Description
PS9 Char-Bitmap class
The following C++ program includes a class called CharBitmap, which is to be completed. CharBitmap
stores a bitmap defined by an array of char. Character code ‘1’ means a black pixel, and other character
codes mean an empty pixel. The class has following member functions in addition to copy constructor
and copy-assignment operator. You can add your own functions.
CharBitmap Constructor
~CharBitmap Destructor
CleanUp This function cleans up the bitmap. Memory chunk allocated for storing the bitmap
must be deleted (returned to the operating system.)
GetWidth Returns the width
GetHeight Returns the height
SetBitmap Makes a bitmap of bmpWid x bmpHei and copies pixels from bmp.
SetPixel Set pixel value to a pixel at (x,y).
Print Prints the contents to the console window.
Draw Draws the bitmap to the graphics window. One pixel in this class must be expanded to
16×16 pixels on the graphics window.
GetPixel Returns the character code at (x,y).
(a) Fill the functions that are not written yet.
(b) Assume that this class will be used by other team members. Add necessary modification to the
code so that CharBitmap class is well protected. Const-qualifiers must be used wherever
appropriate, and copy constructor and copy-assignment operator must be defined.
(c) SetPixel function must not crash if the given coordinate (x,y) are out of the bitmap stored in this
object.
You can download the base code from the Canvas so that you don’t have to type everything by yourself.
You must save the C++ program as ps9.cpp and must be submitted in the Zip file.
Test your code on the compiler server before submitting!
….11….11….
…1..1..1..1…
…1.11..1.11…
…1.11..1.11…
…1.11..1.11…
…1.11..1.11…
…1.11..1.11…
…1.11111.11…
..1……….1..
.1…………1.
1…11….11…1
1…11….11…1
1…………..1
1……11……1
.11……….11.
…1111111111…
(Console Output)
(Graphics window output)
(Base code)
#include <stdio.h>
#include “fssimplewindow.h”
class CharBitmap
{
protected:
int wid,hei;
char *dat;
public:
CharBitmap();
~CharBitmap();
void CleanUp(void);
int GetWidth(void);
int GetHeight(void);
void SetBitmap(int bmpWid,int bmpHei,char bmp[]);
void SetPixel(int x,int y,char c);
void Print(void);
void Draw(void);
char GetPixel(int x,int y);
};
CharBitmap::CharBitmap()
{
// Write this function.
}
CharBitmap::~CharBitmap()
{
// Write this function.
}
void CharBitmap::CleanUp(void)
{
// Write this function.
}
int CharBitmap::GetWidth(void)
{
return wid;
}
int CharBitmap::GetHeight(void)
{
return hei;
}
void CharBitmap::SetBitmap(int bmpWid,int bmpHei,char bmp[])
{
// Write this function.
}
void CharBitmap::SetPixel(int x,int y,char c)
{
// Write this function.
}
void CharBitmap::Print(void)
{
int x,y;
for(y=0; y<hei; y++)
{
for(x=0; x<wid; x++)
{
printf(“%c”,GetPixel(x,y));
}
printf(“\n”);
}
}
void CharBitmap::Draw(void)
{
// Write this function.
}
char CharBitmap::GetPixel(int x,int y)
{
if(0<=x && x<wid && 0<=y && y<hei)
{
return dat[y*wid+x];
}
return 0;
}
int main(void)
{
char pattern[]=
{
“….11….11….”
“…1..1..1..1…”
“…1.11..1.11…”
“…1.11..1.11…”
“…1.11..1.11…”
“…1.11..1.11…”
“…1.11..1.11…”
“…1.11111.11…”
“..1……….1..”
“.1…………1.”
“1…………..1”
“1…………..1”
“1…………..1”
“1……11……1”
“.11……….11.”
“…1111111111…”
};
CharBitmap bmp;
bmp.SetBitmap(16,16,pattern);
bmp.SetPixel(4,10,’1′);
bmp.SetPixel(5,10,’1′);
bmp.SetPixel(4,11,’1′);
bmp.SetPixel(5,11,’1′);
bmp.SetPixel(10,10,’1′);
bmp.SetPixel(11,10,’1′);
bmp.SetPixel(10,11,’1′);
bmp.SetPixel(11,11,’1′);
bmp.Print();
FsOpenWindow(16,16,256,256,1);
while(FSKEY_NULL==FsInkey())
{
FsPollDevice();
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
bmp.Draw();
FsSwapBuffers();
FsSleep(10);
}
return 0;
}
