C~電腦圖學日誌 Week15

Week15

week15-1_PlaySound

1. 安裝freeglut，複製libfreeglut.a改成libglut32.a

2. 開新專案week15-1_PlaySound

    將音檔放在C槽

```cpp

#include <windows.h>    ///一定要在第1行

int main(int argc, char *argv[])

{

    PlaySound("C:/mykbeat.wav", NULL, SND_ASYNC);

}

```cpp

3. 比較SND_SYNC    VS    SND_ASYNC

///NULL空指標 (代表可以決定音樂要套在哪個物件上)

PlaySound("C:/Do.wav", NULL, SND_SYNC); ///沒有A同步等待(當下只有播音樂

PlaySound("C:/mykbeat.wav", NULL, SND_ASYNC);///有A不同步/不等待(播音樂加上執行後面的程式

week15-2_PlaySound_empty

1. 精簡版

2. 改成SND_ASYNC一執行就結束(因為後面沒程式了)

    ///可以用scanf/(輸入)來卡著

    

    ///把檔案都放在同目錄

    ///改設定和把音檔、freeglut.dll放入同資料夾

改week15-1_PlaySound

1. 新增案鍵控制Do Re Mi

    ///  改成預設目錄

2. 註解掉原本的Do Re Mi

week15-3_CMP3_MCI

1. 開新專案week15-3_CMP3_MCI

2. CMP3_MCI.h、sone.mp3、freeglut.dll放同目錄    並改目錄

3. 使用CMP3_MCI.h來讀音樂與播放

#include "CMP3_MCI.h"///要放資料夾中

CMP3_MCI myMP3;///宣告一個物件變數

int main(int argc, char *argv[])

{

    myMP3.Load("song.mp3");

    myMP3.Play();

}

week15-4_mouse_motion_translate_rotate

1. 開新專案week15-4_mouse_motion_translate_rotate

2. 用GLUT    11行程式來改

#include <GL/glut.h>

float angleX[10]={}, angleY[10]={};

float teapotX=0, teapotY=0;///

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int oldX = 0 ,oldY = 0;

void mouse(int button, int state, int x, int y){

    oldX = x;

    oldY = y;

}

void motion(int x,int y){

    teapotX += (x-oldX)/150.0;

    teapotY -= (y-oldY)/150.0;

    oldX = x;

    oldY = y;

    glutPostRedisplay();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week15-4_mouse_motion_translate_rotate");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

3.輸出移動後茶壺的XY座標 

#include <stdio.h>

printf("glTranslatef(%.3f, %.3f, 0):\n", teapotX, teapotY);

4. 新增茶壺轉動點 

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidSphere(0.02, 30, 30);///秀中心點

    glPushMatrix();

        ///glTranslatef(teapotX, teapotY, 0);

        glRotatef(angleX[0], 0, 0, 1);

        glTranslatef(-0.520, -0.133, 0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x,int y){

    ///teapotX += (x-oldX)/150.0;

    ///teapotY -= (y-oldY)/150.0;

    ///printf("glTranslatef(%.3f, %.3f, 0):\n", teapotX, teapotY);

    angleX[0] += (x - oldX);

    oldX = x;

    oldY = y;

    glutPostRedisplay();

}

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