DIketahui : garis (15,71) - (114,210)
Ditanyakan: hitung lokasi 7 titik pertama yang dilewati garis
Jawab
dx = x2 – x1 = 114 – 15 = 99
dy = y2 – y1 = 210 – 71 = 139
dx < dy, maka:
d1 = 2 x dy = 2 x 139 = 278
d2 = 2 x (dy - dx) = 2 x 40 = 80
e = d1 – dy = 278 – 139 = 139
titik ke-1 x = x1 = 15 , y = y1 = 71
e = 139 , 139 > 0 , maka:
e = e + d2 = 139 + 80 = 219
titik ke-2 x = x + 1 = 15 + 1 = 16 , y = y + 1 = 71 + 1 = 72
e = 219, 219 > 0 , maka:
e = e + d2 = 219 + 80 = 299
titik ke-3 x = 16 + 1 = 17, y = 72 + 1 = 73
e = 299, 299 > 0, maka:
e = 299 + 80 = 379
titik ke-4 x = 17 + 1 = 18, y = 73 + 1 = 74
e = 379, 379 > 0, maka:
e = 379 + 80 = 459
titik ke-5 x = 18 + 1 = 19, y = 74 + 1 = 75
e = 459, 459 > 0, maka:
e = 459 + 80 = 539
titik ke-6 x = 19 + 1 = 20, y = 75 + 1 = 76
e = 539, 539 > 0, maka:
e = 539 + 80 = 619
titik ke-7 x = 20 + 1 = 21, y = 76 + 1 = 77
e = 619, 619 > 0, maka:
e = 619 + 80 = 699
titik ke-8 x = 21 + 1 = 22, y = 77 + 1 = 78
Wandi Wanafhati 208700954
Susi Susilawati 208700940
Yuli Susanti 208700963
Yuli Herlinawati 208700952
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