電腦圖學成長日記第十五週

第十五週上課內容

(1)主題:投影機 運鏡

(2)主題:投影 矩陣

(3)複習:位置移動 V.S 轉動

(4)複習:背景貼圖

(5)期末作品

STEP1:

下載data win32 glut32.dll

STEP2:

打開Projection檔案

glOrtho

 右鍵glFrustum

右鍵gluperspectuve

STEP3:

把glm.c改成glm.cpp

將glm.c glm.h projection.c丟入C:\Users\user\Desktop\week015資料夾

STEP4:

把data丟入C:\Users\user\Desktop\freeglut-MinGW-3.0.0-1.mp\freeglut\bin

STEP5:

glm.cpp用Notepad++開啟

STEP6:

開啟 全選 複製

STEP7:

貼入Code Blocks的main.cpp

STEP8:

STEP9:

程式碼01:

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("data/al.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutMainLoop();

    return 0;

}

程式碼02:

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("data/al.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}

程式碼03:

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("data/al.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

#include <math.h>///for sin() cos() ///NOW3

float eyeX=0.5, eyeY=0, eyeZ=0; ///NOW3

void timer(int t)///NOW3

{

    float angle = (t/180.0)*3.1415926; ///NOW3

    eyeX=0.5*cos(angle); ///NOW3

    eyeZ=0.5*sin(angle); ///NOW3

    glutTimerFunc(33, timer, t+1);///NOW3

    glMatrixMode(GL_MODELVIEW);///NOW3

    glLoadIdentity();///NOW3

    gluLookAt( eyeX, eyeY, eyeZ,///eye ///NOW3

           0, 0, 0,///center ///NOW3

               0, 1, 0);///up    ///NOW3

    glutPostRedisplay();///NOW3

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutTimerFunc(33, timer, 0);///NOW3

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}

程式碼04:

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("data/al.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

#include <math.h>///for sin() cos() ///NOW3

float eyeX=0.5, eyeY=0, eyeZ=0; ///NOW3

void timer(int t)///NOW3

{

    glMatrixMode(GL_PROJECTION); ///NOW4

    glLoadIdentity(); ///NOW4

glOrtho(-1, +1,  -1,+1, -10,+10); ///NOW4 你可以看到 -10...+10範圍

    float angle = (t/180.0)*3.1415926; ///NOW3

    eyeX=0.5*cos(angle); ///NOW3

    eyeZ=0.5*sin(angle); ///NOW3

    glutTimerFunc(33, timer, t+1);///NOW3

    glMatrixMode(GL_MODELVIEW);///NOW3

    glLoadIdentity();///NOW3

    gluLookAt( eyeX, eyeY, eyeZ,///eye ///NOW3

           0, 0, 0,///center ///NOW3

               0, 1, 0);///up    ///NOW3

    glutPostRedisplay();///NOW3

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutTimerFunc(33, timer, 0);///NOW3

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}

程式碼05:

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("data/al.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

#include <math.h>///for sin() cos() ///NOW3

float eyeX=2, eyeY=0, eyeZ=0; ///NOW3

void timer(int t)///NOW3

{

    glMatrixMode(GL_PROJECTION); ///NOW4

    glLoadIdentity(); ///NOW4

///glOrtho(-1, +1,  -1,+1, -10.0,10.0); ///NOW4 你可以看到 -10...+10範圍

gluPerspective(60, 1.0, 0.001, 1000);///NOW5

    float angle = (t/180.0)*3.1415926; ///NOW3

    eyeX=2*cos(angle); ///NOW3

    eyeZ=2*sin(angle); ///NOW3

    glutTimerFunc(33, timer, t+1);///NOW3

    glMatrixMode(GL_MODELVIEW);///NOW3

    glLoadIdentity();///NOW3

    gluLookAt( eyeX, eyeY, eyeZ,///eye ///NOW3

           0, 0, 0,///center ///NOW3

               0, 1, 0);///up    ///NOW3

    glutPostRedisplay();///NOW3

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutTimerFunc(33, timer, 0);///NOW3

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}