README

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Castle Lines 2D is a set of two components for Castle Game Engine ([https://castle-engine.io/](https://castle-engine.io/)))

Castle Lines 2D makes it possible to create geometry from polygons directly in the CGE editor.

Castle Lines 2D consists of classes inherited from TCastleAbstractPrimitive:

TCastleLine2D - polyline.

TCastlePolygon2D - potentially non-convex polygon.

To enter the editing mode, use the drop-down menus in the object hierarchy window

Left mouse button - add a point, move a point.

Right mouse button - delete a point.

Middle mouse button - open a window for editing a point.

Detailed usage instructions:

1. Get TCastleLine2D code.
2. Point your project to TCastleLine2D sources. E.g. add this to CastleEngineManifest.xml:
   pascalCopy

   <compiler_options>
     <search_paths>
       <path value="code/" />
       <path value="../../../CastleLines2D/src/" />
     </search_paths>
   </compiler_options>

3. Add to CastleEngineManifest.xml the line editor_units="CastleLine2D,CastlePolygon2D".
   See CastleEngineManifest.xml docs for examples.
4. Open your project in CGE editor and use “Project -> Restart Editor (With Custom Components)”
5. In Lazarus don't forget to add the source path to “Project Options -> Compiler Options -> Paths -> Other unit files”
6. Be sure to also add CastleLine2D, CastlePolygon2D to some uses clause, to register components at runtime.

Documentation

For detailed documentation, see [https://kumurtash.github.io/CastleLines2D-docs/index.html](https://kumurtash.github.io/CastleLines2D-docs/index.html)

Examples

For examples, see /CastleLines2D/examples

Change log

12.01.2023

Added various ways to apply texture to TCastleLine2D, TCastlePolygon2D.

The Shift key now helps to draw straight lines.

In CastlePolygon2D added property - Area

Bugs fixed.

More details

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