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| //msoftcon.cpp
//provides routines to access Windows console functions
//compiler needs to be able to find this file
//in MCV++, /Tools/Options/Directories/Include/type path name
#include "msoftcon.h"
HANDLE hConsole; //console handle
char fill_char; //character used for fill
//--------------------------------------------------------------
void init_graphics()
{
COORD console_size = {80, 25};
//open i/o channel to console screen
hConsole = CreateFile("CONOUT$", GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
0L, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0L);
//set to 80x25 screen size
SetConsoleScreenBufferSize(hConsole, console_size);
//set text to white on black
SetConsoleTextAttribute( hConsole, (WORD)((0 << 4) | 15) );
fill_char = '\xDB'; //default fill is solid block
clear_screen();
}
//--------------------------------------------------------------
void set_color(color foreground, color background)
{
SetConsoleTextAttribute( hConsole,
(WORD)((background << 4) | foreground) );
} //end setcolor()
/* 0 Black 8 Dark gray
1 Dark blue 9 Blue
2 Dark green 10 Green
3 Dark cyan 11 Cyan
4 Dark red 12 Red
5 Dark magenta 13 Magenta
6 Brown 14 Yellow
7 Light gray 15 White
*/
//--------------------------------------------------------------
void set_cursor_pos(int x, int y)
{
COORD cursor_pos; //origin in upper left corner
cursor_pos.X = x - 1; //Windows starts at (0, 0)
cursor_pos.Y = y - 1; //we start at (1, 1)
SetConsoleCursorPosition(hConsole, cursor_pos);
}
//--------------------------------------------------------------
void clear_screen()
{
set_cursor_pos(1, 25);
for(int j=0; j<25; j++)
putch('\n');
set_cursor_pos(1, 1);
}
//--------------------------------------------------------------
void wait(int milliseconds)
{
Sleep(milliseconds);
}
//--------------------------------------------------------------
void clear_line() //clear to end of line
{ //80 spaces
//.....1234567890123456789012345678901234567890
//.....0........1.........2.........3.........4
cputs(" ");
cputs(" ");
}
//--------------------------------------------------------------
void draw_rectangle(int left, int top, int right, int bottom)
{
char temp[80];
int width = right - left + 1;
for(int j=0; j<width; j++) //string of squares
temp[j] = fill_char;
temp[j] = 0; //null
for(int y=top; y<=bottom; y++) //stack of strings
{
set_cursor_pos(left, y);
cputs(temp);
}
}
//--------------------------------------------------------------
void draw_circle(int xC, int yC, int radius)
{
double theta, increment, xF, pi=3.14159;
int x, xN, yN;
increment = 0.8 / static_cast<double>(radius);
for(theta=0; theta<=pi/2; theta+=increment) //quarter circle
{
xF = radius * cos(theta);
xN = static_cast<int>(xF * 2 / 1); //pixels not square
yN = static_cast<int>(radius * sin(theta) + 0.5);
x = xC-xN;
while(x <= xC+xN) //fill two horizontal lines
{ //one for each half circle
set_cursor_pos(x, yC-yN); putch(fill_char); //top
set_cursor_pos(x++, yC+yN); putch(fill_char); //bottom
}
} //end for
}
//--------------------------------------------------------------
void draw_line(int x1, int y1, int x2, int y2)
{
int w, z, t, w1, w2, z1, z2;
double xDelta=x1-x2, yDelta=y1-y2, slope;
bool isMoreHoriz;
if( fabs(xDelta) > fabs(yDelta) ) //more horizontal
{
isMoreHoriz = true;
slope = yDelta / xDelta;
w1=x1; z1=y1; w2=x2, z2=y2; //w=x, z=y
}
else //more vertical
{
isMoreHoriz = false;
slope = xDelta / yDelta;
w1=y1; z1=x1; w2=y2, z2=x2; //w=y, z=x
}
if(w1 > w2) //if backwards w
{
t=w1; w1=w2; w2=t; // swap (w1,z1)
t=z1; z1=z2; z2=t; // with (w2,z2)
}
for(w=w1; w<=w2; w++)
{
z = static_cast<int>(z1 + slope * (w-w1));
if( !(w==80 && z==25) ) //avoid scroll at 80,25
{
if(isMoreHoriz)
set_cursor_pos(w, z);
else
set_cursor_pos(z, w);
putch(fill_char);
}
}
}
//--------------------------------------------------------------
void draw_pyramid(int x1, int y1, int height)
{
int x, y;
for(y=y1; y<y1+height; y++)
{
int incr = y - y1;
for(x=x1-incr; x<=x1+incr; x++)
{
set_cursor_pos(x, y);
putch(fill_char);
}
}
}
//--------------------------------------------------------------
void set_fill_style(fstyle fs)
{
switch(fs)
{
case SOLID_FILL: fill_char = '\xDB'; break;
case DARK_FILL: fill_char = '\xB0'; break;
case MEDIUM_FILL: fill_char = '\xB1'; break;
case LIGHT_FILL: fill_char = '\xB2'; break;
case X_FILL: fill_char = 'X'; break;
case O_FILL: fill_char = 'O'; break;
}
}
//-------------------------------------------------------------- |
(
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