OuO圖學筆記Week05

進入老師的網站https://jsyeh.org/3dcg10-->下載Win32、data-->解壓縮

data到windows

step01

第一個程式:(運用基本10行程式-->增加void keyboard函式)

#include <GL/glut.h>

#include <stdio.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void keyboard(unsigned char key, int x, int y)

{

    printf("你按下了 %c 在 %d %d 座標\n", key , x, y);

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

step02-1(運用基本10行程式-->增加void mouse跟void motion函式)

#include <GL/glut.h>

#include <stdio.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void keyboard(unsigned char key, int x, int y)

{

}

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

{

}

void motion(int x,int y)

{

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

step02-2 

以滑鼠為軸心點擊會更改位置

#include <GL/glut.h>

#include <stdio.h>

float x=0, y=0, z=0;

int oldX=0, oldY=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef((x-150)/150.0 , -(y-150)/150.0 ,z);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key, int mouseX, int mouseY)

{

}

void mouse(int button, int state, int mouseX, int mouseY )

{

}

void motion(int mouseX,int mouseY)

{

    x += (mouseX-oldX); y += (mouseX-mouseY);

    oldX = mouseX;      oldY = mouseY;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

step02-3

更改背景顏色

#include <GL/glut.h>

#include <stdio.h>

float x=150, y=150, z=0;

int oldX=0, oldY=0;

void display()

{

    glClearColor( 0.5, 0.5, 0.5, 1 );

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef((x-150)/150.0 , -(y-150)/150.0 ,z);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key, int mouseX, int mouseY)

{

}

void mouse(int button, int state, int mouseX, int mouseY )

{

    oldX = mouseX; oldY = mouseY;

}

void motion(int mouseX,int mouseY)

{

    x += (mouseX-oldX); y += (mouseX-mouseY);

    oldX = mouseX;      oldY = mouseY;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

step03-1

放大以及縮小茶壺

#include <GL/glut.h>

#include <stdio.h>

float x=150, y=150, z=0,scale=1.0 ;

int oldX=0, oldY=0;

void display()

{

    glClearColor( 0.5, 0.5, 0.5, 1 );

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef((x-150)/150.0 , -(y-150)/150.0 ,z);

        glScalef(scale,scale,scale);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key, int mouseX, int mouseY)

{

}

void mouse(int button, int state, int mouseX, int mouseY )

{

    oldX = mouseX; oldY = mouseY;

}

void motion(int mouseX,int mouseY)

{

    if( mouse-oldX > 0) scale *= 1.01;

    if( mouse-oldX < 0) scale *= 0.99;

    ///x += (mouseX-oldX); y += (mouseX-mouseY);

    oldX = mouseX;      oldY = mouseY;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}