AAA的圖學筆記

 

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• 電腦圖學 Week17 2022-06-14
  1. 期末作品繳交方式
  2. 期末作品評分方式
  3. 網友問 push matrix 和 pop matrix 事件
  4. 整學期大複習-示範期末作品怎麼做

• ------------------------------------------------------------

• 重點整理，及老師示範如何完成期末作業。

AAA的圖學筆記

 電腦圖學 Week16 2022-06-07

1. 主題: 內插、動作內插
2. 主題: 攝影機、運鏡 
3. 實作: gluLookAt()

#include <GL/glut.h>
	void reshape(int w,int h)
	{///不能用整數除，長寬比（寬/長）
	float ar = (float)w / (float)h;
	glViewport(0,0,w,h);
	glMatrixMode(GL_PROJECTION);///3D變2D
	glLoadIdentity();
	gluPerspective(60,ar,0.1,100);
	glMatrixMode(GL_MODELVIEW);///3D Model+View
	glLoadIdentity();
	gluLookAt(0,0,3, ///eye位置
	0,0,0, ///center看哪裡
	0,1,0);///up向量
	}
	void display()
	{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glutSolidTeapot(1);
	glutSwapBuffers();
	}
	void motion(int x,int y)
	{
	glMatrixMode(GL_MODELVIEW);///3D Model+View
	glLoadIdentity();
	gluLookAt((x-150)/150.0,(y-150)/150.0,3, ///eye位置
	0,0,0, ///center看哪裡
	0,1,0);///up向量
	glutPostRedisplay();
	}///根據滑鼠移動轉換視角
	int main(int argc,char** argv)
	{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
	glutCreateWindow("week16 camera");
	glutDisplayFunc(display);
	glutMotionFunc(motion);
	glutReshapeFunc(reshape);///初始視角
	glutMainLoop();
	}

AAAA的圖學筆記

 電腦圖學 Week15

1. 播聲音、播MP3

2. 播放動畫、內插

3. 機器人擺動作、跳舞

1-1播聲音

 File-New-Empty File 命名為week15-1_PlaySound

1-2 程式碼

#include <windows.h>

#include <stdio.h>

int main()

{

    printf("PlaySound()之前\n");

    PlaySound("badbad.wav",NULL,SND_SYNC);///假設一個badbad.wav做測試

    printf("PlaySound()之後\n");

}

• 要先在settings->compiler加入winmm才能執行
• 然後再去BBC網站下載免費聲音，在把檔案解壓縮後放到跟week15-1_PlaySound.cpp 一樣位置的資料夾內。https://sound-effects.bbcrewind.co.uk/search

#include <windows.h>
#include <stdio.h>

int main()

{

    PlaySound("07071034.wav", NULL, SND_ASYNC);

    while(1){

        printf("請輸入數字:");

        int N;

        scanf("%d",&N);

        if(N==1) PlaySound("do.wav", NULL, SND_ASYNC);

        if(N==2) PlaySound("re.wav", NULL, SND_ASYNC);

        if(N==3) PlaySound("mi.wav", NULL, SND_ASYNC);

    }

}

*只能用原始大小的wav檔

作業:

#include <GL/glut.h>
	#include <stdio.h>
	float angle[20],oldX=0;
	int angleID=0;
	FILE * fout = NULL, * fin = NULL;
	void myWrite(){
	if(fout == NULL) fout = fopen("file.txt", "w+");
	for(int i=0 ; i<20 ; i++){
	printf(" %.1f ", angle[i]);
	fprintf(fout, " %.1f ",angle[i]);
	}
	printf("\n");
	fprintf(fout,"\n");
	}
	void myread(){
	if(fout != NULL){ fclose(fout); fout=NULL; }
	if(fin == NULL) fin = fopen("file.txt", "r");
	for(int i=0 ; i<20 ; i++){
	fscanf(fin, "%f",&angle[i]);
	}
	glutPostRedisplay();
	}
	void mouse(int Button, int state, int x, int y){
	oldX= x;
	}
	void keyboard (unsigned char key,int x,int y){
	if(key=='s') myWrite(); ///調好動作再存檔
	if(key=='r') myread();
	if(key=='0') angleID=0;
	if(key=='1') angleID=1;
	if(key=='2') angleID=2;
	if(key=='3') angleID=3;
	}
	void motion(int x,int y){
	angle[angleID] += (x-oldX);
	///myWrite();
	oldX = x;
	glutPostRedisplay();
	}
	void display()
	{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glColor3f(1,1,1);
	glRectf(0.3,0.5,-0.3,-0.5);
	glPushMatrix();
	glTranslatef(0.3,0.4,0);
	glRotatef(angle[0],0,0,1);
	glTranslatef(-0.3,-0.4,0);
	glColor3f(1,0,0);
	glRectf(0.3,0.5,0.7,0.3);
	glPushMatrix();
	glTranslatef(0.7,0.4,0);
	glRotatef(angle[1],0,0,1);
	glTranslatef(-0.7,-0.4,0);
	glColor3f(0,1,0);
	glRectf(0.7,0.5,1,0.3);
	glPopMatrix();
	glPopMatrix();
	glPushMatrix();
	glTranslatef(-0.3,0.4,0);
	glRotatef(angle[2],0,0,1);
	glTranslatef(0.3,-0.4,0);
	glColor3f(1,0,0);
	glRectf(-0.3,0.5,-0.7,0.3);
	glPushMatrix();
	glTranslatef(-0.7,0.4,0);
	glRotatef(angle[3],0,0,1);
	glTranslatef(0.7,-0.4,0);
	glColor3f(0,1,0);
	glRectf(-0.7,0.5,-1,0.3);
	glPopMatrix();
	glPopMatrix();
	glutSwapBuffers();
	}
	int main(int argc, char**argv)
	{
	glutInit( &argc, argv );
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
	///glutInitWindowSize(600,600);
	glutCreateWindow("week15-1_angles_TRT_again");
	glutKeyboardFunc(keyboard);
	glutMouseFunc(mouse);
	glutMotionFunc(motion);
	glutDisplayFunc(display);
	glutMainLoop();
	}