Revision 38:92fad278c2c3, committed 2017-03-08

Comitter:

valavanisalex

Date:

Wed Mar 08 14:12:42 2017 +0000

Parent:

35:2d5931a66fba

Child:

39:5998f0d22113

Commit message:

Added Bitmap class to simplify sprite support

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Bitmap.cpp	Wed Mar 08 14:12:42 2017 +0000
@@ -0,0 +1,34 @@
+#include "Bitmap.h"
+
+#include <iostream>
+
+Bitmap::Bitmap(std::vector<int> const &contents,
+               unsigned int const       height,
+               unsigned int const       width)
+    :
+    _contents(contents),
+    _height(height),
+    _width(width)
+{
+    // Perform a quick sanity check of the dimensions
+    if (contents.size() != height * height) {
+        std::cerr << "Contents of bitmap has size " << contents.size()
+                  << " pixels, but its dimensions were specified as "
+                  << width << " * " << height << " = " << width * height;
+    }
+}
+
+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;
+    }
+
+    // Now return the pixel value, using row-major indexing
+    return _contents[row * _width + column];
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Bitmap.h	Wed Mar 08 14:12:42 2017 +0000
@@ -0,0 +1,30 @@
+#ifndef BITMAP_H
+#define BITMAP_H
+
+#include <vector>
+
+/**
+ * A monochrome bitmap drawing
+ */
+class Bitmap
+{
+private:
+    /**
+     * @brief The contents of the drawing, with pixels stored in row-major order
+     * @details '1' represents a black pixel; '0' represents white
+     */
+    std::vector<int> _contents;
+    
+    unsigned int _height; ///< The height of the drawing in pixels
+    unsigned int _width;  ///< The width of the drawing in pixels
+    
+public:
+    Bitmap(std::vector<int> const &contents,
+           unsigned int const       height,
+           unsigned int const       width);
+
+    int get_pixel(unsigned int const row,
+                  unsigned int const column) const;
+};
+
+#endif // SPRITE_H
\ No newline at end of file