Zfish week04

 一:

    1.前往 https://jsyeh.org/3dcg10/，下載[data][win32]。

2.解壓縮後，將data資料夾移到windows資料夾中。

3.執行Transformation.exe

4.執行畫面

(右鍵可切換模型，Translate-移動、Rotate-旋轉、Scale-縮放)

二:

1-1.根據week01步驟，建立一個GLUT專案。

1-2.畫一個茶壺。

1-3.移動位置(Translate)。

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(0.3, 0.2, 0); //移動

        glColor3f(1, 0, 0);

        glutSolidTeapot(0.3);

    glPopMatrix(); 

    glutSwapBuffers();

}

int main(int argc, char **argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("HW2 ");

    glutDisplayFunc(display);

    glutMainLoop();

}

2.利用函式畫多個茶壺

#include <GL/glut.h>

void myTeapot(float x, float y){

    glPushMatrix();

        glTranslatef(x,y,0);

        glutSolidTeapot(0.3);

}

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("HW2  ");

    glutDisplayFunc(display);

    glutMainLoop();

}

3.滑鼠事件(顯示滑鼠座標)

#include <GL/glut.h>

#include <stdio.h>

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);///button(0-左鍵,1-中鍵,1-右鍵)、state(0-點下,1-放開)

}

int main(int argc, char **argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week04_mouse  ");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

4.滑鼠移動茶壺

#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);///根據滑鼠移動茶壺

        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();

}

5.滑鼠畫圖，並顯示程式碼

#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);///顯示程式碼

        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();

}