Introduction

Castle Lines 2D is a set of two components for Castle Game Engine.

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.

EditModeOn

Detailed usage instructions:

Get CastleLine2D code.

Point your project to TCastleLine2D sources. E.g. add this to CastleEngineManifest.xml:

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

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