1156 lines
33 KiB
JavaScript
1156 lines
33 KiB
JavaScript
/**
|
|
* @module ol/render/canvas/Immediate
|
|
*/
|
|
// FIXME test, especially polygons with holes and multipolygons
|
|
// FIXME need to handle large thick features (where pixel size matters)
|
|
// FIXME add offset and end to ol/geom/flat/transform~transform2D?
|
|
|
|
import VectorContext from '../VectorContext.js';
|
|
import {asColorLike} from '../../colorlike.js';
|
|
import {
|
|
compose as composeTransform,
|
|
create as createTransform,
|
|
} from '../../transform.js';
|
|
import {
|
|
defaultFillStyle,
|
|
defaultFont,
|
|
defaultLineCap,
|
|
defaultLineDash,
|
|
defaultLineDashOffset,
|
|
defaultLineJoin,
|
|
defaultLineWidth,
|
|
defaultMiterLimit,
|
|
defaultStrokeStyle,
|
|
defaultTextAlign,
|
|
defaultTextBaseline,
|
|
} from '../canvas.js';
|
|
import {equals} from '../../array.js';
|
|
import {intersects} from '../../extent.js';
|
|
import {transform2D} from '../../geom/flat/transform.js';
|
|
import {transformGeom2D} from '../../geom/SimpleGeometry.js';
|
|
|
|
/**
|
|
* @classdesc
|
|
* A concrete subclass of {@link module:ol/render/VectorContext~VectorContext} that implements
|
|
* direct rendering of features and geometries to an HTML5 Canvas context.
|
|
* Instances of this class are created internally by the library and
|
|
* provided to application code as vectorContext member of the
|
|
* {@link module:ol/render/Event~RenderEvent} object associated with postcompose, precompose and
|
|
* render events emitted by layers and maps.
|
|
*/
|
|
class CanvasImmediateRenderer extends VectorContext {
|
|
/**
|
|
* @param {CanvasRenderingContext2D} context Context.
|
|
* @param {number} pixelRatio Pixel ratio.
|
|
* @param {import("../../extent.js").Extent} extent Extent.
|
|
* @param {import("../../transform.js").Transform} transform Transform.
|
|
* @param {number} viewRotation View rotation.
|
|
* @param {number} [squaredTolerance] Optional squared tolerance for simplification.
|
|
* @param {import("../../proj.js").TransformFunction} [userTransform] Transform from user to view projection.
|
|
*/
|
|
constructor(
|
|
context,
|
|
pixelRatio,
|
|
extent,
|
|
transform,
|
|
viewRotation,
|
|
squaredTolerance,
|
|
userTransform
|
|
) {
|
|
super();
|
|
|
|
/**
|
|
* @private
|
|
* @type {CanvasRenderingContext2D}
|
|
*/
|
|
this.context_ = context;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.pixelRatio_ = pixelRatio;
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../extent.js").Extent}
|
|
*/
|
|
this.extent_ = extent;
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../transform.js").Transform}
|
|
*/
|
|
this.transform_ = transform;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.viewRotation_ = viewRotation;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.squaredTolerance_ = squaredTolerance;
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../proj.js").TransformFunction}
|
|
*/
|
|
this.userTransform_ = userTransform;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").FillState}
|
|
*/
|
|
this.contextFillState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").StrokeState}
|
|
*/
|
|
this.contextStrokeState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").TextState}
|
|
*/
|
|
this.contextTextState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").FillState}
|
|
*/
|
|
this.fillState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").StrokeState}
|
|
*/
|
|
this.strokeState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}
|
|
*/
|
|
this.image_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageAnchorX_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageAnchorY_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageHeight_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageOpacity_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageOriginX_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageOriginY_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {boolean}
|
|
*/
|
|
this.imageRotateWithView_ = false;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageRotation_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../size.js").Size}
|
|
*/
|
|
this.imageScale_ = [0, 0];
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.imageWidth_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {string}
|
|
*/
|
|
this.text_ = '';
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.textOffsetX_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.textOffsetY_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {boolean}
|
|
*/
|
|
this.textRotateWithView_ = false;
|
|
|
|
/**
|
|
* @private
|
|
* @type {number}
|
|
*/
|
|
this.textRotation_ = 0;
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../size.js").Size}
|
|
*/
|
|
this.textScale_ = [0, 0];
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").FillState}
|
|
*/
|
|
this.textFillState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").StrokeState}
|
|
*/
|
|
this.textStrokeState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {?import("../canvas.js").TextState}
|
|
*/
|
|
this.textState_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {Array<number>}
|
|
*/
|
|
this.pixelCoordinates_ = [];
|
|
|
|
/**
|
|
* @private
|
|
* @type {import("../../transform.js").Transform}
|
|
*/
|
|
this.tmpLocalTransform_ = createTransform();
|
|
}
|
|
|
|
/**
|
|
* @param {Array<number>} flatCoordinates Flat coordinates.
|
|
* @param {number} offset Offset.
|
|
* @param {number} end End.
|
|
* @param {number} stride Stride.
|
|
* @private
|
|
*/
|
|
drawImages_(flatCoordinates, offset, end, stride) {
|
|
if (!this.image_) {
|
|
return;
|
|
}
|
|
const pixelCoordinates = transform2D(
|
|
flatCoordinates,
|
|
offset,
|
|
end,
|
|
stride,
|
|
this.transform_,
|
|
this.pixelCoordinates_
|
|
);
|
|
const context = this.context_;
|
|
const localTransform = this.tmpLocalTransform_;
|
|
const alpha = context.globalAlpha;
|
|
if (this.imageOpacity_ != 1) {
|
|
context.globalAlpha = alpha * this.imageOpacity_;
|
|
}
|
|
let rotation = this.imageRotation_;
|
|
if (this.imageRotateWithView_) {
|
|
rotation += this.viewRotation_;
|
|
}
|
|
for (let i = 0, ii = pixelCoordinates.length; i < ii; i += 2) {
|
|
const x = pixelCoordinates[i] - this.imageAnchorX_;
|
|
const y = pixelCoordinates[i + 1] - this.imageAnchorY_;
|
|
if (
|
|
rotation !== 0 ||
|
|
this.imageScale_[0] != 1 ||
|
|
this.imageScale_[1] != 1
|
|
) {
|
|
const centerX = x + this.imageAnchorX_;
|
|
const centerY = y + this.imageAnchorY_;
|
|
composeTransform(
|
|
localTransform,
|
|
centerX,
|
|
centerY,
|
|
1,
|
|
1,
|
|
rotation,
|
|
-centerX,
|
|
-centerY
|
|
);
|
|
context.setTransform.apply(context, localTransform);
|
|
context.translate(centerX, centerY);
|
|
context.scale(this.imageScale_[0], this.imageScale_[1]);
|
|
context.drawImage(
|
|
this.image_,
|
|
this.imageOriginX_,
|
|
this.imageOriginY_,
|
|
this.imageWidth_,
|
|
this.imageHeight_,
|
|
-this.imageAnchorX_,
|
|
-this.imageAnchorY_,
|
|
this.imageWidth_,
|
|
this.imageHeight_
|
|
);
|
|
context.setTransform(1, 0, 0, 1, 0, 0);
|
|
} else {
|
|
context.drawImage(
|
|
this.image_,
|
|
this.imageOriginX_,
|
|
this.imageOriginY_,
|
|
this.imageWidth_,
|
|
this.imageHeight_,
|
|
x,
|
|
y,
|
|
this.imageWidth_,
|
|
this.imageHeight_
|
|
);
|
|
}
|
|
}
|
|
if (this.imageOpacity_ != 1) {
|
|
context.globalAlpha = alpha;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Array<number>} flatCoordinates Flat coordinates.
|
|
* @param {number} offset Offset.
|
|
* @param {number} end End.
|
|
* @param {number} stride Stride.
|
|
* @private
|
|
*/
|
|
drawText_(flatCoordinates, offset, end, stride) {
|
|
if (!this.textState_ || this.text_ === '') {
|
|
return;
|
|
}
|
|
if (this.textFillState_) {
|
|
this.setContextFillState_(this.textFillState_);
|
|
}
|
|
if (this.textStrokeState_) {
|
|
this.setContextStrokeState_(this.textStrokeState_);
|
|
}
|
|
this.setContextTextState_(this.textState_);
|
|
const pixelCoordinates = transform2D(
|
|
flatCoordinates,
|
|
offset,
|
|
end,
|
|
stride,
|
|
this.transform_,
|
|
this.pixelCoordinates_
|
|
);
|
|
const context = this.context_;
|
|
let rotation = this.textRotation_;
|
|
if (this.textRotateWithView_) {
|
|
rotation += this.viewRotation_;
|
|
}
|
|
for (; offset < end; offset += stride) {
|
|
const x = pixelCoordinates[offset] + this.textOffsetX_;
|
|
const y = pixelCoordinates[offset + 1] + this.textOffsetY_;
|
|
if (
|
|
rotation !== 0 ||
|
|
this.textScale_[0] != 1 ||
|
|
this.textScale_[1] != 1
|
|
) {
|
|
context.translate(x - this.textOffsetX_, y - this.textOffsetY_);
|
|
context.rotate(rotation);
|
|
context.translate(this.textOffsetX_, this.textOffsetY_);
|
|
context.scale(this.textScale_[0], this.textScale_[1]);
|
|
if (this.textStrokeState_) {
|
|
context.strokeText(this.text_, 0, 0);
|
|
}
|
|
if (this.textFillState_) {
|
|
context.fillText(this.text_, 0, 0);
|
|
}
|
|
context.setTransform(1, 0, 0, 1, 0, 0);
|
|
} else {
|
|
if (this.textStrokeState_) {
|
|
context.strokeText(this.text_, x, y);
|
|
}
|
|
if (this.textFillState_) {
|
|
context.fillText(this.text_, x, y);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Array<number>} flatCoordinates Flat coordinates.
|
|
* @param {number} offset Offset.
|
|
* @param {number} end End.
|
|
* @param {number} stride Stride.
|
|
* @param {boolean} close Close.
|
|
* @private
|
|
* @return {number} end End.
|
|
*/
|
|
moveToLineTo_(flatCoordinates, offset, end, stride, close) {
|
|
const context = this.context_;
|
|
const pixelCoordinates = transform2D(
|
|
flatCoordinates,
|
|
offset,
|
|
end,
|
|
stride,
|
|
this.transform_,
|
|
this.pixelCoordinates_
|
|
);
|
|
context.moveTo(pixelCoordinates[0], pixelCoordinates[1]);
|
|
let length = pixelCoordinates.length;
|
|
if (close) {
|
|
length -= 2;
|
|
}
|
|
for (let i = 2; i < length; i += 2) {
|
|
context.lineTo(pixelCoordinates[i], pixelCoordinates[i + 1]);
|
|
}
|
|
if (close) {
|
|
context.closePath();
|
|
}
|
|
return end;
|
|
}
|
|
|
|
/**
|
|
* @param {Array<number>} flatCoordinates Flat coordinates.
|
|
* @param {number} offset Offset.
|
|
* @param {Array<number>} ends Ends.
|
|
* @param {number} stride Stride.
|
|
* @private
|
|
* @return {number} End.
|
|
*/
|
|
drawRings_(flatCoordinates, offset, ends, stride) {
|
|
for (let i = 0, ii = ends.length; i < ii; ++i) {
|
|
offset = this.moveToLineTo_(
|
|
flatCoordinates,
|
|
offset,
|
|
ends[i],
|
|
stride,
|
|
true
|
|
);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
/**
|
|
* Render a circle geometry into the canvas. Rendering is immediate and uses
|
|
* the current fill and stroke styles.
|
|
*
|
|
* @param {import("../../geom/Circle.js").default} geometry Circle geometry.
|
|
* @api
|
|
*/
|
|
drawCircle(geometry) {
|
|
if (!intersects(this.extent_, geometry.getExtent())) {
|
|
return;
|
|
}
|
|
if (this.fillState_ || this.strokeState_) {
|
|
if (this.fillState_) {
|
|
this.setContextFillState_(this.fillState_);
|
|
}
|
|
if (this.strokeState_) {
|
|
this.setContextStrokeState_(this.strokeState_);
|
|
}
|
|
const pixelCoordinates = transformGeom2D(
|
|
geometry,
|
|
this.transform_,
|
|
this.pixelCoordinates_
|
|
);
|
|
const dx = pixelCoordinates[2] - pixelCoordinates[0];
|
|
const dy = pixelCoordinates[3] - pixelCoordinates[1];
|
|
const radius = Math.sqrt(dx * dx + dy * dy);
|
|
const context = this.context_;
|
|
context.beginPath();
|
|
context.arc(
|
|
pixelCoordinates[0],
|
|
pixelCoordinates[1],
|
|
radius,
|
|
0,
|
|
2 * Math.PI
|
|
);
|
|
if (this.fillState_) {
|
|
context.fill();
|
|
}
|
|
if (this.strokeState_) {
|
|
context.stroke();
|
|
}
|
|
}
|
|
if (this.text_ !== '') {
|
|
this.drawText_(geometry.getCenter(), 0, 2, 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the rendering style. Note that since this is an immediate rendering API,
|
|
* any `zIndex` on the provided style will be ignored.
|
|
*
|
|
* @param {import("../../style/Style.js").default} style The rendering style.
|
|
* @api
|
|
*/
|
|
setStyle(style) {
|
|
this.setFillStrokeStyle(style.getFill(), style.getStroke());
|
|
this.setImageStyle(style.getImage());
|
|
this.setTextStyle(style.getText());
|
|
}
|
|
|
|
/**
|
|
* @param {import("../../transform.js").Transform} transform Transform.
|
|
*/
|
|
setTransform(transform) {
|
|
this.transform_ = transform;
|
|
}
|
|
|
|
/**
|
|
* Render a geometry into the canvas. Call
|
|
* {@link module:ol/render/canvas/Immediate~CanvasImmediateRenderer#setStyle renderer.setStyle()} first to set the rendering style.
|
|
*
|
|
* @param {import("../../geom/Geometry.js").default|import("../Feature.js").default} geometry The geometry to render.
|
|
* @api
|
|
*/
|
|
drawGeometry(geometry) {
|
|
const type = geometry.getType();
|
|
switch (type) {
|
|
case 'Point':
|
|
this.drawPoint(
|
|
/** @type {import("../../geom/Point.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
case 'LineString':
|
|
this.drawLineString(
|
|
/** @type {import("../../geom/LineString.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
case 'Polygon':
|
|
this.drawPolygon(
|
|
/** @type {import("../../geom/Polygon.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
case 'MultiPoint':
|
|
this.drawMultiPoint(
|
|
/** @type {import("../../geom/MultiPoint.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
case 'MultiLineString':
|
|
this.drawMultiLineString(
|
|
/** @type {import("../../geom/MultiLineString.js").default} */ (
|
|
geometry
|
|
)
|
|
);
|
|
break;
|
|
case 'MultiPolygon':
|
|
this.drawMultiPolygon(
|
|
/** @type {import("../../geom/MultiPolygon.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
case 'GeometryCollection':
|
|
this.drawGeometryCollection(
|
|
/** @type {import("../../geom/GeometryCollection.js").default} */ (
|
|
geometry
|
|
)
|
|
);
|
|
break;
|
|
case 'Circle':
|
|
this.drawCircle(
|
|
/** @type {import("../../geom/Circle.js").default} */ (geometry)
|
|
);
|
|
break;
|
|
default:
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a feature into the canvas. Note that any `zIndex` on the provided
|
|
* style will be ignored - features are rendered immediately in the order that
|
|
* this method is called. If you need `zIndex` support, you should be using an
|
|
* {@link module:ol/layer/Vector~VectorLayer} instead.
|
|
*
|
|
* @param {import("../../Feature.js").default} feature Feature.
|
|
* @param {import("../../style/Style.js").default} style Style.
|
|
* @api
|
|
*/
|
|
drawFeature(feature, style) {
|
|
const geometry = style.getGeometryFunction()(feature);
|
|
if (!geometry || !intersects(this.extent_, geometry.getExtent())) {
|
|
return;
|
|
}
|
|
this.setStyle(style);
|
|
this.drawGeometry(geometry);
|
|
}
|
|
|
|
/**
|
|
* Render a GeometryCollection to the canvas. Rendering is immediate and
|
|
* uses the current styles appropriate for each geometry in the collection.
|
|
*
|
|
* @param {import("../../geom/GeometryCollection.js").default} geometry Geometry collection.
|
|
*/
|
|
drawGeometryCollection(geometry) {
|
|
const geometries = geometry.getGeometriesArray();
|
|
for (let i = 0, ii = geometries.length; i < ii; ++i) {
|
|
this.drawGeometry(geometries[i]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a Point geometry into the canvas. Rendering is immediate and uses
|
|
* the current style.
|
|
*
|
|
* @param {import("../../geom/Point.js").default|import("../Feature.js").default} geometry Point geometry.
|
|
*/
|
|
drawPoint(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry = /** @type {import("../../geom/Point.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
const flatCoordinates = geometry.getFlatCoordinates();
|
|
const stride = geometry.getStride();
|
|
if (this.image_) {
|
|
this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
|
|
}
|
|
if (this.text_ !== '') {
|
|
this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a MultiPoint geometry into the canvas. Rendering is immediate and
|
|
* uses the current style.
|
|
*
|
|
* @param {import("../../geom/MultiPoint.js").default|import("../Feature.js").default} geometry MultiPoint geometry.
|
|
*/
|
|
drawMultiPoint(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry = /** @type {import("../../geom/MultiPoint.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
const flatCoordinates = geometry.getFlatCoordinates();
|
|
const stride = geometry.getStride();
|
|
if (this.image_) {
|
|
this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
|
|
}
|
|
if (this.text_ !== '') {
|
|
this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a LineString into the canvas. Rendering is immediate and uses
|
|
* the current style.
|
|
*
|
|
* @param {import("../../geom/LineString.js").default|import("../Feature.js").default} geometry LineString geometry.
|
|
*/
|
|
drawLineString(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry = /** @type {import("../../geom/LineString.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
if (!intersects(this.extent_, geometry.getExtent())) {
|
|
return;
|
|
}
|
|
if (this.strokeState_) {
|
|
this.setContextStrokeState_(this.strokeState_);
|
|
const context = this.context_;
|
|
const flatCoordinates = geometry.getFlatCoordinates();
|
|
context.beginPath();
|
|
this.moveToLineTo_(
|
|
flatCoordinates,
|
|
0,
|
|
flatCoordinates.length,
|
|
geometry.getStride(),
|
|
false
|
|
);
|
|
context.stroke();
|
|
}
|
|
if (this.text_ !== '') {
|
|
const flatMidpoint = geometry.getFlatMidpoint();
|
|
this.drawText_(flatMidpoint, 0, 2, 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a MultiLineString geometry into the canvas. Rendering is immediate
|
|
* and uses the current style.
|
|
*
|
|
* @param {import("../../geom/MultiLineString.js").default|import("../Feature.js").default} geometry MultiLineString geometry.
|
|
*/
|
|
drawMultiLineString(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry =
|
|
/** @type {import("../../geom/MultiLineString.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
const geometryExtent = geometry.getExtent();
|
|
if (!intersects(this.extent_, geometryExtent)) {
|
|
return;
|
|
}
|
|
if (this.strokeState_) {
|
|
this.setContextStrokeState_(this.strokeState_);
|
|
const context = this.context_;
|
|
const flatCoordinates = geometry.getFlatCoordinates();
|
|
let offset = 0;
|
|
const ends = /** @type {Array<number>} */ (geometry.getEnds());
|
|
const stride = geometry.getStride();
|
|
context.beginPath();
|
|
for (let i = 0, ii = ends.length; i < ii; ++i) {
|
|
offset = this.moveToLineTo_(
|
|
flatCoordinates,
|
|
offset,
|
|
ends[i],
|
|
stride,
|
|
false
|
|
);
|
|
}
|
|
context.stroke();
|
|
}
|
|
if (this.text_ !== '') {
|
|
const flatMidpoints = geometry.getFlatMidpoints();
|
|
this.drawText_(flatMidpoints, 0, flatMidpoints.length, 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render a Polygon geometry into the canvas. Rendering is immediate and uses
|
|
* the current style.
|
|
*
|
|
* @param {import("../../geom/Polygon.js").default|import("../Feature.js").default} geometry Polygon geometry.
|
|
*/
|
|
drawPolygon(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry = /** @type {import("../../geom/Polygon.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
if (!intersects(this.extent_, geometry.getExtent())) {
|
|
return;
|
|
}
|
|
if (this.strokeState_ || this.fillState_) {
|
|
if (this.fillState_) {
|
|
this.setContextFillState_(this.fillState_);
|
|
}
|
|
if (this.strokeState_) {
|
|
this.setContextStrokeState_(this.strokeState_);
|
|
}
|
|
const context = this.context_;
|
|
context.beginPath();
|
|
this.drawRings_(
|
|
geometry.getOrientedFlatCoordinates(),
|
|
0,
|
|
/** @type {Array<number>} */ (geometry.getEnds()),
|
|
geometry.getStride()
|
|
);
|
|
if (this.fillState_) {
|
|
context.fill();
|
|
}
|
|
if (this.strokeState_) {
|
|
context.stroke();
|
|
}
|
|
}
|
|
if (this.text_ !== '') {
|
|
const flatInteriorPoint = geometry.getFlatInteriorPoint();
|
|
this.drawText_(flatInteriorPoint, 0, 2, 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render MultiPolygon geometry into the canvas. Rendering is immediate and
|
|
* uses the current style.
|
|
* @param {import("../../geom/MultiPolygon.js").default} geometry MultiPolygon geometry.
|
|
*/
|
|
drawMultiPolygon(geometry) {
|
|
if (this.squaredTolerance_) {
|
|
geometry = /** @type {import("../../geom/MultiPolygon.js").default} */ (
|
|
geometry.simplifyTransformed(
|
|
this.squaredTolerance_,
|
|
this.userTransform_
|
|
)
|
|
);
|
|
}
|
|
if (!intersects(this.extent_, geometry.getExtent())) {
|
|
return;
|
|
}
|
|
if (this.strokeState_ || this.fillState_) {
|
|
if (this.fillState_) {
|
|
this.setContextFillState_(this.fillState_);
|
|
}
|
|
if (this.strokeState_) {
|
|
this.setContextStrokeState_(this.strokeState_);
|
|
}
|
|
const context = this.context_;
|
|
const flatCoordinates = geometry.getOrientedFlatCoordinates();
|
|
let offset = 0;
|
|
const endss = geometry.getEndss();
|
|
const stride = geometry.getStride();
|
|
context.beginPath();
|
|
for (let i = 0, ii = endss.length; i < ii; ++i) {
|
|
const ends = endss[i];
|
|
offset = this.drawRings_(flatCoordinates, offset, ends, stride);
|
|
}
|
|
if (this.fillState_) {
|
|
context.fill();
|
|
}
|
|
if (this.strokeState_) {
|
|
context.stroke();
|
|
}
|
|
}
|
|
if (this.text_ !== '') {
|
|
const flatInteriorPoints = geometry.getFlatInteriorPoints();
|
|
this.drawText_(flatInteriorPoints, 0, flatInteriorPoints.length, 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {import("../canvas.js").FillState} fillState Fill state.
|
|
* @private
|
|
*/
|
|
setContextFillState_(fillState) {
|
|
const context = this.context_;
|
|
const contextFillState = this.contextFillState_;
|
|
if (!contextFillState) {
|
|
context.fillStyle = fillState.fillStyle;
|
|
this.contextFillState_ = {
|
|
fillStyle: fillState.fillStyle,
|
|
};
|
|
} else {
|
|
if (contextFillState.fillStyle != fillState.fillStyle) {
|
|
contextFillState.fillStyle = fillState.fillStyle;
|
|
context.fillStyle = fillState.fillStyle;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {import("../canvas.js").StrokeState} strokeState Stroke state.
|
|
* @private
|
|
*/
|
|
setContextStrokeState_(strokeState) {
|
|
const context = this.context_;
|
|
const contextStrokeState = this.contextStrokeState_;
|
|
if (!contextStrokeState) {
|
|
context.lineCap = strokeState.lineCap;
|
|
context.setLineDash(strokeState.lineDash);
|
|
context.lineDashOffset = strokeState.lineDashOffset;
|
|
context.lineJoin = strokeState.lineJoin;
|
|
context.lineWidth = strokeState.lineWidth;
|
|
context.miterLimit = strokeState.miterLimit;
|
|
context.strokeStyle = strokeState.strokeStyle;
|
|
this.contextStrokeState_ = {
|
|
lineCap: strokeState.lineCap,
|
|
lineDash: strokeState.lineDash,
|
|
lineDashOffset: strokeState.lineDashOffset,
|
|
lineJoin: strokeState.lineJoin,
|
|
lineWidth: strokeState.lineWidth,
|
|
miterLimit: strokeState.miterLimit,
|
|
strokeStyle: strokeState.strokeStyle,
|
|
};
|
|
} else {
|
|
if (contextStrokeState.lineCap != strokeState.lineCap) {
|
|
contextStrokeState.lineCap = strokeState.lineCap;
|
|
context.lineCap = strokeState.lineCap;
|
|
}
|
|
if (!equals(contextStrokeState.lineDash, strokeState.lineDash)) {
|
|
context.setLineDash(
|
|
(contextStrokeState.lineDash = strokeState.lineDash)
|
|
);
|
|
}
|
|
if (contextStrokeState.lineDashOffset != strokeState.lineDashOffset) {
|
|
contextStrokeState.lineDashOffset = strokeState.lineDashOffset;
|
|
context.lineDashOffset = strokeState.lineDashOffset;
|
|
}
|
|
if (contextStrokeState.lineJoin != strokeState.lineJoin) {
|
|
contextStrokeState.lineJoin = strokeState.lineJoin;
|
|
context.lineJoin = strokeState.lineJoin;
|
|
}
|
|
if (contextStrokeState.lineWidth != strokeState.lineWidth) {
|
|
contextStrokeState.lineWidth = strokeState.lineWidth;
|
|
context.lineWidth = strokeState.lineWidth;
|
|
}
|
|
if (contextStrokeState.miterLimit != strokeState.miterLimit) {
|
|
contextStrokeState.miterLimit = strokeState.miterLimit;
|
|
context.miterLimit = strokeState.miterLimit;
|
|
}
|
|
if (contextStrokeState.strokeStyle != strokeState.strokeStyle) {
|
|
contextStrokeState.strokeStyle = strokeState.strokeStyle;
|
|
context.strokeStyle = strokeState.strokeStyle;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {import("../canvas.js").TextState} textState Text state.
|
|
* @private
|
|
*/
|
|
setContextTextState_(textState) {
|
|
const context = this.context_;
|
|
const contextTextState = this.contextTextState_;
|
|
const textAlign = textState.textAlign
|
|
? textState.textAlign
|
|
: defaultTextAlign;
|
|
if (!contextTextState) {
|
|
context.font = textState.font;
|
|
context.textAlign = textAlign;
|
|
context.textBaseline = textState.textBaseline;
|
|
this.contextTextState_ = {
|
|
font: textState.font,
|
|
textAlign: textAlign,
|
|
textBaseline: textState.textBaseline,
|
|
};
|
|
} else {
|
|
if (contextTextState.font != textState.font) {
|
|
contextTextState.font = textState.font;
|
|
context.font = textState.font;
|
|
}
|
|
if (contextTextState.textAlign != textAlign) {
|
|
contextTextState.textAlign = textAlign;
|
|
context.textAlign = textAlign;
|
|
}
|
|
if (contextTextState.textBaseline != textState.textBaseline) {
|
|
contextTextState.textBaseline = textState.textBaseline;
|
|
context.textBaseline = textState.textBaseline;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the fill and stroke style for subsequent draw operations. To clear
|
|
* either fill or stroke styles, pass null for the appropriate parameter.
|
|
*
|
|
* @param {import("../../style/Fill.js").default} fillStyle Fill style.
|
|
* @param {import("../../style/Stroke.js").default} strokeStyle Stroke style.
|
|
*/
|
|
setFillStrokeStyle(fillStyle, strokeStyle) {
|
|
if (!fillStyle) {
|
|
this.fillState_ = null;
|
|
} else {
|
|
const fillStyleColor = fillStyle.getColor();
|
|
this.fillState_ = {
|
|
fillStyle: asColorLike(
|
|
fillStyleColor ? fillStyleColor : defaultFillStyle
|
|
),
|
|
};
|
|
}
|
|
if (!strokeStyle) {
|
|
this.strokeState_ = null;
|
|
} else {
|
|
const strokeStyleColor = strokeStyle.getColor();
|
|
const strokeStyleLineCap = strokeStyle.getLineCap();
|
|
const strokeStyleLineDash = strokeStyle.getLineDash();
|
|
const strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();
|
|
const strokeStyleLineJoin = strokeStyle.getLineJoin();
|
|
const strokeStyleWidth = strokeStyle.getWidth();
|
|
const strokeStyleMiterLimit = strokeStyle.getMiterLimit();
|
|
const lineDash = strokeStyleLineDash
|
|
? strokeStyleLineDash
|
|
: defaultLineDash;
|
|
this.strokeState_ = {
|
|
lineCap:
|
|
strokeStyleLineCap !== undefined
|
|
? strokeStyleLineCap
|
|
: defaultLineCap,
|
|
lineDash:
|
|
this.pixelRatio_ === 1
|
|
? lineDash
|
|
: lineDash.map((n) => n * this.pixelRatio_),
|
|
lineDashOffset:
|
|
(strokeStyleLineDashOffset
|
|
? strokeStyleLineDashOffset
|
|
: defaultLineDashOffset) * this.pixelRatio_,
|
|
lineJoin:
|
|
strokeStyleLineJoin !== undefined
|
|
? strokeStyleLineJoin
|
|
: defaultLineJoin,
|
|
lineWidth:
|
|
(strokeStyleWidth !== undefined
|
|
? strokeStyleWidth
|
|
: defaultLineWidth) * this.pixelRatio_,
|
|
miterLimit:
|
|
strokeStyleMiterLimit !== undefined
|
|
? strokeStyleMiterLimit
|
|
: defaultMiterLimit,
|
|
strokeStyle: asColorLike(
|
|
strokeStyleColor ? strokeStyleColor : defaultStrokeStyle
|
|
),
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the image style for subsequent draw operations. Pass null to remove
|
|
* the image style.
|
|
*
|
|
* @param {import("../../style/Image.js").default} imageStyle Image style.
|
|
*/
|
|
setImageStyle(imageStyle) {
|
|
let imageSize;
|
|
if (!imageStyle || !(imageSize = imageStyle.getSize())) {
|
|
this.image_ = null;
|
|
return;
|
|
}
|
|
const imagePixelRatio = imageStyle.getPixelRatio(this.pixelRatio_);
|
|
const imageAnchor = imageStyle.getAnchor();
|
|
const imageOrigin = imageStyle.getOrigin();
|
|
this.image_ = imageStyle.getImage(this.pixelRatio_);
|
|
this.imageAnchorX_ = imageAnchor[0] * imagePixelRatio;
|
|
this.imageAnchorY_ = imageAnchor[1] * imagePixelRatio;
|
|
this.imageHeight_ = imageSize[1] * imagePixelRatio;
|
|
this.imageOpacity_ = imageStyle.getOpacity();
|
|
this.imageOriginX_ = imageOrigin[0];
|
|
this.imageOriginY_ = imageOrigin[1];
|
|
this.imageRotateWithView_ = imageStyle.getRotateWithView();
|
|
this.imageRotation_ = imageStyle.getRotation();
|
|
const imageScale = imageStyle.getScaleArray();
|
|
this.imageScale_ = [
|
|
(imageScale[0] * this.pixelRatio_) / imagePixelRatio,
|
|
(imageScale[1] * this.pixelRatio_) / imagePixelRatio,
|
|
];
|
|
this.imageWidth_ = imageSize[0] * imagePixelRatio;
|
|
}
|
|
|
|
/**
|
|
* Set the text style for subsequent draw operations. Pass null to
|
|
* remove the text style.
|
|
*
|
|
* @param {import("../../style/Text.js").default} textStyle Text style.
|
|
*/
|
|
setTextStyle(textStyle) {
|
|
if (!textStyle) {
|
|
this.text_ = '';
|
|
} else {
|
|
const textFillStyle = textStyle.getFill();
|
|
if (!textFillStyle) {
|
|
this.textFillState_ = null;
|
|
} else {
|
|
const textFillStyleColor = textFillStyle.getColor();
|
|
this.textFillState_ = {
|
|
fillStyle: asColorLike(
|
|
textFillStyleColor ? textFillStyleColor : defaultFillStyle
|
|
),
|
|
};
|
|
}
|
|
const textStrokeStyle = textStyle.getStroke();
|
|
if (!textStrokeStyle) {
|
|
this.textStrokeState_ = null;
|
|
} else {
|
|
const textStrokeStyleColor = textStrokeStyle.getColor();
|
|
const textStrokeStyleLineCap = textStrokeStyle.getLineCap();
|
|
const textStrokeStyleLineDash = textStrokeStyle.getLineDash();
|
|
const textStrokeStyleLineDashOffset =
|
|
textStrokeStyle.getLineDashOffset();
|
|
const textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();
|
|
const textStrokeStyleWidth = textStrokeStyle.getWidth();
|
|
const textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();
|
|
this.textStrokeState_ = {
|
|
lineCap:
|
|
textStrokeStyleLineCap !== undefined
|
|
? textStrokeStyleLineCap
|
|
: defaultLineCap,
|
|
lineDash: textStrokeStyleLineDash
|
|
? textStrokeStyleLineDash
|
|
: defaultLineDash,
|
|
lineDashOffset: textStrokeStyleLineDashOffset
|
|
? textStrokeStyleLineDashOffset
|
|
: defaultLineDashOffset,
|
|
lineJoin:
|
|
textStrokeStyleLineJoin !== undefined
|
|
? textStrokeStyleLineJoin
|
|
: defaultLineJoin,
|
|
lineWidth:
|
|
textStrokeStyleWidth !== undefined
|
|
? textStrokeStyleWidth
|
|
: defaultLineWidth,
|
|
miterLimit:
|
|
textStrokeStyleMiterLimit !== undefined
|
|
? textStrokeStyleMiterLimit
|
|
: defaultMiterLimit,
|
|
strokeStyle: asColorLike(
|
|
textStrokeStyleColor ? textStrokeStyleColor : defaultStrokeStyle
|
|
),
|
|
};
|
|
}
|
|
const textFont = textStyle.getFont();
|
|
const textOffsetX = textStyle.getOffsetX();
|
|
const textOffsetY = textStyle.getOffsetY();
|
|
const textRotateWithView = textStyle.getRotateWithView();
|
|
const textRotation = textStyle.getRotation();
|
|
const textScale = textStyle.getScaleArray();
|
|
const textText = textStyle.getText();
|
|
const textTextAlign = textStyle.getTextAlign();
|
|
const textTextBaseline = textStyle.getTextBaseline();
|
|
this.textState_ = {
|
|
font: textFont !== undefined ? textFont : defaultFont,
|
|
textAlign:
|
|
textTextAlign !== undefined ? textTextAlign : defaultTextAlign,
|
|
textBaseline:
|
|
textTextBaseline !== undefined
|
|
? textTextBaseline
|
|
: defaultTextBaseline,
|
|
};
|
|
this.text_ =
|
|
textText !== undefined
|
|
? Array.isArray(textText)
|
|
? textText.reduce((acc, t, i) => (acc += i % 2 ? ' ' : t), '')
|
|
: textText
|
|
: '';
|
|
this.textOffsetX_ =
|
|
textOffsetX !== undefined ? this.pixelRatio_ * textOffsetX : 0;
|
|
this.textOffsetY_ =
|
|
textOffsetY !== undefined ? this.pixelRatio_ * textOffsetY : 0;
|
|
this.textRotateWithView_ =
|
|
textRotateWithView !== undefined ? textRotateWithView : false;
|
|
this.textRotation_ = textRotation !== undefined ? textRotation : 0;
|
|
this.textScale_ = [
|
|
this.pixelRatio_ * textScale[0],
|
|
this.pixelRatio_ * textScale[1],
|
|
];
|
|
}
|
|
}
|
|
}
|
|
|
|
export default CanvasImmediateRenderer;
|