0,0 → 1,111 |
#include "Gate_XNOR.h" |
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Gate_XNOR::Gate_XNOR(int gateID, gType type, int numInputs, int gateLevel) |
: Gate_BASE(gateID, type, numInputs, gateLevel) |
{ |
textRect = QRectF(BORDER_OFFSET * 1.9, BORDER_OFFSET, xSize - BORDER_OFFSET * 3, ySize - BORDER_OFFSET * 2); |
} |
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void Gate_XNOR::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) |
{ |
Q_UNUSED(widget); |
Q_UNUSED(option); |
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#ifdef _DEBUG |
painter->save(); |
painter->setPen((auxSelected) ? debugSelectedPen : debugPen); |
painter->setBrush(debugBrush); |
painter->drawRect(0, 0, xSize, ySize); |
painter->drawRect(textRect); |
if (numInputs < 2) { |
painter->setPen(debugErrorPen); |
painter->drawLine(0, 0, xSize, ySize); |
painter->drawLine(xSize, 0, 0, ySize); |
} |
painter->restore(); |
#endif |
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if (auxSelected) painter->setPen(highlightedPen); |
else painter->setPen(defaultPen); |
painter->setBrush(defaultBrush); |
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// Draw circles indicating I/O points |
for (int i = 0; i < numInputs; i++) { |
painter->drawEllipse(inputPoints[i], INPUT_CIRCLE_SIZE, INPUT_CIRCLE_SIZE); |
} |
painter->drawEllipse(outputPoint, INPUT_CIRCLE_SIZE, INPUT_CIRCLE_SIZE); |
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// Draw gate outline |
QRectF leftArcBox = QRectF(0, BORDER_OFFSET, BORDER_OFFSET + (numInputs * BORDER_OFFSET / 2), ySize - BORDER_OFFSET * 2); |
leftArcBox.translate(BORDER_OFFSET - (BORDER_OFFSET + (numInputs * BORDER_OFFSET / 2)) / 2, 0); |
painter->drawArc(leftArcBox, -90 * 16, 180 * 16); |
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QRectF leftArcBox2 = QRectF(0, BORDER_OFFSET, BORDER_OFFSET + (numInputs * BORDER_OFFSET / 2), ySize - BORDER_OFFSET * 2); |
leftArcBox2.translate(BORDER_OFFSET * 2 - (BORDER_OFFSET + (numInputs * BORDER_OFFSET / 2)) / 2, 0); |
painter->drawArc(leftArcBox2, -90 * 16, 180 * 16); |
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QRectF rightArcBox = QRectF(0, BORDER_OFFSET, 2 * (xSize - (BORDER_OFFSET * 2)) - BORDER_OFFSET * 4, ySize - (BORDER_OFFSET * 2)); |
rightArcBox.translate(-xSize + BORDER_OFFSET * 6, 0); |
painter->drawArc(rightArcBox, 0, 90 * 16); |
painter->drawArc(rightArcBox, -90 * 16, 90 * 16); |
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painter->drawEllipse(QPoint(xSize - BORDER_OFFSET - BORDER_OFFSET / 2, ySize / 2), BORDER_OFFSET / 2, BORDER_OFFSET / 2); |
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// Draw I/O lines |
int a = leftArcBox.width() / 2; |
int b = leftArcBox.height() / 2; |
QPointF arcCenter = leftArcBox.center(); |
for (int i = 0; i < numInputs; i++) { |
float xPt = sqrt((1 - pow(inputPoints[i].y() - arcCenter.y(), 2) / (b * b)) * (a * a)) + arcCenter.x(); |
painter->drawLine(inputPoints[i], QPointF(xPt, inputPoints[i].y())); |
} |
painter->drawLine(outputPoint, QPointF(outputPoint.x() - BORDER_OFFSET, outputPoint.y())); |
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// Draw text showing gate ID |
painter->setPen(defaultPen); |
painter->setFont(defaultFont); |
painter->drawText(textRect, Qt::AlignCenter, QString::number(gateID)); |
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// If enqueued, draw circle around gate ID |
if (enqueued) { |
painter->drawEllipse(textRect.center(), ENQUEUED_CIRCLE_WIDTH, ENQUEUED_CIRCLE_WIDTH); |
} |
} |
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void Gate_XNOR::simulateToOutput() |
{ |
// Save initial values to compare to later |
logicValue initValue = outputValue; |
logicValue initFaultyValue = outputFaultyValue; |
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// Compute new output values |
bool undefined = false, undefinedFaulty = false; |
bool allOnes = true, allOnesFaulty = true; |
bool allZeros = true, allZerosFaulty = true; |
for (int i = 0; i < numInputs; i++) { |
if (inputValues[i] == logicValue_X) undefined = true; |
if (inputValues[i] == logicValue_0) allOnes = false; |
if (inputValues[i] == logicValue_1) allZeros = false; |
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if (inputFaultyValues[i] == logicValue_X) undefinedFaulty = true; |
if (inputFaultyValues[i] == logicValue_0) allOnesFaulty = false; |
if (inputFaultyValues[i] == logicValue_1) allZerosFaulty = false; |
} |
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if (!allOnes && !allZeros) outputValue = logicValue_0; |
else if ((allOnes || allZeros) && !undefined) outputValue = logicValue_1; |
else outputValue = logicValue_X; |
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if (!allOnesFaulty && !allZerosFaulty) outputFaultyValue = logicValue_0; |
else if ((allOnesFaulty || allZerosFaulty) && !undefinedFaulty) outputFaultyValue = logicValue_1; |
else outputFaultyValue = logicValue_X; |
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// If outputs have changed, queue the connected gate for simulation |
if (outputValue != initValue || outputFaultyValue != initFaultyValue) |
emit enqueueSim(this); |
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// Update connected wire values |
for (int i = 0; i < gateOutputWires.size(); i++) { |
gateOutputWires[i]->setValue(outputValue, outputFaultyValue, false); |
} |
} |