CY.hsin week_04

 1.開啟範例檔

    step01:查詢https://jsyeh.org/3dcg10/

    step02:下載 windows&&date

    step03:解壓縮後將資料夾date移到windows

    step04:開啟 Transformation

2.會跑的茶壺

    #include <gl/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslated(0.3,0.2,0);

    glColor3f(1,0,0);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMainLoop();

    return 0;

}

3.四個茶壺:

#include <gl/glut.h>

void myTeapot(float x, float y)

{

    glPushMatrix();

        glTranslatef(x,y,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,0,0);

    myTeapot(+0.5,+0.5);

    myTeapot(+0.5,-0.5);

    myTeapot(-0.5,-0.5);

    myTeapot(-0.5,+0.5);

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMainLoop();

    return 0;

}

4.Mouse

#include <GL/glut.h>

#include <stdio.h>

void display()

{

        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        glutSwapBuffers();

}

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

{

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

}

int main(int argc, char**argv)

{

    glutInit( &argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}

5.Coordinate

#include <GL/glut.h>

#include <stdio.h>

int mouseX=0, mouseY=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glPushMatrix();

        glTranslatef((mouseX-150)/150.0,-(mouseY-150)/150.0,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    mouseX=x; mouseY=y;

}

int main(int argc, char**argv)

{

    glutInit( &argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}

5.draw

#include <GL/glut.h>

#include <stdio.h>

int mouseX=0, mouseY=0, N=0;

int mx[100],my[100];

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glBegin(GL_LINE_LOOP);

        for(int i=0;i<N;i++){

            glVertex2f((mx[i]-150)/150.0,-(my[i]-150)/150.0);

        }

    glEnd();

    glutSwapBuffers();

}

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

{

    mouseX=x; mouseY=y;

    if(state==GLUT_DOWN){

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

    N++;

    mx[N-1]=x;my[N-1]=y;

    }

}

int main(int argc, char**argv)

{

    glutInit( &argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}