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Straight line veins.

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This commit is contained in:
Tomáš Brada 2015-05-10 13:59:05 +02:00
parent 5864a396f5
commit f0f1edc94e
2 changed files with 36 additions and 0 deletions
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2
rocks/init.lua
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@ -30,12 +30,14 @@ dofile(modpath.."/ign.lua")
dofile(modpath.."/skarn.lua")
dofile(modpath.."/pegmatite.lua")
dofile(modpath.."/gensed.lua")
dofile(modpath.."/veins.lua")
minetest.register_on_generated(function(minp,maxp,seed)
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
rocksl.gensed(minp,maxp,seed,vm,area)
--rocksl.genign
rocksl.genvein(minp,maxp,seed,vm,area)
vm:write_to_map(data)
end)

34
rocks/veins.lua Normal file
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@ -0,0 +1,34 @@
-- experimental fast vein generator
rocksl.genvein=function(minp,maxp,seed,vm,area)
local t1 = os.clock()
local data = vm:get_data()
local chunksize = maxp.x - minp.x + 1
local pmapsize = {x = chunksize, y = chunksize, z = chunksize}
local minpxz = {x = minp.x, y = minp.z}
local pr=PseudoRandom(seed)
local c_sample=minetest.get_content_id("default:mese")
local numveins_raw=(chunksize/8)
local numveins = numveins_raw + (pr:next(-100,100)/100)
local numveins = 1
print("numveins="..numveins)
for vc=1, numveins do
local pointA=vector.new(pr:next(minp.x,maxp.x),pr:next(minp.x,maxp.x),pr:next(minp.x,maxp.x))
local pointB=vector.new(pr:next(minp.x,maxp.x),pr:next(minp.x,maxp.x),pr:next(minp.x,maxp.x))
local dir=vector.subtract(pointB,pointA)
local step=(1/vector.length(dir))
--vectorA=vector.add(pointA,minp)
for t=0, 1, step do
local p=vector.add(pointA, vector.multiply(dir,t) )
p=vector.round(p)
local di=area:index(p.x,p.y,p.z)
data[di]=c_sample
end
end
vm:set_data(data)
minetest.log("action", "rocks/genvein/ "..math.ceil((os.clock() - t1) * 1000).." ms ")
end