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The generated clump data will remain stored with the operator. Once they are generated they will remain until you either edit them or delete them. Clumping toolĬlumps need to be generated manually by selecting a method for generation and clicking the Create Clumps button.
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This process is invisible to the user, however, it is important to understand this because having more hairs in viewport during clump generation and editing will produce more precise and detailed clump borders. Modifying the clumps after changing the viewport hair positions or count will not affect previous clumping, it will merely use the currently visible viewport hair to generate and update the internal clump guide hairs. Closest guide clump hairs will be used to determine which clump the final hair belongs to. Any hair which is later added (for example, if you increase input hair count or during rendering) will use the hairs which were present during clump generation as guides. The clumping is performed on currently visible hair inside the viewport. When the clump node is first added a few random clumps are automatically generated on the hair. Each clump is defined by it's center stem. You can control how these clumps are generated, where they are placed, and how the hairs are attracted to them.
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Making-of Someone (Facial hair breakdown).Controlling Parameters with Mesh Vertex Colors.
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