week12 林郁珊

(1)小考TRT觀念

(2)上周PlaySound ,MP3播放

※切記要把音檔丟入freeglut/bin資料夾裡
 還要至下載CMP3_MCI.h放入week12_mp3資料夾

放在main()外面
#include "CMP3_MCI.h"
CMP3_MCI myMP3;
int a;
放在main()裡面
myMP3.Load("123.mp3");
myMP3.Play();

(3)主題：計時器Timer

#include <windows.h>//因為mmsystem.h需要windows.h
#include <mmsystem.h>//多媒體系統,才會有PlaySound
void timer(int t)
{
    glutTimerFunc(1000,timer,t+1); //一秒鐘彈一下
    PlaySound("Do.wav",NULL,SND_ASYNC);
}
放在main()裡面
glutTimerFunc(5000,timer,0);//會先延遲5秒鐘

(4)主題:線性內插

公式：alpha*新+(1-alpha)*舊alpha0.0~1.0

畫茶壺，套用公式讓茶壺自動旋轉

#include <GL/glut.h>
#include <stdio.h>
float angle=0,oldAngle=0,newAngle=90;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(angle,0,0,1);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
void timer(int t)
{
    glutTimerFunc(1000,timer,t+1);
    float alpha =(t)/30.0;
    angle =newAngle *alpha + oldAngle*(1-alpha);
    glutPostRedisplay();
}
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");
    glutTimerFunc(0,timer,0);
    glutDisplayFunc(display);
    glutMainLoop();

}