7Hao-計算機圖學-Week02

主題：點、線、面、色彩

程式碼:

#include <GL/glut.h>

void display()

{

    glClearColor(1,0,0,0); ///背景顏色R,G,B,A

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,0,1);  ///3種0.0~1.0的RGB參數 1,0,1表紫色

    glutSolidTeapot(0.3); 

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMainLoop();

}

執行結果:

-

程式碼:

#include <GL/glut.h>
void display()
{
    glClearColor(1,0,0,0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3f(1,0,1);

    glBegin(GL_POLYGON); ///開始畫多邊形
    glVertex3f(1,1,0);  ///X,Y,Z座標
    glVertex3f(-1,1,0);
    glVertex3f(0,-1,0);
    glEnd(); ///結束畫

    glutSwapBuffers();
}
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("GLUT Shapes");
    glutDisplayFunc(display);
    glutMainLoop();
}

執行結果: