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根据中心层级判断是否获取下级Tile。

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tengge1 2019-04-05 11:04:18 +08:00
parent 74ba71b8ea
commit c731700733
1 changed files with 4 additions and 32 deletions
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36
ShadowEditor.Web/src/gis/tile/SphereTileCreator.js
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@ -30,7 +30,7 @@ SphereTileCreator.prototype.get = function () {
MathUtils.xyzToLonlat(this.camera.position, this._center);
this._centerZoom = MathUtils.altToZoom(this.camera.position.length() - WGS84.a);
this._centerZoom = ~~MathUtils.altToZoom(this.camera.position.length() - WGS84.a);
this._projScreenMatrix.multiplyMatrices(this.camera.projectionMatrix, this.camera.matrixWorldInverse);
this._frustum.setFromMatrix(this._projScreenMatrix);
@ -61,9 +61,7 @@ SphereTileCreator.prototype.fork = function (x, y, z) {
this.fork(x * 2, y * 2 + 1, z + 1);
this.fork(x * 2 + 1, y * 2 + 1, z + 1);
} else {
// if (tile.x === 1 && tile.y === 0 && tile.z === 1) {
this.tiles.push(tile);
// }
}
};
@ -75,16 +73,10 @@ SphereTileCreator.prototype.canFork = function () {
var xyz = new THREE.Vector3();
return function (tile) {
// if (tile.z > this._centerZoom) { // this._centerZoom: { min: 0 }
// return false;
// }
if (tile.z === 0) {
return true;
if (tile.z > this._centerZoom) { // this._centerZoom: { min: 0 }
return false;
}
return false;
// 判断tile是否在视野范围内
// var intersect = false;
@ -92,27 +84,7 @@ SphereTileCreator.prototype.canFork = function () {
// return false;
// return true;
// var frustum = this._frustum;
// if (tile.z >= 5) {
// return false;
// }
// if (tile._aabb.containsPoint(this._center)) {
// return true;
// } else {
// return false;
// }
// MathUtils._lonlatToXYZ(tile._center, xyz);
// var distance = this.camera.position.distanceTo(xyz);
// var zoom = MathUtils.altToZoom(distance) + 2;
// return tile.z <= zoom;
return true;
};
}();