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Index › Programming Questions & Help › Syntax Questions › newb shiffman book question
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newb shiffman book question (Read 391 times)
BAAB
newb shiffman book question
Feb 22nd, 2009, 8:05pm  
in shiffman's book, learning processing

http://books.google.com/books?id=yrR1YoiM2EAC&pg=PA274&lpg=PA274&dq=shiffman+exercise+15-12+triangles&source=bl&ots=8bS7JkvLh2&sig=r3Uen9HDSshLh6bcNWdgbqkXrO0&hl=en&ei=8J-hScmKA4mMsAP235HFCQ&sa=X&oi=book_result&resnum=10&ct=result

there is an exercise not covered on the site (15-12)

i understand sampling pixels color values, and this example would be a piece of cake with squares or overlapping shapes

i am just stuck how to make triangles pattern out alternating up and then down.

in the library it seems like the triangle primitive needs 3 sets of coordinates
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koogy
Re: newb shiffman book question
Reply #1 - Feb 23rd, 2009, 3:45pm  
> in the library it seems like the triangle primitive needs 3 sets of coordinates

is that really surprising? 8)

i'd write a method that drew an equilateral triangle of a given size and colour at the passed-in centre co-ordinate and then it's just a case of rotate(PI) before every other call to flip it on its head.

(your centres will have to be spaced differently in the x and y axis i think (am guessing .866 will play a role here))
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BAAB
Re: newb shiffman book question
Reply #2 - Feb 23rd, 2009, 9:25pm  
thanks

i need to strengthen the muscle that breaks things down into classes and methods!

will see how it goes.  that helps a lot though
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