Method endContour

src/shape/custom_shapes.js:1035–1073

(closeMode = constants.OPEN, _index = this.contours.length - 1)

  }

  endContour(closeMode = constants.OPEN, _index = this.contours.length - 1) {
    const contour = this.at(_index);
    if (closeMode === constants.CLOSE) {
      // shape characteristics
      const isPath = contour.kind === constants.PATH;

      // anchor characteristics
      const anchorVertex = this.at(_index, 0, 0);
      const anchorHasPosition = Object.hasOwn(anchorVertex, 'position');
      const lastSegment = this.at(_index, -1);

      // close path
      if (isPath && anchorHasPosition) {
        if (lastSegment.handlesClose()) {
          lastSegment.close(anchorVertex);
        } else {
          // Temporarily remove contours after the current one so that we add to the original
          // contour again
          const rest = this.contours.splice(
            _index + 1,
            this.contours.length - _index - 1
          );
          const prevVertexProperties = this.#vertexProperties;
          this.#vertexProperties = { ...prevVertexProperties };
          for (const key in anchorVertex) {
            if (['position', 'textureCoordinates'].includes(key)) continue;
            this.#vertexProperties[key] = anchorVertex[key];
          }
          this.vertex(
            anchorVertex.position,
            anchorVertex.textureCoordinates,
            { isClosing: true }
          );
          this.#vertexProperties = prevVertexProperties;
          this.contours.push(...rest);
        }
      }
    }
  }

  beginShape(shapeKind = constants.PATH) {
    this.kind = shapeKind;