if-term problem

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if-term problem #253891 02/27/09 15:02 02/27/09 15:02
Joined: Nov 2008 Posts: 354 saeculum II MPQ OP Senior Member
MPQ OP Senior Member Joined: Nov 2008 Posts: 354 saeculum II	Hello, I want to use an if-term where I compare a vector: how do I do this? I have already tried out: VECTOR* vector1; if (vector1.x < 1) ... but it does not work! new project in early stage... Intel Xeon X3450 2,66GHz \| Mushkin 8 Gib \| Zotac GTS250 + 7300LE \| A8.3 com

Re: if-term problem [Re: MPQ] #253892 02/27/09 15:06 02/27/09 15:06
Joined: Aug 2003 Posts: 7,440 Red Dwarf Michael_Schwarz Senior Expert
Michael_Schwarz Senior Expert Joined: Aug 2003 Posts: 7,440 Red Dwarf	vector1[0] "Sometimes JCL reminds me of Notch, but more competent" ~ Kiyaku

Re: if-term problem [Re: Michael_Schwarz] #253893 02/27/09 15:13 02/27/09 15:13
Joined: Dec 2008 Posts: 271 Saturnus Member
Saturnus Member Joined: Dec 2008 Posts: 271	If you want to compare to the magnitude of a vector you can use vec_length. And if vector1 is a local vector, you can omit the asterik (*) in its declaration.

Re: if-term problem [Re: Saturnus] #253907 02/27/09 16:06 02/27/09 16:06
Joined: Jan 2009 Posts: 86 Brasil - RS D DiegoFloor Junior Member
DiegoFloor Junior Member D Joined: Jan 2009 Posts: 86 Brasil - RS	Complementing the Kombucha's answer, what exactly do you want to compare? What you did there works, but it's only comparing the x component of vector1.

Re: if-term problem [Re: DiegoFloor] #253911 02/27/09 17:28 02/27/09 17:28
Joined: Nov 2008 Posts: 354 saeculum II MPQ OP Senior Member
MPQ OP Senior Member Joined: Nov 2008 Posts: 354 saeculum II	yeah, I only want to use the x-component of the term like: if the x-value of the vector is under 10, do sth. (thats waht i want ;)) vec_length is not what i need because I only want to get the x-value of the vector and not the whole xyz-vector Last edited by MPQ; 02/27/09 17:35. new project in early stage... Intel Xeon X3450 2,66GHz \| Mushkin 8 Gib \| Zotac GTS250 + 7300LE \| A8.3 com

Re: if-term problem [Re: MPQ] #253960 02/27/09 23:52 02/27/09 23:52
Joined: Aug 2003 Posts: 7,440 Red Dwarf Michael_Schwarz Senior Expert
Michael_Schwarz Senior Expert Joined: Aug 2003 Posts: 7,440 Red Dwarf	I'll clarify more: use vector1[0] instead of vector1.x "Sometimes JCL reminds me of Notch, but more competent" ~ Kiyaku

Re: if-term problem [Re: Michael_Schwarz] #253967 02/28/09 01:02 02/28/09 01:02
Joined: Feb 2008 Posts: 3,232 Australia EvilSOB Expert
EvilSOB Expert Joined: Feb 2008 Posts: 3,232 Australia	AND as long as the vector is being correctly declares and initialised, [b]if (vector1.x < 1)[.b] should work fine for just testing the X portion. To clarify the defining, Code: VECTOR* vector1 = { x=0; y=0; z=0; } //if OUTSIDE a function (global variable/vector) VECTOR vector1; //needs both these lines in this order vec_zero(vector1); // if inside a function(local variable/vector) "There is no fate but what WE make." - CEO Cyberdyne Systems Corp. A8.30.5 Commercial