52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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#include <glut.h>
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int width = 640;
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int height = 480;
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void init(int argc, char** argv) {
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glutInit(&argc, argv); // Initialisierung der GLUT Bibliothek
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glutInitDisplayMode(GLUT_SINGLE); // Initialisierung des Single Buffer Modes
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glutInitWindowSize(width, height); // Fenstergröße in Pixel (Breite, Hoehe)
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glutInitWindowPosition(100, 100); // Fensterposition in Pixel, ausgehend vom Ursprung des Window Systems
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glViewport(0,0,width,height);
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glutCreateWindow("Hello world"); // Erstellen des Fensters
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluOrtho2D(0, width, 0, height);
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glMatrixMode(GL_MODELVIEW);
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}
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void display(void)
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{
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char *myText = "Hello World!";
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int j;
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glColor3f(1.0,0.0,0.0);
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glBegin(GL_POLYGON);
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glVertex3f((width/2)-(width/4), (height/2)-(height/4), 0.0);
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glVertex3f((width/2)+(width/4), (height/2)-(height/4), 0.0);
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glVertex3f((width/2)+(width/4), (height/2)+(height/4), 0.0);
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glVertex3f((width/2)-(width/4), (height/2)+(height/4), 0.0);
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glEnd();
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glColor3f(1.0,1.0,1.0);
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glRasterPos2i((width/2)-(width/4)+10,(height/2)-(height/4)+10);
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for (j=0; j<strlen(myText); j++) {
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glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18,myText[j]);
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}
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glFlush();
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}
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int main(int argc, char** argv)
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{
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init(argc, argv);
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glutDisplayFunc(display); // Callback-Funktion für das Fenster
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glutMainLoop(); // Abgabe der Kontrolle an GLUT-Bibliothek
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return 0;
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}
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