Re-Scaling to Meters

[Oberoten]

Very quick Script :


To put the measurements to one grid-square = 1 meter AND get areas instead of sides of area effects with the results rounded to 1 decimal do the following :


In imagewindow_image.lua

Replace the whole
function onMeasureVector(token, vector)
.....
end

with



function onMeasureVector(token, vector)
if hasGrid() then
local diagonals = 0;
local straights = 0;
local gridsize = getGridSize();

for i = 1, #vector do
local gx = math.abs(math.floor(vector[i].x / gridsize));
local gy = math.abs(math.floor(vector[i].y / gridsize));

if gx > gy then
diagonals = diagonals + gy;
straights = straights + gx - gy;
else
diagonals = diagonals + gx;
straights = straights + gy - gx;
end
end

local squares = diagonals * 1.5 + straights;
local feet = squares * 1;
return math.floor( (feet * 10^1) + 0.5) / (10^1) .. "\ Meters";
else
return "";
end
end


Also replace :

function onMeasurePointer(length)
.....
end

with



function onMeasurePointer(length)
if hasGrid() then

return math.floor( ((((length / getGridSize() * 1) * 10^1) + 0.5) / (10^1))^2) .. "\ Meter(s)";
else
return "";
end
end



If you wish to change the number of decimals just change the blue numbers to the number of decimals desired.

[Oberoten]

Oh typical... NOW the rounding is broken.

[Oberoten]

Corrected code reads :

Also... Hmm... What borked it seemed to be the fact that i tried to calculate area rather than side of squares and cones.

Anyone wanna give me a hint on how to do this properly?




function onMeasureVector(token, vector)
if hasGrid() then
local diagonals = 0;
local straights = 0;
local gridsize = getGridSize();

for i = 1, #vector do
local gx = math.abs(math.floor(vector[i].x / gridsize));
local gy = math.abs(math.floor(vector[i].y / gridsize));

if gx > gy then
diagonals = diagonals + gy;
straights = straights + gx - gy;
else
diagonals = diagonals + gx;
straights = straights + gy - gx;
end
end

local squares = diagonals * 1.5 + straights;
local meters = squares * 1;
return meters .. "\ Meters";
else
return "";
end
end
function onMeasurePointer(length)
if hasGrid() then

local rounded = math.floor( ( (length / getGridSize() * 1) * 10^2) + 0.5) / (10^2)
return rounded .. "\ Meter(s)";
else
return "";
end
end

[Foen]

I'll give it a go and post back later.

BTW, I think there is a potential problem with the quoted string "\ Meter(s)", which should probably read " Meter(s)". Or even " Metre(s)" if you are a stickler for SI spelling *grin*

The backslash character is an escape character and is probably left over from having \' where it means a real apostrophe rather than the end of a single-quoted string.

Stuart

[Foen]

Hi Oberoten

Hopefully this should do the trick:



local unitname = "\'";
local multiple = 5;
local decimals = 0;

function round(value, dp)
local result = value * (10^dp);
result = math.floor(result + 0.5);
return result / (10^dp);
end

function onMeasureVector(token, vector)
if hasGrid() then
local diagonals = 0;
local straights = 0;
local gridsize = getGridSize();

for i = 1, #vector do
local gx = math.abs(math.floor(vector[i].x / gridsize));
local gy = math.abs(math.floor(vector[i].y / gridsize));

if gx > gy then
diagonals = diagonals + gy;
straights = straights + gx - gy;
else
diagonals = diagonals + gx;
straights = straights + gy - gx;
end
end

local squares = math.floor(diagonals * 1.5) + straights;
local units = squares * multiple;

return units .. unitname;
else
return "";
end
end

function onMeasurePointer(length)
if hasGrid() then
return round(length / getGridSize() * multiple, decimals) .. unitname;
else
return "";
end
end


The units, multiples (number of units per square) and decimal places are now more easily changed.

For your requirements, I suggest:



local unitname = "m"; --[[ or " Meter(s)" ]]
local multiple = 1;
local decimals = 1;


Hope that helps

Stuart

[Oberoten]

It allready worked with the meter-scaling. What I was thinking about was if there was a way to change how it measure the rectangles per example so you get the number of units covered instead of just the range from the middle to the edge.

[Foen]

Sorry Oberoten, I misunderstood your request.

Unfortunately it doesn't seem you can infer the context of a call to onMeasurePointer (the reference is here (https://www.fantasygrounds.com/refdoc/imagecontrol.xcp)) and there doesn't seem to be any other events exposed that would allow you to do it.

Stuart

[Oberoten]

Don't sorry me. :) Willingness to help is always aprechiated.

- Obe