2015-08-14, 10:28
Does anyone know of any heightmap to LDraw brick converters? I know MLCad can create fractal terrain, but I could have sworn someone had written a converter at some point. Thanks.
2015-08-14, 10:28
2015-08-14, 16:13
2015-08-15, 5:21
2018-06-18, 9:49
2018-06-18, 13:40
2018-06-18, 20:14
(2018-06-18, 13:40)Gerald Lasser Wrote: [ -> ](2015-08-15, 5:21)Michael Horvath Wrote: [ -> ]Thanks! But, there seems to be a limit on the "max size" a model can be. Not sure how to get around that.What area (in studs/baseplates) are you talking about?
Do you want to import a greyscale image that represents a height map?
My project is based on x and z coordinates of dots in a grid that have a certain height.
The source would be an excel file.
What I am looking for is a way to translate that, using 1x1 plates and bricks laying out a mosaic like "terrain".
What I can make now is this:
A dot at point x,z at height 1 translates to a 1x1 plate
A dot at height 2 translates to two stacked 1x1 plates
A dot at height 3 translates to a 1x1 brick
The next step I want to make is to be able to calculate the stack at any height.
So a dot at height 4 is a brick and one plate stacked
A dot at height 5 is a brick and two plates stacked
Height 6 is 2 bricks
Height 7 is 2 bricks and one plate
And so forth.
No idea so far how to do that.
Any thoughts.
2018-06-18, 20:56
(2018-06-18, 20:14)Jaco van der Molen Wrote: [ -> ]No idea so far how to do that.
Any thoughts.
If you can somehow generate a lua variable definition with excel.
Then you can do the actual generating of the model in LDCad using a macro. All you would need is the x/z values in an array.
For an 3x3 grid you would need something like this:
Code:
local depthMap={ {0, 1, 2}, {4, 5, 6}, {7, 8, 9} }You use that in a macro run event like so:
Code:
function renDepthGen()
local sf=ldc.subfile()
if not sf:isLinked() then
ldc.dialog.runMessage('No active session')
return
end
local sel=ldc.selection()
sel:remove()
local depthMap={
{0, 1, 2},
{4, 5, 6},
{7, 8, 9}
}
local h=genTools.tableArrayCount(depthMap)
local w=genTools.tableArrayCount(depthMap[1])
for x=1,w do
for z=1,h do
local v=depthMap[z][x]
local v1=v // 3
local v2=v % 3
local xx=(x-1)*20
local zz=(z-1)*20
local yy=0
for b=1,v1 do
yy=yy-24
sel:add(sf:addNewRef('3005.dat', 4, ldc.matrix(xx, yy, zz)))
end
for p=1,v2 do
yy=yy-8
sel:add(sf:addNewRef('3024.dat', 4, ldc.matrix(xx, yy, zz)))
end
end
end
endWhich would give you:
[attachment=3196]
2018-06-18, 21:10
(2018-06-18, 20:56)NRoland Melkert Wrote: [ -> ](2018-06-18, 20:14)Jaco van der Molen Wrote: [ -> ]No idea so far how to do that.
Any thoughts.
If you can somehow generate a lua variable definition with excel.
Then you can do the actual generating of the model in LDCad using a macro. All you would need is the x/z values in an array.
For an 3x3 grid you would need something like this:
Code:local depthMap={ {0, 1, 2}, {4, 5, 6}, {7, 8, 9} }
You use that in a macro run event like so:
Code:function renDepthGen()
local sf=ldc.subfile()
if not sf:isLinked() then
ldc.dialog.runMessage('No active session')
return
end
local sel=ldc.selection()
sel:remove()
local depthMap={
{0, 1, 2},
{4, 5, 6},
{7, 8, 9}
}
local h=genTools.tableArrayCount(depthMap)
local w=genTools.tableArrayCount(depthMap[1])
for x=1,w do
for z=1,h do
local v=depthMap[z][x]
local v1=v // 3
local v2=v % 3
local xx=(x-1)*20
local zz=(z-1)*20
local yy=0
for b=1,v1 do
yy=yy-24
sel:add(sf:addNewRef('3005.dat', 4, ldc.matrix(xx, yy, zz)))
end
for p=1,v2 do
yy=yy-8
sel:add(sf:addNewRef('3024.dat', 4, ldc.matrix(xx, yy, zz)))
end
end
end
end
Which would give you:
Ah! Ok, I see. That is exactly what I meant!
My excel source can make the depth map, I understand how it works.
For a 16 by 16 baseplate you have 16 arrays with each 16 values.
Now if you can incorporate the color of the column too, I am there.
2018-06-18, 21:35
2018-06-19, 10:00
2018-06-19, 13:28
2018-06-19, 18:19
(2018-06-19, 13:28)Jaco van der Molen Wrote: [ -> ]With many thanks to Roland, here is an example of a complete script to generate a kind of landscape with a "height map" from Excel.
Excel source and LDraw file attached.
Fun
I was playing around with actual landscape generating last night using a "Diamond square algorithm" lua module I found somewhere.
Unfortunately it was too slow (due to the hard coded max script run time) to generate any real sized ones.
2018-06-20, 10:22
(2018-06-19, 18:19)Roland Melkert Wrote: [ -> ](2018-06-19, 13:28)Jaco van der Molen Wrote: [ -> ]With many thanks to Roland, here is an example of a complete script to generate a kind of landscape with a "height map" from Excel.
Excel source and LDraw file attached.
Fun
I was playing around with actual landscape generating last night using a "Diamond square algorithm" lua module I found somewhere.
Unfortunately it was too slow (due to the hard coded max script run time) to generate any real sized ones.
Oh, I see. Very interesting. I know the Diamond square algorithm is used in games for example to create terrain.
I found a post on Stackoverflow how to make a Diamond square algorithm output to excel, but it doesn't work properly.
If we could somehow get a Diamond square algorithm to work in excel and it outputs numbers in cells, we could use your script.
Or better still straight in LDCad.
I have a few thoughts on this and what it should be able to do, but alas I am not a programmer so no idea how to make it.
My idea is as follows:
- Modify the script to use only 1x1 plates
- Be able to set user prefs like set up dimensions in baseplate format 16x16, 32x32 or 48x48
- Set up colors corresponding to plate height for terrain
Ie. very global 0 = blue water, 1 = tan sand, 2 = bright green gras, 3 = green trees, 4 = DBG hill, 5 = LBG mountain, 6 = whith snow top
- Using the Diamond square algorithm create output in Excel or straight in LDCad (?) to fill the height array
- Generate the LDraw model
2018-06-20, 17:18
2018-06-21, 5:50
2018-06-21, 22:17
2018-06-22, 7:14
2018-06-22, 17:39
2018-06-25, 12:34
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2019-06-19, 6:04