Water Flow

Use Musgrave Texture to simulate water flowing.

Note

This example is from bilibili by @峰峰居士.

Geometry Nodes

Geometry Nodes

from pynodes import *

# Disable viewport denoising
bpy.context.scene.eevee.use_taa_reprojection = False

@tree
def water_flow():
    grid = MeshGrid(20, 20, 100, 100).mesh
    with frame("Vector"):
        time = SceneTime().seconds
        pos = grid.position + (time * 1.5, 0, time * 0.5)
    height = MusgraveTexture("3D", "FBM", pos, 0, 0.2, 5, 1, 2).fac
    grid.set_position(offset=(0, 0, height * 0.5))
    grid.set_position(offset=grid.normal * -0.5)
    return grid.set_shade_smooth().set_material("Water")

Water Material

Water Material

@tree
def water():
    """@material"""
    shader = BsdfPrincipled()
    shader.base_color = "#85BDC1"
    shader.transmission = 1
    shader.roughness = 0.07
    time = InputFloat("#frame/30")
    pos = TextureCoord().object + (time, 0, time * 0.5)
    height = MusgraveTexture("3D", "FBM", pos, 0, 0.6, 5, 1, 2).fac
    shader.normal = height.to_normal(strength=0.1)
    return shader