8

First Vertex 1035
Same scene with final gather used to smooth the global
illumination
Same scene w ith final gather but no global illum ination, for
comparison
Final gathering can greatly increase rendering
time. It is m ost useful for scenes with overall
diffuse li ghting, less useful for scenes with bright
spots of indirect i llumination such as focused
caustics.
YouturnonfinalgatheringontheRenderScene
dialog > Indirect Illumination panel >
Final
Gather rollout (page 3–109)
.
Fi rs t V e rt ex
First vertex of a spline
When you create a spline object, the software
numbers the vertices from 1 to the total number
of vertices in the spline, according to the order
of creation. When the spline is displayed 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, yo u
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-objec t level).