week03

 Week 03

下載freeglut 把libfreeglut.a複製

重新命名libglut32.a

標示座標

座標(x,y,z)

#include <GL/glut.h>

#include <stdio.h>

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

{

    /// printf("%d %d %d %d\n",button, state, x, y);

    if(state==GLUT_DOWN)

        printf("glVertex2f((%d-150)/150.0, -(%d-150)/150.0);\n", x, y);

}

void display()

{

    glutSolidTeapot ( 0.3 );

    glutSwapBuffers();

}

int main(int argc, char *argv[])///138¦æ

{

  glutInit(&argc, argv);///140¦æ

  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);///143¦æ

  glutCreateWindow("GLUT Shapes");///145¦æ

  glutDisplayFunc(display);///148¦æ

  glutMouseFunc(mouse);

  glutMainLoop();///174¦æ

}

模型

https://jsyeh.org/3dcg10/到這下載data window

在解壓縮 將data移到window

再打開translatef

移動茶壺

用原本的程式碼

再修改幾行

#include <GL/glut.h>

#include <stdio.h>

float teapotX = 0, teapotY = 0;

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

{

    teapotX = (x-150)/150.0;

    teapotY = -(y-150)/150.0;

}

void display()

{   glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslatef(teapotX, teapotY, 0);

    glutSolidTeapot ( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char *argv[])///138¦æ

{

  glutInit(&argc, argv);///140¦æ

  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);///143¦æ

  glutCreateWindow("GLUT Shapes");///145¦æ

  glutDisplayFunc(display);///148¦æ

  glutMouseFunc(mouse);

  glutMainLoop();///174¦æ

}

旋轉茶壺

#include <GL/glut.h>

#include <stdio.h>

float teapotX = 0, teapotY = 0;

float angle = 0;

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

{

    teapotX = (x-150)/150.0;

    teapotY = -(y-150)/150.0;

}

void display()

{   glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glRotatef(angle, 0, 0, 1);

    glutSolidTeapot ( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void motion (int x,int y)

{

    angle = x;

    display();

}

int main(int argc, char *argv[])///138¦æ

{

  glutInit(&argc, argv);///140¦æ

  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);///143¦æ

  glutCreateWindow("GLUT Shapes");///145¦æ

  glutDisplayFunc(display);///148¦æ

  glutMotionFunc(motion);

  glutMainLoop();///174¦æ

}