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/**
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* Indicates what happened the last time this tile was visited for selection.
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* @private
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*/
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var TileSelectionResult = {
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/**
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* There was no selection result, perhaps because the tile wasn't visited
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* last frame.
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*/
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NONE: 0,
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/**
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* This tile was deemed not visible and culled.
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*/
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CULLED: 1,
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/**
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* The tile was selected for rendering.
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*/
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RENDERED: 2,
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/**
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* This tile did not meet the required screen-space error and was refined.
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*/
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REFINED: 3,
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/**
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* This tile was originally rendered, but it got kicked out of the render list
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* in favor of an ancestor because it is not yet renderable.
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*/
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RENDERED_AND_KICKED: 2 | 4,
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/**
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* This tile was originally refined, but its rendered descendants got kicked out of the
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* render list in favor of an ancestor because it is not yet renderable.
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*/
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REFINED_AND_KICKED: 3 | 4,
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/**
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* This tile was culled because it was not visible, but it still needs to be loaded
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* and any heights on it need to be updated because the camera's position or the
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* camera's reference frame's origin falls inside this tile. Loading this tile
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* could affect the position of the camera if the camera is currently below
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* terrain or if it is tracking an object whose height is referenced to terrain.
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* And a change in the camera position may, in turn, affect what is culled.
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*/
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CULLED_BUT_NEEDED: 1 | 8,
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/**
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* Determines if a selection result indicates that this tile or its descendants were
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* kicked from the render list. In other words, if it is <code>RENDERED_AND_KICKED</code>
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* or <code>REFINED_AND_KICKED</code>.
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*
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* @param {TileSelectionResult} value The selection result to test.
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* @returns {Boolean} true if the tile was kicked, no matter if it was originally rendered or refined.
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*/
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wasKicked: function(value) {
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return value >= TileSelectionResult.RENDERED_AND_KICKED;
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},
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/**
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* Determines the original selection result prior to being kicked or CULLED_BUT_NEEDED.
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* If the tile wasn't kicked or CULLED_BUT_NEEDED, the original value is returned.
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* @param {TileSelectionResult} value The selection result.
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* @returns {TileSelectionResult} The original selection result prior to kicking.
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*/
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originalResult: function(value) {
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return value & 3;
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},
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/**
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* Converts this selection result to a kick.
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* @param {TileSelectionResult} value The original selection result.
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* @returns {TileSelectionResult} The kicked form of the selection result.
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*/
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kick: function(value) {
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return value | 4;
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}
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};
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export default TileSelectionResult;
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