#N canvas 199 230 586 375 12;
#X msg 120 148 gemList;
#X msg 120 272 gemList;
#X text 169 16 part of GEM;
#X obj 120 187 pix_coloralpha;
#X text 176 43 [pix_coloralpha];
#X text 151 73 calculate the Alpha-channel from the RGB-data;
#X text 21 314 [pix_coloralpha] will set the alpha-channel to be the
mean-value of the RGB-triple for each pixel.;
#X connect 0 0 3 0;
#X connect 3 0 1 0;
