Week16總複習

 Week16

先裝git hub !!

晚點裝會當機!

到https://github.com/jsyeh/2023graphicsa有老師的程式碼

1.滑鼠點擊茶壺可以移動位子 產生座標

#include <GL/glut.h>

#include <stdio.h>

float teapotX=0, teapotY=0, angle=0, oldX=0, oldY=0;

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

    oldX = x;

    oldY = y;

}

void motion(int x, int y) {

    teapotX = (x-150) / 150.0;///angle += x - oldX; ///

    teapotY = (150-y) / 150.0;///oldX = x;          ///

    printf("glTranslatef(%.3f , %.3f , 0 );\n", teapotX, teapotY);

    glutPostRedisplay();

}

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        ///glTranslatef(....);

        ///glRotatef(angle, 0, 0, 1);

        ///glTranslatef(....);

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot( 0.01 );

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    glutMainLoop();

}