11 _contents(std::vector<int>(height*width)),
ciarankane123 7:acf82069b794 12 _height(height),
ciarankane123 7:acf82069b794 13 _width(width)
ciarankane123 7:acf82069b794 14 {
ciarankane123 7:acf82069b794 15 // Perform a quick sanity check of the dimensions
ciarankane123 7:acf82069b794 16 if (_contents.size() != height * width) {
ciarankane123 7:acf82069b794 17 std::cerr << "Contents of bitmap has size " << _contents.size()
ciarankane123 7:acf82069b794 18 << " pixels, but its dimensions were specified as "
ciarankane123 7:acf82069b794 19 << width << " * " << height << " = " << width * height << std::endl;
ciarankane123 7:acf82069b794 20 }
ciarankane123 7:acf82069b794 21
ciarankane123 7:acf82069b794 22 for(unsigned int i = 0; i < height*width; ++i) _contents[i] = contents[i];
ciarankane123 7:acf82069b794 23 }
ciarankane123 7:acf82069b794 24
ciarankane123 7:acf82069b794 25 /**
ciarankane123 7:acf82069b794 26 * @returns the value of the pixel at the given position
ciarankane123 7:acf82069b794 27 */
ciarankane123 7:acf82069b794 28 int Bitmap::get_pixel(unsigned int const row,
ciarankane123 7:acf82069b794 29 unsigned int const column) const
ciarankane123 7:acf82069b794 30 {
ciarankane123 7:acf82069b794 31 // First check that row and column indices are within bounds
ciarankane123 7:acf82069b794 32 if(column >= _width || row >= _height)
ciarankane123 7:acf82069b794 33 {
ciarankane123 7:acf82069b794 34 std::cerr << "The requested pixel with index " << row << "," << column
ciarankane123 7:acf82069b794 35 << "is outside the bitmap dimensions: " << _width << ","
ciarankane123 7:acf82069b794 36 << _height << std::endl;
ciarankane123 7:acf82069b794 37 }
ciarankane123 7:acf82069b794 38
ciarankane123 7:acf82069b794 39 // Now return the pixel value, using row-major indexing
ciarankane123 7:acf82069b794 40 return _contents[row * _width + column];
ciarankane123 7:acf82069b794 41 }
ciarankane123 7:acf82069b794 42
ciarankane123 7:acf82069b794 43 /**
ciarankane123 7:acf82069b794 44 * @brief Prints the contents of the bitmap to the terminal
ciarankane123 7:acf82069b794 45 */
ciarankane123 7:acf82069b794 46 void Bitmap::print() const
ciarankane123 7:acf82069b794 47 {
ciarankane123 7:acf82069b794 48 for (unsigned int row = 0; row < _height; ++row)
ciarankane123 7:acf82069b794 49 {
ciarankane123 7:acf82069b794 50 // Print each element of the row
ciarankane123 7:acf82069b794 51 for (unsigned int column = 0; column < _width; ++column)
ciarankane123 7:acf82069b794 52 {
ciarankane123 7:acf82069b794 53 int pixel = get_pixel(row, column);
ciarankane123 7:acf82069b794 54 std::cout << pixel;
ciarankane123 7:acf82069b794 55 }
ciarankane123 7:acf82069b794 56
ciarankane123 7:acf82069b794 57 // And then terminate with a new-line character
ciarankane123 7:acf82069b794 58 std::cout << std::endl;
ciarankane123 7:acf82069b794 59 }
ciarankane123 7:acf82069b794 60 }
ciarankane123 7:acf82069b794 61
ciarankane123 7:acf82069b794 62 /**
ciarankane123 7:acf82069b794 63 * @brief Renders the contents of the bitmap onto an N5110 screen
ciarankane123 7:acf82069b794 64 *
ciarankane123 7:acf82069b794 65 * @param[in] lcd The screen to use for rendering
ciarankane123 7:acf82069b794 66 * @param[in] x0 The horizontal position in pixels at which to render the bitmap
ciarankane123 7:acf82069b794 67 * @param[in] y0 The vertical position in pixels at which to render the bitmap
ciarankane123 7:acf82069b794 68 *
ciarankane123 7:acf82069b794 69 * @details Note that x0, y0 gives the location of the top-left of the bitmap on
ciarankane123 7:acf82069b794 70 * the screen.
ciarankane123 7:acf82069b794 71 * This function only updates the buffer on the screen. You still need
ciarankane123 7:acf82069b794 72 * to refresh the screen in order to actually see the bitmap.
ciarankane123 7:acf82069b794 73 */
ciarankane123 7:acf82069b794 74 void Bitmap::render(N5110 &lcd,
ciarankane123 7:acf82069b794 75 unsigned int const x0,
ciarankane123 7:acf82069b794 76 unsigned int const y0) const
ciarankane123 7:acf82069b794 77 {
ciarankane123 7:acf82069b794 78 // Loop through each row of the bitmap image
ciarankane123 7:acf82069b794 79 for (unsigned int bitmap_row = 0; bitmap_row < _height; ++bitmap_row)
ciarankane123 7:acf82069b794 80 {
ciarankane123 7:acf82069b794 81 // Row index on the screen for rendering the row of pixels
ciarankane123 7:acf82069b794 82 unsigned int screen_row = y0 + bitmap_row;
ciarankane123 7:acf82069b794 83
ciarankane123 7:acf82069b794 84 // Render each pixel in the row
ciarankane123 7:acf82069b794 85 for (unsigned int bitmap_col = 0; bitmap_col < _width; ++bitmap_col)
ciarankane123 7:acf82069b794 86 {
ciarankane123 7:acf82069b794 87 // Column index on the screen for rendering this pixel
ciarankane123 7:acf82069b794 88 int screen_col = x0 + bitmap_col;
ciarankane123 7:acf82069b794 89
ciarankane123 7:acf82069b794 90 // Find the required value of the pixel at the given location within
ciarankane123 7:acf82069b794 91 // the bitmap data and then write it to the LCD screen
ciarankane123 7:acf82069b794 92 int pixel = get_pixel(bitmap_row, bitmap_col);
ciarankane123 7:acf82069b794 93 lcd.setPixel(screen_col, screen_row, pixel);
ciarankane123 7:acf82069b794 94 }
ciarankane123 7:acf82069b794 95 }
ciarankane123 7:acf82069b794 96 }