Version 0.9.188

Author: perak

dist/quantum-circuit.js

@@ -5471,6 +5471,7 @@ QuantumCircuit.prototype.registerGate = function(name, obj) {
 			connectors.push(rootGate.drawingInfo.connectors[rootGate.drawingInfo.connectors.length - 1]);
 
 			this.customGates[name].drawingInfo.connectors = connectors;
+			this.customGates[name].drawingInfo.root = rootGate.drawingInfo.root;
 		}
 	}
 };
@@ -5479,12 +5480,80 @@ QuantumCircuit.prototype.registerGate = function(name, obj) {
 QuantumCircuit.prototype.registerMCXGate = function(ctrlQubits) {
 	var gateName = this.multiControlledGateName("mcx", ctrlQubits);
 	this.registerGate(gateName, this.MCXCircuit(ctrlQubits).save(true));
+	return gateName;
 };
 
 
 QuantumCircuit.prototype.registerMCU1Gate = function(ctrlQubits) {
 	var gateName = this.multiControlledGateName("mcu1", ctrlQubits);
 	this.registerGate(gateName, this.MCU1Circuit(ctrlQubits).save(true));
+	return gateName;
+};
+
+
+QuantumCircuit.prototype.registerMultiControlledGate = function(rootName, ctrlQubits) {
+	switch(rootName) {
+		case "cx": return this.registerMCXGate(ctrlQubits); break;
+		case "cu1": return this.registerMCU1Gate(ctrlQubits); break;
+	}
+
+	return "";
+};
+
+QuantumCircuit.prototype.getOrRegisterMultiControlledEquivalent = function(gateName, inverseControl) {
+	var gateDef = this.basicGates[gateName];
+	if(gateDef) {
+		if(gateDef.drawingInfo) {
+			// Basic gate with multi-controlled/inverse controlled implementation
+			if(gateName == "x" || gateName == "u1" || gateDef.drawingInfo.root == "x" || gateDef.drawingInfo.root == "u1") {
+				if(!this.basicGates["c" + gateName] || inverseControl) {
+					// create multi controlled version and return its name
+					var rootName = "c" + (gateDef.drawingInfo.root || gateName);
+					var numCtrlQubits = math.log2(gateDef.matrix.length);
+					var ctrlQubits = [];
+					for(var i = 0; i < numCtrlQubits - 1; i++) {
+						ctrlQubits.push(true);
+					}
+					ctrlQubits.unshift(!inverseControl);
+
+					return this.registerMultiControlledGate(rootName, ctrlQubits);
+				} else {
+					// there is basic gate with additional control
+					return "c" + gateName;
+				}
+			}
+		}
+
+		// Basic gate for which we don't have multi-controlled or inverse controlled implementation
+		// but maybe we have basic gate with additional control
+		for(var gn in this.basicGates) {
+			var tmpGateDef = this.basicGates[gn];
+			if(tmpGateDef && tmpGateDef.drawingInfo && tmpGateDef.drawingInfo.root && tmpGateDef.drawingInfo.root == gateName) {
+				if(!inverseControl) {
+					// there is basic gate with additional control
+					return gn;
+				}
+			}
+		}
+		return null;
+	}
+
+	if(this.customGates[gateName]) {
+		var mcInfo = this.decodeMultiControlledGateName(gateName);
+		if(!mcInfo || !mcInfo.numCtrlQubits) {
+			return null;
+		}
+
+		if(mcInfo.rootName == "cx" || mcInfo.rootName == "cu1") {
+			// create multi controlled version and return its name
+			mcInfo.ctrlQubits.unshift(!inverseControl);
+			return this.registerMultiControlledGate(mcInfo.rootName, mcInfo.ctrlQubits);
+		}
+
+		return null;
+	}
+
+	return null;
 };
 
 
@@ -5561,17 +5630,21 @@ QuantumCircuit.prototype.multiControlledGateName = function(namePrefix, ctrlQubi
 	return gateName;
 };
 
+
 QuantumCircuit.prototype.isMultiControlledGate = function(gateName) {
 	var mcInfo = this.decodeMultiControlledGateName(gateName);
 	return !!this.customGates[gateName] && !!mcInfo && !!mcInfo.numCtrlQubits;
 };
 
-QuantumCircuit.prototype.isControllableGate = function(gateName) {
-	if(gateName == "cx") {
-		return true;
-	}
 
-	if(this.basicGates[gateName]) {
+QuantumCircuit.prototype.isControllableGate = function(gateName) {
+	var gateDef = this.basicGates[gateName];
+	if(gateDef) {
+		if(gateDef.drawingInfo) {
+			if(gateDef.drawingInfo.root == "x" || gateDef.drawingInfo.root == "u1") {
+				return true;
+			}
+		}
 		for(var gn in this.basicGates) {
 			var gateDef = this.basicGates[gn];
 			if(gateDef && gateDef.drawingInfo && gateDef.drawingInfo.root && gateDef.drawingInfo.root == gateName) {
@@ -5580,8 +5653,7 @@ QuantumCircuit.prototype.isControllableGate = function(gateName) {
 		}
 	}
 
-//	return this.isMultiControlledGate(gateName);
-	return false;
+	return this.isMultiControlledGate(gateName);
 };
 
 QuantumCircuit.prototype.getGatePosById = function(gateId) {
@@ -7428,14 +7500,13 @@ QuantumCircuit.prototype.exportToSVG = function(options) {
 				gateList.push({ name: "dot", svg: dotsvg });
 			}
 
-/*
 			// special item: inverted dot
 			var ndotsvg = "";
 			if(!options.embedded) {
 				ndotsvg += "<?xml version=\"1.0\"?>";
 				ndotsvg +="<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">";
 			}
-			ndotsvg += "<svg class=\"qc-gate-gallery-item\" data-gate=\"dot\" data-content=\"Control\" width=\"" + options.cellWidth + "\" height=\"" + options.cellHeight + "\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">";
+			ndotsvg += "<svg class=\"qc-gate-gallery-item\" data-gate=\"ndot\" data-content=\"Control\" width=\"" + options.cellWidth + "\" height=\"" + options.cellHeight + "\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">";
 			ndotsvg = ndotsvg + gateSVG(0, 0, "ndot", "ndot", "ndot", !!options.gateGallery, false);
 			ndotsvg += "</svg>";
 
@@ -7444,10 +7515,8 @@ QuantumCircuit.prototype.exportToSVG = function(options) {
 			} else {
 				gateList.push({ name: "dot", svg: ndotsvg });
 			}
-*/
 		}
 
-
 		// custom gates
 		if(options.customGateGallery) {
 			for(var gateName in this.customGates) {

dist/quantum-circuit.min.js

@@ -1,6 +1,6 @@
 {
   "name": "quantum-circuit",
-  "version": "0.9.187",
+  "version": "0.9.188",
   "description": "Quantum Circuit Simulator",
   "main": "lib/quantum-circuit.js",
   "unpkg": "dist/quantum-circuit.min.js",