lap grafika
TRANSCRIPT
LAPORAN GRAFIKA KOMPUTER
“APLIKASI MENGGUNAKAN BORLAN C++ BUILDER”
Disusun oleh :
1. WAHYU NURHIDAYAT 123070015
2. DHODI YUDHA PRADANA 123070055
3. PUTRA TEGUH P 123070043
4. YANUAR 123070045
5. GAUTAMA MAHARDIKA 123080088
Dosen :
Herry Sofyan, S.T., M.T.
JURUSAN TEKNIK INFORMATIKA
FAKULTAS TEKNOLOGI INDUSTRI
UNIVERSITAS PEMBANGUNAN NASIONAL “VETERAN”
YOGYAKARTA
2009
BAB I
PENDAHULUAN
1. Latar Belakang
Grafika computer (computer graphics) adalah seperangkat alat yang terdiri
dari hardware dan software yang digunakan untuk membuat desain, grafik
presentasi, computer art, pendidikan , hiburan, visualisasi, pengolahan citra dan
GUI. Grafika computer salah satu mata kuliah yang menyenangkan untuk
dipelajari dari bidang ilmu computer karena untuk dapat memahaminya dan dapat
mengimplementasikannya dengan baik diperlukan kemampuan matematik,
keahlian untuk memprogram dan kreativitas. Dengan menggunakan aplikasi ini
banyak variasi yang dapat dihasilkan. Untuk menghasilkan gambar dan variasi
sesuai dengan yang diinginkan, dalam aplikasi ini diterapakan beberapa konsep
premrograman grafika computer dengan perhitungan matematika
2. Rumusan Masalah
Bagaimana membuat aplikasi grafika yang dapat digunakan untuk melakukan
pemrosesan pembuatan objek, pewarnaan, zooming, translasi / perpindahan objek,
rotasi dan pencerminan.
3. Batasan Masalah
Objek yang dibuat diantaranya segitiga, lingkaran, persegi,segilima, dan
elips
Apliksi ini dapat melakukan pewarnaan, rotasi, pencerminan, zooming
dan translasi/perpindahan.
4. Manfaat
Aplikasi ini memiliki beberapa variasi diantaranya pembuatan objek,
pewarnaan, zooming , translasi / perpindahan objek, rotasi dan pencerminan, yang
seluruhnya diimplementasikan dari konsep-konsep perhitungan matematika dalam
pembuatan algoritma pemrogramannya dan dengan dibuatnya aplikasi ini proses
belajar semakin jelas dan lebih mudah untuk dipahami.
5. Tujuan
Memberikan variasi dalam pembuatan objek .
Untuk memenuhi tugas mata kuliah grafika computer.
Membuat aplikasi yang menerapkan konsep-konsep perhitungan matematika
dalam pembuatan algoritma programannya
BAB II
DASAR TEORI
A. Grafika Komputer
Grafika computer (computer graphics) adalah seperangkat alat yang terdiri dari
hardware dan software yang digunakan untuk membuat desain, grafik presentasi, computer
art, pendidikan , hiburan, visualisasi, pengolahan citra dan GUI. Grafika dapat dijumpai
dalam berbagai aplikasi seperti design,grafik persentasi,pendidikan,hiburan dan juga
pengolahan citra.
B. C++ Builder
C++ Builder merupakan salah satu bahasa pemograman yang dapat membuat
aplikasi-aplikasi yang berbasis muldimedia atau visual.dengan C++ builder pembuatan
aplikasi akan bejalan lebih mudah,ini dikarenakan dalam aplikasi ini kita dapat langsung
menambahkan buton-buton atau tampilan gambarnya. Hal ini memudahkan dalam
membuat aplikasi yang berbasis grafis.
BAB III
PERANCANGAN
A. Source Code Form Activated
void __fastcall TForm1::FormActivate(TObject *Sender){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height);}
B. Source Code Form Show
void __fastcall TForm1::FormShow(TObject *Sender){ if(bangun=="kotak"){ int i; Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); Image1->Canvas->MoveTo(el[1].x,el[1].y); for(i=1; i<=4; i++){ Image1->Canvas->LineTo(el[i].x,el[i].y); } Image1->Canvas->LineTo(el[1].x,el[1].y); if(ComboBox1->ItemIndex == 0 ){ BoundaryFill(el[5].x,el[5].y,clRed,clBlack); } if(ComboBox1->ItemIndex == 1 ){ BoundaryFill(el[5].x,el[5].y,clWhite,clBlack); } if(ComboBox1->ItemIndex == 2 ){ BoundaryFill(el[5].x,el[5].y,clYellow,clBlack); } if(ComboBox1->ItemIndex == 3 ){ BoundaryFill(el[5].x,el[5].y,clGreen,clBlack); } if(ComboBox1->ItemIndex == 4 ){ BoundaryFill(el[5].x,el[5].y,clBlue,clBlack); } } if(bangun=="segilima"){ int i; Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); Image1->Canvas->MoveTo(el[1].x,el[1].y); for(i=1; i<=5; i++){ Image1->Canvas->LineTo(el[i].x,el[i].y); } Image1->Canvas->LineTo(el[1].x,el[1].y); if(ComboBox1->ItemIndex == 0 ){ BoundaryFill(el[6].x,el[6].y,clRed,clBlack); } if(ComboBox1->ItemIndex == 1 ){ BoundaryFill(el[6].x,el[6].y,clWhite,clBlack); } if(ComboBox1->ItemIndex == 2 ){ BoundaryFill(el[6].x,el[6].y,clYellow,clBlack);
} if(ComboBox1->ItemIndex == 3 ){ BoundaryFill(el[6].x,el[6].y,clGreen,clBlack); } if(ComboBox1->ItemIndex == 4 ){ BoundaryFill(el[6].x,el[6].y,clBlue,clBlack); } } if(bangun=="segitiga"){ int i; Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); Image1->Canvas->MoveTo(el[1].x,el[1].y); for(i=1; i<=3; i++){ Image1->Canvas->LineTo(el[i].x,el[i].y); } Image1->Canvas->LineTo(el[1].x,el[1].y); if(ComboBox1->ItemIndex == 0 ){ BoundaryFill(el[4].x,el[4].y,clRed,clBlack); } if(ComboBox1->ItemIndex == 1 ){ BoundaryFill(el[4].x,el[4].y,clWhite,clBlack); } if(ComboBox1->ItemIndex == 2 ){ BoundaryFill(el[4].x,el[4].y,clYellow,clBlack); } if(ComboBox1->ItemIndex == 3 ){ BoundaryFill(el[4].x,el[4].y,clGreen,clBlack); } if(ComboBox1->ItemIndex == 4 ){ BoundaryFill(el[4].x,el[4].y,clBlue,clBlack); } } if(bangun=="bersih"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); }}
C. Source Code Image Mouse Down
void __fastcall TForm1::Image1MouseDown(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y){ if(ComboBox1->ItemIndex == 0 ){ BoundaryFill(X,Y,clRed,clBlack); } if(ComboBox1->ItemIndex == 1 ){ BoundaryFill(X,Y,clWhite,clBlack); } if(ComboBox1->ItemIndex == 2 ){ BoundaryFill(X,Y,clYellow,clBlack); } if(ComboBox1->ItemIndex == 3 ){ BoundaryFill(X,Y,clGreen,clBlack); } if(ComboBox1->ItemIndex == 4 ){ BoundaryFill(X,Y,clBlue,clBlack); }}
D. Source Code Button New
void __fastcall TForm1::BitBtn4Click(TObject *Sender){ Image1->Canvas->Pen->Width = 0; bangun="bersih"; FormShow(Sender);}
E. Source Code Button Lingkaran
void __fastcall TForm1::BitBtn1Click(TObject *Sender){ a =((Image1->Width)/2); b =((Image1->Height)/2); c = 30; Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a,b,c); bangun="lingkaran";}
void __fastcall TForm1::CircleMidPoint(int XC, int YC, int R){ int x, y, p, k=0; x=0; y=R; p=1-R; do { k++; if(p<0) { x=x+1; } else { x=x+1; y=y-1; } if(p<0) { p=p+2*x+1; } else { p=p+2*(x-y)+1; } CirclePlotPoint(XC, YC, x, y); } while(x<y); Image1->Canvas->Pixels[XC][YC+R]=clBlack; Image1->Canvas->Pixels[XC-R][YC]=clBlack; Image1->Canvas->Pixels[XC+R][YC]=clBlack; Image1->Canvas->Pixels[XC][YC-R]=clBlack; c=R;}
void __fastcall TForm1::CirclePlotPoint(int XC, int YC, int X, int Y){ Image1->Canvas->Pixels[XC+X][YC+Y]=clBlack; Image1->Canvas->Pixels[XC-X][YC+Y]=clBlack; Image1->Canvas->Pixels[XC+X][YC-Y]=clBlack; Image1->Canvas->Pixels[XC-X][YC-Y]=clBlack; Image1->Canvas->Pixels[XC+Y][YC+X]=clBlack;
Image1->Canvas->Pixels[XC-Y][YC+X]=clBlack; Image1->Canvas->Pixels[XC+Y][YC-X]=clBlack; Image1->Canvas->Pixels[XC-Y][YC-X]=clBlack;
a=XC;b=YC;}
F. Source Code Button Kotak
void __fastcall TForm1::BitBtn2Click(TObject *Sender){ el[1].x=((Image1->Width)/2)-20; el[1].y=((Image1->Height)/2)-20; el[2].x=((Image1->Width)/2)+20; el[2].y=((Image1->Height)/2)-20; el[3].x=((Image1->Width)/2)+20; el[3].y=((Image1->Height)/2)+20; el[4].x=((Image1->Width)/2)-20; el[4].y=((Image1->Height)/2)+20; el[5].x=((el[1].x+el[2].x+el[3].x+el[4].x)/4); el[5].y=((el[1].y+el[2].y+el[3].y+el[4].y)/4); bangun="kotak"; FormShow(Sender);}
G. Source Code Button Segitiga
void __fastcall TForm1::BitBtn3Click(TObject *Sender){ el[1].x=((Image1->Width)/2); el[1].y=((Image1->Height)/2)-20; el[2].x=((Image1->Width)/2)+20; el[2].y=((Image1->Height)/2)+20; el[3].x=((Image1->Width)/2)-20; el[3].y=((Image1->Height)/2)+20; el[4].x=((el[1].x+el[2].x+el[3].x)/3); el[4].y=((el[1].y+el[2].y+el[3].y)/3); bangun="segitiga"; FormShow(Sender);}
H. Source Code Button Segilima
void __fastcall TForm1::BitBtn14Click(TObject *Sender){ el[1].x=((Image1->Width)/2)-20; el[1].y=((Image1->Height)/2)-20; el[2].x=((Image1->Width)/2)+20; el[2].y=((Image1->Height)/2)-20; el[3].x=((Image1->Width)/2)+20; el[3].y=((Image1->Height)/2)+20; el[4].x=((Image1->Width)/2); el[4].y=((Image1->Height)/2)+40; el[5].x=((Image1->Width)/2)-20; el[5].y=((Image1->Height)/2)+20; el[6].x=((el[1].x+el[2].x+el[3].x+el[4].x+el[5].x)/5); el[6].y=((el[1].y+el[2].y+el[3].y+el[4].y+el[5].y)/5); bangun="segilima"; FormShow(Sender);}
I. Source Code Button Ellips
void __fastcall TForm1::BitBtn20Click(TObject *Sender){ a =((Image1->Width)/2); b =((Image1->Height)/2); c = 25; d = 40;
Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,b,c,d); bangun="ellips";}
void __fastcall TForm1::EllipsMidPoint(int xc,int yc, int rx, int ry){ int p=0;int k=0; int Rx2=rx*rx; int Ry2=ry*ry; int TwoRx2=2*Rx2; int TwoRy2=2*Ry2; int x=0; int y=ry; int px=0; int py=TwoRx2*y; do { if((2*ry*ry*x)<(2*rx*rx*y)) { p=abs(Ry2-(Rx2*ry)+(0.25*Rx2)); ellipsPlotPoint(float(xc),float(yc), x, y); while(px<py){ x++; k++; px=px+TwoRy2; if(p<0) p += Ry2 + px; else { y--; py -=TwoRx2; p += Ry2+px-py; } ellipsPlotPoint(float(xc),float(yc), x, y); }} p=abs(Ry2*(x+0.5)*(x+0.5)+Rx2*(y-1)*(y-1)-Rx2*Ry2); while(y>0) { y--; py =py-TwoRx2; if(p>0) p += Rx2 - py; else { x++; k++; px +=TwoRy2; p += Ry2+px-py; } ellipsPlotPoint(float(xc),float(yc), x, y); }} while(x<y);}
void __fastcall TForm1::ellipsPlotPoint(int xc, int yc, int x, int y){ Image1->Canvas->Pixels[xc+x][yc+y]=clBlack; Image1->Canvas->Pixels[xc-x][yc+y]=clBlack; Image1->Canvas->Pixels[xc+x][yc-y]=clBlack; Image1->Canvas->Pixels[xc-x][yc-y]=clBlack;}
J. Source Code Button Translasi ke Kiri Atas
void __fastcall TForm1::BitBtn5Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x-k; el[1].y=el[1].y-k; el[2].x=el[2].x-k; el[2].y=el[2].y-k; el[3].x=el[3].x-k; el[3].y=el[3].y-k; el[4].x=el[4].x-k; el[4].y=el[4].y-k; el[5].x=el[5].x-k; el[5].y=el[5].y-k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x-k; el[1].y=el[1].y-k; el[2].x=el[2].x-k; el[2].y=el[2].y-k; el[3].x=el[3].x-k; el[3].y=el[3].y-k; el[4].x=el[4].x-k; el[4].y=el[4].y-k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a-k,b-k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x-k; el[1].y=el[1].y-k; el[2].x=el[2].x-k; el[2].y=el[2].y-k; el[3].x=el[3].x-k; el[3].y=el[3].y-k; el[4].x=el[4].x-k; el[4].y=el[4].y-k; el[5].x=el[5].x-k; el[5].y=el[5].y-k; el[6].x=el[6].x-k; el[6].y=el[6].y-k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a-k,b-k,c,d); bangun="ellips"; }}
K. Source Code Button Translasi ke Atas
void __fastcall TForm1::BitBtn6Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].y=el[1].y-k; el[2].y=el[2].y-k; el[3].y=el[3].y-k; el[4].y=el[4].y-k; el[5].y=el[5].y-k; bangun="kotak"; FormShow(Sender);
} if(bangun=="segitiga"){ el[1].y=el[1].y-k; el[2].y=el[2].y-k; el[3].y=el[3].y-k; el[4].y=el[4].y-k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a,b-k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].y=el[1].y-k; el[2].y=el[2].y-k; el[3].y=el[3].y-k; el[4].y=el[4].y-k; el[5].y=el[5].y-k; el[6].y=el[6].y-k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,b-k,c,d); bangun="ellips"; }}
L. Source Code Button Translasi ke Kanan Atas
void __fastcall TForm1::BitBtn7Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x+k; el[1].y=el[1].y-k; el[2].x=el[2].x+k; el[2].y=el[2].y-k; el[3].x=el[3].x+k; el[3].y=el[3].y-k; el[4].x=el[4].x+k; el[4].y=el[4].y-k; el[5].x=el[5].x+k; el[5].y=el[5].y-k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x+k; el[1].y=el[1].y-k; el[2].x=el[2].x+k; el[2].y=el[2].y-k; el[3].x=el[3].x+k; el[3].y=el[3].y-k; el[4].x=el[4].x+k; el[4].y=el[4].y-k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a+k,b-k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x+k; el[1].y=el[1].y-k;
el[2].x=el[2].x+k; el[2].y=el[2].y-k; el[3].x=el[3].x+k; el[3].y=el[3].y-k; el[4].x=el[4].x+k; el[4].y=el[4].y-k; el[5].x=el[5].x+k; el[5].y=el[5].y-k; el[6].x=el[6].x+k; el[6].y=el[6].y-k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a+k,b-k,c,d); bangun="ellips"; }}
M. Source Code Button Translasi ke Kiri
void __fastcall TForm1::BitBtn8Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x-k; el[2].x=el[2].x-k; el[3].x=el[3].x-k; el[4].x=el[4].x-k; el[5].x=el[5].x-k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x-k; el[2].x=el[2].x-k; el[3].x=el[3].x-k; el[4].x=el[4].x-k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a-k,b,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x-k; el[2].x=el[2].x-k; el[3].x=el[3].x-k; el[4].x=el[4].x-k; el[5].x=el[5].x-k; el[6].x=el[6].x-k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a-k,b,c,d); bangun="ellips"; }}
N. Source Code Button Translasi ke Kanan
void __fastcall TForm1::BitBtn9Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x+k; el[2].x=el[2].x+k; el[3].x=el[3].x+k; el[4].x=el[4].x+k; el[5].x=el[5].x+k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x+k; el[2].x=el[2].x+k; el[3].x=el[3].x+k; el[4].x=el[4].x+k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle (0,0,Image1->Width,Image1=>Height); CircleMidPoint(a+k,b,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x+k; el[2].x=el[2].x+k; el[3].x=el[3].x+k; el[4].x=el[4].x+k; el[5].x=el[5].x+k; el[6].x=el[6].x+k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle (0,0,Image1->Width,Image1->Height); EllipsMidPoint(a+k,b,c,d); bangun="ellips"; }}
O. Source Code Button Translasi ke Kiri Bawah
void __fastcall TForm1::BitBtn10Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x-k; el[1].y=el[1].y+k; el[2].x=el[2].x-k; el[2].y=el[2].y+k;
el[3].x=el[3].x-k; el[3].y=el[3].y+k; el[4].x=el[4].x-k; el[4].y=el[4].y+k; el[5].x=el[5].x-k; el[5].y=el[5].y+k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x-k; el[1].y=el[1].y+k; el[2].x=el[2].x-k; el[2].y=el[2].y+k; el[3].x=el[3].x-k; el[3].y=el[3].y+k; el[4].x=el[4].x-k; el[4].y=el[4].y+k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a-k,b+k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x-k; el[1].y=el[1].y+k; el[2].x=el[2].x-k; el[2].y=el[2].y+k; el[3].x=el[3].x-k; el[3].y=el[3].y+k; el[4].x=el[4].x-k; el[4].y=el[4].y+k; el[5].x=el[5].x-k; el[5].y=el[5].y+k; el[6].x=el[6].x-k; el[6].y=el[6].y+k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a-k,b+k,c,d); bangun="ellips"; }}
P. Source Code Button Translasi ke Bawah
void __fastcall TForm1::BitBtn11Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].y=el[1].y+k; el[2].y=el[2].y+k; el[3].y=el[3].y+k; el[4].y=el[4].y+k; el[5].y=el[5].y+k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].y=el[1].y+k; el[2].y=el[2].y+k; el[3].y=el[3].y+k; el[4].y=el[4].y+k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height);
CircleMidPoint(a,b+k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].y=el[1].y+k; el[2].y=el[2].y+k; el[3].y=el[3].y+k; el[4].y=el[4].y+k; el[5].y=el[5].y+k; el[6].y=el[6].y+k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,b+k,c,d); bangun="ellips"; }}
Q. Source Code Button Translasi ke Kanan Bawah
void __fastcall TForm1::BitBtn12Click(TObject *Sender){ int k = StrToInt(Edit1->Text); if(bangun=="kotak"){ el[1].x=el[1].x+k; el[1].y=el[1].y+k; el[2].x=el[2].x+k; el[2].y=el[2].y+k; el[3].x=el[3].x+k; el[3].y=el[3].y+k; el[4].x=el[4].x+k; el[4].y=el[4].y+k; el[5].x=el[5].x+k; el[5].y=el[5].y+k; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x+k; el[1].y=el[1].y+k; el[2].x=el[2].x+k; el[2].y=el[2].y+k; el[3].x=el[3].x+k; el[3].y=el[3].y+k; el[4].x=el[4].x+k; el[4].y=el[4].y+k; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a+k,b+k,c); bangun="lingkaran"; } if(bangun=="segilima"){ el[1].x=el[1].x+k; el[1].y=el[1].y+k; el[2].x=el[2].x+k; el[2].y=el[2].y+k; el[3].x=el[3].x+k; el[3].y=el[3].y+k; el[4].x=el[4].x+k; el[4].y=el[4].y+k; el[5].x=el[5].x+k; el[5].y=el[5].y+k; el[6].x=el[6].x+k; el[6].y=el[6].y+k; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){
Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a+k,b+k,c,d); bangun="ellips"; }}
R. Source Code Button Rotasi
void __fastcall TForm1::BitBtn13Click(TObject *Sender){ float sdt=(((StrToFloat(Edit2->Text))/180)*(22/7)); Elemen Tempel[4]; if(bangun=="kotak"){ int i; int tbox=el[5].x; int tboy=el[5].y; for(i=1; i<=4; i++){ el[i].x=el[i].x-tbox; el[i].y=el[i].y-tboy; Tempel[i].x=(el[i].x*cos(sdt)-el[i].y*sin(sdt)); Tempel[i].y=(el[i].x*sin(sdt)+el[i].y*cos(sdt)); el[i].x = Tempel[i].x; el[i].y = Tempel[i].y; el[i].x=el[i].x+tbox; el[i].y=el[i].y+tboy; } bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ int i; int tbox = el[4].x ; int tboy = el[4].y ; for(i=1; i<=3; i++){ el[i].x=el[i].x-tbox; el[i].y=el[i].y-tboy; Tempel[i].x=(el[i].x*cos(sdt)-el[i].y*sin(sdt)); Tempel[i].y=(el[i].x*sin(sdt)+el[i].y*cos(sdt)); el[i] = Tempel[i]; el[i].x=el[i].x+tbox; el[i].y=el[i].y+tboy; } bangun="segitiga"; FormShow(Sender); } if(bangun=="segilima"){ int i; int tbox=el[6].x; int tboy=el[6].y; for(i=1; i<=5; i++){ el[i].x=el[i].x-tbox; el[i].y=el[i].y-tboy; Tempel[i].x=(el[i].x*cos(sdt)-el[i].y*sin(sdt)); Tempel[i].y=(el[i].x*sin(sdt)+el[i].y*cos(sdt)); el[i].x = Tempel[i].x; el[i].y = Tempel[i].y; el[i].x=el[i].x+tbox; el[i].y=el[i].y+tboy;
} bangun="segilima"; FormShow(Sender); }}
S. Source Code Button Pencerminan Terhadap Sumbu X
void __fastcall TForm1::BitBtn17Click(TObject *Sender){ if(bangun=="kotak"){ el[1].x=el[1].x; el[1].y=el[1].y-(2*(el[1].y-((Image1->Height)/2))); el[2].x=el[2].x; el[2].y=el[2].y-(2*(el[2].y-((Image1->Height)/2))); el[3].x=el[3].x; el[3].y=el[3].y-(2*(el[3].y-((Image1->Height)/2))); el[4].x=el[4].x; el[4].y=el[4].y-(2*(el[4].y-((Image1->Height)/2))); el[5].x=el[5].x; el[5].y=el[5].y-(2*(el[5].y-((Image1->Height)/2))); bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x; el[1].y=el[1].y-(2*(el[1].y-((Image1->Height)/2))); el[2].x=el[2].x; el[2].y=el[2].y-(2*(el[2].y-((Image1->Height)/2))); el[3].x=el[3].x; el[3].y=el[3].y-(2*(el[3].y-((Image1->Height)/2))); el[4].x=el[4].x; el[4].y=el[4].y-(2*(el[4].y-((Image1->Height)/2))); bangun="segitiga"; FormShow(Sender); } if(bangun=="segilima"){ el[1].x=el[1].x; el[1].y=el[1].y-(2*(el[1].y-((Image1->Height)/2))); el[2].x=el[2].x; el[2].y=el[2].y-(2*(el[2].y-((Image1->Height)/2))); el[3].x=el[3].x; el[3].y=el[3].y-(2*(el[3].y-((Image1->Height)/2))); el[4].x=el[4].x; el[4].y=el[4].y-(2*(el[4].y-((Image1->Height)/2))); el[5].x=el[5].x; el[5].y=el[5].y-(2*(el[5].y-((Image1->Height)/2))); el[6].x=el[6].x; el[6].y=el[6].y-(2*(el[6].y-((Image1->Height)/2))); bangun="segilima"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a,(b-(2*(b-((Image1->Height)/2)))),c); bangun="lingkaran"; } if(bangun=="ellips"){
Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,(b-(2*(b-((Image1->Height)/2)))),c,d); bangun="ellips"; }}
T. Source Code Button Pencerminan Terhadap Sumbu Y
void __fastcall TForm1::BitBtn18Click(TObject *Sender){ if(bangun=="kotak"){ el[1].x=el[1].x-(2*(el[1].x-((Image1->Width)/2))); el[1].y=el[1].y; el[2].x=el[2].x-(2*(el[2].x-((Image1->Width)/2))); el[2].y=el[2].y; el[3].x=el[3].x-(2*(el[3].x-((Image1->Width)/2))); el[3].y=el[3].y; el[4].x=el[4].x-(2*(el[4].x-((Image1->Width)/2))); el[4].y=el[4].y; el[5].x=el[5].x-(2*(el[5].x-((Image1->Width)/2))); el[5].y=el[5].y; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ el[1].x=el[1].x-(2*(el[1].x-((Image1->Width)/2))); el[1].y=el[1].y; el[2].x=el[2].x-(2*(el[2].x-((Image1->Width)/2))); el[2].y=el[2].y; el[3].x=el[3].x-(2*(el[3].x-((Image1->Width)/2))); el[3].y=el[3].y; el[4].x=el[4].x-(2*(el[4].x-((Image1->Width)/2))); el[4].y=el[4].y; bangun="segitiga"; FormShow(Sender); } if(bangun=="segilima"){ el[1].x=el[1].x-(2*(el[1].x-((Image1->Width)/2))); el[1].y=el[1].y; el[2].x=el[2].x-(2*(el[2].x-((Image1->Width)/2))); el[2].y=el[2].y; el[3].x=el[3].x-(2*(el[3].x-((Image1->Width)/2))); el[3].y=el[3].y; el[4].x=el[4].x-(2*(el[4].x-((Image1->Width)/2))); el[4].y=el[4].y; el[5].x=el[5].x-(2*(el[5].x-((Image1->Width)/2))); el[5].y=el[5].y; el[6].x=el[6].x-(2*(el[6].x-((Image1->Width)/2))); el[6].y=el[6].y; bangun="seiglima"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint((a-(2*(a-((Image1->Width)/2)))),b,c); bangun="lingkaran"; } if(bangun=="ellips"){
Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint((a-(2*(a-((Image1->Width)/2)))),b,c,d); bangun="ellips"; }}
U. Source Code Button Pencerminan Terhadap X=Y
void __fastcall TForm1::BitBtn19Click(TObject *Sender){ if(bangun=="kotak"){ int a1=el[1].x; int a2=el[2].x; int a3=el[3].x; int a4=el[4].x; int a5=el[5].x; int b1=el[1].y; int b2=el[2].y; int b3=el[3].y; int b4=el[4].y; int b5=el[5].y; el[1].x=b1; el[1].y=a1; el[2].x=b2; el[2].y=a2; el[3].x=b3; el[3].y=a3; el[4].x=b4; el[4].y=a4; el[5].x=b5; el[5].y=a5; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ int a1=el[1].x; int a2=el[2].x; int a3=el[3].x; int a4=el[4].x; int b1=el[1].y; int b2=el[2].y; int b3=el[3].y; int b4=el[4].y; el[1].x=b1; el[1].y=a1; el[2].x=b2; el[2].y=a2; el[3].x=b3; el[3].y=a3; el[4].x=b4; el[4].y=a4; bangun="segitiga"; FormShow(Sender); } if(bangun=="segilima"){ int a1=el[1].x; int a2=el[2].x; int a3=el[3].x; int a4=el[4].x; int a5=el[5].x; int a6=el[6].x; int b1=el[1].y; int b2=el[2].y; int b3=el[3].y; int b4=el[4].y; int b5=el[5].y; int b6=el[6].y;
el[1].x=b1; el[1].y=a1; el[2].x=b2; el[2].y=a2; el[3].x=b3; el[3].y=a3; el[4].x=b4; el[4].y=a4; el[5].x=b5; el[5].y=a5; el[6].x=b6; el[6].y=a6; bangun="segilima"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(b,a,c); bangun="lingkaran"; } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(b,a,d,c); bangun="lingkaran"; }}
V. Source Code Button Pencerminan Zoom In
void __fastcall TForm1::BitBtn16Click(TObject *Sender){ int z = 2; if(bangun=="kotak"){ int tbox = el[5].x; int tboy = el[5].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; el[4].x = tbox+(el[4].x-tbox)*z; el[4].y = tboy+(el[4].y-tboy)*z; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ int tbox = el[4].x; int tboy = el[4].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a,b,c*z); bangun="lingkaran"; } if(bangun=="segilima"){ int tbox = el[6].x; int tboy = el[6].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; el[4].x = tbox+(el[4].x-tbox)*z; el[4].y = tboy+(el[4].y-tboy)*z; el[5].x = tbox+(el[5].x-tbox)*z; el[5].y = tboy+(el[5].y-tboy)*z; bangun="segilima"; FormShow(Sender);
} if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,b,c*z,d*z); bangun="ellips"; }}
W. Source Code Button Pencerminan Zoon Out
void __fastcall TForm1::BitBtn15Click(TObject *Sender){ float z = 0.5; if(bangun=="kotak"){ int tbox = el[5].x; int tboy = el[5].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; el[4].x = tbox+(el[4].x-tbox)*z; el[4].y = tboy+(el[4].y-tboy)*z; bangun="kotak"; FormShow(Sender); } if(bangun=="segitiga"){ int tbox = el[4].x; int tboy = el[4].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; bangun="segitiga"; FormShow(Sender); } if(bangun=="lingkaran"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); CircleMidPoint(a,b,c*z); bangun="lingkaran"; } if(bangun=="segilima"){ int tbox = el[6].x; int tboy = el[6].y; el[1].x = tbox+(el[1].x-tbox)*z; el[1].y = tboy+(el[1].y-tboy)*z; el[2].x = tbox+(el[2].x-tbox)*z; el[2].y = tboy+(el[2].y-tboy)*z; el[3].x = tbox+(el[3].x-tbox)*z; el[3].y = tboy+(el[3].y-tboy)*z; el[4].x = tbox+(el[4].x-tbox)*z; el[4].y = tboy+(el[4].y-tboy)*z; el[5].x = tbox+(el[5].x-tbox)*z; el[5].y = tboy+(el[5].y-tboy)*z; bangun="segilima"; FormShow(Sender); } if(bangun=="ellips"){ Image1->Canvas->Rectangle(0,0,Image1->Width,Image1->Height); EllipsMidPoint(a,b,c*z,d*z); bangun="ellips"; }}
BAB IV
IMPLEMENTASI
Tampilan Awal
Jika Icon Lingkaran di klik maka Gambar Lingkaran akan terbentuk
Jika Icon Segitiga di klik maka Gambar Segitiga akan terbentuk
Jika Icon Kotak di klik maka Gambar Kotak akan terbentuk
Jika Icon SegiLima di klik maka Gambar SegiLima akan terbentuk
Jika Icon Elips di klik maka Gambar Elips akan terbentuk
Proses Zoom Segitiga
Sebelum Sesudah
Proses Pewarnaan Objek
Sebelum Sesudah
Proses Translasi Objek Ke arah Kanan AtasSebelum Sesudah
Proses Rotasi 90o Sebelum Sesudah
Proses Pencerminan Terhadap Y=X
Sebelum Sesudah
BAB V
KESIMPULAN
Kami telah membuat tugas grafika computer dengan menggunakan konsep
perhitungan matematika dan penggabungan logika dengan algoritma dapat membuat dan
memberi variasi objek berupa pewarnaan, rotasi, pencerminan, zooming dan
translasi/perpindahan. Kami juga telah membuat beberapa gambar objek 2D dengan
menggunakan aplikasi C++ Builder.
VI
DAFTAR PUSTAKA
Sofyan,Herry., Materi pembelajaran grafika computer, Yogyakarta, 2010.