VRay concrete material水泥材質製作流程

文 / Hammer Chen

大致介紹一下用V-Ray製作水泥材質的流程。這裡的重點是如何從一張照片產生無縫的diffuse，再根據這張產生reflection map，gloss map與normal map。中部粽堆疊在一起則是用thinkingParticles模擬出來的，之後再另文說明。

VRay PBR材質練習

文 / Hammer Chen
素材 / bernhardrieder.com

這篇是筆者在Chaosgroup官方論壇看到的關於3DCoat或Substance Designer輸出的PBR紋理，如何對應到V-Ray material的精采討論。bernhard 先生除了上傳它的素材，還錄了以下教學影片。什麼是PBR材質建議先閱讀這篇。

V-Ray 3.4 能偵測模型變化的關鍵遮罩

文 /Hammer Chen

介紹四種主要的能根據模型而改變的材質遮罩（geometry sensitive mask）。對於寫實材質設定非常關鍵。

教學影片：VRay黃金材質

應網友要求將之前的黃金教學操作錄成影片。文字教學連結點這裡。

Phoenix FD vs RealFlow Comparison

by Hammer Chen

	Realflow 2015	PhoenixFD 2.2 official build
Developer	Next limit	Chaos Group
price	1995€ *	921.5USD without Dongle *
Package	Standalone software + Connectivity Plugins or REALFLOW for CINEMA 4D	Phoenix FD for 3ds Max or Maya
UI	Standard UI + node-based Relationship Editor	Tabs and rollouts
Sim Methods	SPH FLIP (Hybrido)	Grid-based
Fluid solver selections	-DYVERSO solvers	3 Conservation 4 Material Transfer
multi-threading sim	YES	YES
GPU acceleration	solvers	viewport preview
Network simulation	YES, Independent Domain Of Computation
Sim capability	-Small scale liquid and splashs -Large scale ocean, waves and splashs - foam, bubbles and mist	-Small scale liquid and splashs -Large scale ocean, waves and splashs -foam, bubbles -Non-Newtonian
Physical Properties	- Surface tension - Density - Viscosity - Vorticity - Int Pressure, Ext Pressure - Compressibility	-Surface Tension -Viscosity (normalized to 0~1) -Vorticity
Dynamics	- Rigid body (Caronte solver) - Soft body - Fibers	passive rigid body interaction only
Emitter	- Circle, square, sphere, linear - Object	-PHXSource (supporting shape and mesh)
Emission type	- Speed - fill object	-Inject -Brush -initial fill up
Specialized Force / Daemon	-Shetter Daemon -DSpline daemon -Crown daemon -Layered Vortex Daemon -k Isolated, k volume, k speed Daemon -Morph, Magic Daemon -Filter Daemon -Attractor	-PHXTurbulence
3rd Party  Plug-ins	-Wet Work -loSim -RF_toolfactory
Ocean Mesh	Realwave + spectrum...etc	Automatic mesh extension inside of camera frustum + PhoenixFDOceanTex vector displacement
Stepping control	Min and Max Substeps	Steps per frame
Retime	Time function curve editor	Resimulation
Mesher control	- Speed stretching - polygon size - metaballs, Weighted isotropic and Weighted Anisotropic -Filter: thinning, relaxation, tension, steps	-Preview / Show mesh -Mode: mesh, ocean, cap, implicit surface and geometry atomosphere -sampler type: box, linear, spherical
Mesh optimization	Curvature / Camera	Output / storage quality
Import	sd, obj, abc, bin...etc	- all 3dsMax /Maya suport formats -PRT loader -vdb, f3d
Export	abc, bin, obj...etc	-PhoenixFD export particles / prt
Renderer	Maxwell

*Please check official website for their local store / sales details.