XCweek04

 week04

1.到 https://jsyeh.org/3dcg10/下載win32跟data

    windows.zip =>下載\windows\Transformation.exe

    data.zip =>下載\windows\data\很多模型檔

    執行 下載\windows\Transformation.exe

2.接著打開Transformation.exe,會出現畫面

3.開啟以前的程式 加入三行程式碼

4.用座標讓他變成四個

#include <GL/glut.h>

void myTeapot(float x, float y)///自定義函數

{

    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("week04茶壺");

    glutDisplayFunc( display );

    glutMainLoop();

    return 0;

}

5.滑鼠事件

int 一個mouse外掛事件

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

            {

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

            }

整體程式碼

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("week04 mouse");

    glutDisplayFunc( display );

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}

點擊一下會出現座標

6.用滑鼠事件培和茶壺去讓滑鼠控制茶壺，使茶壺會因為你滑鼠點擊的位子而做改變

#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)

{

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

    mouseX=x; mouseY=y;

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week04 mouse");

    glutDisplayFunc( display );

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}

7.滑鼠事件線段

#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)

{

    //printf("%d %d %d %d\n", button, state, x, 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("week04 mouse");

    glutDisplayFunc( display );

    glutMouseFunc(mouse);

    glutMainLoop();

    return 0;

}