Issue when porting an example sketch from the Hemesh library to Python mode

Processing.py
2

Your port is using WB_IsoSurface instead of HEC_IsoSurface used by the original sketch.

I still haven’t dug why your WB_IsoSurface fails.
But I did a Python Mode port of the original using HEC_IsoSurface.

Actually I did 2 versions: A java-ish and a pythonic.

The java-ish 1 uses an actual double[][][] array w/ a triple loop.
While the pythonic 1 uses a 3d list comprehension as you did too.

“Ref_HEC_IsoSurface_Javaish.pyde”:

"""
 Ref_HEC_IsoSurface (Java-ish version) (v1.0.1)
 ported by GoToLoop (2019-Feb-21)

 https://Discourse.Processing.org/t/
 issue-when-porting-an-example-sketch-from-the-
 hemesh-library-to-python-mode/8570/2

 https://GitHub.com/wblut/HE_Mesh/blob/master/examples/
 hemesh/create/Ref_HEC_IsoSurface/Ref_HEC_IsoSurface.pde
"""

add_library('hemesh')

from java.lang.reflect import Array
from java.lang import Double

DIM, N = 51, .07
DRANGE = tuple(range(DIM))

BG, FG = 070, 0
FPS = 'FPS: '

def setup():
    size(800, 700, P3D)
    smooth(8)

    creator = HEC_IsoSurface()

    creator.setResolution(50, 50, 50)
    creator.setSize(8, 8, 8)
    creator.setIsolevel(.6)
    creator.setBoundary(-200)
    creator.setGamma(.3)
    creator.setInvert(False)

    arr3d = Array.newInstance(Double.TYPE, DIM, DIM, DIM)
    creator.setValues(arr3d)

    for z, arr2d in enumerate(arr3d):
        for y, arr1d in enumerate(arr2d):
            for x in DRANGE: arr1d[x] = noise(N*x, N*y, N*z)

    global render, mesh
    render, mesh = WB_Render(this), HE_Mesh(creator)


def draw():
    background(BG)
    lights()

    translate(width>>1, height>>1)
    rotateY(TAU * mouseX / width)
    rotateX(TAU * mouseY / height)

    noStroke()
    render.drawFaces(mesh)

    stroke(FG)
    render.drawEdges(mesh)

    this.surface.title = FPS + `this.round(frameRate)`

“Ref_HEC_IsoSurface_Pythonic.pyde”:

"""
 Ref_HEC_IsoSurface (Pythonic version) (v1.0.1)
 ported by GoToLoop (2019-Feb-21)

 https://Discourse.Processing.org/t/
 issue-when-porting-an-example-sketch-from-the-
 hemesh-library-to-python-mode/8570/2

 https://GitHub.com/wblut/HE_Mesh/blob/master/examples/
 hemesh/create/Ref_HEC_IsoSurface/Ref_HEC_IsoSurface.pde
"""

add_library('hemesh')

DIM, N = 51, .07
DRANGE = tuple(range(DIM))

BG, FG = 070, 0
FPS = 'FPS: '

def setup():
    size(800, 700, P3D)
    smooth(8)

    creator = HEC_IsoSurface()

    creator.setResolution(50, 50, 50)
    creator.setSize(8, 8, 8)
    creator.setIsolevel(.6)
    creator.setBoundary(-200)
    creator.setGamma(.3)
    creator.setInvert(False)

    creator.setValues(
        [[[noise(N*x, N*y, N*z) for z in DRANGE]
        for y in DRANGE] for x in DRANGE]
    )

    global render, mesh
    render, mesh = WB_Render(this), HE_Mesh(creator)


def draw():
    background(BG)
    lights()

    translate(width>>1, height>>1)
    rotateY(TAU * mouseX / width)
    rotateX(TAU * mouseY / height)

    noStroke()
    render.drawFaces(mesh)

    stroke(FG)
    render.drawEdges(mesh)

    this.surface.title = FPS + `this.round(frameRate)`
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