Examples of toxi.geom.PointQuadtree

toxi.geom.PointQuadtree
Implements a spatial subdivision tree to work efficiently with large numbers of 2D particles. This quadtree can only be used for particle type objects and does NOT support 2D mesh geometry as other forms of quadtree might do. For further reference also see the QuadtreeDemo in the /examples folder.

                new Vec3D(50, 50, 50)));
        assertEquals(points.size() == 3, true);
    }


    public void testQuadtree() {
        PointQuadtree t = new PointQuadtree(null, 0, 0, 100, 100);
        assertEquals(t.index(new Vec2D(0, 0)), true);
        assertEquals(t.index(new Vec2D(1, 1)), true);
        assertEquals(t.index(new Vec2D(4, 0)), true);
        PointQuadtree leaf1 = t.findNode(new Vec2D(0, 0));
        PointQuadtree leaf2 = t.findNode(new Vec2D(4, 0));
        assertNotSame(leaf1, leaf2);
        List<Vec2D> points = t.itemsWithinRect(new Rect(0, 0, 2, 2), null);
        assertEquals(2, points.size());
    }

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        gfx = new ToxiclibsSupport(this);
        physics = new VerletPhysics2D();
        physics.setDrag(0.1f);
        physics.setWorldBounds(new Rect(0, 0, width, height));
        physics.addBehavior(new GravityBehavior2D(new Vec2D(0, 0.15f)));
        physics.setIndex(new PointQuadtree(null, 0, 0, width + 1, height + 1));
        // physics.setIndex(new SpatialBins<Vec2D>(0, width, 80,
        // new CoordinateExtractor<Vec2D>() {
        //
        // public final float coordinate(Vec2D p) {
        // return p.x;

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    }


    public void setup() {
        size(1280, 720, OPENGL);
        gfx = new ToxiclibsSupport(this);
        tree = new PointQuadtree(null, 0, 0, width, height);
        for (int i = 0; i < 5000; i++) {
            tree.index(new Vec2D(random(width), random(height)));
        }
    }

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Related Classes of toxi.geom.PointQuadtree

toxi.test.AttractTest2D

toxi.test.geom.TreeTest

toxi.test.QuadtreeTest

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