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"use strict";
var vows = require("vows"),
load = require("../load"),
assert = require("assert"),
jsdom = require("jsdom");
var suite = vows.describe("mp.dye");
var dyeString = "R:#ede5b2,fff7bf;G:#cccccc,ffffff";
var dyeData = {
"R": [
[0xed, 0xe5, 0xb2],
[0xff, 0xf7, 0xbf]
],
"G": [
[0xcc, 0xcc, 0xcc],
[0xff, 0xff, 0xff]
]
};
function assertImageDataEqual(input, expected, actual, width) {
assert.equal(actual.length, expected.length, "expected same " + expected.length + " pixel components, found " + actual.length);
for (var i = 0; i != actual.length; i += 4) {
var p = i / 4;
var y = Math.floor(p / width);
var x = p - y * width;
var msg = "At (" + x + "," + y + "): "
+ "Input rgba(" + input [i ] + "," + input [i + 1] + "," + input [i + 2] + "," + input [i + 3] + ") "
+ "should dye to rgba(" + expected[i ] + "," + expected[i + 1] + "," + expected[i + 2] + "," + expected[i + 3] + "); "
+ "found rgba(" + actual [i ] + "," + actual [i + 1] + "," + actual [i + 2] + "," + actual [i + 3] + ")";
assert.equal(actual[i ], expected[i ], msg);
assert.equal(actual[i + 1], expected[i + 1], msg);
assert.equal(actual[i + 2], expected[i + 2], msg);
assert.equal(actual[i + 3], expected[i + 3], msg);
}
}
function unshiftLoadImageBind(url, tests) {
tests.topic = function() {
var mp = arguments[arguments.length - 1];
var tester = this;
var args = arguments;
mp.resource.loadImage(url, function(err, data) {
if (err) {
throw new Error("Error loading '" + url + "': " + data);
}
tester.callback.bind(tester, err, data).apply(tester, args);
});
};
return tests;
}
function testDye(err, dyed, dyeable, mp) {
var input = dyeable.data;
var expected = dyed.data;
var actual = new Uint8ClampedArray(input);
mp.dye.dyeImage(actual, dyeData);
assertImageDataEqual(input, expected, actual, dyed.width);
}
suite.addBatch({
"The manaportal dye": {
topic: load("mp/dye", "mp/resource").expression("mp").document(),
"parseDyeString": {
"Extracts the dye channel data from the dyestring": function(mp) {
assert.equal(mp.dye.parseDyeString(dyeString), dyeData);
}
},
"dyeImage": {
"with the big recolorable cake": unshiftLoadImageBind("test/data/bigcake.png", {
"to the big white cake dyed by TMWW": unshiftLoadImageBind("test/data/whitecake.png", {
"dyes correctly when given the correct dye data": testDye
})
}),
"with a gradient of all channels with all intensities": unshiftLoadImageBind("test/data/gradient.png", {
"to a gradient of all channels with all intensities dyed by TMWW with the white cake dye": unshiftLoadImageBind("test/data/gradient-whitecakedye.png", {
"dyes correctly when given the correct dye data": testDye
})
})
}
}
});
suite.export(module);
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