Re: [PD] rotating coordinate system

Frank Barknecht Wed, 08 Jul 2009 01:20:08 -0700

Hallo,
Achim Bornhoeft hat gesagt: // Achim Bornhoeft wrote:

> I tried this but without the results I expected.
> Probably it was not very clear how I explained it.
> See attached patch for a better description of what I am looking for.


Attached is a version which should do what you expect. I think you were just
missing the correct translations of the center of rotation: It usually is the
point (0,0), so if you want to rotate around a different center, like (50, 50)
in your example, you first need to translate everything to (0,0). This is done
in the [pd scale] and [pd unscale] subpatches by adding rsp. substracting 50.

Ciao
-- 
Frank

#N canvas 363 170 742 378 10;
#X obj 94 180 hsl 100 15 0 100 0 0 empty empty empty -2 -8 0 10 -262144
-1 -1 6700 1;
#X obj 75 78 vsl 15 100 0 100 0 0 empty empty empty 0 -9 0 10 -262144
-1 -1 7200 1;
#X obj 91 80 grid grid1 100 0 100 100 0 100 0 1 1 10 10 158.677 107.273
;
#X obj 235 81 grid grid1 100 0 100 100 0 100 0 1 1 10 10 307.727 148.677
;
#X text 199 126 --->;
#X obj 382 81 grid grid1 100 0 100 100 0 100 0 1 1 10 10 414.323 153.727
;
#X text 342 125 --->;
#X obj 537 82 grid grid1 100 0 100 100 0 100 0 1 1 10 10 564.273 114.323
;
#X text 494 126 --->;
#N canvas 412 34 532 334 calc 0;
#X obj 181 -13 inlet y;
#X obj 286 -12 inlet x;
#X obj 66 225 s 0-deg;
#X obj 429 228 s 270-deg;
#X obj 298 229 s 180-deg;
#X obj 166 227 s 90-deg;
#X obj 86 141 t b f;
#X obj 67 169 pack f f;
#X msg 66 197 values \$2 \$1;
#X obj 165 169 pack f f;
#X obj 180 94 t b f;
#X obj 209 143 abs;
#X obj 208 120 - 100;
#X msg 166 201 values \$1 \$2;
#X obj 300 173 pack f f;
#X obj 268 121 abs;
#X obj 267 98 - 100;
#X obj 325 100 t b f;
#X obj 353 145 abs;
#X obj 352 122 - 100;
#X msg 297 203 values \$2 \$1;
#X msg 428 198 values \$1 \$2;
#X obj 425 175 pack f f;
#X obj 415 123 abs;
#X obj 414 100 - 100;
#X obj 463 101 t b f;
#X connect 0 0 7 0;
#X connect 0 0 9 0;
#X connect 0 0 16 0;
#X connect 0 0 24 0;
#X connect 1 0 6 0;
#X connect 1 0 10 0;
#X connect 1 0 17 0;
#X connect 1 0 25 0;
#X connect 6 0 7 0;
#X connect 6 1 7 1;
#X connect 7 0 8 0;
#X connect 8 0 2 0;
#X connect 9 0 13 0;
#X connect 10 0 9 0;
#X connect 10 1 12 0;
#X connect 11 0 9 1;
#X connect 12 0 11 0;
#X connect 13 0 5 0;
#X connect 14 0 20 0;
#X connect 15 0 14 0;
#X connect 16 0 15 0;
#X connect 17 0 14 0;
#X connect 17 1 19 0;
#X connect 18 0 14 1;
#X connect 19 0 18 0;
#X connect 20 0 4 0;
#X connect 21 0 3 0;
#X connect 22 0 21 0;
#X connect 23 0 22 0;
#X connect 24 0 23 0;
#X connect 25 0 22 0;
#X connect 25 1 22 1;
#X restore 75 250 pd calc;
#X obj 92 54 r 0-deg;
#X obj 538 59 r 270-deg;
#X obj 383 57 r 180-deg;
#X floatatom 33 129 5 0 0 0 - - -;
#X floatatom 124 204 5 0 0 0 - - -;
#X floatatom 234 195 5 0 0 0 - - -;
#X floatatom 328 195 5 0 0 0 - - -;
#X floatatom 383 194 5 0 0 0 - - -;
#X floatatom 475 194 5 0 0 0 - - -;
#X floatatom 536 193 6 0 0 0 - - -;
#X floatatom 629 192 5 0 0 0 - - -;
#X text 130 244 inside is what I like to achieve with a formula. The
formula is needed to be used in abstractions with variables.;
#N canvas 0 22 780 543 Franks 0;
#X text 213 57 ->;
#X text 276 57 ->;
#X obj 51 168 cart2pol;
#X obj 74 280 +;
#X obj 73 199 t f b;
#X obj 50 314 pol2cart;
#X floatatom 50 363 5 0 0 0 - - -;
#X floatatom 72 341 8 0 0 0 - - -;
#X obj 51 141 unpack;
#X floatatom 109 280 5 0 0 0 - - -;
#X msg 52 58 0 0;
#X msg 102 58 0 100;
#X msg 160 58 100 100;
#X msg 236 58 100 0;
#X text 81 57 ->;
#X text 139 57 ->;
#X msg 299 58 0 0;
#X text 51 36 expect the following message as result below;
#X obj 33 442 pack 0 0;
#X obj 197 116 r 0-deg;
#X obj 197 139 route values;
#X msg 35 467 values \$1 \$2;
#N canvas 67 157 450 300 scale 0;
#X obj 83 47 inlet;
#X obj 89 117 outlet;
#X obj 160 45 inlet;
#X obj 166 115 outlet;
#X obj 162 81 + 50;
#X obj 85 83 + 50;
#X connect 0 0 5 0;
#X connect 2 0 4 0;
#X connect 4 0 3 0;
#X connect 5 0 1 0;
#X restore 33 402 pd scale;
#X floatatom 106 426 5 0 0 0 - - -;
#X obj 181 223 t b f;
#X obj 100 252 expr $f2*$f1/180;
#X floatatom 343 128 5 0 0 1 rotation - -;
#N canvas 67 157 450 300 unscale 0;
#X obj 85 35 inlet;
#X obj 81 156 outlet;
#X obj 85 83 - 50;
#X obj 162 81 - 50;
#X obj 86 59 unpack 0 0;
#X obj 88 127 pack 0 0;
#X connect 0 0 4 0;
#X connect 2 0 5 0;
#X connect 3 0 5 1;
#X connect 4 0 2 0;
#X connect 4 1 3 0;
#X connect 5 0 1 0;
#X restore 196 163 pd unscale;
#X msg 96 227 3.14159;
#X obj 379 193 grid grid1 100 0 100 100 0 100 0 1 1 10 10 439.26 216.098
;
#X floatatom 378 307 5 0 0 0 - - -;
#X floatatom 472 307 5 0 0 0 - - -;
#X obj 380 169 r anydeg;
#X obj 36 496 s anydeg;
#X connect 2 0 5 0;
#X connect 2 1 4 0;
#X connect 3 0 5 1;
#X connect 4 0 3 0;
#X connect 4 1 28 0;
#X connect 5 0 6 0;
#X connect 5 0 22 0;
#X connect 5 1 7 0;
#X connect 5 1 22 1;
#X connect 8 0 2 0;
#X connect 8 1 2 1;
#X connect 10 0 8 0;
#X connect 11 0 8 0;
#X connect 12 0 8 0;
#X connect 13 0 8 0;
#X connect 16 0 8 0;
#X connect 18 0 21 0;
#X connect 19 0 20 0;
#X connect 20 0 27 0;
#X connect 21 0 33 0;
#X connect 22 0 18 0;
#X connect 22 1 18 1;
#X connect 22 1 23 0;
#X connect 24 0 2 0;
#X connect 24 1 25 1;
#X connect 25 0 3 1;
#X connect 25 0 9 0;
#X connect 26 0 24 0;
#X connect 27 0 8 0;
#X connect 28 0 25 0;
#X connect 29 0 30 0;
#X connect 29 1 31 0;
#X connect 32 0 29 0;
#X restore 86 23 pd Franks suggestion;
#X obj 236 57 r 90-deg;
#X connect 0 0 9 1;
#X connect 0 0 14 0;
#X connect 1 0 9 0;
#X connect 1 0 13 0;
#X connect 3 0 15 0;
#X connect 3 1 16 0;
#X connect 5 0 17 0;
#X connect 5 1 18 0;
#X connect 7 0 19 0;
#X connect 7 1 20 0;
#X connect 10 0 2 0;
#X connect 11 0 7 0;
#X connect 12 0 5 0;
#X connect 23 0 3 0;

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Re: [PD] rotating coordinate system

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