2010

Table Of Contents
until you run the solver again and create a new solution. You will do this
later in the lesson.
This constraint is not based on a film set measurement; it is simply an
estimate. Using estimates to control the space between locators is often
useful, but be careful not to use too many estimates. Too many estimates
can prevent the solver from finding a solution.
Creating a Plane constraint
In addition to the space between locators, you may want them to be
repositioned within the scene. For example, you may want the flower locators
in the solution to rest on top of the perspective view grid, just as the flowers
in the shot rest on the ground. In the current solution, the flower locators
rest below the grid.
A convenient way to bring points onto the grid is to use a Plane constraint,
which aligns locators onto a plane.
To create a Plane constraint for the ground
1 Choose Plane from the Constraint Type menu.
2 Select the following track points in the Outliner under
clip1TrackedPointVisibilityGroup > clip1TrackedPointGroup:
flower1
fenceCorner
flower2
tileInFront
In the shot, these points correspond to points on the ground.
3 Click Create. Live places the Plane constraint on the perspective view
grid by default.
1004 | Chapter 20 Live