是你是你反詐騙 Week04

✨Mouse

#include <GL/glut.h>

#include <stdio.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 

    glutSolidTeapot(0.3); 

    glutSwapBuffers(); 

}

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

{

    printf("button:%d state:%d x:%d y:%d\n",button,state,x,y);///button0:右鍵 1:滾輪 2:左鍵

}///state0:按下 1:放開

int main(int argc,char **argv) 

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("mouse week04");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);///滑鼠迴圈

    glutMainLoop();

}

 *新增的程式

_____________________________________________________________________

✨紀錄座標

⬆紀錄滑鼠位置

⬆滑鼠座標畫出來的多邊形

#include <GL/glut.h> ///使用GLUT外掛

#include <stdio.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBegin(GL_POLYGON);///多邊形

     glVertex3f((117-150)/150.0, -(128-150)/150.0,0);

     glVertex3f((147-150)/150.0, -(124-150)/150.0,0);

     glVertex3f((141-150)/150.0, -(116-150)/150.0,0);

     glVertex3f((158-150)/150.0, -(112-150)/150.0,0);

     glVertex3f((155-150)/150.0, -(121-150)/150.0,0);

     glVertex3f((183-150)/150.0, -(129-150)/150.0,0);

     glVertex3f((191-150)/150.0, -(150-150)/150.0,0);

     glVertex3f((199-150)/150.0, -(147-150)/150.0,0);

     ///剛剛印出來的座標

    glEnd();

    glutSwapBuffers();

}

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

{

    if(state==GLUT_DOWN)

    {

        printf("glVertex3f((%d-150)/150.0, -(%d-150)/150.0,0);\n",x,y);///印出滑鼠按下的位置

    }

}

int main(int argc,char **argv) 

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("mouse week04");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

________________________________________________________________

✨移動

#include <GL/glut.h>

#include <stdio.h>

float teapotX=0,teapotY=0;///茶壺的座標

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();///矩陣備份

        glTranslatef(teapotX, teapotY, 0);///照著座標移動

        glutSolidTeapot(0.3);

    glPopMatrix();///矩陣還原

    glEnd();

    glutSwapBuffers();

}

void motion(int x,int y)///mouse motion的函式

{

    teapotX =(x-150)/150.0;///換算座標

    teapotY =-(y-150)/150.0;

}

int main(int argc,char **argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("mouse week04");

    glutDisplayFunc(display);

    glutMotionFunc(motion);///移動時的函式

    glutMainLoop();

}

_________________________________________________________________

✨移動 旋轉 縮放

glTranslatef(x,y,z);///移動

glRotatef(角度,x,y,z);///有四個向量!旋轉 (右手定律

glScalef(x,y,z);///縮放

⬆Y軸為中心旋轉