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Đến từ : TP Hồ Chí Minh
 | Tiêu đề: dong ho chuan bai cua Thay  Sat Dec 12, 2009 6:56 pm | |
| #include
#include
#include
#include "glut.h"
#define pi 3.141592653589
// -------------------------------------
// CAC HAM XU SU KIEN
// -------------------------------------
// khoi tao thong so
void OnInit();
// ham su kien ve
void OnDraw();
// ham su kien nhan phim
void OnKey(unsigned char key,int x, int y);
void hinhvuong(int x, int y);
void hinhtron(int x, int y, int r);
void giay (int x, int y, int x1, int y1 );
void phut(int x, int y, int x1, int y1);
void gio(int x, int y , int x1,int y1);
void onsize(int w, int h);
void VeDongHo(int hh,int mm,int ss);
// -------------------------------------
// KHAI BAO CAC HAM VA BIEN
// -------------------------------------
int main(int argc, char* argv[])
{
// -------------------------------------
// KHOI TAO CUA SO OPENGL
// -------------------------------------
// khoi tao tham so cua so
glutInit(&argc, argv);
// che do hien thi: double buffer va he mau RGB
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
// do rong, cao cua cua so
glutInitWindowSize(480, 480);
// vi tri bat dau cua so
glutInitWindowPosition(0, 0);
// tao cua so
glutCreateWindow("Bai Mau!");
// -------------------------------------
// CAC THAO TAC XU LY
// -------------------------------------
// -------------------------------------
// DANG KY SU KIEN
// -------------------------------------
// dang ky su kien ve
glutDisplayFunc(OnDraw);
glutReshapeFunc(onsize);
// dang ky su kien nhan phim
glutKeyboardFunc(OnKey);
glutIdleFunc(OnDraw);
// -------------------------------------
// VONG LAP SU KIEN
// -------------------------------------
glutMainLoop();
return 0;
}
void OnInit()
{
// thiet lap mau xoa
glClearColor(1.0,1.0,1.0,1.0);
}// OnInit
void hinhvuong(int x, int y)
{
glColor3ub(255,0,255);
glBegin(GL_POLYGON);
glVertex2i(x,y);
glVertex2i(x,-y);
glVertex2i(-x, -y);
glVertex2i(-x, y);
glEnd();
}
void hinhtron(int x, int y, int r)
{
float xi, yi;
int n= 1000;
float da= 2*pi/n;
glBegin(GL_LINE_LOOP);
for(int i=0;i {
xi = x + r*cos(i*da);
yi = y + r*sin(i*da);
glVertex2f(xi,yi);
}
glEnd();
}
void OnDraw()
{
// xoa man hinh
glClear(GL_COLOR_BUFFER_BIT);
// cac thao tac ve
glPushMatrix();
glColor3ub(255,0,0);
time_t now = time(NULL);
tm *pTime = localtime(&now);
glTranslatef(200,200,0);
glScalef(50,50,0);
VeDongHo(pTime->tm_hour,pTime->tm_min,pTime->tm_sec);
glPopMatrix();
// ket xuat ra man hinh
glFlush();
// chuyen tien canh sang hau canh va nguoc lai (double buffer)
glutSwapBuffers();
}// Display
void OnKey(unsigned char key,int x, int y)
{
switch(key)
{
case 3: // (Ctrl+C)
case 27: // (ESC)
exit(0);
break;
}// switch key
}// OnKey
void onsize(int w, int h)
{
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0,w,0,h);
}
void gio(int x, int y , int x1, int y1)
{
glColor3ub(250,0,0);
glBegin(GL_LINES);
glVertex2i(x,y);
glVertex2i(x1,y1);
glEnd();
}
void phut(int x, int y, int x1, int y1)
{
glColor3ub(250,0,0);
glBegin(GL_LINES);
glVertex2i(x,y);
glVertex2i(x1, y1);
glEnd();
}
void giay (int x, int y, int x1, int y1 )
{
glColor3ub(250,0,0);
glBegin(GL_LINES);
glVertex2i(x,y);
glVertex2i(x1, y1);
glEnd();
}
void VeDongHo(int hh,int mm,int ss)
{
glPushMatrix();
glColor3f(1,1,1);
hinhtron(0,0,1);
for(int i=0;i<12;i++)
{
glBegin(GL_LINES);
glVertex2f(0,1);
glVertex2f(0,0.9);
glEnd();
glRotatef(30,0,0,1);
}
glPushMatrix();
glColor3ub(255,0,0);
glRotatef(-hh*(360/12.0),0,0,1);
glBegin(GL_LINES);
glVertex2f(0,0);
glVertex2f(0,0.4);
glEnd();
glPopMatrix();
glPushMatrix();
glColor3ub(255,255,0);
glRotatef(-mm*(360/60.0),0,0,1);
glBegin(GL_LINES);
glVertex2f(0,0);
glVertex2f(0,0.6);
glEnd();
glPopMatrix();
glPushMatrix();
glColor3ub(255,0,255);
glRotatef(-ss*(360/60.0),0,0,1);
glBegin(GL_LINES);
glVertex2f(0,0);
glVertex2f(0,0. ;
glEnd();
glPopMatrix();
glPopMatrix();
}// VeDongHo | |
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