hm... Nf6?!

as I understand this problem, you have 3 points which are moving with constant speed and now you want to figure out, when they are collinear. Lets say, the points are starting in the vectors a0, b0 and c0 and move along the vectors a b and c so that after time t they are at:

a0+t*a, b0+t*b and c0+t*c

To test for collinearity you can check if the vectors

v1 = b0+t*b - a0+t*a

and

v2 = c0+t*c - a0+t*a

are multiples, so there is a k with v1*k = v2. Now you have these two equations:

(b0_x + t*b_x - a0_x + t*a_x) * k = c0_x+t*c_x - a0_x+t*a_x
(b0_y + t*b_y - a0_y + t*a_y) * k = c0_y+t*c_y - a0_y+t*a_y

which lead to:

(b0_x + t*b_x - a0_x + t*a_x) * (c0_y+t*c_y - a0_y+t*a_y) = (c0_x+t*c_x - a0_x+t*a_x) * (b0_y + t*b_y - a0_y + t*a_y)

This is a equation of 2. degree, but the terms are becoming huge, I hope if you could follow me up to this point, you are able to solve it.

EDIT: Okay, I  assumed linearity here but anything else would be far more complex.

well, where is a trick to run any addin in the emulator of the sdk, you can add the addin in the SD-card memory folder and copy it while running another addin from SD-card to flash memory (via System-Menu). Then it can be easily executed in the Main-Memory.

these there, iirc, for the even older modells (CFX) and could be compared to g1m in function (they store Programs, Pictures, Lists and so on), but on this i'm not sure...

EDIT: also these are not readable from the fx9860G(II) itself, but can be opened from the transferprogram (FA-124)

After some experiments i wrote a short bash script for converting an avi file to a cuv file (for the video player). It doesn't have audio support and the used dither is not the best one can think of. It uses ffmpeg, image-magick and bc.

In my tests (in the SDK) the audio (played from the original video) gets asynchron, so the framerate is probably wrong

* converts Wall-E for viewing it in his Math lessons...

#!/bin/sh
[ -z ${1} ] && echo "Usage: $(basename $0) <filename>" && exit||filename=${1}
duration="$(ffmpeg -i $filename 2>&1 | grep "Duration" | cut -d ' ' -f 4 | sed s/,// | cat)";
seconds="$(echo $duration | awk -F: '{ print ($1 * 3600) + ($2 * 60) + $3 }' | sed 's/[,]/./')";
framerate=40;
framesd="$(echo "$framerate*$seconds" | bc)";
frames=${framesd%.*}
for i in $(seq 0 $frames);
do time="$(echo "
scale = 3;
result = $i/$framerate;
if (0 < result && result < 1) {
print "0"
}
print result;
" | bc)";
echo $time;
ffmpeg -vframes 1 -ss $time -i $filename -f image2 pipe: | convert - -resize 128x64\! -ordered-dither o3x3  pbm:- | sed '1,3d' | cat >> demo.cuv;
done;