466 lines
13 KiB
JavaScript
466 lines
13 KiB
JavaScript
goog.require('goog.testing.jsunit');
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goog.require('ol.Coordinate');
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goog.require('ol.Extent');
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goog.require('ol.Size');
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goog.require('ol.TileCoord');
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goog.require('ol.TileGrid');
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var extent;
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var resolutions;
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var origin;
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var origins;
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var tileSize;
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function setUp() {
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resolutions = [1000, 500, 250, 100];
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extent = new ol.Extent(0, 0, 100000, 100000);
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origin = new ol.Coordinate(0, 0);
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origins = [];
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tileSize = new ol.Size(100, 100);
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}
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function testCreateValid() {
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assertNotThrows(function() {
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return new ol.TileGrid(resolutions, extent, origin, tileSize);
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});
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}
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function testCreateDuplicateResolutions() {
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var resolutions = [100, 50, 50, 25, 10];
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assertThrows(function() {
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return new ol.TileGrid(resolutions, extent, origin, tileSize);
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});
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}
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function testCreateOutOfOrderResolutions() {
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var resolutions = [100, 25, 50, 10];
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assertThrows(function() {
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return new ol.TileGrid(resolutions, extent, origin, tileSize);
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});
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}
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function testCreateOrigins() {
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var resolutions = [100, 50, 25, 10];
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var origins = [origin, origin, origin, origin];
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assertNotThrows(function() {
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return new ol.TileGrid(resolutions, extent, origins, tileSize);
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});
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}
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function testCreateTooFewOrigins() {
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var resolutions = [100, 50, 25, 10];
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var origins = [origin, origin, origin];
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assertThrows(function() {
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return new ol.TileGrid(resolutions, extent, origins, tileSize);
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});
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}
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function testCreateTooManyOrigins() {
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var resolutions = [100, 50, 25, 10];
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var origins = [origin, origin, origin, origin, origin];
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assertThrows(function() {
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return new ol.TileGrid(resolutions, extent, origins, tileSize);
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});
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}
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function testGetTileCoord() {
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origin = new ol.Coordinate(0, 0);
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var tileCoord;
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(0, 0), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(0, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(0, 100000), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(10, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(100000, 0), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(10, tileCoord.x);
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assertEquals(0, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(100000, 100000), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(10, tileCoord.x);
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assertEquals(10, tileCoord.y);
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}
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function testGetTileCoordYSouth() {
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origin = new ol.Coordinate(0, 100000);
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var tileCoord;
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(0, 0), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-10, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(0, 100000), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(0, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(100000, 0), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(10, tileCoord.x);
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assertEquals(-10, tileCoord.y);
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tileCoord = tileGrid.getTileCoordForCoordAndZ(
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new ol.Coordinate(100000, 100000), 3);
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assertEquals(3, tileCoord.z);
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assertEquals(10, tileCoord.x);
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assertEquals(0, tileCoord.y);
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}
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function testGetTileCoordForCoordAndResolution() {
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var tileSize = new ol.Size(256, 256);
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var tileGrid = new ol.TileGrid([10], extent, origin, tileSize);
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var coordinate;
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var tileCoord;
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// gets the first tile at the origin
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coordinate = new ol.Coordinate(0, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets one tile northwest of the origin
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coordinate = new ol.Coordinate(-1280, 1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(-1, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets one tile northeast of the origin
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coordinate = new ol.Coordinate(1280, 1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets one tile southeast of the origin
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coordinate = new ol.Coordinate(1280, -1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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// gets one tile southwest of the origin
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coordinate = new ol.Coordinate(-1280, -1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(-1, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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// gets the tile to the east when on the edge
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coordinate = new ol.Coordinate(2560, -1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(1, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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// gets the tile to the north when on the edge
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coordinate = new ol.Coordinate(1280, -2560);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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// pixels are top aligned to the origin
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coordinate = new ol.Coordinate(1280, -2559.999);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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// pixels are left aligned to the origin
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coordinate = new ol.Coordinate(2559.999, -1280);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 10);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-1, tileCoord.y);
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}
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function testGetTileCoordForCoordAndResolutionFractional() {
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var tileSize = new ol.Size(256, 256);
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var tileGrid = new ol.TileGrid([1 / 3], extent, origin, tileSize);
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var coordinate;
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var tileCoord;
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// These tests render at a resolution of 1. Because the layer's
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// closest resolution is 1/3, the images are scaled by 1/3.
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// In this scenario, every third tile will be one pixel wider when
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// rendered (0,0 is normal; 1,0 is wider; 0,1 is taller; etc.)
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// gets the first tile at the origin
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coordinate = new ol.Coordinate(0, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 1,0 tile at 256/3,0
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coordinate = new ol.Coordinate(256 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(1, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// still gets the 1,0 tile at 512/3,0 - wider tile
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coordinate = new ol.Coordinate(512 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(1, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 2,0 tile at 513/3,0
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coordinate = new ol.Coordinate(513 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(2, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 3,0 tile at 768/3,0
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coordinate = new ol.Coordinate(768 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(3, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 4,0 tile at 1024/3,0
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coordinate = new ol.Coordinate(1024 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(4, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// still gets the 4,0 tile at 1280/3,0 - wider tile
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coordinate = new ol.Coordinate(1280 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(4, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 5,0 tile at 1281/3,0
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coordinate = new ol.Coordinate(1281 / 3, 0);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(5, tileCoord.x);
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assertEquals(0, tileCoord.y);
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// gets the 0,1 tile at 0,-256/3
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coordinate = new ol.Coordinate(0, -256 / 3);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-2, tileCoord.y);
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// still gets the 0,1 tile at 0,-512/3 - taller tile
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coordinate = new ol.Coordinate(0, -512 / 3);
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tileCoord = tileGrid.getTileCoordForCoordAndResolution(
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coordinate, 1);
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assertEquals(0, tileCoord.z);
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assertEquals(0, tileCoord.x);
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assertEquals(-2, tileCoord.y);
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}
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function testGetTileCoordCenter() {
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var center;
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center = tileGrid.getTileCoordCenter(new ol.TileCoord(0, 0, 0));
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assertEquals(50000, center.x);
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assertEquals(50000, center.y);
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center = tileGrid.getTileCoordCenter(new ol.TileCoord(3, 0, 0));
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assertEquals(5000, center.x);
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assertEquals(5000, center.y);
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center = tileGrid.getTileCoordCenter(new ol.TileCoord(3, 9, 9));
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assertEquals(95000, center.x);
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assertEquals(95000, center.y);
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}
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function testGetTileCoordExtent() {
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var tileCoordExtent;
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tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(0, 0, 0));
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assertEquals(0, tileCoordExtent.minX);
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assertEquals(0, tileCoordExtent.minY);
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assertEquals(100000, tileCoordExtent.maxX);
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assertEquals(100000, tileCoordExtent.maxY);
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tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(3, 9, 0));
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assertEquals(90000, tileCoordExtent.minX);
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assertEquals(0, tileCoordExtent.minY);
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assertEquals(100000, tileCoordExtent.maxX);
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assertEquals(10000, tileCoordExtent.maxY);
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tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(3, 0, 9));
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assertEquals(0, tileCoordExtent.minX);
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assertEquals(90000, tileCoordExtent.minY);
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assertEquals(10000, tileCoordExtent.maxX);
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assertEquals(100000, tileCoordExtent.maxY);
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}
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function testGetExtentTileBounds() {
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var e = new ol.Extent(45000, 5000, 55000, 15000);
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var tileBounds;
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tileBounds = tileGrid.getTileBoundsForExtentAndZ(e, 0);
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assertEquals(0, tileBounds.minY);
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assertEquals(0, tileBounds.minX);
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assertEquals(0, tileBounds.maxX);
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assertEquals(0, tileBounds.maxY);
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tileBounds = tileGrid.getTileBoundsForExtentAndZ(e, 1);
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assertEquals(0, tileBounds.minX);
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assertEquals(0, tileBounds.minY);
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assertEquals(1, tileBounds.maxX);
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assertEquals(0, tileBounds.maxY);
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tileBounds = tileGrid.getTileBoundsForExtentAndZ(e, 2);
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assertEquals(1, tileBounds.minX);
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assertEquals(0, tileBounds.minY);
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assertEquals(2, tileBounds.maxX);
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assertEquals(0, tileBounds.maxY);
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tileBounds = tileGrid.getTileBoundsForExtentAndZ(e, 3);
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assertEquals(4, tileBounds.minX);
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assertEquals(0, tileBounds.minY);
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assertEquals(5, tileBounds.maxX);
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assertEquals(1, tileBounds.maxY);
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}
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function testForEachTileCoordParent() {
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var tileGrid = new ol.TileGrid(resolutions, extent, origin, tileSize);
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var zs = [], tileBoundss = [];
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tileGrid.forEachTileCoordParent(
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new ol.TileCoord(3, 7, 3),
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function(z, tileBounds) {
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zs.push(z);
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tileBoundss.push(tileBounds);
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return false;
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});
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assertEquals(3, zs.length);
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assertEquals(3, tileBoundss.length);
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assertEquals(2, zs[0]);
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assertEquals(2, tileBoundss[0].minX);
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assertEquals(1, tileBoundss[0].minY);
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assertEquals(3, tileBoundss[0].maxX);
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assertEquals(1, tileBoundss[0].maxY);
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assertEquals(1, zs[1]);
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assertEquals(1, tileBoundss[1].minX);
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assertEquals(0, tileBoundss[1].minY);
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assertEquals(1, tileBoundss[1].maxX);
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assertEquals(0, tileBoundss[1].maxY);
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assertEquals(0, zs[2]);
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assertEquals(0, tileBoundss[2].minX);
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assertEquals(0, tileBoundss[2].minY);
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assertEquals(0, tileBoundss[2].maxX);
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assertEquals(0, tileBoundss[2].maxY);
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}
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function testGetZForResolutionExact() {
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var tileGrid =
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new ol.TileGrid(resolutions, extent, origin, tileSize);
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assertEquals(0, tileGrid.getZForResolution(1000));
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assertEquals(1, tileGrid.getZForResolution(500));
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assertEquals(2, tileGrid.getZForResolution(250));
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assertEquals(3, tileGrid.getZForResolution(100));
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}
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function testGetZForResolutionApproximate() {
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var tileGrid =
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new ol.TileGrid(resolutions, extent, origin, tileSize);
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assertEquals(0, tileGrid.getZForResolution(2000));
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assertEquals(0, tileGrid.getZForResolution(1000));
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assertEquals(0, tileGrid.getZForResolution(900));
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assertEquals(1, tileGrid.getZForResolution(750));
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assertEquals(1, tileGrid.getZForResolution(625));
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assertEquals(1, tileGrid.getZForResolution(500));
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assertEquals(1, tileGrid.getZForResolution(475));
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assertEquals(2, tileGrid.getZForResolution(375));
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assertEquals(2, tileGrid.getZForResolution(250));
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assertEquals(2, tileGrid.getZForResolution(200));
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assertEquals(3, tileGrid.getZForResolution(125));
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assertEquals(3, tileGrid.getZForResolution(100));
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assertEquals(3, tileGrid.getZForResolution(50));
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}
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