2020電腦圖學A: (*^ω^*) 喵～Week14

➽檔案開啟、寫檔

開啟 CodeBlocks 新建一個檔案(.cpp檔)
寫入程式:

#include <stdio.h>
int main()
{
FILE * fout=fopen("檔名.txt","w+");///write+有就寫檔，沒有就創一個
printf("Hello world!\n");
fprintf(fout,"Hello world in file.\n");
}

試試 for 迴圈看看會變成怎樣

#include <stdio.h>
int main()
{
FILE * fout=fopen("檔名2.txt","w+");
for(int i=0; i<20; i++){
printf("Hello %d\n",i);
fprintf(fout,"Hello %d\n",i);
}
}

練習開檔存檔

#include <stdio.h>
int angle[10];
int main()
{
FILE * fout=fopen("檔名2.txt","w+");
for(int i=0; i<20; i++){
printf("%d ",angle[i]);
fprintf(fout,"%d ",angle[i]);///數字不要黏在一起，+空格
}
printf("\n");
fprintf(fout, "\n");///要好看~
}

➽多個關節(複習)

先將關節都準備好!!

#include <GL/glut.h>
int angle[10]={0,0,0,0,0, 0,0,0,0,0};
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色
glutSolidTeapot(0.2);///身體
glPushMatrix();///右側
glTranslatef(0.2, 0,0 );
glRotatef(angle[0], 0,0,1);
glTranslatef(0.2, 0,0 );
glColor3f(1,0,0);///紅色
glutSolidTeapot(0.2);///右上手臂
glPushMatrix();
glTranslatef(0.2, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(0.2, 0,0);
glColor3f(1,1,0);///黃色
glutSolidTeapot(0.2);///右下手臂
glPopMatrix();
glPopMatrix();///右側
glPushMatrix();///左側
glTranslatef(-0.2, 0,0 );
glRotatef(angle[2], 0,0,1);
glTranslatef(-0.2, 0,0 );
glColor3f(0,1,0);///綠色
glutSolidTeapot(0.2);///左上手臂
glPushMatrix();
glTranslatef(-0.2, 0,0);
glRotatef(angle[3], 0,0,1);
glTranslatef(-0.2, 0,0);
glColor3f(0,0,1);///藍色
glutSolidTeapot(0.2);///左下手臂
glPopMatrix();
glPopMatrix();///右側
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("Week14 file");
glutDisplayFunc(display);
glutMainLoop();
}

加入上禮拜的(用鍵盤控制關節轉動)

#include <GL/glut.h>
int angle[10]={0,0,0,0,0, 0,0,0,0,0};
int angleID=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色
glutSolidTeapot(0.2);///身體
glPushMatrix();///右側
glTranslatef(0.2, 0,0 );
glRotatef(angle[0], 0,0,1);
glTranslatef(0.2, 0,0 );
glColor3f(1,0,0);///紅色
glutSolidTeapot(0.2);///右上手臂
glPushMatrix();
glTranslatef(0.2, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(0.2, 0,0);
glColor3f(1,1,0);///黃色
glutSolidTeapot(0.2);///右下手臂
glPopMatrix();
glPopMatrix();///右側
glPushMatrix();///左側
glTranslatef(-0.2, 0,0 );
glRotatef(angle[2], 0,0,1);
glTranslatef(-0.2, 0,0 );
glColor3f(0,1,0);///綠色
glutSolidTeapot(0.2);///左上手臂
glPushMatrix();
glTranslatef(-0.2, 0,0);
glRotatef(angle[3], 0,0,1);
glTranslatef(-0.2, 0,0);
glColor3f(0,0,1);///藍色
glutSolidTeapot(0.2);///左下手臂
glPopMatrix();
glPopMatrix();///右側
glutSwapBuffers();
}
int oldX, oldY;
void mouse(int button, int state, int x, int y)
{
oldX=x; oldY=y;
}
void motion(int x, int y)
{
angle[angleID] += (x-oldX);
oldX = x;
glutPostRedisplay();
}
void keyboard(unsigned char key, int x, int y)///按鍵盤數字控制關節
{
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("Week14 file");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutKeyboardFunc(keyboard);
glutMainLoop();
}

[0]右上手臂[1]右下手臂[2]左上手臂[3]左下手臂

➽整合:動作存檔

將上面兩組程式碼合併

#include <GL/glut.h>
#include <stdio.h>
FILE * fout=NULL;
int angle[10]={0,0,0,0,0, 0,0,0,0,0};
int angleID=0;
void saveall()
{
if(fout==NULL) fout=fopen("motion.txt","w+");
for(int i=0; i<4; i++){
printf("%d ",angle[i]);
fprintf(fout,"%d ",angle[i]);
}
printf("\n");
fprintf(fout, "\n");
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色
glutSolidTeapot(0.2);///身體
glPushMatrix();///右側
glTranslatef(0.2, 0,0 );
glRotatef(angle[0], 0,0,1);
glTranslatef(0.2, 0,0 );
glColor3f(1,0,0);///紅色
glutSolidTeapot(0.2);///右上手臂
glPushMatrix();
glTranslatef(0.2, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(0.2, 0,0);
glColor3f(1,1,0);///黃色
glutSolidTeapot(0.2);///右下手臂
glPopMatrix();
glPopMatrix();///右側
glPushMatrix();///左側
glTranslatef(-0.2, 0,0 );
glRotatef(angle[2], 0,0,1);
glTranslatef(-0.2, 0,0 );
glColor3f(0,1,0);///綠色
glutSolidTeapot(0.2);///左上手臂
glPushMatrix();
glTranslatef(-0.2, 0,0);
glRotatef(angle[3], 0,0,1);
glTranslatef(-0.2, 0,0);
glColor3f(0,0,1);///藍色
glutSolidTeapot(0.2);///左下手臂
glPopMatrix();
glPopMatrix();///右側
glutSwapBuffers();
}
int oldX, oldY;
void mouse(int button, int state, int x, int y)
{
oldX=x; oldY=y;
}
void motion(int x, int y)
{
angle[angleID] += (x-oldX);
oldX = x;
saveall();
glutPostRedisplay();
}
void keyboard(unsigned char key, int x, int y)///按鍵盤數字控制關節
{
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("Week14 file");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutKeyboardFunc(keyboard);
glutMainLoop();
}

➽讀檔

在鍵盤函式裡增加讀檔程式

#include <GL/glut.h>
#include <stdio.h>
FILE * fout=NULL;
int angle[10]={0,0,0,0,0, 0,0,0,0,0};
int angleID=0;
void saveall()
{
if(fout==NULL) fout=fopen("motion.txt","w+");
printf("fout:%d\n", fout);
for(int i=0; i<10; i++){
printf("%d ",angle[i]);
fprintf(fout,"%d ",angle[i]);
}
printf("\n");
fprintf(fout, "\n");
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色
glutSolidTeapot(0.2);///身體
glPushMatrix();///右側
glTranslatef(0.2, 0,0 );
glRotatef(angle[0], 0,0,1);
glTranslatef(0.2, 0,0 );
glColor3f(1,0,0);///紅色
glutSolidTeapot(0.2);///右上手臂
glPushMatrix();
glTranslatef(0.2, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(0.2, 0,0);
glColor3f(1,1,0);///黃色
glutSolidTeapot(0.2);///右下手臂
glPopMatrix();
glPopMatrix();///右側
glPushMatrix();///左側
glTranslatef(-0.2, 0,0 );
glRotatef(angle[2], 0,0,1);
glTranslatef(-0.2, 0,0 );
glColor3f(0,1,0);///綠色
glutSolidTeapot(0.2);///左上手臂
glPushMatrix();
glTranslatef(-0.2, 0,0);
glRotatef(angle[3], 0,0,1);
glTranslatef(-0.2, 0,0);
glColor3f(0,0,1);///藍色
glutSolidTeapot(0.2);///左下手臂
glPopMatrix();
glPopMatrix();///右側
glutSwapBuffers();
}
int oldX, oldY;
void mouse(int button, int state, int x, int y)
{
oldX=x; oldY=y;
}
void motion(int x, int y)
{
angle[angleID] += (x-oldX);
oldX = x;
saveall();
glutPostRedisplay();
}
FILE * fin=NULL;
void keyboard(unsigned char key, int x, int y)///按鍵盤數字控制關節
{
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
if(key=='r'){
if(fin==NULL) fin=fopen("motion.txt","r");
for(int i=0; i<10; i++){
fscanf(fin,"%d",&angle[i]);
}
glutPostRedisplay();
}
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("Week14 file");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutKeyboardFunc(keyboard);
glutMainLoop();
}

長按"r"

➽Notepad++小技巧

比較外掛
外掛>外掛模組管理>搜尋Compare>安裝
先後點擊要比較的兩個檔案>按外掛>Compare>Compare
如下:

➽C/C++小技巧

include都要在最上面，避免出錯
變數宣告都在include下面，避免電腦找不到
函式可以在最上面先宣告一次，避免因為至順序而出錯

可以不用定義!!

2020電腦圖學A

2020年5月27日星期三

(^ω^) 喵～Week14

沒有留言:

張貼留言

2020年5月27日 星期三

(*^ω^*) 喵～Week14

沒有留言:

張貼留言

2020年5月27日星期三

(^ω^) 喵～Week14