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model.py
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model.py
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import enum
class BoundaryConditions(enum.Enum):
OPEN = 1
CLOSED = 2
WRAPPING = 3
water_flow_model = (
# Hyper parameters
dict(
resolution=256,
boundary_condition=BoundaryConditions.OPEN,
precision=16,
workgroup=[16, 16],
),
# Model parameters
dict(
dt=None,
pipe_coefficient=98.1,
cell_distance=1.0,
sediment_capacity=0.0005,
erosion_coefficient=0.0005,
deposition_coefficient=0.0005,
lower_tilt_bound=0.0,
evaporation_constant=0.05,
),
# Data maps
[
('terrain_height', 1),
('water_height', 1),
('water_influx', 1),
('water_height_after_influx', 1),
('water_crossflux', 4),
('water_velocity', 2),
('water_height_after_crossflux', 1),
('terrain_normal_map', 4),
('water_normal_map', 4),
],
# Processes
dict(
add_water=( # step name
'add_water', # shader source
['workgroup', 'precision'], # hyper parameters
['dt'], # model parameters,
dict(
heightIn='water_height', # glsl input name='map_name'
influx='water_influx',
heightOut='water_height_after_influx',
),
),
calculate_outflux=(
'calculate_outflux',
['workgroup', 'precision', 'boundary_condition'],
['dt', 'pipe_coefficient', 'cell_distance'],
dict(
terrainHeight='terrain_height',
waterHeight='water_height_after_influx',
waterCrossflux='water_crossflux',
),
),
apply_crossflux=(
'apply_crossflux',
['workgroup', 'precision', 'boundary_condition'],
['dt', 'cell_distance'],
dict(
heightIn='water_height_after_influx',
waterCrossflux='water_crossflux',
waterVelocity='water_velocity',
heightOut='water_height_after_crossflux',
),
),
evaporate=(
'evaporate',
['workgroup', 'precision'],
['dt', 'evaporation_constant'],
dict(
heightIn='water_height_after_crossflux',
heightOut='water_height',
),
),
calculate_terrain_normals=(
'calculate_terrain_normals',
['workgroup', 'precision', 'boundary_condition'],
[],
dict(
terrainHeight='terrain_height',
normals='terrain_normal_map',
),
),
calculate_water_normals=(
'calculate_water_normals',
['workgroup', 'precision', 'boundary_condition'],
[],
dict(
terrainHeight='terrain_height',
waterHeight='water_height',
normals='water_normal_map',
),
),
),
)
cutting_edge_model = (
# Hyper parameters
dict(
resolution=256,
boundary_condition=BoundaryConditions.OPEN,
precision=16,
workgroup=[16, 16],
debug=True,
),
# Model parameters
dict(
dt=None,
pipe_coefficient=98.1,
cell_distance=1.0,
sediment_capacity=0.0005,
erosion_coefficient=0.0005,
deposition_coefficient=0.0005,
lower_tilt_bound=0.0,
evaporation_constant=0.05,
),
# Data maps
[
('terrain_height', 1),
('water_height', 1),
('water_influx', 1),
('water_height_after_influx', 1),
('water_crossflux', 4),
('water_velocity', 2),
('water_height_after_crossflux', 1),
('terrain_height_after_erosion_deposition', 1),
('suspended_sediment', 1),
('suspended_sediment_after_erosion_deposition', 1),
('suspended_sediment_after_transport', 1),
('water_height_after_evaporation', 1),
('terrain_normal_map', 4),
('water_normal_map', 4),
('debug_sediment_transfer', 2),
],
# Processes
dict(
add_water=( # step name
'add_water', # shader source
['workgroup', 'precision'], # hyper parameters
['dt'], # model parameters,
dict(
heightIn='water_height', # glsl input name='map_name'
influx='water_influx',
heightOut='water_height_after_influx',
),
),
calculate_outflux=(
'calculate_outflux',
['workgroup', 'precision', 'boundary_condition'],
['dt', 'pipe_coefficient', 'cell_distance'],
dict(
terrainHeight='terrain_height',
waterHeight='water_height_after_influx',
waterCrossflux='water_crossflux',
),
),
apply_crossflux=(
'apply_crossflux',
['workgroup', 'precision', 'boundary_condition'],
['dt', 'cell_distance'],
dict(
heightIn='water_height_after_influx',
waterCrossflux='water_crossflux',
waterVelocity='water_velocity',
heightOut='water_height_after_crossflux',
),
),
erode_deposit=(
'erode_deposit',
['workgroup', 'precision', 'debug'],
['dt', 'sediment_capacity', 'erosion_coefficient', 'deposition_coefficient', 'lower_tilt_bound'],
dict(
terrainHeightIn='terrain_height',
terrainHeightOut='terrain_height_after_erosion_deposition',
normals='terrain_normal_map',
waterVelocity='water_velocity',
sedimentIn='suspended_sediment',
sedimentOut='suspended_sediment_after_erosion_deposition',
sedimentation='debug_sediment_transfer',
),
),
transport_sediment=(
'transport_solute',
['workgroup', 'precision'],
['dt'],
dict(
soluteIn='suspended_sediment_after_erosion_deposition',
soluteOut='suspended_sediment_after_transport',
velocityMap='water_velocity',
),
),
evaporate=(
'evaporate',
['workgroup', 'precision'],
['dt', 'evaporation_constant'],
dict(
heightIn='water_height_after_crossflux',
heightOut='water_height_after_evaporation',
),
),
update_terrain_height=(
'update_main_data',
['workgroup', 'precision'],
[],
dict(
heightNew='terrain_height_after_erosion_deposition',
heightBase='terrain_height',
),
),
update_water_height=(
'update_main_data',
['workgroup', 'precision'],
[],
dict(
heightNew='water_height_after_evaporation',
heightBase='water_height',
),
),
update_sediment=(
'update_main_data',
['workgroup', 'precision'],
[],
dict(
heightNew='suspended_sediment_after_transport',
heightBase='suspended_sediment',
),
),
calculate_terrain_normals=(
'calculate_terrain_normals',
['workgroup', 'precision', 'boundary_condition'],
[],
dict(
terrainHeight='terrain_height',
normals='terrain_normal_map',
),
),
calculate_water_normals=(
'calculate_water_normals',
['workgroup', 'precision', 'boundary_condition'],
[],
dict(
terrainHeight='terrain_height',
waterHeight='water_height',
normals='water_normal_map',
),
),
),
)