- Hien thi 3D (khong gian ba chieu) */
#include <conio.h>
#include <graphics.h>
#include <math.h>
typedef struct {
double x, y, z;
} Point3D;
double yaw, roll, pitch, depth;
static Point3D p[] = {
{-35.0, -35.0, 35.0},
{35.0, -35.0, 35.0},
{35.0, 35.0, 35.0},
{-35.0, 35.0, 35.0},
{-35.0, -35.0, 35.0},
{-35.0, -35.0, -35.0},
{35.0, -35.0, -35.0},
{35.0, 35.0, -35.0},
{-35.0, 35.0, -35.0},
{-35.0, -35.0, -35.0}
};
void show_3d(Point3D p[], int n)
{
double sinyaw, cosyaw, sinroll, cosroll, sinpitch, cospitch,
yawx, yawy, rollx, rollz, pitchx, pitchy, pitchz, sx, sy;
int r;
cleardevice();
sinyaw = sin(yaw);
cosyaw = cos(yaw);
sinroll = sin(roll);
cosroll = cos(roll);
sinpitch = sin(pitch);
cospitch = cos(pitch);
for (r=0; r<n; r++)
{
yawx = (cosyaw * p[r].x) - (sinyaw * p[r].y);
yawy = (sinyaw * p[r].x) + (cosyaw * p[r].y);
rollx = (cosroll * yawx) + (sinroll * p[r].z);
rollz = (cosroll * p[r].z) - (sinroll * p[r].z);
pitchy = (cospitch * yawy) - (sinpitch * rollz);
pitchz = (sinpitch * yawy) + (cospitch * rollz);
sx = depth * (rollx+5) / (pitchy+250);
sy = depth * (pitchz-5) / (pitchy+250);
if (r == 0)
moveto(sx+getmaxx() / 2, sy + getmaxy() / 2);
else
lineto(sx+getmaxx() / 2, sy+getmaxy() / 2);
}
}
void main()
{
int gr_drive = DETECT, gr_mode, c=0;
initgraph(&gr_drive, &gr_mode, "");
yaw = 5.7;
roll = 6.3;
pitch = 5.9;
depth = 360;
while (c != 27)
{
show_3d(p, 10);
c = getch();
if (c==0)
c = getch();
switch (c)
{
case 75 : yaw -= 0.1;
break;
case 77 : yaw += 0.1;
break;
case 72 : pitch -= 0.1;
break;
case 80 : pitch += 0.1;
break;
}
}
closegraph();
}
Tiêu đề: Hien thi 3D (khong gian ba chieu) 
10/07/10, 09:50 pm