Week15ㄟ部分

老師說明Maya裁切模型

去老師的網址 https://jsyeh.org/3dcg10/

data、win32檔案接著解壓縮

將data拉進去window資料夾裡面

點選projection.exe，調整eye(從哪裡看)和center(看哪裡)的位置

成功開啟

center = 畫面中心

eye = 從眼睛看(第三人稱)

up = 手機拍照食指方向，旋轉後食指 指的方向

Week15-1

新增week15-1

1.將這行加入/// 

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

再補入glOrtho(-ar*3,ar*3,-1*3,1*3,-100,+100);

2.將這行加入///

glOrtho(-ar*3,ar*3,-1*3,1*3,-100,+100);

再補入gluPerspective(60,ar,0.01,1000);

fovy->field of view(y方向)視野的角度

aspect = aspect ratio長寬比

zNear = 最靠近從哪裡開始

zFar = 最遠位置到哪邊

Week15-2

#include <GL/glut.h>

#include <stdlib.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void reshape(int w,int h){

    glViewport(0,0,w,h);

    float ar=w/(float)h;

    glMatrixMode(GL_PROJECTION);///臨時切換Model view 矩陣

    glLoadIdentity();

    gluPerspective(60,ar,0.01,1000);

    glMatrixMode(GL_MODELVIEW);///切回Model矩陣

    glLoadIdentity();

    gluLookAt(0,0,1,  0,0,0,  0,1,0);

    glutPostRedisplay();

}

float eyeX=0,eyeY=0;

void motion(int x,int y){

    eyeX=(x-150.0)/150.0;

    eyeY=(150.0-y)/150.0;

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    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");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutMainLoop();

}