電腦圖學筆記

1. 至https://jsyeh.org/3dcg10 下載data , win32
2. windows.zip解壓縮 >> windows / transformation.exe
3. data.zip解壓縮 >> windows / data / 模型obj
4. 把data檔案放進windows >> 執行transformation.exe

======================================================================================

keyboard

#include <stdio.h>

#include <GL/glut.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("第5週的程式");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

#include <stdio.h>

#include <GL/glut.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+=(mouseY-oldY);

    oldX = mouseX; oldY = mouseY;

    display();

}

int main(int argc,char** argv){

    glutInit( &argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("第5週的程式");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

他會跟著滑鼠移動

#include <stdio.h>

#include <GL/glut.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+=(mouseY-oldY);

    oldX = mouseX; oldY = mouseY;

    display();

}

int main(int argc,char** argv){

    glutInit( &argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("第5週的程式");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

#include <stdio.h>

#include <GL/glut.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( mouseX-oldX > 0) scale *=1.01;

    if( mouseX-oldX < 0) 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("第5週的程式");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}