10160305賴奕廷week15

Week15

*step01 嘗試旋轉鏡頭

到jsyeh.org/3dcg10/下載data和win32將資料夾放成如下

打開projection.exe

 

*step02 調整鏡頭的程式

git下載自己的資料夾到桌面，開新的專案檔

#ifdef __APPLE__

#include <GLUT/glut.h>

#else

#include <GL/glut.h>

#endif

#include <stdlib.h>

static int slices = 16;

static int stacks = 16;

/* GLUT callback Handlers */

static void resize(int width, int height)

{

    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity() ;

}

static void display(void)

{

    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;

    const double a = t*90.0;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3d(1,0,0);

    glPushMatrix();

        glTranslated(-2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(-2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glutSwapBuffers();

}

static void key(unsigned char key, int x, int y)

{

    switch (key)

    {

        case 27 :

        case 'q':

            exit(0);

            break;

        case '+':

            slices++;

            stacks++;

            break;

        case '-':

            if (slices>3 && stacks>3)

            {

                slices--;

                stacks--;

            }

            break;

    }

    glutPostRedisplay();

}

static void idle(void)

{

    glutPostRedisplay();

}

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 */

float eyeX = 0, eyeY=0;

void motion(int x, int y) {

    eyeX = 3*(x-320)/320.0;

    eyeY = 3*(240-y)/240.0;

    glLoadIdentity();

    gluLookAt(eyeX, eyeY, -3,  0,0,-6,  0,1,0);

    glutPostRedisplay();

}

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");

    glutMotionFunc(motion);

    glutReshapeFunc(resize);

    glutDisplayFunc(display);

    glutKeyboardFunc(key);

    glutIdleFunc(idle);

    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;

}

*step02-1 測試預設投影

測試預設垂直投影glOrtho() 角度張開的透視投影glFrustum()

 

*step02-2 視角修改

#ifdef __APPLE__

#include <GLUT/glut.h>

#else

#include <GL/glut.h>

#endif

#include <stdlib.h>

static int slices = 16;

static int stacks = 16;

/* GLUT callback Handlers */

static void resize(int width, int height)

{

    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    glOrtho(-ar*3, ar*3, -1.0*3, 1.0*3, 2.0, 100.0);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity() ;

}

static void display(void)

{

    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;

    const double a = t*90.0;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3d(1,0,0);

    glPushMatrix();

        glTranslated(-2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutSolidTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(-2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireSphere(1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(0,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireCone(1,1,slices,stacks);

    glPopMatrix();

    glPushMatrix();

        glTranslated(2.4,-1.2,-6);

        glRotated(60,1,0,0);

        glRotated(a,0,0,1);

        glutWireTorus(0.2,0.8,slices,stacks);

    glPopMatrix();

    glutSwapBuffers();

}

static void key(unsigned char key, int x, int y)

{

    switch (key)

    {

        case 27 :

        case 'q':

            exit(0);

            break;

        case '+':

            slices++;

            stacks++;

            break;

        case '-':

            if (slices>3 && stacks>3)

            {

                slices--;

                stacks--;

            }

            break;

    }

    glutPostRedisplay();

}

static void idle(void)

{

    glutPostRedisplay();

}

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);

    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;

}

static void resize(int width, int height)

{

    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    //glOrtho(-ar*3, ar*3, -1.0*3, 1.0*3, 2.0, 100.0);

    gluPerspective(60, ar, 0.01, 1000);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity() ;

}

*step03-1 按住進行3d旋轉

#include <GL/glut.h>

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

void motion(int x, int y) {

    glLoadIdentity();

    float eyeX = (x-150)/150.0, eyeY = (150-y)/150.0;

    gluLookAt(eyeX,eyeY,1,  0,0,0,  0,1,0);

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week15");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

*step03-2 視角改良

#include <GL/glut.h>

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

void motion(int x, int y) {

    glLoadIdentity();

    float eyeX = (x-150)/150.0, eyeY = (150-y)/150.0;

    gluLookAt(eyeX,eyeY,1,  0,0,0,  0,1,0);

    glutPostRedisplay();

}

void reshape(int w, int h) {

    float ar = w / (float) h;

    glViewport(0, 0, w, h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60, ar, 0.01, 1000);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(0,0,1,  0,0,0,  0,1,0);

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week15");

    glutReshapeFunc(reshape);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

*step04 選擇關節即可旋轉選擇的關節

*使用final_project檔

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel*head=NULL;

GLMmodel*body=NULL;

GLMmodel*uphandr=NULL;

GLMmodel*downhandr=NULL;

int show[4]={1,1,1,1};///week14_step03_1

int ID =2;///week14_step03_1

float teapotX=0,teapotY=0;

float angle[20] = {};

FILE*fout=NULL;

FILE*fin=NULL;

void keyboard(unsigned char key,int x,int y)

{

    if(key=='0') ID=0;///show[0]=!show[0];

    if(key=='1') ID=1;///show[1]=!show[1];

    if(key=='2') ID=2;///show[2]=!show[2];

    if(key=='3') ID=3;///show[3]=!show[3];

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    if(head==NULL){

        head=glmReadOBJ("model/head.obj");

        body=glmReadOBJ("model/body.obj");

        uphandr=glmReadOBJ("model/uphandr.obj");

        downhandr=glmReadOBJ("model/downhandr.obj");

    }

    glPushMatrix();

        glScalef(0.3,0.3,0.3);

        glPushMatrix();

            ///glTranslatef(teapotX,teapotY,0);

            if(ID==0)glColor3f(1,0,0);

            else glColor3f(1,1,1);

            if(show[0]) glmDraw(head,GLM_MATERIAL);

    glPopMatrix();

     if(ID==1)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[1]) glmDraw(body,GLM_MATERIAL);

        glPushMatrix();

        glTranslatef(-1.360000,+0.360000,0);

        glRotatef(angle[2],0,0,1);

        glTranslatef(1.360000,-0.360000,0);

        if(ID==2)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[2]) glmDraw(uphandr,GLM_MATERIAL);

        glPushMatrix();

        glTranslatef(-1.959999,+0.080000,0);

        glRotatef(angle[3],0,0,1);

        glTranslatef(1.959999,-0.080000,0);

        if(ID==3)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[3]) glmDraw(downhandr,GLM_MATERIAL);

        glPopMatrix();

        glPopMatrix();

        glPopMatrix();

        glColor3f(0,1,0);

        glutSolidTeapot(0.02);

    glutSwapBuffers();

}

int oldX=0,oldY=0;

void mouse(int button,int state,int x,int y)

{

    if(state==GLUT_DOWN){

        oldX=x;

        oldY=y;

    }

}

void motion(int x,int y){

    teapotX+=(x-oldX)/150.0*3;

    teapotY-=(y-oldY)/150.0*3;

    printf("glTranslatef(%f,%f,0);\n",teapotX,teapotY);

    angle[ID] +=x-oldX;

    oldX=x;

    oldY=y;

    glutPostRedisplay();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week12");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}