week14_showshowshow的筆記

1.主題:計時器

#include <GL/glut.h>
#include <mmsystem.h>
#include <stdio.h>
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
void timer(int t)
{
    glutTimerFunc(1000,timer,t+1);
    printf("t=%d",t);
    PlaySoundA("bird.wav",NULL,SND_ASYNC);
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);
    glutTimerFunc(1000,timer,0);
    glutMainLoop();
}

2.主題:內插公式

3.主題:動畫

#include <GL/glut.h>

#include <mmsystem.h>

float angle=0;

float nowX=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(nowX,0,0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)

{

    ///1000 ms =1 sec,30 ms =1/33 sec,33 fps

    glutTimerFunc(30,timer,t+1);

    float alpha=(t%33)/33.0;///alpha內插

    nowX=alpha*1+(1-alpha)*-1;

    alpha+=1;

    glutPostRedisplay();///系統重繪畫面

    PlaySoundA("bird.wav",NULL,SND_ASYNC);

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);

    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(1000,timer,0);

    glutMainLoop();

}

4.上週hw問題回覆

5.期末作品