Uploaded May 2026 | Updated September 2026, 3 weeks ago
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PROJECT FILE
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Patreon - patreon.com/posts/houdini-falloff-157082139
Gumroad - nodeconnector.gumroad.com/l/falloff-hda
In this tutorial you'll learn how to build two professional-grade Houdini Digital
Assets (HDAs) from scratch — a Linear Falloff and a Spherical Falloff SOP —
with fully interactive viewport handles, HUD sliders, and a VEX-driven falloff
attribute.
This is one of the few tutorials covering interactive handle setup for custom
HDAs in Houdini, including Handle Bindings, HUD sliders, and the f@Falloff
attribute workflow used in production pipelines.
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WHAT YOU'LL LEARN
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→ Creating SOP-level HDAs from Scratch
→ Writing VEX for linear and spherical falloff (f@Falloff attribute)
→ Setting up interactive viewport handles using Handle Bindings (no Python required)
→ Adding HUD sliders for radius control
→ Using the Ramp parameter to remap falloff curves
→ Guide geometry for wireframe viewport visualization
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TOOLS & SOFTWARE
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→ Houdini 20+ (Indie or FX)
→ VEX
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WHO IS THIS FOR
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
This tutorial is aimed at intermediate to advanced Houdini users who want to
build reusable, artist-friendly tools. If you've used MOPs or similar falloff
systems and want to understand how they work under the hood — or build your own
— this is for you.
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TIMESTAMPS
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00:00 Intro
00:22 Tutorial Overview
01:20 HDA - Spherical Falloff Parameter Setup
04:02 VEX - Sperical Falloff
09:26 Interactive Handles Setup - Sperical Falloff
14:09 HDA - Linear Falloff Parameter Setup
16:44 VEX - Linear Falloff
21:44 Interactive Handles Setup - Linear Falloff
24:17 Selection Menu for Interactive Handles
27:07 Outro
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
LINKS & RESOURCES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Houdini Handle Bindings Docs:
sidefx.com/docs/houdini/basics/hud_handles.html
→ Nodeconnector Website: nodeconnector.com
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TAGS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
#Houdini #HDA #VEX #HoudiniTutorial #DigitalAsset #HoudiniFX
#procedural #3D #TD #TechnicalArtist #SideFX #HoudiniHandles
#falloff #HoudiniVEX #HoudiniTD #proceduralmodeling
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PROJECT FILE
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Patreon - patreon.com/posts/houdini-falloff-157082139
Gumroad - nodeconnector.gumroad.com/l/falloff-hda
In this tutorial you'll learn how to build two professional-grade Houdini Digital
Assets (HDAs) from scratch — a Linear Falloff and a Spherical Falloff SOP —
with fully interactive viewport handles, HUD sliders, and a VEX-driven falloff
attribute.
This is one of the few tutorials covering interactive handle setup for custom
HDAs in Houdini, including Handle Bindings, HUD sliders, and the f@Falloff
attribute workflow used in production pipelines.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHAT YOU'LL LEARN
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Creating SOP-level HDAs from Scratch
→ Writing VEX for linear and spherical falloff (f@Falloff attribute)
→ Setting up interactive viewport handles using Handle Bindings (no Python required)
→ Adding HUD sliders for radius control
→ Using the Ramp parameter to remap falloff curves
→ Guide geometry for wireframe viewport visualization
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TOOLS & SOFTWARE
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Houdini 20+ (Indie or FX)
→ VEX
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHO IS THIS FOR
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
This tutorial is aimed at intermediate to advanced Houdini users who want to
build reusable, artist-friendly tools. If you've used MOPs or similar falloff
systems and want to understand how they work under the hood — or build your own
— this is for you.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TIMESTAMPS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
00:00 Intro
00:22 Tutorial Overview
01:20 HDA - Spherical Falloff Parameter Setup
04:02 VEX - Sperical Falloff
09:26 Interactive Handles Setup - Sperical Falloff
14:09 HDA - Linear Falloff Parameter Setup
16:44 VEX - Linear Falloff
21:44 Interactive Handles Setup - Linear Falloff
24:17 Selection Menu for Interactive Handles
27:07 Outro
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
LINKS & RESOURCES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Houdini Handle Bindings Docs:
sidefx.com/docs/houdini/basics/hud_handles.html
→ Nodeconnector Website: nodeconnector.com
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TAGS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
#Houdini #HDA #VEX #HoudiniTutorial #DigitalAsset #HoudiniFX
#procedural #3D #TD #TechnicalArtist #SideFX #HoudiniHandles
#falloff #HoudiniVEX #HoudiniTD #proceduralmodeling
