#include <GL/glut.h>
void SetupRC() {
glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
glColor3f(0.0f, 0.0f, 0.0f);
glLineWidth(20);
glPointSize(20);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(-500.0, 500.0, -500.0, 500.0);
}
void RenderScene() {
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_LINE_STRIP);
glVertex2f(-400, 0);
glVertex2f(-200, 300);
glVertex2f(0, 0);
glVertex2f(200, 300);
glVertex2f(400, 0);
glEnd();
glFlush();
}
int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(500, 500);
glutCreateWindow("GL");
SetupRC();
glutDisplayFunc(RenderScene);
glutMainLoop();
return 0;
}
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