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metatile.test.js
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metatile.test.js
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var assert = require('assert');
var render = require('../lib/render');
var FULL = 20037508.342789244;
var HALF = 0;
var QUAD = 10018754.171394622;
var QUADX = 10018754.17139462;
exports['test metatile calculation z=0'] = function(beforeExit) {
var tile = {
width: 256, height: 256,
tiles: [ [0, 0, 0] ],
bbox: [ -FULL, -FULL, FULL, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 0, x: 0, y: 0, metatile: 1 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 0, x: 0, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 0, x: 0, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 0, x: 0, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 0, x: 0, y: 0, metatile: 13 }), tile);
};
exports['test metatile calculation z=1'] = function(beforeExit) {
// metatile: 1
{
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [1, 0, 0] ],
bbox: [ -FULL, HALF, HALF, FULL ],
x: 0, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [1, 0, 1] ],
bbox: [ -FULL, -FULL, HALF, HALF ],
x: 0, y: 1
});
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [1, 1, 0] ],
bbox: [ HALF, HALF, FULL, FULL ],
x: 1, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [1, 1, 1] ],
bbox: [ HALF, -FULL, FULL, HALF ],
x: 1, y: 1
});
}
var tile = {
width: 512,
height: 512,
tiles: [ [1, 0, 0], [1, 0, 1], [1, 1, 0], [1, 1, 1] ],
bbox: [ -FULL, -FULL, FULL, FULL ],
x: 0, y: 0
};
// metatile: 2
{
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 1, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 1, metatile: 2 }), tile);
}
// metatile: 3
{
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 1, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 1, metatile: 3 }), tile);
}
// metatile: 4
{
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 1, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 1, metatile: 4 }), tile);
}
// metatile: 13
{
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 0, y: 1, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 1, x: 1, y: 1, metatile: 13 }), tile);
}
};
exports['test metatile calculation z=2'] = function(beforeExit) {
// metatile: 1
{
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 0, 0] ],
bbox: [ -FULL, QUAD, -QUAD, FULL ],
x: 0, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 0, 1] ],
bbox: [ -FULL, HALF, -QUAD, QUAD ],
x: 0, y: 1
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 0, 2] ],
bbox: [ -FULL, -QUADX, -QUAD, HALF ],
x: 0, y: 2
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 0, 3] ],
bbox: [ -FULL, -FULL, -QUAD, -QUADX ],
x: 0, y: 3
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 1, 0] ],
bbox: [ -QUAD, QUAD, HALF, FULL ],
x: 1, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 1, 1] ],
bbox: [ -QUAD, HALF, HALF, QUAD ],
x: 1, y: 1
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 1, 2] ],
bbox: [ -QUAD, -QUADX, HALF, HALF ],
x: 1, y: 2
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 1, 3] ],
bbox: [ -QUAD, -FULL, HALF, -QUADX ],
x: 1, y: 3
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 2, 0] ],
bbox: [ HALF, QUAD, QUADX, FULL ],
x: 2, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 2, 1] ],
bbox: [ HALF, HALF, QUADX, QUAD ],
x: 2, y: 1
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 2, 2] ],
bbox: [ HALF, -QUADX, QUADX, HALF ],
x: 2, y: 2
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 2, 3] ],
bbox: [ HALF, -FULL, QUADX, -QUADX ],
x: 2, y: 3
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 3, 0] ],
bbox: [ QUADX, QUAD, FULL, FULL ],
x: 3, y: 0
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 3, 1] ],
bbox: [ QUADX, HALF, FULL, QUAD ],
x: 3, y: 1
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 3, 2] ],
bbox: [ QUADX, -QUADX, FULL, HALF ],
x: 3, y: 2
});
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 1 }), {
width: 256,
height: 256,
tiles: [ [2, 3, 3] ],
bbox: [ QUADX, -FULL, FULL, -QUADX ],
x: 3, y: 3
});
}
// metatile: 2
{
var tile = {
width: 512, height: 512,
tiles: [ [2, 0, 0], [2, 0, 1], [2, 1, 0], [2, 1, 1] ],
bbox: [ -FULL, HALF, -HALF, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 2 }), tile);
var tile = {
width: 512, height: 512,
tiles: [ [2, 2, 0], [2, 2, 1], [2, 3, 0], [2, 3, 1] ],
bbox: [ HALF, HALF, FULL, FULL ],
x: 2, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 2 }), tile);
var tile = {
width: 512, height: 512,
tiles: [ [2, 0, 2], [2, 0, 3], [2, 1, 2], [2, 1, 3] ],
bbox: [ -FULL, -FULL, -HALF, HALF ],
x: 0, y: 2
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 2 }), tile);
var tile = {
width: 512, height: 512,
tiles: [ [2, 2, 2], [2, 2, 3], [2, 3, 2], [2, 3, 3] ],
bbox: [ HALF, -FULL, FULL, HALF ],
x: 2, y: 2
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 2 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 2 }), tile);
}
// metatile: 3
{
var tile = {
width: 768, height: 768,
tiles: [ [2, 0, 0], [2, 0, 1], [2, 0, 2], [2, 1, 0], [2, 1, 1], [2, 1, 2], [2, 2, 0], [2, 2, 1], [2, 2, 2] ],
bbox: [ -FULL, -QUADX, QUADX, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 3 }), tile);
var tile = {
width: 768, height: 256,
tiles: [ [2, 0, 3], [2, 1, 3], [2, 2, 3] ],
bbox: [ -FULL, -FULL, QUADX, -QUADX ],
x: 0, y: 3
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 3 }), tile);
var tile = {
width: 256, height: 768,
tiles: [ [2, 3, 0], [2, 3, 1], [2, 3, 2] ],
bbox: [ QUADX, -QUADX, FULL, FULL ],
x: 3, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 3 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 3 }), {
width: 256, height: 256,
tiles: [ [2, 3, 3] ],
bbox: [ QUADX, -FULL, FULL, -QUADX ],
x: 3, y: 3
});
}
// metatile: 4
{
var tile = {
width: 1024, height: 1024,
tiles: [ [2, 0, 0], [2, 0, 1], [2, 0, 2], [2, 0, 3], [2, 1, 0], [2, 1, 1], [2, 1, 2], [2, 1, 3], [2, 2, 0], [2, 2, 1], [2, 2, 2], [2, 2, 3], [2, 3, 0], [2, 3, 1], [2, 3, 2], [2, 3, 3]],
bbox: [ -FULL, -FULL, FULL, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 4 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 4 }), tile);
}
// metatile: 5
{
var tile = {
width: 1024, height: 1024,
tiles: [ [2, 0, 0], [2, 0, 1], [2, 0, 2], [2, 0, 3], [2, 1, 0], [2, 1, 1], [2, 1, 2], [2, 1, 3], [2, 2, 0], [2, 2, 1], [2, 2, 2], [2, 2, 3], [2, 3, 0], [2, 3, 1], [2, 3, 2], [2, 3, 3]],
bbox: [ -FULL, -FULL, FULL, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 5 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 5 }), tile);
}
// metatile: 13
{
var tile = {
width: 1024, height: 1024,
tiles: [ [2, 0, 0], [2, 0, 1], [2, 0, 2], [2, 0, 3], [2, 1, 0], [2, 1, 1], [2, 1, 2], [2, 1, 3], [2, 2, 0], [2, 2, 1], [2, 2, 2], [2, 2, 3], [2, 3, 0], [2, 3, 1], [2, 3, 2], [2, 3, 3]],
bbox: [ -FULL, -FULL, FULL, FULL ],
x: 0, y: 0
};
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 1, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 2, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 0, y: 3, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 1, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 2, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 1, y: 3, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 1, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 2, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 2, y: 3, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 0, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 1, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 2, metatile: 13 }), tile);
assert.deepEqual(render.calculateMetatile({ z: 2, x: 3, y: 3, metatile: 13 }), tile);
}
};