The main axis onto which the
Focus
is transformed in order to perform the perspective projection, z by default.It will normally not matter which axis is used, but it might be advantageous to use a particular axis in some special situations.
The
Transform
, which will be applied to theShapes
on thePicture
, when the latter is output. The effect of this is equivalent to transforming theFocus
, so that it lies on a major axis.Focus f(5, 5, -10, 2, 4, 10, 10, 180); ⇒f.transform
== 0.989 -0.00733 -0.148 0 0 0.999 -0.0494 0 0.148 0.0488 0.988 0 -3.4 -4.47 0.865 1