Penggambaran Objek Garis

/* pratikum 02
*membuat objek primitif : titik, garis
*/

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <glut.h>

#define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES); \
glVertx2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd();
void init(void)
{
glClearColor (0.0, 0.0, 0.0, 0.0);
glShadeModel (GL_FLAT);
}


void display(void)
{
int i;
glClear (GL_COLOR_BUFFER_BIT);/* select white for all lines */
glColor3f (1.0, 1.0, 1.0);
glEnable (GL_LINE_STIPPLE);
glLineStipple (1, 0x0101); /* dotted */
drawOneLine (50.0, 125.0, 150.0, 125.0);
glLineStipple (1, 0x00FF); /* dashed */
drawOneLine (150.0, 125.0, 250.0, 125.0);
glLineStipple (1, 0x1c47); /* dash/dot/dash */
drawOneLine (250.0, 125.0, 350.0, 125.0);
/* in 2nd row, 3 wide lines, each whith different stipple */
glLineWidth (5.0);
glLineStipple (1, 0x0101); /* dotted */
drawOneLine (50.0, 100.0, 150.0, 100.0);
glLineStipple (1, 0x00FF); /* dashed */
drawOneLine (150.0, 100.0, 250.0, 100.0);
glLineStipple (1, 0x1c47); /* dash/dot/dash */
drawOneLine (250.0, 100.0, 350.0, 100.0);
/* in 3nd row, 6 lines, whith dash/dot/dash stipple */
/* as part of a single connected line strip */
glLineWidth (1.0);
glBegin (GL_LINE_STRIP);
for (1 = 0; i < 7; i++)
glVertex2f (50.0 + ((GLfloat) i * 50.0), 75.0);
glEnd ();
/* in 4th row, 6 independent lines with same stipple */
for (i = 0; i < 6; i++){
drawOneLine (50.0 + ((GLfloat) i * 50.0), 50.0,
50.0 + ((GLfloat) (i+1) * 50.0), 50.0);
}
/* in 5nd row, 1 lines, whith dash/dot/dash stipple */
/* and a stipple repeat factor of 5 */
glLineStipple (5, 0x1c47); /* dash/dot/dash */
drawOneLine (50.0, 25.0, 350.0, 25.0);
glDisable (GL_LINE_STIPPLE);
glFlush ();
}
void reshape (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluOtho2D (0.0, (GLdouble) w, 0.0, (GLdouble) h);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (400,150);
glutInitWindowPosition (100, 100);
glutCreateWindow (argv [0]);
init ();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop ();
return 0;

}