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fix currentClip == null

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This commit is contained in:
VLCEK Martin
2022-05-13 15:40:03 +02:00
parent c6de7701bb
commit bd223b4447
1 changed files with 33 additions and 26 deletions
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59
src/ol/renderer/canvas/VectorTileLayer.js
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@@ -688,36 +688,43 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
let contextSaved = false;
// Clip mask for regions in this tile that already filled by a higher z tile
const currentClip = executorGroups[0].getClipCoords(transform);
for (let j = 0, jj = clips.length; j < jj; ++j) {
if (z !== currentZ && currentZ < clipZs[j]) {
const clip = clips[j];
if (
intersects(
[currentClip[0], currentClip[3], currentClip[4], currentClip[7]],
[clip[0], clip[3], clip[4], clip[7]]
)
) {
if (!contextSaved) {
context.save();
contextSaved = true;
if (currentClip) {
for (let j = 0, jj = clips.length; j < jj; ++j) {
if (z !== currentZ && currentZ < clipZs[j]) {
const clip = clips[j];
if (
intersects(
[
currentClip[0],
currentClip[3],
currentClip[4],
currentClip[7],
],
[clip[0], clip[3], clip[4], clip[7]]
)
) {
if (!contextSaved) {
context.save();
contextSaved = true;
}
context.beginPath();
// counter-clockwise (outer ring) for current tile
context.moveTo(currentClip[0], currentClip[1]);
context.lineTo(currentClip[2], currentClip[3]);
context.lineTo(currentClip[4], currentClip[5]);
context.lineTo(currentClip[6], currentClip[7]);
// clockwise (inner ring) for higher z tile
context.moveTo(clip[6], clip[7]);
context.lineTo(clip[4], clip[5]);
context.lineTo(clip[2], clip[3]);
context.lineTo(clip[0], clip[1]);
context.clip();
}
context.beginPath();
// counter-clockwise (outer ring) for current tile
context.moveTo(currentClip[0], currentClip[1]);
context.lineTo(currentClip[2], currentClip[3]);
context.lineTo(currentClip[4], currentClip[5]);
context.lineTo(currentClip[6], currentClip[7]);
// clockwise (inner ring) for higher z tile
context.moveTo(clip[6], clip[7]);
context.lineTo(clip[4], clip[5]);
context.lineTo(clip[2], clip[3]);
context.lineTo(clip[0], clip[1]);
context.clip();
}
}
clips.push(currentClip);
clipZs.push(currentZ);
}
clips.push(currentClip);
clipZs.push(currentZ);
for (let t = 0, tt = executorGroups.length; t < tt; ++t) {
const executorGroup = executorGroups[t];
executorGroup.execute(