Functions and Expressions

Expressions are an important part of C.a.R. They are used to fix points by coordinates, to set circle and angle sizes, and to compute and display formulas. C.a.R. has a rich set of numerical operations that can be used in expressions. Moreover, coordinates of points, lengths of segments and radii of circles can be used, as well as the area of polygons. Expressions in macros allow very complex operations, like projecting points to 3D.

Functions and parametric curves can be defined and plotted into the construction with or without a coordinate grid. Points can be fixed on function graphs and function graphs can be intersected with each other or with other objects. Moreover, functions can be used in other expressions.