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| goog.provide('ol.render.webgl.Immediate');
goog.require('goog.asserts');
goog.require('ol.extent');
goog.require('ol.geom.GeometryType');
goog.require('ol.render.VectorContext');
goog.require('ol.render.webgl.ImageReplay');
goog.require('ol.render.webgl.ReplayGroup');
/**
* @constructor
* @extends {ol.render.VectorContext}
* @param {ol.webgl.Context} context Context.
* @param {ol.Coordinate} center Center.
* @param {number} resolution Resolution.
* @param {number} rotation Rotation.
* @param {ol.Size} size Size.
* @param {ol.Extent} extent Extent.
* @param {number} pixelRatio Pixel ratio.
* @struct
*/
ol.render.webgl.Immediate = function(context, center, resolution, rotation, size, extent, pixelRatio) {
goog.base(this);
/**
* @private
*/
this.context_ = context;
/**
* @private
*/
this.center_ = center;
/**
* @private
*/
this.extent_ = extent;
/**
* @private
*/
this.pixelRatio_ = pixelRatio;
/**
* @private
*/
this.size_ = size;
/**
* @private
*/
this.rotation_ = rotation;
/**
* @private
*/
this.resolution_ = resolution;
/**
* @private
* @type {ol.style.Image}
*/
this.imageStyle_ = null;
};
goog.inherits(ol.render.webgl.Immediate, ol.render.VectorContext);
/**
* Set the rendering style. Note that since this is an immediate rendering API,
* any `zIndex` on the provided style will be ignored.
*
* @param {ol.style.Style} style The rendering style.
* @api
*/
ol.render.webgl.Immediate.prototype.setStyle = function(style) {
this.setImageStyle(style.getImage());
};
/**
* Render a geometry into the canvas. Call
* {@link ol.render.webgl.Immediate#setStyle} first to set the rendering style.
*
* @param {ol.geom.Geometry|ol.render.Feature} geometry The geometry to render.
* @api
*/
ol.render.webgl.Immediate.prototype.drawGeometry = function(geometry) {
var type = geometry.getType();
switch (type) {
case ol.geom.GeometryType.POINT:
this.drawPoint(/** @type {ol.geom.Point} */ (geometry), null);
break;
case ol.geom.GeometryType.MULTI_POINT:
this.drawMultiPoint(/** @type {ol.geom.MultiPoint} */ (geometry), null);
break;
case ol.geom.GeometryType.GEOMETRY_COLLECTION:
this.drawGeometryCollection(/** @type {ol.geom.GeometryCollection} */ (geometry), null);
break;
default:
goog.asserts.fail('Unsupported geometry type: ' + type);
}
};
/**
* @inheritDoc
* @api
*/
ol.render.webgl.Immediate.prototype.drawFeature = function(feature, style) {
var geometry = style.getGeometryFunction()(feature);
if (!geometry ||
!ol.extent.intersects(this.extent_, geometry.getExtent())) {
return;
}
this.setStyle(style);
goog.asserts.assert(geometry, 'geometry must be truthy');
this.drawGeometry(geometry);
};
/**
* @inheritDoc
*/
ol.render.webgl.Immediate.prototype.drawGeometryCollection = function(geometry, data) {
var geometries = geometry.getGeometriesArray();
var i, ii;
for (i = 0, ii = geometries.length; i < ii; ++i) {
this.drawGeometry(geometries[i]);
}
};
/**
* @inheritDoc
*/
ol.render.webgl.Immediate.prototype.drawPoint = function(geometry, data) {
var context = this.context_;
var replayGroup = new ol.render.webgl.ReplayGroup(1, this.extent_);
var replay = /** @type {ol.render.webgl.ImageReplay} */ (
replayGroup.getReplay(0, ol.render.ReplayType.IMAGE));
replay.setImageStyle(this.imageStyle_);
replay.drawPoint(geometry, data);
replay.finish(context);
// default colors
var opacity = 1;
var skippedFeatures = {};
var featureCallback;
var oneByOne = false;
replay.replay(this.context_, this.center_, this.resolution_, this.rotation_,
this.size_, this.pixelRatio_, opacity, skippedFeatures, featureCallback,
oneByOne);
replay.getDeleteResourcesFunction(context)();
};
/**
* @inheritDoc
*/
ol.render.webgl.Immediate.prototype.drawMultiPoint = function(geometry, data) {
var context = this.context_;
var replayGroup = new ol.render.webgl.ReplayGroup(1, this.extent_);
var replay = /** @type {ol.render.webgl.ImageReplay} */ (
replayGroup.getReplay(0, ol.render.ReplayType.IMAGE));
replay.setImageStyle(this.imageStyle_);
replay.drawMultiPoint(geometry, data);
replay.finish(context);
var opacity = 1;
var skippedFeatures = {};
var featureCallback;
var oneByOne = false;
replay.replay(this.context_, this.center_, this.resolution_, this.rotation_,
this.size_, this.pixelRatio_, opacity, skippedFeatures, featureCallback,
oneByOne);
replay.getDeleteResourcesFunction(context)();
};
/**
* @inheritDoc
*/
ol.render.webgl.Immediate.prototype.setImageStyle = function(imageStyle) {
this.imageStyle_ = imageStyle;
};
|