fix clone/getZ when poly empty
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@ -965,7 +965,7 @@ class Polygon {
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* @returns {number} z value of first point
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* @returns {number} z value of first point
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*/
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*/
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getZ(i) {
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getZ(i) {
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return this.z !== undefined ? this.z : this.points[i || 0].z;
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return this.z !== undefined ? this.z : this.points[i || 0]?.z || 0;
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}
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}
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/**
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/**
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