鯉魚-Week 06

1 電腦圖學之父 :  Ivan Sutherland

2  https://jsyeh.org/3dcg10/ 下載windows.zip , data.zip

3 解壓縮,執行 Transformation.exe

4 下方可以右鍵 Swap Translate/Rotate

    自轉 VS. 公轉

5 實作

#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("現在按下:%c 座標在:%d %d\n",key,x,y);

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

6  mouse motion

#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("現在按下:%c 座標在:%d %d\n",key,x,y);
}
void mouse(int button,int state,int x,int y)
{
}
void motio(int x,int y)
{
}
int main(int argc,char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week06 keyboard mouse motion");
    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutMainLoop();
}

7 

#include <GL/glut.h>

#include <stdio.h>

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

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)

{

    printf("現在按下:%c 座標在:%d %d\n",key,mouseX,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+=(mouseY-oldY);

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week06 keyboard mouse motion");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

8 

#include <GL/glut.h>

#include <stdio.h>

float x=0,y=0,z=0,scale=1.0,oldX,oldY;

void display()

{

    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)

{

    printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);

}

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

{

    oldX = mouseX; oldY = mouseY;

}

void motion(int mouseX,int mouseY)

{

    if(mouseX>oldX) scale = scale * 1.01;

    if(mouseX<oldX) scale= scale * 0.99;

    //x+=(mouseX-oldX);

    //y+=(mouseY-oldY);

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week06 keyboard mouse motion");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

9

#include <GL/glut.h>

#include <stdio.h>

float x=0,y=0,z=0,scale=1.0,angle=0.0,oldX,oldY;

int now=1;

void display()

{

    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)

{

    //printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);

    if(key=='w' || key=='W')now=1;

    if(key=='e' || key=='E')now=2;

    if(key=='r' || key=='R')now=3;

}

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

{

    oldX = mouseX; oldY = mouseY;

}

void motion(int mouseX,int mouseY)

{

    if(now==1){

        x+=(mouseX-oldX);

        y+=(mouseY-oldY);

       }

    else if(now==3){

        if(mouseX>oldX) scale = scale * 1.01;

        if(mouseX<oldX) scale= scale * 0.99;

    }

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week06 keyboard mouse motion");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

10 模仿 Maya/Unity介面

#include <GL/glut.h>

#include <stdio.h>

float x=250,y=250,z=0,scale=1.0,angle=0.0,oldX,oldY;

int now=1;

void display()

{

    glClearColor(0.5,0.5,0.5,1);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef((x-250)/250.0 , -(y-250)/250.0 , z);

        glRotatef(angle,0,0,1);

        glScalef(scale,scale,scale);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    //printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);

    if(key=='w' || key=='W')now=1;

    if(key=='e' || key=='E')now=2;

    if(key=='r' || key=='R')now=3;

}

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

{

    oldX = mouseX; oldY = mouseY;

}

void motion(int mouseX,int mouseY)

{

    if(now==1){

        x+=(mouseX-oldX);

        y+=(mouseY-oldY);

       }

    else if(now==2){

        angle += (mouseX-oldX);

    }

    else if(now==3){

        if(mouseX>oldX) scale = scale * 1.01;

        if(mouseX<oldX) scale= scale * 0.99;

    }

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);

    glutCreateWindow("week06 keyboard mouse motion");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}