KOKOTING_week15

Week 15

(1)主題:攝影機、運鏡

(2)主題:投影、矩陣

(3)複習:位置移動、轉動

(4)複習:背景貼圖

(5)期末作品

(一)

到小葉老師的網站下載data、win32、glut32.lib

解壓縮windows

再將data解壓縮至windows資料夾

並將glut32.lib移至windows資料夾

開啟檔案 在座標位置按右鍵

拉動LookAt值 就可以改變攝影機位置

(二)

下載freegult、source

把source裡的glm.c glm.h projectin.h解壓縮到作業資料夾裡

把glm.c檔名改成glm.cpp

把glm.cpp加到專案裡

把windows裡的data丟到freeglut/bin裡

垂直投影

#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;
}

#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;

}