CODEWITHSUNDEEP
javaandroidgraphicslibgdxshapes
Lucas Sousa
Lucas Sousa

Reputation: 352

How to draw custom shapes in LibGDX by path?

Consider I have to create a custom/complex shape composed by some elements, inluding lines, rects and/or curves (bezier, cubic...). In standard Java we have the Path2D element, which allows us to perform some of those elements by going through predefined points. The following method demonstrates a simple approach to return a path by some points:

    private Path2D aShape(double x, double y) {
        ArrayList<double[]> points = new ArrayList<>(
                Arrays.asList(
                        new double[]{x, y},
                        new double[]{x - (L * 0.2588190451), y - (L * 0.4482877361)},
                        new double[]{x, y - (L * 0.7071067812)},
                        new double[]{x + (L * 0.2588190451), y - (L * 0.4482877361)}));

        Path2D path = new Path2D.Double();
        path.moveTo(points.get(0)[0], points.get(0)[1]);
        for (int i = 1; i < points.size(); ++i) {
            //line or anything avaliable...
            path.lineTo(points.get(i)[0], points.get(i)[1]);
        }
        path.closePath();

        return path;
    }

After, this method can be drawn by a Graphics2D. However, I din't found (yet, at least) any element that works in this way or even a element that supplies functions to draw curves or something like that, as Path2D, in LibGDX library.

For my tests I'm trying to draw a music treble_clef by following path, but didn't found a trick to do that.

What could be a approach to perform custom shape drawing in LibGDX by a passed path?

Upvotes: 0

Views: 231

Answers (1)

TMTH
TMTH

Reputation: 91

You should use ShapeRenderer. It has methods for drawing lines, arcs, rects an so on.

Docs are here,

Upvotes: 2

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