UTS Q (komputer grafis)

1.Prosedur membuat segiempat

void kotak(int x1, int y1, int x2, int y2, int r, int g, int b )

{

glColor3f(r,g,b);

glBegin(GL_LINES);

for (int i=y1; i<=y2; i++)

{

glVertex2i(x1,i);

glVertex2i(x2,i);

}

glEnd();

}

2.Prosedur membuatgaris lengkung

void lengkungan(int x, int y, int jari,int awal, int akhir, int r, int g, int b )

{

glPointSize(3);

int x1,y1;

float rad = 3.14/180;

glColor3f(r,g,b);

glBegin(GL_POINTS);

for (int a=awal; a<=akhir; a++)

{

x1=jari*cos(a*rad);

y1=jari*sin(a*rad);

glVertex2f(x+x1,y+y1);

}

glEnd();

}

3.Prosedur membuat tembereng

void tembereng(int x, int y, int jari,int mula, int akhir, int r, int g, int b )

{

glPointSize(3);

int x1,y1;

float rad = 3.14/180;

glColor3f(r,g,b);

glBegin(GL_LINES);

for (int a=mula; a<=akhir; a++)

{

x1=jari*cos(a*rad);

y1=jari*sin(a*rad);

glVertex2i(x,y);

glVertex2i(x+x1,y+y1);

}

glEnd();

}

4.Membuat gambar mobil dari prosedur no 1-3

#include

#include

void lengkungan(int x, int y, int jari,int awal, int akhir, int r, int g, int b )

{

glPointSize(3);

int x1,y1;

float rad = 3.14/180;

glColor3f(r,g,b);

glBegin(GL_POINTS);

for (int a=awal; a<=akhir; a++)

{

x1=jari*cos(a*rad);

y1=jari*sin(a*rad);

glVertex2f(x+x1,y+y1);

}

glEnd();

}

void lingk_penuh(int x, int y, int jari, int r, int g, int b )

{

int x1,y1;

float rad = 3.14/180;

glColor3f(r,g,b);

glBegin(GL_POINTS);

for (int v=0; v<=jari; v++)

{

for (int a=0; a<=360; a++)

{

x1=v*cos(a*rad);

y1=v*sin(a*rad);

glVertex2f(x+x1,y+y1);

}

}

glEnd();

}

void kotak(int x1, int y1, int x2, int y2, int r, int g, int b )

{

glColor3f(r,g,b);

glBegin(GL_LINES);

for (int i=y1; i<=y2; i++)

{

glVertex2i(x1,i);

glVertex2i(x2,i);

}

glEnd();

}

void userdraw()

{

lengkungan(260,220,59,90,180,1,0,0);//lengkung kaca

kotak(260,220,340,280,1,0,0);//jendela kotak

kotak(200,150,490,220,0,0,0);//badan mobil

lengkungan(199,199,10,90,270,1,0,0);//lamp dpn

lengkungan(490,160,9,275,436,1,0,0);//lamp blakang

lengkungan(270,150,34,2,178,1,0,0);// lengkungan ban dpn

lingk_penuh(270,150,28,0,0,0);//ban depan

lengkungan(420,150,34,2,178,1,0,0);//lengkung ban belakang

lingk_penuh(420,150,28,0,0,0);//ban belakang

lingk_penuh(270,150,1,1,1,1);//tengah ban blk

lingk_penuh(420,150,1,1,1,1);//tengah ban blk

}

void display(void)

{

glClear(GL_COLOR_BUFFER_BIT);

userdraw();

glutSwapBuffers();

}

int main(int argc, char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);

glutInitWindowPosition(400,200);

glutInitWindowSize(640,480);

glutCreateWindow("Mobil");

glClearColor(1,1,1,0.0);

gluOrtho2D(0,640,0,480);

glutIdleFunc(display);

glutDisplayFunc(display);

glutMainLoop();

return 0;

}