Method doClip

src/common/overlay/levelRenderer/Shape.js:391–420

* @function LevelRenderer.Shape.prototype.doClip *

(ctx)

     *
     */
    doClip(ctx) {
        var clipShapeInvTransform = SUtil.Util_matrix.create();

        if (this.__clipShapes) {
            for (var i = 0; i < this.__clipShapes.length; i++) {
                var clipShape = this.__clipShapes[i];
                if (clipShape.needTransform) {
                    let m = clipShape.transform;
                    SUtil.Util_matrix.invert(clipShapeInvTransform, m);
                    ctx.transform(
                        m[0], m[1],
                        m[2], m[3],
                        m[4], m[5]
                    );
                }
                ctx.beginPath();
                clipShape.buildPath(ctx, clipShape.style);
                ctx.clip();
                // Transform back
                if (clipShape.needTransform) {
                    let m = clipShapeInvTransform;
                    ctx.transform(
                        m[0], m[1],
                        m[2], m[3],
                        m[4], m[5]
                    );
                }
            }
        }
    }


    /**