Week 12鐘珈翎的上課筆記

上課主要內容

(1)3D TRT轉動

(2)矩陣、投影矩陣

(3)攝影機運鏡

(4)會動的機器人

首先，至jsyeh.org/3dcg10下載

data.zip->桌面\windows\data\模型.obj

windows.zip->桌面\windows\projection.exe

gult32.dll->桌面\windows\gult32.dll

加上camera的話，畫面的圖片將更加明亮。

gluLookAt(eyeX,eyeY,eyeZ,centerX,centerY,centerZ,upX,upY,upZ);

#include <GL/glut.h>
#include <math.h>
float eyeX=0.1,eyeY=-0.9,eyeZ=0;
float centerX=0,centerY=0,centerZ=0;
float upX=0,upY=1,upZ=0;
float angle=0;
static void display(void)
{
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
//  gluPerspective(60,1,0.001,10000);
    glMatrixMode(GL_MODELVIEW);

    angle+=0.01;
    eyeX=cos(angle);eyeY=sin(angle);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3d(1,0,0);
    glPushMatrix();
        gluLookAt(eyeX,eyeY,eyeZ,centerX,centerY,centerZ,upX,upY,upZ);

        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
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 };

/* Program entry point */

int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(10,10);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    //glutReshapeFunc(resize);
    glutDisplayFunc(display);
    //glutKeyboardFunc(key);
    //glutIdleFunc(idle);
    glutIdleFunc(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();

    return EXIT_SUCCESS;
}

#include <GL/glut.h>

#include <math.h>

float eyeX=0.1,eyeY=-0.9,eyeZ=0;

float centerX=0,centerY=0,centerZ=0;

float upX=0,upY=1,upZ=0;

float angle=0;

static void display(void)

{

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,1,0.001,10000);

    glMatrixMode(GL_MODELVIEW);

    angle+=0.01;

    eyeX=cos(angle);eyeY=sin(angle);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3d(1,0,0);

    glPushMatrix();

        gluLookAt(eyeX,eyeY,eyeZ,centerX,centerY,centerZ,upX,upY,upZ);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

若沒有黃色那行，茶壺將會破碎不完整。