導編演也的電腦圖學不亂學_week15

今天總覺得時間過得很慢，不過時間本來就是這樣，不是嗎?

1.攝影視角

2.實作

附錄1:攝影法講解

附錄2:今天的程式碼

#include <GL/glut.h>

#include "glm.h"

GLMmodel* pmodel = NULL;

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);

}

#include <math.h>

float eyex=0, eyey=0, eyez=0;

void timer(int t)

{

    glutTimerFunc(33,timer,t+1);

    float angle=t/180.0*3.1415926;

    eyex=cos(angle);

    eyez=sin(angle);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,1,0.001,1000);

    //glOrtho(-1,+1, -1,+1, -10,+10);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(eyex, eyey, eyez,

              0.0, 0.8, 0.0,

              0, 1, 0);

    glutPostRedisplay();

}

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_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600);

    glutCreateWindow("week15");

    glutDisplayFunc(display);

    glutTimerFunc(33,timer,0);

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

    glEnable(GL_DEPTH_TEST);

    glEnable(GL_LIGHT0);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

}