9

First Vertex 941
Same scene with final gather used to smooth the global
illumination
Same scene with final gather but no global illumination, for
comparison
Final gathering can greatly increase rendering
time. It is most useful for scenes with overa ll
diffuse lighting, less useful for scenes with brig ht
spots of indirect illuminat ion such as focused
caustics.
YouturnonfinalgatheringontheRenderScene
dialog > Indirect Illumination panel > Final
Gather rollout (page 3–111).
Fi rs t V ert e x
First vertex of a spline
When you create a spline object, the s oftware
numbers the ver tices from 1 to t he total number
of vertices in the spline, according to the order
of creation. When the spline is displaye d in
vie wports, the first vertex has a box around it.
Thefirstvertexiscommonlyusedasanalignment
marker when you place two or more shapes on
different path levels when lofting. If you place
different shapes on different path levels and you
don’t align their first vertices, the resulting mesh
object is twisted.
To avoid twisting, you can align the first vertices by
rotating the splines as necessary. Alternatively, you
can change the position of a spline’s first vertex
by using the Make First button in the Edit Spline
modifier (at the Vertex sub-object level).