Package org.rspeer.game.coord.shape

Class CoordAreaView

  • public class CoordAreaView
extends Object

    • Method Detail

      • getTilePolygons

        public List<Polygon> getTilePolygons​(int granularity)
        Computes screen-space polygons for every tile contained within this CoordArea.

        This method iterates through all world-tile coordinates returned by CoordArea.getCoords(), converts each tile to a CoordFine, and then uses CoordView.getPolygon(int) to project that tile (or sub-tile) into screen space.

        Granularity

        The granularity parameter is passed directly to CoordView.getPolygon(int), which controls how each tile is subdivided:
        • granularity = 1 → full tile polygon
        • granularity = 2 → 2x2
        • granularity = 4 → 4x4
        • granularity = 8 … etc.
        A higher granularity produces smaller, more precise screen-space quads inside each tile.

        Visibility

        If a tile cannot be projected to screen (e.g., off-viewport or behind camera), its polygon will have npoints == 0 and will be excluded from the result.
        Parameters:
        granularity - the subdivision factor applied to each tile when projected to screen; 1 = full tile, higher values subdivide tiles into smaller visual regions
        Returns:
        a list of non-empty Polygon instances, one for each visible tile within the area; tiles that cannot be projected are omitted

      • getOutlinePolygon

        public Polygon getOutlinePolygon()
        Computes a single screen-space polygon outlining the entire area.

        This works by:

        1. Taking the four world corners of the CoordArea
        2. For each, building a CoordFine (typically tile center)
        3. Using CoordView.getPolygon(int) for that corner tile to get its four screen-space corner points
        4. Selecting the correct vertex from each tile polygon:
          • bottom-left tile → bottom-left vertex
          • top-left tile → top-left vertex
          • top-right tile → top-right vertex
          • bottom-right tile → bottom-right vertex
        5. Connecting these four screen points into a single Polygon
        Returns:
        a polygon outlining the entire area, or an empty polygon if any of the corner polygons are off-screen / invalid