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BFVisualizer-NumberBasher #913

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306 changes: 306 additions & 0 deletions art/BFVisualizer-NumberBasher/index.js
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Original file line number Diff line number Diff line change
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/*
@title: BF Visualizer
@author: Chang Lu
@snapshot: BF Visualizer
*/

const code = '+++++>+++<[>[>+>+<<-]>>[<<+>>-]<<<-]>>';
// const code = '++++++>++++<[->+<]>';
// const code = '++++++[->++<]>';

const CHAR_SEGMENTS = {
// Digits 0-9
'0': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[1, 1], [0, 1]], [[0, 1], [0, 0]]
],
'1': [
[[0.5, 0], [0.5, 1]]
],
'2': [
[[0, 0], [1, 0]], [[1, 0], [1, 0.5]], [[1, 0.5], [0, 0.5]], [[0, 0.5], [0, 1]], [[0, 1], [1, 1]]
],
'3': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]], [[0, 1], [1, 1]]
],
'4': [
[[0, 0], [0, 0.5]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]]
],
'5': [
[[1, 0], [0, 0]], [[0, 0], [0, 0.5]], [[0, 0.5], [1, 0.5]], [[1, 0.5], [1, 1]], [[0, 1], [1, 1]]
],
'6': [
[[1, 0], [0, 0]], [[0, 0], [0, 1]], [[0, 0.5], [1, 0.5]], [[1, 0.5], [1, 1]], [[0, 1], [1, 1]]
],
'7': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]]
],
'8': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]], [[0, 1], [1, 1]], [[0, 0], [0, 1]]
],
'9': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]], [[0, 0], [0, 0.5]], [[0, 1], [1, 1]]
],
// Letters A-Z
'A': [
[[0, 0], [0, 1]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]], [[0, 0], [1, 0]]
],
'B': [
[[0, 0], [0, 1]], [[0, 0], [1, 0]], [[1, 0], [1, 0.5]], [[0, 0.5], [1, 0.5]], [[0, 1], [1, 1]], [[1, 0.5], [1, 1]]
],
'C': [
[[1, 0], [0, 0]], [[0, 0], [0, 1]], [[0, 1], [1, 1]]
],
'D': [
[[0, 0], [0, 1]], [[0, 0], [1, 0.5]], [[1, 0.5], [1, 1]], [[0, 1], [1, 1]]
],
'E': [
[[1, 0], [0, 0]], [[0, 0], [0, 1]], [[0, 1], [1, 1]], [[0, 0.5], [1, 0.5]]
],
'F': [
[[0, 0], [0, 1]], [[0, 0], [1, 0]], [[0, 0.5], [1, 0.5]]
],
'G': [
[[1, 0], [0, 0]], [[0, 0], [0, 1]], [[0, 1], [1, 1]], [[1, 0.5], [1, 1]], [[0.5, 0.5], [1, 0.5]]
],
'H': [
[[0, 0], [0, 1]], [[1, 0], [1, 1]], [[0, 0.5], [1, 0.5]]
],
'I': [
[[0.5, 0], [0.5, 1]]
],
'J': [
[[1, 0.5], [0.5, 1]], [[0.5, 1], [0, 1]], [[0, 0], [1, 0]], [[1, 0], [1, 0.5]]
],
'K': [
[[0, 0], [0, 1]], [[0, 0.5], [1, 1]], [[0, 0.5], [1, 0]]
],
'L': [
[[0, 0], [0, 1]], [[0, 1], [1, 1]]
],
'M': [
[[0, 0], [0, 1]], [[1, 0], [1, 1]], [[0, 0], [0.5, 1]], [[1, 0], [0.5, 1]]
],
'N': [
[[0, 0], [0, 1]], [[1, 0], [1, 1]], [[0, 1], [1, 0]]
],
'O': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[1, 1], [0, 1]], [[0, 1], [0, 0]]
],
'P': [
[[0, 0], [0, 1]], [[0, 0], [1, 0]], [[1, 0], [1, 0.5]], [[0, 0.5], [1, 0.5]]
],
'Q': [
[[0, 0], [1, 0]], [[1, 0], [1, 1]], [[1, 1], [0, 1]], [[0, 1], [0, 0]], [[0.5, 0.5], [1, 1]]
],
'R': [
[[0, 0], [0, 1]], [[0, 0], [1, 0]], [[1, 0], [1, 0.5]], [[0, 0.5], [1, 0.5]], [[0.5, 0.5], [1, 1]]
],
'S': [
[[1, 0], [0, 0]], [[0, 0], [0, 0.5]], [[0, 0.5], [1, 0.5]], [[1, 0.5], [1, 1]], [[0, 1], [1, 1]]
],
'T': [
[[0.5, 0], [0.5, 1]], [[0, 0], [1, 0]]
],
'U': [
[[0, 0], [0, 1]], [[1, 0], [1, 1]], [[0, 1], [1, 1]]
],
'V': [
[[0, 0], [0.5, 1]], [[0.5, 1], [1, 0]]
],
'W': [
[[0, 1], [0.5, 0]], [[1, 1], [0.5, 0]], [[0, 1], [0, 0]], [[1, 1], [1, 0]]
],
'X': [
[[0, 0], [1, 1]], [[0, 1], [1, 0]]
],
'Y': [
[[0, 0], [0.5, 0.5]], [[1, 0], [0.5, 0.5]], [[0.5, 0.5], [0.5, 1]]
],
'Z': [
[[0, 1], [1, 1]], [[1, 0], [0, 1]], [[0, 0], [1, 0]]
],
// Basic punctuation
'.': [
[[0.5, 0], [0.5, 0.1]]
],
',': [
[[0.5, 0], [0.5, 0.1], [0.4, -0.1]]
],
'!': [
[[0.5, 0], [0.5, 0.7]], [[0.5, 0.8], [0.5, 1]]
],
'?': [
[[0.5, 1], [0.5, 0.9]], [[0.5, 0.8], [0.5, 0.5]], [[0.5, 0.5], [0.6, 0.4]], [[0.6, 0.4], [0.4, 0.2]]
],
' ': [
// Empty for space
],
'+': [
[[0.5, 0], [0.5, 1]], [[0, 0.5], [1, 0.5]]
],
'-': [
[[0, 0.5], [1, 0.5]]
],
'[': [
[[0, 1], [1, 1]], [[0, 0], [0, 1]], [[1, 0], [0, 0]]
],
']': [
[[1, 1], [0, 1]], [[1, 0], [1, 1]], [[0, 0], [1, 0]]
],
'>': [
[[0, 0], [1, 0.5]], [[1, 0.5], [0, 1]]
],
'<': [
[[1, 0], [0, 0.5]], [[0, 0.5], [1, 1]]
]
};
function drawText(text, x, y, size, width=1) {
const scale = size;
let offsetX = x;

for (const char of text.toUpperCase()) {
if (CHAR_SEGMENTS[char]) {
const segments = CHAR_SEGMENTS[char].map(segment => {
return segment.map(([sx, sy]) => [
offsetX + sx * scale,
y - sy * scale + scale,
]);
});

drawLines(segments, { stroke: 'black', width: width });
}
offsetX += scale * 1.5; // Adjust spacing between characters
}
}
function drawTape(tape, x, y, size, pointerLocation) {
const scale = size;
const tapeLength = tape.length;

// Draw the tape
for (let i = 0; i < tapeLength; i++) {
const value = tape[i] || 0; // Default value if tape[i] is undefined

// Draw square representing each tape cell
drawLines([
[[x + i * scale, y], [x + (i + 1) * scale, y]],
[[x + (i + 1) * scale, y], [x + (i + 1) * scale, y + scale]],
[[x + (i + 1) * scale, y + scale], [x + i * scale, y + scale]],
[[x + i * scale, y + scale], [x + i * scale, y]]
], { stroke: 'black', width: 3 });

// Calculate the appropriate text size based on the length of the number
const textSize = scale / (Math.max(value.toString().length, 1)*1.5-0.5) * 0.6;

// Draw text inside the cell
drawText(value.toString(), x + i * scale + scale * 0.2, y + scale * 0.5 - textSize/2, textSize);
}

// Draw an arrow to indicate the current cell
drawLines([
[[x + pointerLocation * scale + scale * 0.5, y + scale + 10], [x + pointerLocation * scale + scale * 0.5, y + scale + 2]],
[[x + pointerLocation * scale + scale * 0.5, y + scale + 2], [x + pointerLocation * scale + scale * 0.25, y + scale + 5]],
[[x + pointerLocation * scale + scale * 0.5, y + scale + 2], [x + pointerLocation * scale + scale * 0.75, y + scale + 5]]
], { stroke: 'black', width: 3 });
}
function drawCode(code, x, y, size, pointerLocation) {
const scale = size;
let offsetX = x;

for (let i = 0; i < code.length; i++) {
const char = code[i];
const isHighlighted = i === pointerLocation;
const lineWidth = isHighlighted ? 3 : 1;

if (CHAR_SEGMENTS[char]) {
const segments = CHAR_SEGMENTS[char].map(segment => {
return segment.map(([sx, sy]) => [
offsetX + sx * scale,
y + sy * scale,
]);
});

drawLines(segments, { stroke: 'black', width: lineWidth });
}
offsetX += scale * 1.5; // Adjust spacing between characters
}
}
function interpretBrainfuck(code, maxFrames = 100) {
const tape = new Array(10).fill(0);
let pointer = 0;
let codePointer = 0;
const tapeSnapshots = [];

for (let frame = 0; frame < maxFrames; frame++) {
if (codePointer >= code.length) {
break;
}

const command = code[codePointer];

switch (command) {
case '>':
pointer = (pointer + 1) % tape.length;
break;
case '<':
pointer = (pointer - 1 + tape.length) % tape.length;
break;
case '+':
tape[pointer]++;
break;
case '-':
tape[pointer]--;
break;
case '[':
if (tape[pointer] === 0) {
let loopCounter = 1;
while (loopCounter > 0) {
codePointer++;
if (code[codePointer] === '[') loopCounter++;
if (code[codePointer] === ']') loopCounter--;
}
}
break;
case ']':
if (tape[pointer] !== 0) {
let loopCounter = 1;
while (loopCounter > 0) {
codePointer--;
if (code[codePointer] === '[') loopCounter--;
if (code[codePointer] === ']') loopCounter++;
}
}
break;
}

// Store the current state of the tape, pointer position, and code pointer
tapeSnapshots.push({
tape: [...tape],
pointer,
codePointer
});

codePointer++;
}

return tapeSnapshots;
}
function visualizeBrainfuck(tapeSnapshots, code, x, y, cellSize) {
tapeSnapshots.forEach((snapshot, index) => {
const offsetY = y + index * (cellSize + 20 + 30);
drawTape(snapshot.tape, x, offsetY, cellSize, snapshot.pointer);
drawCode(code, x, offsetY + cellSize + 20, cellSize * 0.8, snapshot.codePointer); // Adjust y to draw code above the tape
});
}

// Example usage with the provided Brainfuck program and visualization
const tapeSnapshots = interpretBrainfuck(code, 1000);
const frameCount = tapeSnapshots.length;
const cellSize = 20;
const tapeLength = 10;
const frameHeight = tapeLength * cellSize;
const frameWidth = cellSize + 20 + 40 + (cellSize * 0.8); // Additional space for the arrow and code
const spaceBetweenFrames = 20;

setDocDimensions(Math.max(tapeLength*20+20,code.length*24+10), frameCount*70+10);
visualizeBrainfuck(tapeSnapshots, code, 10, 10, 20);
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