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support viewport flipping for clip and cropping polygons in webglviewer

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This commit is contained in:
Tom 2024-02-21 18:12:22 -05:00
parent ae5f08b9bd
commit 5df791fc82
1 changed files with 14 additions and 1 deletions
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15
src/webgldrawer.js
View File

@ -917,6 +917,12 @@
this._clippingContext.clearRect(0, 0, this._clippingCanvas.width, this._clippingCanvas.height);
this._clippingContext.save();
if(this.viewer.viewport.getFlip()){
const point = new $.Point(this.canvas.width / 2, this.canvas.height / 2);
this._clippingContext.translate(point.x, 0);
this._clippingContext.scale(-1, 1);
this._clippingContext.translate(-point.x, 0);
}
if(item._clip){
const polygon = [
@ -936,7 +942,7 @@
this._clippingContext[i === 0 ? 'moveTo' : 'lineTo'](coord.x, coord.y);
});
this._clippingContext.clip();
this._setClip()
this._setClip();
}
if(item._croppingPolygons){
let polygons = item._croppingPolygons.map(polygon => {
@ -956,6 +962,13 @@
this._clippingContext.clip();
}
if(this.viewer.viewport.getFlip()){
const point = new $.Point(this.canvas.width / 2, this.canvas.height / 2);
this._clippingContext.translate(point.x, 0);
this._clippingContext.scale(-1, 1);
this._clippingContext.translate(-point.x, 0);
}
this._clippingContext.drawImage(this._renderingCanvas, 0, 0);
this._clippingContext.restore();