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Improved documentation

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This commit is contained in:
Petr Sloup
2015-09-04 13:47:25 +02:00
parent 7a1533925a
commit 59bce75d2a
6 changed files with 83 additions and 52 deletions
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src/ol/reproj/reproj.js
+26 -24
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@@ -30,10 +30,10 @@ ol.reproj.browserAntialiasesClip_ = !goog.labs.userAgent.browser.isChrome() ||
* The resolution is calculated regardless on what resolutions
* are actually available in the dataset (TileGrid, Image, ...).
*
* @param {ol.proj.Projection} sourceProj
* @param {ol.proj.Projection} targetProj
* @param {ol.Coordinate} targetCenter
* @param {number} targetResolution
* @param {ol.proj.Projection} sourceProj Source projection.
* @param {ol.proj.Projection} targetProj Target projection.
* @param {ol.Coordinate} targetCenter Target center.
* @param {number} targetResolution Target resolution.
* @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.
*/
ol.reproj.calculateSourceResolution = function(sourceProj, targetProj,
@@ -73,34 +73,36 @@ ol.reproj.calculateSourceResolution = function(sourceProj, targetProj,
/**
* Enlarge the clipping triangle point by 1 pixel to ensure the edges overlap
* in order to mask gaps caused by antialiasing.
* @param {number} centroidX Centroid of the triangle.
* @param {number} centroidY Centroid of the triangle.
* @param {number} u
* @param {number} v
* @return {ol.Coordinate}
*
* @param {number} centroidX Centroid of the triangle (x coordinate in pixels).
* @param {number} centroidY Centroid of the triangle (y coordinate in pixels).
* @param {number} x X coordinate of the point (in pixels).
* @param {number} y Y coordinate of the point (in pixels).
* @return {ol.Coordinate} New point 1 px farther from the centroid.
* @private
*/
ol.reproj.enlargeClipPoint_ = function(centroidX, centroidY, u, v) {
var dX = u - centroidX, dY = v - centroidY;
ol.reproj.enlargeClipPoint_ = function(centroidX, centroidY, x, y) {
var dX = x - centroidX, dY = y - centroidY;
var distance = Math.sqrt(dX * dX + dY * dY);
return [Math.round(u + dX / distance), Math.round(v + dY / distance)];
return [Math.round(x + dX / distance), Math.round(y + dY / distance)];
};
/**
* Renders the source into the canvas based on the triangulation.
* @param {number} width
* @param {number} height
* @param {number} pixelRatio
* @param {number} sourceResolution
* @param {ol.Extent} sourceExtent
* @param {number} targetResolution
* @param {ol.Extent} targetExtent
* @param {ol.reproj.Triangulation} triangulation
* Renders the source data into new canvas based on the triangulation.
*
* @param {number} width Width of the canvas.
* @param {number} height Height of the canvas.
* @param {number} pixelRatio Pixel ratio.
* @param {number} sourceResolution Source resolution.
* @param {ol.Extent} sourceExtent Extent of the data source.
* @param {number} targetResolution Target resolution.
* @param {ol.Extent} targetExtent Target extent.
* @param {ol.reproj.Triangulation} triangulation Calculated triangulation.
* @param {Array.<{extent: ol.Extent,
* image: (HTMLCanvasElement|Image)}>} sources
* @param {boolean=} opt_renderEdges
* @return {HTMLCanvasElement}
* image: (HTMLCanvasElement|Image)}>} sources Array of sources.
* @param {boolean=} opt_renderEdges Render reprojection edges.
* @return {HTMLCanvasElement} Canvas with reprojected data.
*/
ol.reproj.render = function(width, height, pixelRatio,
sourceResolution, sourceExtent, targetResolution, targetExtent,