Week14 Zhou

 Week14

首先安裝好GIT BASH

接著git clone 自己的2023graphicsb的倉庫

接著開啟codeblocks開啟一個新的專案

儲存位置放在2023graphicsb

freeglut直接使用finalproject裡的

接著將程式碼改成之前寫過的10行程式碼

#include <GL/glut.h>

void display()

{

    glClear(  GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        glutSolidTeapot(0.3);

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week14");

    glutDisplayFunc(display);

    glutMainLoop();

}

就能出現之前的茶壺囉

再將程式碼修改為以下程式碼

就會出現自己轉動的茶壺囉

#include <GL/glut.h>

float angle = 0;

void timer(int t)

{

    glutTimerFunc(500,timer,t+1);

    angle += 90;

    glutPostRedisplay();

}

void display()

{

    glClear(  GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week14");

    glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

再將程式碼修改為以下

按任意鍵就可以讓茶壺開始轉囉

#include <GL/glut.h>

float angle = 0;

void timer(int t)

{

    glutTimerFunc(33,timer,t+1);

    angle += 3;

    glutPostRedisplay();

}

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

{

    glutTimerFunc(0,timer,0);

}

void display()

{

    glClear(  GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week14");

    glutKeyboardFunc(keyboard);

    glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

將程式碼改為以下程式碼

就能用滑鼠控制角度

也可以用空白件來旋轉茶壺

///

#include <GL/glut.h>

float angle = 0,newAngle = 0, oldAngle = 0;

float oldX = 0;

void timer(int t)

{

    if(t<100) glutTimerFunc(33,timer,t+1);

    float alpha = t/100.0;

    angle = alpha*newAngle + (1-alpha)*oldAngle;

    glutPostRedisplay();

}

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

{

    glutTimerFunc(0,timer,0);

}

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

{

    if(state==GLUT_DOWN) oldAngle = angle;

    if(state==GLUT_UP) newAngle = angle;

    oldX = x;

    glutPostRedisplay();

}

void motion(int x,int y)

{

    angle += x-oldX;

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(  GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week14");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

   /// glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

開啟上次的final project

並將程式碼修改為以下

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * head = NULL;

GLMmodel * body = NULL;

GLMmodel * rightup_arm = NULL;

GLMmodel * rightlow_arm = NULL;

int show[4] ={1,1,1,1};

int ID = 2;

float teapotX = 0, teapotY = 0;

FILE * fout = NULL;

FILE * fin = NULL;

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;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    if(head==NULL)

    {

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

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

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

        rightlow_arm = glmReadOBJ("model/lowarmR.obj");

    }

    glPushMatrix();

        glScalef(0.3,0.3,0.3);

        glPushMatrix();

            glTranslatef(teapotX,teapotY,0);

            if(ID==0) glColor3f(1,0,0);

            else glColor3f(1,1,1);

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

        glPopMatrix();

        if(ID==1) glColor3f(1,0,0);

        else glColor3f(1,1,1);

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

        if(ID==2) glColor3f(1,0,0);

        else glColor3f(1,1,1);

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

        if(ID==3) glColor3f(1,0,0);

        else glColor3f(1,1,1);

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

    glPopMatrix();

    glutSwapBuffers();

}

int oldX=0, oldY=0;

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

{

    if(state==GLUT_DOWN)

    {

        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_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * head = NULL;

GLMmodel * body = NULL;

GLMmodel * rightup_arm = NULL;

GLMmodel * rightlow_arm = NULL;

int show[4] ={1,1,1,1};

int ID = 2;

float teapotX = 0, teapotY = 0;

float angle=0;

FILE * fout = NULL;

FILE * fin = NULL;

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;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    if(head==NULL)

    {

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

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

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

        rightlow_arm = glmReadOBJ("model/lowarmR.obj");

    }

         glPushMatrix();

        glScalef(0.3,0.3,0.3);

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

        if(ID==0) glColor3f(1,0,0);

        else glColor3f(1,1,1);

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

        if(ID==1) glColor3f(1,0,0);

        else glColor3f(1,1,1);

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

        glPushMatrix();

            glTranslatef(-1.360000,+0.360000,0);

            glRotatef(angle,0,0,1);

            glTranslatef(1.360000,-0.360000,0);

            if(ID==2) glColor3f(1,0,0);

            else glColor3f(1,1,1);

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

            glPushMatrix();

                glTranslatef(-1.959999,+0.080000,0);

                glRotatef(angle,0,0,1);

                glTranslatef(1.959999,-0.080000,0);

                if(ID==3) glColor3f(1,0,0);

                else glColor3f(1,1,1);

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

            glPopMatrix();

        glPopMatrix();

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot(0.02);

    glutSwapBuffers();

}

int oldX=0, oldY=0;

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

{

    if(state==GLUT_DOWN)

    {

        oldX = x;

        oldY = y;

    }

}

void motion(int x, int y)

{

    teapotX += (x-oldX)/150.0*3;

    teapotY -= (y-oldY)/150.0*3;

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

    angle += x-oldX;

    oldX = x;

    oldY = y;

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}