chiche_week15

 Week15

Step01

開啟連結 https://jsyeh.org/3dcg10/

下載 windows \ Transformation.exe

下載 \ windows \ data \模型檔

Step02

打開Projection.exe檔

Step03

glPerspective( ) 裡的參數 英文都是縮寫

gluLookAt( )

從哪裡看 eye

看哪裡 center

食指向上 指到哪拍哪 up

fovy : field of view ( Y方向 )  : 視野的角度

fovy的角度越大，東西就會越小，最大到179度 

aspect : aspect ratio : 長寬比

zNear zFar : 遠近

   

Step04

程式碼:

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void reshape(int w, int h)

{

    glViewport(0 , 0 , w , h); ///視窗裡會看到2D視窗

    float ar = w/(float) h; ///apsect ratio長寬比

    glMatrixMode(GL_PROJECTION); ///先切換到 Project 矩陣

    glLoadIdentity(); ///矩陣清空,成為單位矩陣(最一開始的矩陣)

    gluPerspective(60 , ar , 0.01 , 1000); ///現在一片空白,因為我們在茶壺裡

    glMatrixMode(GL_MODELVIEW); ///做好後,馬上切回 model view 矩陣

    glLoadIdentity();///矩陣清空,成為單位矩陣(最一開始的矩陣)

    gluLookAt(0,0,1,  0,0,0,   0,1,0);

    ///在0,0,1 看著茶壺 0,0,0, up是0,1,0

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week15");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape); ///老師把名字變reshape

    glutMainLoop();

}

Step05 用 motion()函式，移動滑鼠

程式碼:

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void reshape(int w, int h)

{

    glViewport(0 , 0 , w , h); ///視窗裡會看到2D視窗

    float ar = w/(float) h; ///apsect ratio長寬比

    glMatrixMode(GL_PROJECTION); ///先切換到 Project 矩陣

    glLoadIdentity(); ///矩陣清空,成為單位矩陣(最一開始的矩陣)

    gluPerspective(60 , ar , 0.01 , 1000); ///現在一片空白,因為我們在茶壺裡

    glMatrixMode(GL_MODELVIEW); ///做好後,馬上切回 model view 矩陣

    glLoadIdentity();///矩陣清空,成為單位矩陣(最一開始的矩陣)

    gluLookAt(0,0,1,  0,0,0,   0,1,0);

    ///在0,0,1 看著茶壺 0,0,0, up是0,1,0

    glutPostRedisplay();

}

float eyeX = 0, eyeY = 0;

void motion(int x, int y)

{

    eyeX = (x-150.0)/150.0;

    eyeY = (150.0-y)/150.0;

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(eyeX, eyeY, 1,   0,0,0,   0,1,0);

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week15");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutReshapeFunc(reshape); ///老師把名字變reshape

    glutMainLoop();

}

Step06 開啟FinalProject檔案

程式碼:

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * head = NULL;

GLMmodel * body = NULL;

GLMmodel * ass = NULL;

GLMmodel * uparmR = NULL;

GLMmodel * armR = NULL;

int show[5] = {1,1,1,1,1}; ///show[1]來決定要不要顯示

int ID=4; ///0是頭 1是身體  2是屁股 3是上手臂 4是下手臂

void keyboard(unsigned char key,int x,int y)

{

    if(key=='0') ID=0;

    if(key=='1') ID=1;

    if(key=='2') ID=2;

    if(key=='3') ID=3;

    if(key=='4') ID=4;

    glutPostRedisplay();

}

FILE * fout = NULL;

FILE * fin = NULL;

float teapotX=0 , teapotY=0;

float angle[20] = {};

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glScalef(0.2,0.2,0.2);

        if(body==NULL){

            head = glmReadOBJ("model/head.obj");

            body = glmReadOBJ("model/body.obj");

            ass = glmReadOBJ("model/ass.obj");

            uparmR = glmReadOBJ("model/uparmR.obj");

            armR = glmReadOBJ("model/armR.obj");

        }

        if (ID==0) glColor3f(1,0,0); ///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[0]) glmDraw(head, GLM_MATERIAL);

        if (ID==1) glColor3f(1,0,0);///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[1]) glmDraw(body, GLM_MATERIAL);

        glPushMatrix(); ///屁股

            glTranslatef(-0.233333, 0.413333, 0);

            glRotatef( angle[2] , 0 , 0 , 1);

            glTranslatef(0.233333, -0.413333, 0);

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

            if (ID==2) glColor3f(1,0,0);///選定的，變紅色

            else glColor3f(1,1,1);

            if (show[2]) glmDraw(ass, GLM_MATERIAL);

        glPopMatrix();

        if (ID==3) glColor3f(1,0,0);///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[3]) glmDraw(uparmR, GLM_MATERIAL);

        glPushMatrix(); ///下手臂

            glTranslatef(-1.933333, 0.140000, 0);

            glRotatef( angle[4] , 0 , 0 , 1);

            glTranslatef(1.933333, -0.140000, 0);

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

            if (ID==4) glColor3f(1,0,0);///選定的，變紅色

            else glColor3f(1,1,1);

            if (show[4]) glmDraw(armR, GLM_MATERIAL);

        glPopMatrix();

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot(0.02);

    glutSwapBuffers();

}

int oldX = 0 ,oldY = 0;

void motion(int x, int  y)

{

    teapotX += (x - oldX)/150.0;

    teapotY -= (y - oldY)/150.0;

    angle[ID] += ( x - oldX );

    oldX = x;

    oldY = y;

    ///angle = x;

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

    glutPostRedisplay();

}

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

{

    if(state==GLUT_DOWN)

    {

        teapotX = (x-150)/150.0;

        teapotY = (150-y)/150.0;

        if(fout==NULL) fout = fopen("file4.txt","w");

        fprintf(fout, "%f %f\n",teapotX , teapotY);

    }

    display();

}

//void keyboard(unsigned char key,int x,int y)

//{

//    if (fin==NULL)

//    {

//        fclose(fout);

//        fin = fopen("file4.txt","r");

//    }

//    fscanf(fin,"%f %f",&teapotX , &teapotY);

//    display();

//}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

Step07 讀入檔案motion.txt

程式碼:

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * head = NULL;

GLMmodel * body = NULL;

GLMmodel * ass = NULL;

GLMmodel * uparmR = NULL;

GLMmodel * armR = NULL;

int show[5] = {1,1,1,1,1}; ///show[1]來決定要不要顯示

int ID=4; ///0是頭 1是身體  2是屁股 3是上手臂 4是下手臂

FILE * fout = NULL;

FILE * fin = NULL;

float teapotX=0 , teapotY=0;

float angle[20] = {};

void keyboard(unsigned char key,int x,int y)

{

    if(key=='0') ID=0;

    if(key=='1') ID=1;

    if(key=='2') ID=2;

    if(key=='3') ID=3;

    if(key=='4') ID=4;

    if(key=='s'){

        if(fout==NULL) fout = fopen("motion.txt", "w");

        for(int i=0 ; i<20 ; i++)

        {

            fprintf(fout, "%.2f ", angle[i] );

        }

        fprintf(fout, "\n");

    }

    else if (key=='c'){

        if(fin!=NULL) fclose(fin);

        fin = NULL;

        if(fout!=NULL) fclose(fout);

        fout = NULL;

    }

    else if (key=='r'){

        if(fin == NULL) fin = fopen("motion.txt", "r");

        for(int i=0 ; i<20 ; i++)

        {

            fscanf(fin, "%f", &angle[i] );

        }

        glutPostRedisplay();

    }

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glScalef(0.2,0.2,0.2);

        if(body==NULL){

            head = glmReadOBJ("model/head.obj");

            body = glmReadOBJ("model/body.obj");

            ass = glmReadOBJ("model/ass.obj");

            uparmR = glmReadOBJ("model/uparmR.obj");

            armR = glmReadOBJ("model/armR.obj");

        }

        if (ID==0) glColor3f(1,0,0); ///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[0]) glmDraw(head, GLM_MATERIAL);

        if (ID==1) glColor3f(1,0,0);///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[1]) glmDraw(body, GLM_MATERIAL);

        glPushMatrix(); ///屁股

            glTranslatef(-0.233333, 0.413333, 0);

            glRotatef( angle[2] , 0 , 0 , 1);

            glTranslatef(0.233333, -0.413333, 0);

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

            if (ID==2) glColor3f(1,0,0);///選定的，變紅色

            else glColor3f(1,1,1);

            if (show[2]) glmDraw(ass, GLM_MATERIAL);

        glPopMatrix();

        if (ID==3) glColor3f(1,0,0);///選定的，變紅色

        else glColor3f(1,1,1);

        if (show[3]) glmDraw(uparmR, GLM_MATERIAL);

        glPushMatrix(); ///下手臂

            glTranslatef(-1.933333, 0.140000, 0);

            glRotatef( angle[4] , 0 , 0 , 1);

            glTranslatef(1.933333, -0.140000, 0);

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

            if (ID==4) glColor3f(1,0,0);///選定的，變紅色

            else glColor3f(1,1,1);

            if (show[4]) glmDraw(armR, GLM_MATERIAL);

        glPopMatrix();

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot(0.02);

    glutSwapBuffers();

}

int oldX = 0 ,oldY = 0;

void motion(int x, int  y)

{

    teapotX += (x - oldX)/150.0;

    teapotY -= (y - oldY)/150.0;

    angle[ID] += ( x - oldX );

    oldX = x;

    oldY = y;

    ///angle = x;

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

    glutPostRedisplay();

}

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

{

    if(state==GLUT_DOWN)

    {

        teapotX = (x-150)/150.0;

        teapotY = (150-y)/150.0;

        if(fout==NULL) fout = fopen("file4.txt","w");

        fprintf(fout, "%f %f\n",teapotX , teapotY);

    }

    display();

}

//void keyboard(unsigned char key,int x,int y)

//{

//    if (fin==NULL)

//    {

//        fclose(fout);

//        fin = fopen("file4.txt","r");

//    }

//    fscanf(fin,"%f %f",&teapotX , &teapotY);

//    display();

//}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

step08

上傳檔案git指令

1. git指令

2. cd desktop

3. git clone https://github.com/chiche/2023graphicsa

4. cd 2023graphicsa

5. start .

6. git add . 

7. git status

8. git config --global user.email "liao2013823@gmail.com"

9. git config --global user.name "chiche0306"

10. git commit -m "week13"

11. git push