Week12 3DTRT轉動 矩陣 攝影機運鏡 會動機器人

TODO: jsyeh,org/3dcg10 download
data.zip-->desktop\windows\data\模型.obj
windows.zip-->desktop\windows\progection.exe
glut32.dll-->desktop\windows\glut32.dll

TODO: glutLookAt(eyeX,eyeY,eyeZ)<-- 攝影機
                               centerX,centerY,centerZ
                                upX  ,  upY  ,  upZ,

將data folder 跟glut32.dll 放入windows


執行結果如下


開啟 coding block

OpenGLUT 執行 freeglut folder
 

修改code


#include <GL/glut.h>
#include <math.h>

float eyeX=0,eyeY=0,eyeZ=1;
float centerX=0,centerY=0,centerZ=0;
float upX=0,upY=1,upZ=0;
static void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3d(1,0,0); 顏色RBG
    glPushMatrix();
    gluLookAt(eyeX,eyeY,eyeZ,centerX,centerY,centerZ,upX,upY,upZ); 攝影機
    glutSolidTeapot(0.3); 茶杯大小
    glPopMatrix();
    glutSwapBuffers();
}


glutIdleFunc(display); 修改這行



新增code:
float angle=0;
angle+=0.01;
eyeZ=cos(angle); eyeY=sin(angle);




code:

#include <GL/glut.h>
#include <math.h>

float eyeX=0,eyeY=0,eyeZ=1;
float centerX=0,centerY=0,centerZ=0;
float upX=0,upY=1,upZ=0;
float angle=0;
static void display(void)
{
    glMatrixMode(GL_PROJECTION);// 新增
    glLoadIdentity();新增
    gluPerspective(60,1,0.001,10000);新增
    glMatrixMode(GL_MODELVIEW);新增

    angle+=0.01;
    eyeZ=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();
}


機器人


code:

#include <GL/glut.h>

#include <math.h>

float eyeX=0, eyeY= 0, eyeZ= 2;

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

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

float angle=0, dir=1;;

static void display(void)

{

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60, 1, 0.001, 10000);

    glMatrixMode(GL_MODELVIEW);

    angle+=dir;

    if(angle>60) dir=-dir;

    if(angle<0) dir=-dir;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3d(1,0,0);

    glPushMatrix();

        gluLookAt(eyeX, eyeY, eyeZ,

                  centerX, centerY, centerZ,

                  upX, upY, upZ);

        glPushMatrix();

            glColor3f(1,0,0);

            glutSolidTeapot(0.3);///head

            glPushMatrix();

                glTranslatef(0, -0.3, 0);

                glColor3f(1,1,1);

                glutSolidTeapot(0.3);///body

                glPushMatrix();

                    ///glTranslatef(0.6,0,0);///old rotate

                    glTranslatef(0.3,0,0);/// T

                    glRotatef(angle, 0,0,1);///R

                    glTranslatef(0.3,0,0);/// T

                    glutSolidTeapot(0.3);///right upper arm

                    glPushMatrix();

                        glTranslatef(0.3, 0,0);///T

                        glRotatef(angle, 0,0,1);///R

                        glTranslatef(0.3, 0,0);///T

                        glutSolidTeapot(0.3);///right lower arm

                    glPopMatrix();

                glPopMatrix();

                glPushMatrix();

                    ///glTranslatef(0.6,0,0);///old rotate

                    glTranslatef(-0.3,0,0);/// T

                    glRotatef(-angle, 0,0,1);///R

                    glTranslatef(-0.3,0,0);/// T

                    glutSolidTeapot(0.3);///left upper arm

                    glPushMatrix();

                        glTranslatef(-0.3, 0,0);///T

                        glRotatef(-angle, 0,0,1);///R

                        glTranslatef(-0.3, 0,0);///T

                        glutSolidTeapot(0.3);///left lower arm

                    glPopMatrix();

                glPopMatrix();

            glPopMatrix();

        glPopMatrix();

    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;

}