User:Gaganjyotsingh/librecadkernel

LibreCAD Kernel Documentation/API Documentation for the usage with other softwares.

LibreCAD kernel is a library to perform 2D operations. Rightnow it supports the basic entities like circle, line, arc, ellipse ( Although can be extended to b-splines, beizer curves ) and the code is built in C++ and Qt. .

It now follows a document based approach and has been designed to be very extensible.

It supports the operations of creating, deleting and trimming of entities. Has an undo-redo stack hence you can do unlimited undos and redos.

Things that are going to be implemented in GSoC are,

• support for moving entities from one position to another.
• Ability to copy entities any number of times.
• Scaling the entities.
• Rotating the entities with respect to some point.

• It will have support for text and dimensioning after the GSoC period.

Directory structure and operations,

Base directory :

cadentity.*

It is the base class for all entities and each entity is inherited from this class.

id.*

These file contain the class that generates a unique ID for every new entity so created.

metainfo.*

These files contains the classes which are metatypes for any entity. For example the pen color, line width, layer of entity.

Dochelpers :

These are the implementation files of the files in document folder( containing the virtual functions).

documentimpl

contains the following functions,

• addentity
• removeentity
• begin a process
• commiting a process

documentlayerimpl

• add entity // adds an entity to the layer
• remove entity // removes the entity from the layer
• find by id // Finds the entity by the unique ID specified

layermanagerimpl It manages the layers, adds/deletes layers.