perSeriesTestCase.prototype.tearDown = function() {
};
-/**
- * @constructor
- */
-var PixelSampler = function(dygraph) {
- this.dygraph_ = dygraph;
-
- var canvas = dygraph.hidden_;
- var ctx = canvas.getContext("2d");
- this.imageData_ = ctx.getImageData(0, 0, canvas.width, canvas.height);
-};
-
-/**
- * @param {number} x The screen x-coordinate at which to sample.
- * @param {number} y The screen y-coordinate at which to sample.
- * @return {Array.<number>} a 4D array: [R, G, B, alpha]. All four values
- * are in [0, 255]. A pixel which has never been touched will be [0,0,0,0].
- */
-PixelSampler.prototype.colorAtPixel = function(x, y) {
- var i = 4 * (x + this.imageData_.width * y);
- var d = this.imageData_.data;
- return [d[i], d[i+1], d[i+2], d[i+3]];
-};
-
-/**
- * The method samples a color using data coordinates (not screen coordinates).
- * This will round your data coordinates to the nearest screen pixel before
- * sampling.
- * @param {number} x The data x-coordinate at which to sample.
- * @param {number} y The data y-coordinate at which to sample.
- * @return {Array.<number>} a 4D array: [R, G, B, alpha]. All four values
- * are in [0, 255]. A pixel which has never been touched will be [0,0,0,0].
- */
-PixelSampler.prototype.colorAtCoordinate = function(x, y) {
- var dom_xy = this.dygraph_.toDomCoords(x, y);
- return this.colorAtPixel(Math.round(dom_xy[0]), Math.round(dom_xy[1]));
-};
-
perSeriesTestCase.prototype.testPerSeriesFill = function() {
var opts = {