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ntu-kpi.comp.programming

[help] cÌÏÖÅÎÉÅ ×ÅËÔÏÒÏ×

Delimer

5/6/2005 4:50:00 PM

ðÒÉ×ÅÔ,
ËÁË ÍÏÖÎÏ ÓÌÏÖÉÔØ Ä×Á ×ÅËÔÏÒÁ ÐÒÅÄÓÔÁ×ÌÅÎÙÈ × ÅËÓÐÏÎÅÃÉÁÌØÎÏÊ ÆÏÒÍÅ (ÅÓÔØ
ÄÌÉÎÎÁ ×ÅËÔÏÒÁ É ÕÇÏÌ ÏÔÎÏÓÉÔÅÌØÎÏ ÎÁÞÁÌÁ ËÏÏÒÄÉÎÁÔ).
ñ ÐÒÉÄÕÍÁÌ ÔÁËÏÊ ÓÐÏÓÏÂ:
Ä×Á ×ÅËÔÏÒÁ (a1,w1),(a2,w2)
(a,w)=(a1,w1)+(a2,w2) ÇÄÅ
a=sqroot((a1*cos w1 + a2*cos w2)^2+(a1*sin w1 + a2*sin w2)^2)
w=arccos((a1*cos w1 + a2*cos w2)/(a))
íÏÖÅÔ ÅÓÔØ ÓÐÏÓÏ ÐÏ-ÐÒÏÝÅ?
óÅÎËÓ
--
[ AÒocalyÒ. sys É ÄÏÐÏÌÎÅÎÉÅ Ë ÎÅÍÕ armag_add-on. ]
ûÔÉÎÏ× áÎÔÏÎ. (c)2005 LABA


1 Answer

AxA

5/6/2005 5:40:00 PM

0


"Delimer" <destroyer@its.ntu-kpi.kiev.ua> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ
ÓÌÅÄÕÀÝÅÅ: news:d5g77j$q8p$1@news.ntu-kpi.kiev.ua...
> ðÒÉ×ÅÔ,
> ËÁË ÍÏÖÎÏ ÓÌÏÖÉÔØ Ä×Á ×ÅËÔÏÒÁ ÐÒÅÄÓÔÁ×ÌÅÎÙÈ × ÅËÓÐÏÎÅÃÉÁÌØÎÏÊ ÆÏÒÍÅ
(ÅÓÔØ
> ÄÌÉÎÎÁ ×ÅËÔÏÒÁ É ÕÇÏÌ ÏÔÎÏÓÉÔÅÌØÎÏ ÎÁÞÁÌÁ ËÏÏÒÄÉÎÁÔ).
> ñ ÐÒÉÄÕÍÁÌ ÔÁËÏÊ ÓÐÏÓÏÂ:
)> Ä×Á ×ÅËÔÏÒÁ (a1,w1),(a2,w2)
> (a,w)=(a1,w1)+(a2,w2) ÇÄÅ
> a=sqroot((a1*cos w1 + a2*cos w2)^2+(a1*sin w1 + a2*sin w2)^2)
> w=arccos((a1*cos w1 + a2*cos w2)/(a))
> íÏÖÅÔ ÅÓÔØ ÓÐÏÓÏ ÐÏ-ÐÒÏÝÅ?
> óÅÎËÓ
> --
> [ AÒocalyÒ. sys É ÄÏÐÏÌÎÅÎÉÅ Ë ÎÅÍÕ armag_add-on. ]
> ûÔÉÎÏ× áÎÔÏÎ. (c)2005 LABA

double x1, x2, y1, y2;
double x, y;

x1 = a1*cos(w1);
y1 = a1*sin(w1);
x2 = a2*cos(w2);
y2 = a2*sin(w2);

x = x1+x2;
y = y1+y2;

double a = sqrt(x*x+y*y);
double w = atan2(y, x);

ÔÅ ÓÁÍÅ ÝÏ × ÔÅÂÅ ×ÉÊÛÌÏ ÐÒÏÓÔÏ ÍÅÎÛÅ ÏÐÅÒÁæÊ. ÚÁÀÚÁ× atan2 - ÔÕÔ ÎÅ
×ÉÎÉËÁ¤ ÎÅÏÄÎÏÚÎÁÞÎÏÓÔ¦ צΠÐÏ×ÅÒÔÁ¤ ×¦Ä -Ð ÄÏ Ð. Á Ú ÁÒËÏÓ. ÔϦ ÐÏÔÒ¦ÂÎÏ
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¦ÎÛÏÇÏ ÎÅ ÂÁÞÉ×.