#N canvas 6 61 626 372 10;
#X declare -lib Gem;
#X text 452 8 GEM object;
#X obj 8 275 cnv 15 430 80 empty empty empty 20 12 0 14 #e0e0e0 #404040 0;
#X text 39 278 Inlets:;
#X text 38 325 Outlets:;
#X obj 8 236 cnv 15 430 30 empty empty empty 20 12 0 14 #bcbcbc #404040 0;
#X text 17 235 Arguments:;
#X obj 7 60 cnv 15 430 170 empty empty empty 20 12 0 14 #e0e0e0 #404040 0;
#X obj 449 77 cnv 15 170 250 empty empty empty 20 12 0 14 #dce4fc #404040 0;
#X text 453 60 Example:;
#X obj 514 254 cnv 15 100 60 empty empty empty 20 12 0 14 #bcbcbc #404040 0;
#X obj 450 167 cnv 15 160 80 empty empty empty 20 12 0 14 #14e814 #404040 0;
#X obj 451 84 gemhead;
#X text 71 31 Class: pix object;
#X obj 510 85 bng 15 250 50 0 empty empty pix_load 20 8 0 8 #fcfcfc #000000 #000000;
#N canvas 0 0 587 366 image 0;
#X obj 77 48 inlet;
#X obj 77 344 outlet;
#X obj 77 205 pix_image examples/data/fractal.JPG;
#X obj 223 55 inlet;
#X msg 223 123 open \$1;
#X obj 223 100 openpanel;
#X connect 0 0 2 0;
#X connect 2 0 1 0;
#X connect 3 0 5 0;
#X connect 4 0 2 0;
#X connect 5 0 4 0;
#X restore 451 113 pd image;
#X text 63 246 <alpha-threshold>;
#X text 56 338 Outlet 1: gemlist;
#X text 63 292 Inlet 1: gemlist;
#X obj 451 263 _pix2rectangle 3;
#X text 516 105 open an image;
#X text 50 12 Synopsis: [pix_a_2grey];
#X text 29 66 Description: convert a pixel to greyscale based on alpha;
#X text 39 87 Assuming that you have an image in the gemList (for instance \, loaded in with pix_image) \, pix_a_2grey will convert the image into a greyscale.;
#X text 39 129 If alphaVal > 0 \, then it will convert to greyscale where ever the pixel alpha is greater than the alphaVal.;
#X text 38 189 If alphaVal = 0 \, then nothing happens.;
#X text 38 159 If alphaVal < 0 \, then it will convert to greyscale where ever the pixel alpha is less than the -alphaVal.;
#X text 22 210 Obviously \, this will work for RGBA-images only.;
#X obj 451 226 pix_a_2grey;
#X floatatom 523 206 4 -1 1 2 alpha-thresh - - 0;
#X text 63 305 Inlet 2: <float>: alpha-threshold (-1..0..+1);
#X text 512 118 (TIFF \, ..);
#X msg 523 171 0.5;
#X msg 479 170 -0.5;
#X obj 451 137 pix_coloralpha;
#N canvas 484 243 450 300 META 0;
#X obj 10 25 declare -lib Gem;
#X text 10 45 DESCRIPTION convert a pixel to greyscale based on alpha;
#X text 10 65 KEYWORDS Gem pix image;
#X text 20 85 INLET_0 gemlist;
#X text 20 105 INLET_1 float;
#X text 20 125 OUTLET_0 gemlist;
#X text 10 145 AUTHOR IOhannes m zmölnig;
#X text 10 165 LICENSE GPL v2;
#X restore 518 8 pd META;
#X obj 518 259 _gemwin;
#X connect 11 0 14 0;
#X connect 13 0 14 1;
#X connect 14 0 33 0;
#X connect 27 0 18 0;
#X connect 28 0 27 1;
#X connect 31 0 28 0;
#X connect 32 0 28 0;
#X connect 33 0 27 0;
