bool Crack::move()
{
m_ptIndex++;
// continue cracking
if(m_bCurved)
{
/*
m_x += ((float) m_ys * cos(m_angle * DEG_TO_RAD));
m_y += ((float) m_ys * sin(m_angle * DEG_TO_RAD));
m_x += ((float) m_xs * cos(m_angle * DEG_TO_RAD - HALF_PI));
m_y += ((float) m_xs * sin(m_angle* DEG_TO_RAD - HALF_PI));
m_angle += m_angleStep;
m_degreesDrawn += abs(m_angleStep);
*/
}
// draw black crack
if(m_ptIndex != m_pts.size())
{
int ptX = m_pts[m_ptIndex].x();
int ptY = m_pts[m_ptIndex].y();
m_image.draw_point(ptX, ptY, 0, Artist::black.colour());
regionColor();
// safe to check
if(m_bCurved && (m_degreesDrawn > 360) )
{
findStart();
return false;
}
else if(m_cgrid[ptY*m_image.width() + ptX] == UNCRACKED)
{
// continue cracking
m_cgrid[ptY*m_image.width() + ptX] = m_line.angle();
}
else
{
// crack encountered (not self), stop cracking
findStart();
return false;
}
}
else
{
// out of bounds, stop cracking
findStart();
return false;
}
return true;
}
void Spectrograph::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
QPainter painter(this);
painter.fillRect(rect(), Qt::black);
const int numBars = m_bars.count();
// Highlight region of selected bar
if (m_barSelected != NullIndex && numBars) {
QRect regionRect = rect();
regionRect.setLeft(m_barSelected * rect().width() / numBars);
regionRect.setWidth(rect().width() / numBars);
QColor regionColor(0, 0, 64);
painter.setBrush(Qt::DiagCrossPattern);
painter.fillRect(regionRect, regionColor);
painter.setBrush(Qt::NoBrush);
}
QColor barColor(0, 0, 255);
QColor clipColor(255, 0, 0);
// Draw the outline
const QColor gridColor = barColor.darker();
QPen gridPen(gridColor);
painter.setPen(gridPen);
painter.drawLine(rect().topLeft(), rect().topRight());
painter.drawLine(rect().topRight(), rect().bottomRight());
painter.drawLine(rect().bottomRight(), rect().bottomLeft());
painter.drawLine(rect().bottomLeft(), rect().topLeft());
QVector<qreal> dashes;
dashes << 2 << 2;
gridPen.setDashPattern(dashes);
painter.setPen(gridPen);
// Draw vertical lines between bars
if (numBars) {
const int numHorizontalSections = numBars;
QLine line(rect().topLeft(), rect().bottomLeft());
for (int i=1; i<numHorizontalSections; ++i) {
line.translate(rect().width()/numHorizontalSections, 0);
painter.drawLine(line);
}
}
// Draw horizontal lines
const int numVerticalSections = 10;
QLine line(rect().topLeft(), rect().topRight());
for (int i=1; i<numVerticalSections; ++i) {
line.translate(0, rect().height()/numVerticalSections);
painter.drawLine(line);
}
barColor = barColor.lighter();
barColor.setAlphaF(0.75);
clipColor.setAlphaF(0.75);
// Draw the bars
if (numBars) {
// Calculate width of bars and gaps
const int widgetWidth = rect().width();
const int barPlusGapWidth = widgetWidth / numBars;
const int barWidth = 0.8 * barPlusGapWidth;
const int gapWidth = barPlusGapWidth - barWidth;
const int paddingWidth = widgetWidth - numBars * (barWidth + gapWidth);
const int leftPaddingWidth = (paddingWidth + gapWidth) / 2;
const int barHeight = rect().height() - 2 * gapWidth;
for (int i=0; i<numBars; ++i) {
const qreal value = m_bars[i].value;
Q_ASSERT(value >= 0.0 && value <= 1.0);
QRect bar = rect();
bar.setLeft(rect().left() + leftPaddingWidth + (i * (gapWidth + barWidth)));
bar.setWidth(barWidth);
bar.setTop(rect().top() + gapWidth + (1.0 - value) * barHeight);
bar.setBottom(rect().bottom() - gapWidth);
QColor color = barColor;
if (m_bars[i].clipped)
color = clipColor;
painter.fillRect(bar, color);
}
}
}