:quality(85)/https://cdn.frvr.ai/6873a01ed36b31e59c1b7ead.png)
:quality(85)/https://cdn.frvr.ai/68739e81d36b31e59c1b7ea3.png)
Creation History
Code edit (10 edits merged)
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In the `QRcode.encodeECC` method, compute the error correction code from `self.dataCodeWord`, and put the ECC into `self.eccCodeWord`
Code edit (4 edits merged)
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Print codeWord with padding in hexadecimal split into bytes.
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Add byte padding to the codeWord
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In the `TODO` comment, draw `rawData` on the QR code in a zigzag pattern,starting at 20,20, and make the zigzag pattern turn when it reaches a position pattern.
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Make the zigzag pattern turn when it reaches a position pattern
Code edit (17 edits merged)
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In the `TODO` comment, draw `rawData` on the QR code in a zigzag pattern, just like a QR code.
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Code edit (3 edits merged)
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Please fix the bug: 'Cannot read properties of undefined (reading 'length')' in or related to this line: 'for (var i = 0; i < self.string.length; i += 3) {' Line Number: 56
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Please fix the bug: 'Cannot read properties of undefined (reading 'length')' in or related to this line: 'for (var i = 0; i < numericString.length; i += 3) {' Line Number: 56
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At the moment, the QR code generator where are we generate numbers. So in `QRCode.encodeNumeric`, split the string of numbers into groups of 3, convert them to binary then print it to console.
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finish the removePixel method
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Please fix the bug: 'x is not defined' in or related to this line: 'for (var i = 9; x <= size - 8; i += 2) {' Line Number: 45
/****
* Classes
****/
var QRCode = Container.expand(function (string) {
var self = Container.call(this);
// Initialize QR code properties
self.pixelSize = 32;
self.modules = [];
self.string = string;
self.countBitLength = 10;
self.rawData = "";
// Block = 8 bits
self.maxDataBlock = 19;
self.maxErrorBlock = 7;
self.placePixel = function (x, y) {
var pixel = self.attachAsset('QRCodePixel', {
x: x * self.pixelSize,
y: y * self.pixelSize,
scaleX: self.pixelSize,
scaleY: self.pixelSize,
tint: 0
});
self.modules[y] = [];
self.modules[y][x] = 1;
};
self.createPattern = function () {
var size = 21; // Standard QR code size
self.attachAsset('QRCodePositionL', {
x: 0,
y: 0
});
self.attachAsset('QRCodePositionR', {
x: self.pixelSize * 21,
y: 0,
anchorX: 1
});
self.attachAsset('QRCodePositionB', {
x: 0,
y: self.pixelSize * 21,
anchorY: 1
});
self.placePixel(8, size - 8);
// timing pattern
for (var i = 8; i <= size - 8; i += 2) {
self.placePixel(i, 6);
self.placePixel(6, i);
}
// Draw rawData in zigzag pattern starting at (20, 20)
var x = 20;
var y = 20;
var direction = -1; // -1 for up, 1 for down
var dataIndex = 0;
while (dataIndex < self.rawData.length && x >= 0) {
// Check if current position would hit a position pattern
var hitPattern = false;
// Top-left pattern (0,0 to 7,7)
if (x < 8 && y < 8) hitPattern = true;
// Top-right pattern (14,0 to 20,7)
if (x >= 14 && y < 8) hitPattern = true;
// Bottom-left pattern (0,14 to 7,20)
if (x < 8 && y >= 14) hitPattern = true;
// Timing patterns (column 6 and row 6)
if (x === 6 || y === 6) hitPattern = true;
if (!hitPattern && dataIndex < self.rawData.length) {
// Place pixel if bit is 1
if (self.rawData[dataIndex] === '1') {
self.placePixel(x, y);
}
dataIndex++;
}
// Move to next position
y += direction;
// Check bounds and change direction
if (y < 0 || y > 20 || hitPattern) {
// Reset y to valid position
if (y < 0) y = 0;
if (y > 20) y = 20;
// Move left and change direction
x -= 1;
direction *= -1;
// If we hit a pattern while moving left, keep moving left
while (x >= 0 && (x < 8 && y < 8 || x >= 14 && y < 8 || x < 8 && y >= 14 || x === 6)) {
x -= 1;
}
}
}
};
// Encode numeric data method
self.encodeNumeric = function () {
// Split into groups of 3 digits
var groups = [];
for (var i = 0; i < self.string.length; i += 3) {
var group = self.string.substr(i, Math.min(3, self.string.length - i));
groups.push(group);
}
console.log("Groups of 3: " + groups.join(", "));
// Convert each group to binary
var binaryGroups = [];
for (var j = 0; j < groups.length; j++) {
var num = parseInt(groups[j], 10);
var bitLength;
// Determine bit length based on group size
if (groups[j].length === 3) {
bitLength = 10; // 3 digits need 10 bits (0-999)
} else if (groups[j].length === 2) {
bitLength = 7; // 2 digits need 7 bits (0-99)
} else {
bitLength = 4; // 1 digit needs 4 bits (0-9)
}
// Convert to binary with proper padding
var binary = num.toString(2);
while (binary.length < bitLength) {
binary = "0" + binary;
}
binaryGroups.push(binary);
console.log("Group '" + groups[j] + "' -> " + num + " -> " + binary + " (" + bitLength + " bits)");
}
console.log("Message Binary: " + binaryGroups.join(" ") + " (" + binaryGroups.join("").length + " bits)");
self.rawData += "0001";
var binary = string.length.toString(2);
// Convert to binary with proper padding
while (binary.length < self.countBitLength) {
binary = "0" + binary;
}
self.rawData += binary;
self.rawData += binaryGroups.join("");
console.log("rawData: " + self.rawData + " (" + self.rawData.length + " bits)");
self.rawData += "0000"; // Terminator
};
self.encodeNumeric();
self.createPattern();
return self;
});
/****
* Initialize Game
****/
var game = new LK.Game({
backgroundColor: 0xFFFFFF
});
/****
* Game Code
****/
// Create QR code container
var qrCode = new QRCode("8675309");
qrCode.x = (2048 - qrCode.width) / 2;
qrCode.y = (2732 - qrCode.height) / 2;
game.addChild(qrCode); ===================================================================
--- original.js
+++ change.js
@@ -8,9 +8,8 @@
self.modules = [];
self.string = string;
self.countBitLength = 10;
self.rawData = "";
- self.size = 21;
// Block = 8 bits
self.maxDataBlock = 19;
self.maxErrorBlock = 7;
self.placePixel = function (x, y) {
@@ -24,8 +23,9 @@
self.modules[y] = [];
self.modules[y][x] = 1;
};
self.createPattern = function () {
+ var size = 21; // Standard QR code size
self.attachAsset('QRCodePositionL', {
x: 0,
y: 0
});
@@ -38,55 +38,52 @@
x: 0,
y: self.pixelSize * 21,
anchorY: 1
});
- self.placePixel(8, self.size - 8);
+ self.placePixel(8, size - 8);
// timing pattern
- for (var i = 8; i <= self.size - 8; i += 2) {
+ for (var i = 8; i <= size - 8; i += 2) {
self.placePixel(i, 6);
self.placePixel(6, i);
}
- var bitIndex = 0;
+ // Draw rawData in zigzag pattern starting at (20, 20)
+ var x = 20;
+ var y = 20;
var direction = -1; // -1 for up, 1 for down
- // Start from bottom-right corner, moving left by 2 columns at a time
- for (var rightCol = self.size - 1; rightCol >= 1; rightCol -= 2) {
- // Skip timing column
- if (rightCol === 6) {
- rightCol = 5;
+ var dataIndex = 0;
+ while (dataIndex < self.rawData.length && x >= 0) {
+ // Check if current position would hit a position pattern
+ var hitPattern = false;
+ // Top-left pattern (0,0 to 7,7)
+ if (x < 8 && y < 8) hitPattern = true;
+ // Top-right pattern (14,0 to 20,7)
+ if (x >= 14 && y < 8) hitPattern = true;
+ // Bottom-left pattern (0,14 to 7,20)
+ if (x < 8 && y >= 14) hitPattern = true;
+ // Timing patterns (column 6 and row 6)
+ if (x === 6 || y === 6) hitPattern = true;
+ if (!hitPattern && dataIndex < self.rawData.length) {
+ // Place pixel if bit is 1
+ if (self.rawData[dataIndex] === '1') {
+ self.placePixel(x, y);
+ }
+ dataIndex++;
}
- // Process two columns at a time
- for (var vert = 0; vert < self.size; vert++) {
- for (var col = 0; col < 2; col++) {
- var x = rightCol - col;
- var y = direction === -1 ? self.size - 1 - vert : vert;
- // Check if position is in position pattern area (top-left, top-right, bottom-left)
- var inPositionPattern = false;
- // Top-left pattern (0,0) to (6,6)
- if (x <= 6 && y <= 6) {
- inPositionPattern = true;
- }
- // Top-right pattern (size-7,0) to (size-1,6)
- if (x >= self.size - 7 && y <= 6) {
- inPositionPattern = true;
- }
- // Bottom-left pattern (0,size-7) to (6,size-1)
- if (x <= 6 && y >= self.size - 7) {
- inPositionPattern = true;
- }
- // Skip if position is already occupied (timing patterns, position markers)
- if (!inPositionPattern && (!self.modules[y] || !self.modules[y][x])) {
- if (bitIndex < self.rawData.length) {
- var bit = self.rawData.charAt(bitIndex);
- if (bit === '1') {
- self.placePixel(x, y);
- }
- bitIndex++;
- }
- }
+ // Move to next position
+ y += direction;
+ // Check bounds and change direction
+ if (y < 0 || y > 20 || hitPattern) {
+ // Reset y to valid position
+ if (y < 0) y = 0;
+ if (y > 20) y = 20;
+ // Move left and change direction
+ x -= 1;
+ direction *= -1;
+ // If we hit a pattern while moving left, keep moving left
+ while (x >= 0 && (x < 8 && y < 8 || x >= 14 && y < 8 || x < 8 && y >= 14 || x === 6)) {
+ x -= 1;
}
}
- // Flip direction for next column pair
- direction = -direction;
}
};
// Encode numeric data method
self.encodeNumeric = function () {
@@ -101,9 +98,9 @@
var binaryGroups = [];
for (var j = 0; j < groups.length; j++) {
var num = parseInt(groups[j], 10);
var bitLength;
- // Determine bit length based on group self.size
+ // Determine bit length based on group size
if (groups[j].length === 3) {
bitLength = 10; // 3 digits need 10 bits (0-999)
} else if (groups[j].length === 2) {
bitLength = 7; // 2 digits need 7 bits (0-99)
@@ -148,6 +145,5 @@
// Create QR code container
var qrCode = new QRCode("8675309");
qrCode.x = (2048 - qrCode.width) / 2;
qrCode.y = (2732 - qrCode.height) / 2;
-game.addChild(qrCode);
-console.log(1 << 1);
\ No newline at end of file
+game.addChild(qrCode);
\ No newline at end of file
