- Chuong trinh CAD */
#include <stdio.h>
#include <conio.h>
#include <dos.h>
#include <graphics.h>
#include <math.h>
#include "mouse.inc"
#define MAXOBJECTS 100
#define _LINE 0
#define _CIRCLE 1
#define _ELLIPSE 2
#define _RECTANGLE 3
#define _SQUARE 4
typedef struct tagpoint {
double x, y;
} POINT;
typedef struct tagline {
int x1, y1, x2, y2;
} LINE;
typedef struct tagcircle {
int xc, yc, radius;
} CIRCLE;
typedef struct tagellipse {
int xc, yc, xradius, yradius;
} ELLIPSE;
typedef struct tagrectangle {
int x1, y1, x2, y2;
} RECTANGLE;
typedef struct tagsquare {
int x1, y1, x2, y2;
} SQUARE;
struct object {
int type;
union tagobj {
LINE l;
CIRCLE c;
ELLIPSE e;
RECTANGLE r;
SQUARE s;
} obj;
} doituong[MAXOBJECTS];
int x, y, i, numobj = 0;
unsigned char lbutton = 0, rbutton = 0;
const char *menu[9] = {
"Line",
"Circle",
"Ellipse",
"Rectangle",
"Square",
"-",
"Save",
"-",
"Quit"
};
void getmouse()
{
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
} while (lbutton == 0 && rbutton == 0);
}
void clearmouse()
{
while (lbutton || rbutton)
get_mouse_button(&lbutton, &rbutton, &x, &y);
}
void message(char *s)
{
struct viewporttype view;
int color = getcolor();
setcolor(BLACK);
setfillstyle(SOLID_FILL, BLACK);
getviewsettings(&view);
setviewport(0, 0, getmaxx(), getmaxy(), 1);
bar(1, getmaxy()-19, getmaxx() - 101, getmaxy()-2);
setcolor(WHITE);
outtextxy(4, getmaxy() - 12, s);
setcolor(color);
setviewport(view.left, view.top, view.right, view.bottom, view.clip);
}
void Line()
{
int x1, y1, oldx, oldy;
message("Nhap chuot de chon hai diem dau mut de ve LINE");
clearmouse();
getmouse();
oldx = x1 = x;
oldy = y1 = y;
setwritemode(XOR_PUT);
setcolor(YELLOW);
clearmouse();
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
if (lbutton == 0 && rbutton == 0)
{
if (oldx != x || oldy != y)
{
hide_mouse();
line(x1, y1, oldx, oldy);
oldx = x;
oldy = y;
line(x1, y1, oldx, oldy);
show_mouse();
}
}
} while (lbutton == 0 && rbutton == 0);
doituong[numobj].type = _LINE;
doituong[numobj].obj.l.x1 = x1;
doituong[numobj].obj.l.y1 = y1;
doituong[numobj].obj.l.x2 = x;
doituong[numobj].obj.l.y2 = y;
numobj++;
clearmouse();
setwritemode(COPY_PUT);
}
void Circle()
{
int x1, y1, radius, oldx, oldy;
message("Nhap chuot de chon tam va hai ban kinh de ve ELLPISE");
clearmouse();
getmouse();
oldx = x1 = x;
oldy = y1 = y;
setwritemode(XOR_PUT);
circle(x1, y1, abs(oldx-x1));
clearmouse();
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
if (lbutton == 0 && rbutton == 0)
{
if (oldx != x || oldy != y)
{
hide_mouse();
setcolor(BLACK);
circle(x1, y1, abs(oldx-x1));
oldx = x;
oldy = y;
setcolor(RED);
circle(x1, y1, abs(oldx-x1));
show_mouse();
}
}
} while (lbutton == 0 && rbutton == 0);
doituong[numobj].type = _CIRCLE;
doituong[numobj].obj.c.xc = x1;
doituong[numobj].obj.c.yc = y1;
doituong[numobj].obj.c.radius = abs(oldx-x1);
numobj++;
clearmouse();
setwritemode(COPY_PUT);
}
void Ellipse()
{
int x1, y1, xradius, yradius, oldx, oldy;
message("Nhap chuot de chon tam va ban kinh de ve CIRCLE");
clearmouse();
getmouse();
oldx = x1 = x;
oldy = y1 = y;
setwritemode(XOR_PUT);
ellipse(x1, y1, 0, 360, abs(oldx-x1), abs(oldy-y1));
clearmouse();
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
if (lbutton == 0 && rbutton == 0)
{
if (oldx != x || oldy != y)
{
hide_mouse();
setcolor(BLACK);
ellipse(x1, y1, 0, 360, abs(oldx-x1), abs(oldy-y1));
oldx = x;
oldy = y;
setcolor(GREEN);
ellipse(x1, y1, 0, 360, abs(oldx-x1), abs(oldy-y1));
show_mouse();
}
}
} while (lbutton == 0 && rbutton == 0);
doituong[numobj].type = _ELLIPSE;
doituong[numobj].obj.e.xc = x1;
doituong[numobj].obj.e.yc = y1;
doituong[numobj].obj.e.xradius = abs(oldx-x1);
doituong[numobj].obj.e.yradius = abs(oldy-y1);
numobj++;
clearmouse();
setwritemode(COPY_PUT);
}
void Rectangle()
{
int x1, y1, oldx, oldy;
message("Nhap chuot de chon hai diem dau mut de ve LINE");
clearmouse();
getmouse();
oldx = x1 = x;
oldy = y1 = y;
setwritemode(XOR_PUT);
setcolor(WHITE);
clearmouse();
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
if (lbutton == 0 && rbutton == 0)
{
if (oldx != x || oldy != y)
{
hide_mouse();
rectangle(x1, y1, oldx, oldy);
oldx = x;
oldy = y;
rectangle(x1, y1, oldx, oldy);
show_mouse();
}
}
} while (lbutton == 0 && rbutton == 0);
doituong[numobj].type = _RECTANGLE;
doituong[numobj].obj.r.x1 = x1;
doituong[numobj].obj.r.y1 = y1;
doituong[numobj].obj.r.x2 = x;
doituong[numobj].obj.r.y2 = y;
numobj++;
clearmouse();
setwritemode(COPY_PUT);
}
void Square()
{
int x1, y1, oldx, oldy;
message("Nhap chuot de chon hai diem dau mut de ve SQUARE");
clearmouse();
getmouse();
oldx = x1 = x;
oldy = y1 = y;
setwritemode(XOR_PUT);
setcolor(BLUE);
clearmouse();
do {
get_mouse_button(&lbutton, &rbutton, &x, &y);
if (lbutton == 0 && rbutton == 0)
{
if (oldx != x || oldy != y)
{
hide_mouse();
if (oldx-x1 >= oldy-y1)
rectangle(x1, y1, oldx, oldx-x1+y1);
else
rectangle(x1, y1, oldy-y1+x1, oldy);
oldx = x;
oldy = y;
if (oldx-x1 >= oldy-y1)
rectangle(x1, y1, oldx, oldx-x1+y1);
else
rectangle(x1, y1, oldy-y1+x1, oldy);
show_mouse();
}
}
} while (lbutton == 0 && rbutton == 0);
doituong[numobj].type = _SQUARE;
doituong[numobj].obj.s.x1 = x1;
doituong[numobj].obj.s.y1 = y1;
if (oldx-x1 >= oldy-y1)
{
doituong[numobj].obj.s.x2 = oldx;
doituong[numobj].obj.s.y2 = oldx-x1+y1;
}
else
{
doituong[numobj].obj.s.x2 = oldy-y1+x1;
doituong[numobj].obj.s.y2 = oldy;
}
numobj++;
clearmouse();
setwritemode(COPY_PUT);
}
void UpdateScreen()
{
int i;
setviewport(1, 1, getmaxx() - 101, getmaxy() - 21, 1);
clearviewport();
for (i=0; i<numobj; i++)
switch (doituong[i].type)
{
case _LINE : setcolor(YELLOW);
line(doituong[i].obj.l.x1, doituong[i].obj.l.y1,
doituong[i].obj.l.x2, doituong[i].obj.l.y2);
break;
case _CIRCLE : setcolor(RED);
circle(doituong[i].obj.c.xc, doituong[i].obj.c.yc,
doituong[i].obj.c.radius);
break;
case _ELLIPSE : setcolor(GREEN);
ellipse(doituong[i].obj.e.xc, doituong[i].obj.e.yc, 0, 360,
doituong[i].obj.e.xradius, doituong[i].obj.e.yradius);
break;
case _RECTANGLE : setcolor(WHITE);
rectangle(doituong[i].obj.r.x1, doituong[i].obj.r.y1,
doituong[i].obj.r.x2, doituong[i].obj.r.y2);
break;
case _SQUARE : setcolor(BLUE);
rectangle(doituong[i].obj.s.x1, doituong[i].obj.s.y1,
doituong[i].obj.s.x2, doituong[i].obj.s.y2);
break;
}
setviewport(0, 0, getmaxx(), getmaxy(), 1);
}
void Save()
{
const char filename[] = "CAD.DAT";
FILE *fp;
int i;
if ((fp=fopen(filename, "w+b")) == NULL)
{
message("Khong the tao tap tin CAD.DAT");
return;
}
fwrite(doituong, sizeof(struct object), numobj, fp);
fclose(fp);
}
void run()
{
int done = 0, i;
do {
getmouse();
if (x >= getmaxx() - 90)
{
i = (y - 20) / 16;
setviewport(1, 1, getmaxx() - 101, getmaxy() - 21, 1);
switch (i)
{
case 0 : Line();
break;
case 1 : Circle();
break;
case 2 : Ellipse();
break;
case 3 : Rectangle();
break;
case 4 : Square();
break;
case 6 : Save();
break;
case 8 : done = 1;
break;
}
setviewport(0, 0, getmaxx(), getmaxy(), 1);
UpdateScreen();
}
else
{
}
clearmouse();
} while (!done);
}
void main()
{
int gr_drive = DETECT, gr_mode;
initgraph(&gr_drive, &gr_mode, "");
reset_mouse();
show_mouse();
setcolor(YELLOW);
rectangle(0, 0, getmaxx(), getmaxy());
line(getmaxx() - 100, 0, getmaxx() - 100, getmaxy());
line(0, getmaxy()-20, getmaxx() - 100, getmaxy()-20);
for (i=0; i<9; i++)
if (strcmp(menu[i], "-") == 0)
line(getmaxx() - 90, 20 + i * 16, getmaxx() - 20, 20 + i * 16);
else
outtextxy(getmaxx() - 90, 20 + i * 16, menu[i]);
show_mouse();
run();
closegraph();
}
Tiêu đề: Chuong trinh CAD 
10/07/10, 09:57 pm