======Метод SolveLib.IsLeft(Vector2D, Vector2D, Vector2D)======
  * **Пространство имен:** [[developers:references:topomatic.cad.foundation.cogo|Topomatic.Cad.Foundation.Cogo]]
  * **Сборка:** Topomatic.Cad.Foundation (в Topomatic.Cad.Foundation.dll)
=====Синтаксис=====
<code csharp>public static bool IsLeft(Vector2D p, Vector2D a, Vector2D b)</code>
**Параметры**
  * //p//
    * Тип: [[developers:references:topomatic.cad.foundation.vector2d|Topomatic.Cad.Foundation.Vector2D]]

  * //a//
    * Тип: [[developers:references:topomatic.cad.foundation.vector2d|Topomatic.Cad.Foundation.Vector2D]]

  * //b//
    * Тип: [[developers:references:topomatic.cad.foundation.vector2d|Topomatic.Cad.Foundation.Vector2D]]

**Возвращаемое значение**
  * Тип: [[developers:references:system.boolean|System.Boolean]]