Lisa的電腦圖學 - week03 移動

➤ Week03_下載上課資料

    1. 從 https://jsyeh.org/3dcg10/ 下載 data .zip / win32 / glut32.dll

    2. 解壓縮

        windowe.zip 

➤ Week03-1_translate

    1. 複製week02-1_GLUT_first 的程式碼，並新增以下程式碼

#include <GL/glut.h>

void display()

{

    glPushMatrix();

        glTranslatef(0.5, 0, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMainLoop();

}

➤ Week03-1_用滑鼠控制茶壺

#include <GL/glut.h>

void display()

{

    glPushMatrix();

        glTranslatef(0.5, 0, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

#include <stdio.h>

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_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

➤ Week03-1_按滑鼠左鍵移動茶壺

#include <GL/glut.h>

float X=0, Y=0;

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

    glPushMatrix();

        glTranslatef( X, Y, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    X =  ( x-150 ) / 150.0 ;

    Y = -( y-150 ) / 150.0 ;

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();