Week04

 #Week04_mouse_glScalef

1.下載freeglut,選lib,複製改成libglut32.a ///檔名不能有空格

 

上色水壺

 #include <GL/glut.h>

void display()

{

    glClearColor(1.0,1.0,0.9,1.0);///清背景的淡黃色

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc,char*argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week04 mouse glScalef");

    glutDisplayFunc(display);

    glutMainLoop();

}

選轉粉色水壺

 #include <GL/glut.h>

float angle=0;

void display()

{

    glClearColor(1.0,0.0,0.9,1.0);///清背景的淡黃色

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    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[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week04 mouse glScalef");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}

縮放粉色水壺

 #include <GL/glut.h>

///float angle=0;

float s = 1;

void display()

{

    glClearColor(1.0,0.0,0.9,1.0);///清背景的淡黃色

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    glPushMatrix();

        ///glRotatef(angle,0,0,1);

        glScalef(s,s,s);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x,int y) {

    ///angle = x;

    s=1+(x-150)/150.0;

    display();

}

int main(int argc,char*argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week04 mouse glScalef");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}

###week04_keyboard_mouse_motio

1.File-New-porject, GLUT專案 week04_keyboard_mouse_motio

                                                                                                                                              

Keyboard點座標

#include <GL/glut.h>

#include <stdio.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    glPushMatrix();

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

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

     printf("key:%c x:%d y:%d\n",key,x,y);

}

int main(int argc,char*argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week04 keyboard mouse motio");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

Keyboard點座標+mouse+motion選轉

#include <GL/glut.h>

#include <stdio.h>

float angle=0,oldX=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    glPushMatrix();

    glRotatef(angle,0,0,1);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

    oldX = x;

}

void motion(int x,int y){

    angle +=(x-oldX);

    oldX = x;

    display();

}

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

     printf("key:%c x:%d y:%d\n",key,x,y);

}

int main(int argc,char*argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week04 keyboard mouse motio");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

###下載書

課程網址: https://jsyeh.org/3dcg10/

下載:[data][win32]解壓縮

自轉,公轉

轉動中的藍色車搬去右邊轉動的車子

##week04_translate_rotate_scale

File-New-porject, GLUT專案 week04_translate_rotate_scale

                           貼上前一個程式碼

                                            

                                                    +顏色+旋轉

                                                               #include <GL/glut.h>

#include <stdio.h>

float angle=0,oldX=0;

void display()

{

    glClearColor(1.0,1.0,0.9,1.0);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);///清背景

    glPushMatrix();

    glTranslatef(0.8,0,0);///放到右邊

    glRotatef(angle++,0,0,1);///轉動中的

    glScalef(0.3,0.3,0.3);///小小的

    glColor3f(0,1,0);///綠色的

    glutSolidTeapot(0.3);///茶壺

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char*argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow(" week04 translate rotate scale");

    glutDisplayFunc(display);

    glutIdleFunc(display);///加這行

    glutMainLoop();

}

##交換程式碼

translate/rotate

整個<.......>全部轉動

##week04_rotate_translate_scale

複製程式碼

改變兩行

GlTranslatef()和

glRotatef()順序