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Support for rotation

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This commit is contained in:
Tim Schaub
2018-11-12 15:56:16 +01:00
parent 4a5fa1f840
commit afc64258af
5 changed files with 110 additions and 18 deletions
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19
src/ol/renderer/canvas/VectorLayer.js
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@@ -81,6 +81,9 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
*/
this.context = createCanvasContext2D();
const canvas = this.context.canvas;
canvas.style.position = 'absolute';
listen(labelCache, EventType.CLEAR, this.handleFontsChanged_, this);
}
@@ -275,12 +278,7 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
const viewHints = frameState.viewHints;
const snapToPixel = !(viewHints[ViewHint.ANIMATING] || viewHints[ViewHint.INTERACTING]);
// TODO: deal with rotation (this should not be necessary)
if (rotation) {
rotateAtOffset(context, -rotation, width / 2, height / 2);
}
let transform = this.getTransform(frameState, 0);
let transform = this.getRenderTransform(frameState, width, height, 0);
const skippedFeatureUids = layerState.managed ? frameState.skippedFeatureUids : {};
replayGroup.replay(context, transform, rotation, skippedFeatureUids, snapToPixel);
@@ -292,7 +290,7 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
while (startX < projectionExtent[0]) {
--world;
offsetX = worldWidth * world;
transform = this.getTransform(frameState, offsetX);
transform = this.getRenderTransform(frameState, width, height, offsetX);
replayGroup.replay(context, transform, rotation, skippedFeatureUids, snapToPixel);
startX += worldWidth;
}
@@ -301,17 +299,12 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
while (startX > projectionExtent[2]) {
++world;
offsetX = worldWidth * world;
transform = this.getTransform(frameState, offsetX);
transform = this.getRenderTransform(frameState, width, height, offsetX);
replayGroup.replay(context, transform, rotation, skippedFeatureUids, snapToPixel);
startX -= worldWidth;
}
}
// TODO: deal with rotation (this should not be necessary)
if (rotation) {
rotateAtOffset(context, rotation, width / 2, height / 2);
}
if (this.getLayer().hasListener(RenderEventType.RENDER)) {
this.dispatchRenderEvent(context, frameState, transform);
}