penggambaran garis dengan algoritma DDA dan bresenham

Senin, 08 April 2013

Selamat Malem teman-teman,
 Sebelum saya mengerjakan tugas kuliah apah salahnya saya untuk posting dulu, barang kali artikel saya bermafaat buat teman-teman.
ok langsung saja kali ini saya akan memposting tetang penggambaran garis dengan algoritma DDA dan bresenham, tidak lama-lama langsung saja ini source code nya :

#include <windows.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <glut.h>

#include <math.h>

voiddisplay(void)

{

glClearColor (1.0 ,1.0, 1.0, 0.0);

glMatrixMode (GL_PROJECTION);

gluOrtho2D (0.0, 300.0, 0.0, 300.0);

}

voidsetPixel (GLint xCoordinate, GLint yCoordinate)

{

glBegin(GL_POINTS);

glVertex2i (xCoordinate, yCoordinate);

glEnd();

glFlush();

}

voidlineBres(GLint x0, GLint y0, GLint xEnd, GLint yEnd)

{

GLint dx = (float)fabs((float) xEnd - x0);

GLint dy = (float)fabs((float) yEnd - y0);

GLint p = 2 * (dy-dx);

GLint twoDy = 2 * dy;

GLint twoDyMinusDx = 2 * (dy-dx);

GLint x,y;

if (x0 > xEnd){

x = xEnd;

y = yEnd;

xEnd = x;

}else{

x = x0;

y = y0;

}

setPixel (x,y);

while(x<xEnd){

x++;

if(p<0)

p  += twoDy;

else{

y++;

p += twoDyMinusDx;

}

setPixel(x,y);

}

}

voiddrawMyLine(void)

{

glClear (GL_COLOR_BUFFER_BIT);

glColor3f (1.0, 0.0, 0.0);

glPointSize (4.0);

GLint x0 = 100;

GLint y0 = 100;

GLint xEnd = 200;

GLint yEnd = 100;

lineBres (x0, y0, xEnd, yEnd);

glColor3f (0.0, 0.0, 1.0);

glPointSize (4.0);

GLint x1 = 100;

GLint y1 = 200;

GLint xEnd1 = 200;

GLint yEnd1 = 200;

lineBres (x1, y1, xEnd1, yEnd1);

glColor3f (1.0, .0, 1.0);

glPointSize (4.0);

GLint x2 = 100;

GLint y2 = 300;

GLint xEnd2 = 200;

GLint yEnd2 = 300;

lineBres (x2, y2, xEnd2, yEnd2);

}

intmain (int argc, char** argv)

{

glutInit (&argc, argv);

glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);

glutInitWindowSize (400, 400);

glutInitWindowPosition (0, 0);

glutCreateWindow ("Digital Differential Anallyzer Algorithm");

display();

glutDisplayFunc (drawMyLine);

glutMainLoop();

return 0;

}

Dan ini Hasil Output nya :

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Objek Primitif Poligon Grafika Komputer

Selamat malem sahabat blogger,
 Kali ini saya akan memposting cara membuat Program Objek Primitif Poligon (Grafika Komputer), ok langsung saja saya kasih source code nya :

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

void display(void)
{
GLubyte fly[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x03, 0x80, 0x01, 0xC0, 0x06, 0xC0, 0x03, 0x60,
0x04, 0x60, 0x06, 0x20, 0x04, 0x30, 0x0C, 0x20,
0x04, 0x18, 0x18, 0x20, 0x04, 0x0C, 0x30, 0x20,
0x04, 0x06, 0x60, 0x20, 0x44, 0x03, 0xC0, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x66, 0x01, 0x80, 0x66, 0x33, 0x01, 0x80, 0xCC,
0x19, 0x81, 0x81, 0x98, 0x0C, 0xC1, 0x83, 0x30,
0x07, 0xe1, 0x87, 0xe0, 0x03, 0x3f, 0xfc, 0xc0,
0x03, 0x31, 0x8c, 0xc0, 0x03, 0x33, 0xcc, 0xc0,
0x06, 0x64, 0x26, 0x60, 0x0c, 0xcc, 0x33, 0x30,
0x18, 0xcc, 0x33, 0x18, 0x10, 0xc4, 0x23, 0x08,
0x10, 0x63, 0xC6, 0x08, 0x10, 0x30, 0x0c, 0x08,
0x10, 0x18, 0x18, 0x08, 0x10, 0x00, 0x00, 0x08};
GLubyte halftone[] = {
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55};

glClear (GL_COLOR_BUFFER_BIT);
glColor3f (1.0, 1.0, 1.0);
glRectf (25.0, 25.0, 125.0, 125.0);
glEnable (GL_POLYGON_STIPPLE);
glPolygonStipple (fly);
glRectf (125.0, 25.0, 225.0, 125.0);
glPolygonStipple (halftone);
glRectf (225.0, 25.0, 325.0, 125.0);
glColor3f (1.0, 1.0, 0.0);
glDisable (GL_POLYGON_STIPPLE);
glFlush ();
}
void init (void)

{
glClearColor (0.0, 0.0, 0.0, 0.0);
glShadeModel (GL_FLAT);
}
void reshape (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluOrtho2D (0.0, (GLdouble) w, 0.0, (GLdouble) h);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (550, 150);
glutCreateWindow (argv[0]);
init ();
glutDisplayFunc (display);
glutReshapeFunc (reshape);
glutMainLoop();
return 0;
}

Lalu ini adalah Outputnya :

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