Part of the work need to be completed was the ground color generator and a lot of math behind the temperature vs. rainfall biome selector. All of these things are finished, the first draft is ready for recreational release, and I will now move on to the foliage generation. This will be released in V2 of the Biome Generator.
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| If look closely you can see the ground color change slightly from dark to bright. These are two forest based biomes. |
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| As you can see, there's a bit of variety in color added to create slightly more complex (Yet low polygon) groundscape. The shrubbery will be added in version 2. |
The generator works by taking any selected landscape, and starting from the top descending to the bottom, it begins to assign a biome to each individual face. This generator works via individual faces instead of a more complex blending algorithm simply because this is a proof-of-concept tool, AND a cool excuse to make low-poly artwork.
Just remember this is version 1, and there's a lot I could clean up, but for now, I'm just trying to get this out there, and I'll try to clean my code up around V.3.
You can use it by doing the following:
Copy/Paste the following code into Blender 3D's Python Interpreter:
def create_biome(temp1,temp2,rain1=40,rain2=40): #Rainfall is default 40 cm. temp in C.
land = bpy.context.object
temperature_range = abs(temp1-temp2)
rainfall_range = abs(rain1-rain2)
height = land.dimensions.z
material0 = bpy.data.materials.new(name='Cold Red Grass')
material0.diffuse_color = (0.67, 0.14, 0.07)
land.data.materials.append(material0)
material1 = bpy.data.materials.new(name='Rocks and Gravel')
material1.diffuse_color = (0.52, 0.43, 0.22)
land.data.materials.append(material1)
material2 = bpy.data.materials.new(name='Desert Shrub')
material2.diffuse_color = (0.18, 0.34, 0.22)
land.data.materials.append(material2)
material3 = bpy.data.materials.new(name='Dead Grass')
material3.diffuse_color = (0.53, 0.26, 0.16)
land.data.materials.append(material3)
material4 = bpy.data.materials.new(name='Rocks/Leaves/Sticks')
material4.diffuse_color = (0.51, 0.28, 0.14)
land.data.materials.append(material4)
material5 = bpy.data.materials.new(name='Light Foliage/Moss')
material5.diffuse_color = (0.13, 0.38, 0.03)
land.data.materials.append(material5)
material6 = bpy.data.materials.new(name='Desert Sand')
material6.diffuse_color = (1, 0.37, 0.13)
land.data.materials.append(material6)
material7 = bpy.data.materials.new(name='Dense Grass/Shrub')
material7.diffuse_color = (0.16, 0.48, 0.02)
land.data.materials.append(material7)
material8 = bpy.data.materials.new(name='Dense Shrub')
material8.diffuse_color = (0.03, 0.30, 0)
land.data.materials.append(material8)
material9 = bpy.data.materials.new(name='Charred Earth')
material9.diffuse_color = (0.49, 0.15, 0.07)
land.data.materials.append(material9)
materialsnow = bpy.data.materials.new(name='Snow')
materialsnow.diffuse_color = (1.0, 1.0, 1.0)
land.data.materials.append(materialsnow)
for x in land.data.polygons: #Begins to assign materials to polygons from top to bottom.
m = x.center.z + (height / 2) + 0.01 #math modifiers to find temperature at point.
j = height / m
if temp1 >= temp2:
temp_proxy = (temperature_range / j) + min(temp1,temp2) #determines temperature at specified height.
elif temp1 < temp2: #GET THIS WORKING HERE.
temp_proxy = temperature_range - (temperature_range / j) + min(temp1,temp2)
#temp_proxy = (temperature_range / j) + min(temp1,temp2) #determines temperature at
if rain1 >= rain2:
rainfall = (rainfall_range / j) + min(rain1,rain2)
if rain1 < rain2:
rainfall = rainfall_range - (rainfall_range / j) + min(rain1,rain2)
graphline = 165+(temp_proxy*10) #This is to cut the diagonal line on the biome graph.
if rainfall > graphline: #This corrects any rainfall above what is actually realistic.
rainfall == graphline-1
""" -------------------Begin material assignment-------------- """
if temp_proxy < -5: # and (temp_proxy > graphline): #Tundra
sl = 15 * abs(temp_proxy + 5)
snow = ranyn(sl) #This math causes more snow for lower temperature.
if snow == 1:
x.material_index = 10
elif snow == 0:
x.material_index = choice([0,1]) #Assign proper Biome Color to polygon
if (temp_proxy >= -5) and (temp_proxy < 3) and (rainfall >= 30): #taiga.
x.material_index = choice([1,7,7,7])
plant(x,1,'Pine') """ THIS IS A TEST """
if (temp_proxy >= -5) and (temp_proxy < 13) and (rainfall < 30): #Desert and Grassland
x.material_index = choice([1,2,3])
if (temp_proxy >= 3) and (temp_proxy < 20) and (rainfall >= 30) and (rainfall < 85): #Woodland/Shrubland
x.material_index = choice([7,3])
if (temp_proxy >= 3) and (temp_proxy < 20) and (rainfall >= 85): #Temperate Deciduous Forest
x.material_index = choice([7,4])
if (temp_proxy >= 3) and (temp_proxy < 20) and (rainfall >= 215) and (rainfall < 215): #Temperate Rain Forest
x.material_index = choice([4,5,5])
if (temp_proxy >= 13) and (temp_proxy < 28) and (rainfall < 30): #Subtropical Desert
x.material_index = choice([6,6,6,2])
if (temp_proxy >= 20) and (temp_proxy < 28) and (rainfall >= 30) and (rainfall < 265): #Tropical Seasonal Forest
x.material_index = choice([7,7,4])
if (temp_proxy >= 20) and (temp_proxy < 28) and (rainfall >= 265): #Tropical Rain Forest
x.material_index = choice([8,8,8,4])
if temp_proxy >= 28: #Mars.
x.material_index = choice([1,9])
Once you've done that, you can use the tool by selecting the landscape you want biome-ified and calling the following function: (Just copy paste this into your interpreter if you don't understand what I'm talking about.)
create_biome(-15,10,40,60)
The function works using the following parameters:
create_biome(
Starting_Temperature,
Ending_Temperature,
Starting_Rainfall,
Ending_Rainfall
)
#Temperature in celcius and Rainfall in centimeters.
You can use the following chart as a sort of cheat sheet:
Click the link below for download link:
Download Here
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