Fafa的奇妙冒險

Week 04

今日口訣：「左耳靠左肩」

主題：選轉Rotate

實作：glRotatef(角度, x, y, z);

主題2：矩陣Matrix

Week 04-1

Step 1：先到 3D圖學 下載05/04的 Example：data 及 win32

Step 2：依上週步驟，將windows.zip及data.zip解壓縮並將data資料夾拉進windows資料夾中

Step 3：打開transformation.exe

Step 4：可以通過點選和改動上面函示數據來觀察object的移動方向

Step 5：完成！

Week 04-2

Step 1：先開啟CodeBlock 並import GLUT project

Step 2：將下列程式碼複製到project中

Step 3：觀察圖形與先前變化，完成！

Week 04-2.2

Step 1：先開啟CodeBlock 並import GLUT project

Step 2：將下列程式碼複製到project中

程式碼：

#include<GL/glut.h>

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);

}

float angle = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

    angle++;

}

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

{

    glutInit(&argc , argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week04");

    myLight();

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

Step 3：觀察圖案的不同之處，完成！

Week 04-3.2

Step 1：開啟CodeBlock並import GLUT project

Step 2：將下列程式碼複製到project中

程式碼：

#include<GL/glut.h>

float angle = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(0.5,0,0);

        glRotatef(angle,0,1,0);

        glColor3f(0,0,1);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glPushMatrix();

        glRotatef(angle,0,1,0);

        glTranslatef(0.5,0,0);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    

    

    glutSwapBuffers();

    angle++;

}

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

{

    glutInit(&argc , argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE |GL_DEPTH);

    glutCreateWindow("week04");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

Step 3：觀察圖形，完成！