hhacks/hhacks.py

# Set of startup scripts for SideFX's Houdini

import hou

def install_aliases():
    aliases = [
        (4, "from hhacks import redshift_quick_anim as _; _()"),
        (5, 'from hhacks import install_desktop as _; _()'),
        (6, 'from hhacks import make_geo_cache as _; _()'),
        (7, "from hhacks import iprs; iprs()[0].killRender();iprs()[0].startRender()"),
        (8, 'from hhacks import *; rop,_=rop_redshift(); rop.parm("RS_IPRRV").pressButton()'),
        (9, 'from hhacks import *; rop,_=rop_redshift(); rop.parm("trange").set(0); render(rop)'),
        (10, "from hhacks import *; render((hou.selectedNodes() or rop_redshift())[0])"),
        (11, "from hhacks import save_n_render as fn; fn(inc=False)"),
        (12, "from hhacks import save_n_render as fn; fn(inc=True)"),
    ]
    for fkey, hcmd in aliases:
        hou.hscript("alias F{} 'python -c \\'{}\\''".format(fkey, hcmd))

def rewind():
    """
    # rewind and return to current frame
    ffwd = rewind()
    ...
    hou.setFrame(ffwd)
    """
    frame = int(hou.frame())
    hou.setFrame(1)
    return frame

def rop_redshift():
    out = hou.node('/out')
    rop = out.node('Redshift_ROP1')
    if not rop:
        try:
            rop = out.createNode('Redshift_ROP')
        except:
            return None, None
        rop.moveToGoodPosition()
        rop.parm("ProgressiveRenderingEnabled").set(True)
        rop.parm('PrimaryGIEngine').set('RS_GIENGINE_BRUTE_FORCE')
        rop.parm('SecondaryGIEngine').set('RS_GIENGINE_PHOTON_MAPPING')
        rop.parm('UnifiedMaxSamples').set('1024')
        rop.parm('UnifiedAdaptiveErrorThreshold').set('0.001')
        rop.parm('RS_iprUpdateMeshDeform').set(True)
    ipr = out.node('Redshift_IPR1')
    if not ipr:
        ipr = out.createNode('Redshift_IPR')
        ipr.moveToGoodPosition()
        ipr.parm('linked_rop').set(rop.path())
    return rop, ipr

# Workaround for redshift rendering

def redshift_quick_anim(end_frame=hou.playbar.playbackRange()[1]):
    from time import sleep
    rop, ipr = rop_redshift()
    frame = int(hou.frame())
    hou.setFrame(1)
    hou.node('/obj/smoke_output/timeshift1').bypass(False)
    print('range', frame, int(end_frame)+1)
    for frame in range(frame, int(end_frame)+1):
        print('rendering frame:', frame)
        hou.node('/obj/smoke_output/timeshift1').parm('frame').setExpression('$F+{}-1'.format(frame))
        rop.parm('ProgressiveRenderingNumPasses').set(64)
        try:
            rop.render()
        except:
            pass
        sleep(40)
    hou.node('/obj/smoke_output/timeshift1').bypass(True)
    hou.setFrame(frame)

def redshift_still():
    redshift_quick_anim(end_frame=hou.frame())

def save_n_render(inc=False):
    if inc:
        hou.hipFile.saveAndIncrementFileName()
    else:
        hou.hipFile.save()
    if not hou.selectedNodes():
        print("no node selected")
        return 1
    if not isinstance(hou.selectedNodes()[0], hou.RopNode):
        print("no ROP node selected")
        return 1
    return render(hou.selectedNodes()[0])

def render(rop):
    x, y = [rop.parm(name) for name in 'executebackground', 'execute']
    render = x or y
    if not render:
        print("not a render node")
        return 1
    render.pressButton()
    return 0

def iprs():
    return [pane for pane in hou.ui.paneTabs() if isinstance(pane, hou.IPRViewer)]

def ipr_render():
    ipr = iprs()[0]
    ipr.killRender()
    ipr.startRender()

def install_desktop(pane_name="Network"):
    panels = [p for p in hou.ui.floatingPanels() if p.name()==pane_name]
    if not panels:
        panel = hou.ui.curDesktop().createFloatingPanel(hou.paneTabType.NetworkEditor, size=(1920,1080))
        panel.setName(pane_name)
        panel.attachToDesktop(True)

def set_desktop():
    desktops = {d.name(): d for d in hou.ui.desktops()}
    for name in ['2x2', '3x2', 'pie']:
        if name in desktops:
            desktops[name].setAsCurrent()
            break

def make_output_sop(geo, connect_to='', name=''):
    sop = geo.createNode('null', '_'.join(s for s in ['OUT', name] if s))
    if connect_to:
        sop.setInput(0, connect_to)
        if connect_to.isDisplayFlagSet():
            sop.setDisplayFlag(True)
        if connect_to.isRenderFlagSet():
            sop.setRenderFlag(True)
    sop.moveToGoodPosition()
    return sop


# from hhacks import make_geo_cache as _; _()
def make_geo_cache(name=''):
    """
    Create /out geometry cache. Save hip. Render in background.
    """

    # Path from selection or active view and connection
    if hou.selectedNodes() and hou.selectedNodes()[-1].parent().type().name() == 'geo':
        connect_to = hou.selectedNodes()[-1]
        geo = connect_to.parent()
        name = geo.path().split('/')[-1]
    else:
        connect_to = None
        geo = hou.ui.paneTabOfType(hou.paneTabType.NetworkEditor).pwd()

    # OUT_RENDER
    sop = make_output_sop(geo, connect_to, 'RENDER')

    # SOP
    out = hou.node('/out').createNode('geometry', '{}_cache'.format(name))
    out.moveToGoodPosition()
    out.parm('trange').set(1)
    out.parm('soppath').set(sop.path())

    # Create import nodes
    look = hou.node('/obj').createNode('geo', '{}_render'.format(name))
    in_file = look.createNode('file', 'IN_{}'.format(name))
    out_render = make_output_sop(look, connect_to=in_file)
    for node in [look, in_file, out_render]:
        node.moveToGoodPosition()

    print(in_file)
    print(dir(in_file))
    in_file.parm('file').set(out.parm('sopoutput'))

    hou.hipFile.save()
    out.parm('executebackground').pressButton()