weeeeeeeeeeeeeeeeeeeeeeeeeeek14

播放聲音，並利用時間間隔持續撥放。

#include <GL/glut.h>

#include <mmsystem.h>///NOW (0)發聲音

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSwapBuffers();

}

void timer(int t)///NOW (2)

{

    glutTimerFunc(1000, timer, 0);///NOW2//每個間隔

    PlaySoundA("duck.wav", NULL, SND_ASYNC);///NOW (2)

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);///大一點

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(1000, timer, 0);///NOW (1)//一開始隔幾秒放第一個

    glutMainLoop();

}

#include <GL/glut.h>

#include <mmsystem.h>///NOW (0)發聲音

#include <stdio.h>///NOW3 for printf()

float angle=0;///NOW4

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();///NOW4

        glRotatef(angle, 0, 0, 1);///NOW4

        glutSolidTeapot( 0.3 );///NOW4

    glPopMatrix();///NOW4

    glutSwapBuffers();

}

void timer(int t)///NOW (2)

{

    glutTimerFunc(30, timer, t+1);///NOW4 ///NOW3 一起床,馬上撥下一個鬧鐘, 時間才會準

    printf("現在的 timer(t)的t是: %d\n", t);///NOW3

    angle = t;///NOW4

    glutPostRedisplay();///NOW4 要更新畫面

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);///大一點

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(1000, timer, 0);///NOW (1)

    glutMainLoop();

}

用內插法(靠近舊的或靠近新的)來做動畫

#include <GL/glut.h>
#include <mmsystem.h>///NOW (0)發聲音
#include <stdio.h>///NOW3 for printf()
float angle=0;///NOW4
float nowX=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();///NOW4
        //glRotatef(angle, 0, 0, 1);///NOW4
        glTranslatef(nowX,0,0);
        glutSolidTeapot( 0.3 );///NOW4
    glPopMatrix();///NOW4
    glutSwapBuffers();
}
void timer(int t)///NOW (2)
{
    glutTimerFunc(33, timer, t+1);///NOW4 ///NOW3 一起床,馬上撥下一個鬧鐘, 時間才會準
    printf("現在的 timer(t)的t是: %d\n", t);///NOW3
    //angle = t;///NOW4
    float alpha =(t%30)/30.0;//變alpha 0.0~1.0
    glutPostRedisplay();///NOW4 要更新畫面
    nowX=alpha*1.0+(1-alpha)*-1.0;
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///大一點
    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);
    glutTimerFunc(1000, timer, 0);///NOW (1)

    glutMainLoop();
}