Babylon.js/Babylon/Culling/Octrees/babylon.octree.js

var BABYLON;
(function (BABYLON) {
    var Octree = (function () {
        function Octree(maxBlockCapacity) {
            this._maxBlockCapacity = maxBlockCapacity || 64;
            this._selection = new BABYLON.SmartArray(256);
        }
        // Methods
        Octree.prototype.update = function (worldMin, worldMax, meshes) {
            Octree._CreateBlocks(worldMin, worldMax, meshes, this._maxBlockCapacity, this);
        };

        Octree.prototype.addMesh = function (mesh) {
            for (var index = 0; index < this.blocks.length; index++) {
                var block = this.blocks[index];
                block.addMesh(mesh);
            }
        };

        Octree.prototype.select = function (frustumPlanes) {
            this._selection.reset();

            for (var index = 0; index < this.blocks.length; index++) {
                var block = this.blocks[index];
                block.select(frustumPlanes, this._selection);
            }

            return this._selection;
        };

        // Statics
        Octree._CreateBlocks = function (worldMin, worldMax, meshes, maxBlockCapacity, target) {
            target.blocks = [];
            var blockSize = new BABYLON.Vector3((worldMax.x - worldMin.x) / 2, (worldMax.y - worldMin.y) / 2, (worldMax.z - worldMin.z) / 2);

            for (var x = 0; x < 2; x++) {
                for (var y = 0; y < 2; y++) {
                    for (var z = 0; z < 2; z++) {
                        var localMin = worldMin.add(blockSize.multiplyByFloats(x, y, z));
                        var localMax = worldMin.add(blockSize.multiplyByFloats(x + 1, y + 1, z + 1));

                        var block = new BABYLON.OctreeBlock(localMin, localMax, maxBlockCapacity);
                        block.addEntries(meshes);
                        target.blocks.push(block);
                    }
                }
            }
        };
        return Octree;
    })();
    BABYLON.Octree = Octree;
})(BABYLON || (BABYLON = {}));
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