電腦圖學筆記week17

總複習

 Step01

• 開啟CodeBlocks
  
• 建立新GLUT專案  week17_demo
• 將week17_demo.cbp檔打開然後將workingdir " "內改成"."

• 回去執行程式後發現城市跑不動

         

• 所以要去freeglut資料夾->bin->freeglut.dll將他複製到week17_demo的資料夾裡面
  
  
• 可以執行了
• 將10行程式碼導入

• 加入打光函式，打完再將mylight()導入main函式

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

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[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void mylight(){

    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);

}

• 把glm.h、glm.c加入week17_demo，把glm.c改成glm.cpp
• add files將glm.cpp導入CodeBlocks中

• 加入攝影機，並在main函式加入glutReshapeFunc(reshape);

void reshape(int w,int h){

    float ar = (float)w/(float)h;

    glViewport(0,0,w,h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,ar,0.1,100.0);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(0,0,-5, 0,0,0, 0,1,0);

}

• 加入複數貼圖，先宣告兩個整數 GLuinit tex1,tex2;
• 在main函式中 加入 tex1= myTexture("data/.......");
• tex2 = myTexture("data/......");
• 在 display()內加入 glBindTexture(GL_TEXTURE_2D, tex1);
• glBindTexture(GL_TEXTURE_2D , tex2);