[西斯] [認真] 膝蓋前十字韌帶重建後，要過多久才能%%%

課堂作業1

                                期中考內容!!!

glPushMatrix();  //push備份矩陣
     glTranslatef(x,y,z);  //移動
     glRotatef(angle(角度),x,y,z);  //旋轉
     glScalef(x,y,z);  //縮放
     glBegin(GL_POLYGON);  //開始畫
          glNormal3f(nx,ny,nz);  //法向量
          glTexcoord2f(tx,ty,tz);  //貼圖座標
          glColor3f(r,g,b);  //色彩
          glVertex3f(x,y,z);  //頂點
     glEnd();
glPopMatrix();  //pop還原矩陣

課堂作業2

                                                            STEP1: 打開Light&Material


                                                           

STEP2:在左上角甜甜圈按下滑鼠右鍵

STEP3:點選Dolphins就可以得到一隻海豚

STEP4:接著你可以動左邊的視窗調整參數就可以調整顏色

#include<Gl/glut.h>

const GLfloat light_ambient[]  = { 1.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };//光的位置

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 0.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

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_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("teapot");

    glutDisplayFunc(display);

    glClearColor(1,1,1,1);

    glEnable(GL_CULL_FACE);

    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

}

把上面的程式碼在CODE BLOCKS貼上就可以得到一個茶壺

然後紅色螢光筆的地方你可以調參數調整茶壺的顏色

#include<Gl/glut.h>

#include<stdio.h>

const GLfloat light_ambient[]  = { 1.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

    GLfloat light_position[]={2.0f,5.0f,-5.0f,0.0f};

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 0.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void motion(int x,int y)

{

    light_position[0]=(x-150)/150.0;

    light_position[1]=-(y-150)/150.0;

    glLightfv(GL_LIGHT0, GL_POSITION,light_position);

    glutPostRedisplay();

    printf("%f %f\n",light_position[0],light_position[1]);

}

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_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("teapot");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glClearColor(1,1,1,1);

    glEnable(GL_CULL_FACE);

    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

}

只要將作業三的程式碼再加上紅色螢光筆motion的函式

跟#include <stdio.h>就可以調整光照的位置

然後藍螢光筆printf函式是在小黑視窗裡顯示光源的座標

結果如下圖