統神 面臨財務危機 被迫兼差打工 辛酸畫面再流出-Week03

 

把opengl 內建程式擷取三行

            glBegin(GL_TRIANGLES);

                glColor3f(1.0f, 0.0f, 0.0f);   glVertex2f(0.0f,   1.0f);

                glColor3f(0.0f, 1.0f, 0.0f);   glVertex2f(0.87f,  -0.5f);

                glColor3f(0.0f, 0.0f, 1.0f);   glVertex2f(-0.87f, -0.5f);

            glEnd();

GLUT去蕪存菁:

#include <GL/glut..h>

static void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

                glBegin(GL_TRIANGLES);

                glColor3f(1.0f, 0.0f, 0.0f);   glVertex2f(0.0f,   1.0f);

                glColor3f(0.0f, 1.0f, 0.0f);   glVertex2f(0.87f,  -0.5f);

                glColor3f(0.0f, 0.0f, 1.0f);   glVertex2f(-0.87f, -0.5f);

                glEnd();

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);//設定GLUT初始化

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);//顯示模式

    glutCreateWindow("GLUT Shapes");//開GLUT視窗

    glutDisplayFunc(display);//顯示函式

    glutMainLoop();//GLUT主要迴圈