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Add support for non-square tiles

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This commit is contained in:
Andreas Hocevar
2015-04-14 22:54:57 +02:00
parent 5dfa9e0a67
commit 2b75341068
19 changed files with 396 additions and 119 deletions
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19
src/ol/renderer/webgl/webgltilelayerrenderer.js
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@@ -16,6 +16,7 @@ goog.require('ol.layer.Tile');
goog.require('ol.math');
goog.require('ol.renderer.webgl.Layer');
goog.require('ol.renderer.webgl.tilelayer.shader');
goog.require('ol.size');
goog.require('ol.tilecoord');
goog.require('ol.vec.Mat4');
goog.require('ol.webgl.Buffer');
@@ -80,6 +81,12 @@ ol.renderer.webgl.TileLayer = function(mapRenderer, tileLayer) {
*/
this.renderedRevision_ = -1;
/**
* @private
* @type {ol.Size}
*/
this.tmpSize_ = [0, 0];
};
goog.inherits(ol.renderer.webgl.TileLayer, ol.renderer.webgl.Layer);
@@ -160,7 +167,8 @@ ol.renderer.webgl.TileLayer.prototype.prepareFrame =
var tilePixelSize =
tileSource.getTilePixelSize(z, frameState.pixelRatio, projection);
var pixelRatio = tilePixelSize / tileGrid.getTileSize(z);
var pixelRatio = tilePixelSize[0] /
ol.size.toSize(tileGrid.getTileSize(z), this.tmpSize_)[0];
var tilePixelResolution = tileResolution / pixelRatio;
var tileGutter = tileSource.getGutter();
@@ -186,12 +194,15 @@ ol.renderer.webgl.TileLayer.prototype.prepareFrame =
var tileRangeSize = tileRange.getSize();
var maxDimension = Math.max(
tileRangeSize[0] * tilePixelSize, tileRangeSize[1] * tilePixelSize);
tileRangeSize[0] * tilePixelSize[0],
tileRangeSize[1] * tilePixelSize[1]);
var framebufferDimension = ol.math.roundUpToPowerOfTwo(maxDimension);
var framebufferExtentDimension = tilePixelResolution * framebufferDimension;
var origin = tileGrid.getOrigin(z);
var minX = origin[0] + tileRange.minX * tilePixelSize * tilePixelResolution;
var minY = origin[1] + tileRange.minY * tilePixelSize * tilePixelResolution;
var minX = origin[0] +
tileRange.minX * tilePixelSize[0] * tilePixelResolution;
var minY = origin[1] +
tileRange.minY * tilePixelSize[1] * tilePixelResolution;
framebufferExtent = [
minX, minY,
minX + framebufferExtentDimension, minY + framebufferExtentDimension