電腦圖學week12

 一.安裝3D Explore:

開啟Gundam的OBJ檔

Save as Sample APP

二.創建OpenGL專案 將main.c改成gundam.cpp

程式碼新增:

#define GL_BGR_EXT 0x80E0

#define GL_BGRA_EXT 0x80E1

程式碼註解:Pallette的兩行

結果:360度旋轉

三.

程式碼新增:

      glRotatef(nAngle,0,1,0);

      glScalef(3,3,3);

程式碼註解:

 ///   glRotatef (30.0f, 1.0f, 0.0f, 0.0f);

 ///   glRotatef ((GLfloat) nAngle, 0.0f, 1.0f, 0.0f);

 ///   glRotatef ((GLfloat) nAngle2, 1.0f, 0.0f, 0.0f);

 ///   glScalef (nSize+2.5f,nSize+2.5f,nSize+2.5f);

結果:180度旋轉

四.將gundam.obj匯入到Maya裡

將選取的部分匯出成obj、mtl檔

五.

打開新的OpenGLUT專案

程式碼(打光):

#include <GL/glut.h>

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

///下面是從 GLUT專案main.cpp剪貼來的

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 };

int main( int argc, char** argv )

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);

    glutCreateWindow("week12 hw4");

    glutDisplayFunc(display);

    ///下面是從 GLUT專案main.cpp剪貼來的

    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();

}

更改執行目錄→之後可以把檔案都放在一起

(將<Option working_dir="C:/Users/Administrator/Desktop/freeglut/bin" />改成<Option working_dir="." />)

把freeglut裡bin資料夾裡的freeglut.dll複製一個到OpenGLUT(week12_hw4)專案裡