Routing: Add SetCumulVarPiecewiseLinearCost() to the swig wrapper

[Mizux]

What version of OR-Tools and what language are you using?
Version: master/v9.0
Language: Java/Python/C#

Which solver are you using ?
Routing Solver

What operating system (Linux, Windows, ...) and version?
All

What did you expect to see
method is wrapped

What did you see instead?
methods are disabled by a preprocessor directive #ifndef SWIG ...

or-tools/ortools/constraint_solver/routing.h

Lines 2498 to 2512 in b37d9c7

	#ifndef SWIG
	/// Sets a piecewise linear cost on the cumul variable of a given variable
	/// index. If f is a piecewise linear function, the resulting cost at 'index'
	/// will be f(CumulVar(index)). As of 3/2017, only non-decreasing positive
	/// cost functions are supported.
	void SetCumulVarPiecewiseLinearCost(int64_t index,
	const PiecewiseLinearFunction& cost);
	/// Returns true if a piecewise linear cost has been set for a given variable
	/// index.
	bool HasCumulVarPiecewiseLinearCost(int64_t index) const;
	/// Returns the piecewise linear cost of a cumul variable for a given variable
	/// index. The returned pointer has the same validity as this class.
	const PiecewiseLinearFunction* GetCumulVarPiecewiseLinearCost(
	int64_t index) const;
	#endif

Todo Task

• Be able to wrap the PiecewiseLinearFunction object
• Enable wrap for these methods

[anghy23]

Waiting for a PiecewiseLinearFunction wrap, is it possible to add a couple of overloading of SetCumulVarPiecewiseLinearCost() taking in input a fixed number of parameters representing the PiecewiseLinearFunction? Iternally it could use PiecewiseLinearFunction::CreateFullDomainFunction() to build the right object.

e.g.: SetCumulVarPiecewiseLinearCost(int64_t index, int64_t initial_level, int64_t x1,
int64_t slope1, int64_t x2, int64_t slope2, int64_t x3, int64_t slope3, int64_t slope_final),